Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
864
FNUS56 KPDT 012035
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
135 PM PDT Mon Sep 1 2025
.DISCUSSION...
High pressure will continue to build into the region through
midweek. As a result, unseasonably hot temperatures are expected
through Thursday with highs in the mid 90s in many lower elevation
locations to around 100 degrees in the Columbia Basin.
Slight (<20%) thunderstorm chances return Tuesday afternoon and
Tuesday evening and again on Wednesday, mainly for central Oregon.
***Thunderstorms imply strong gusty winds***
***Winds are 20 foot 10 minute averages***
***CWR-chance of wetting rain 0.10 or greater***
***Ventilation Index is derived from the
transport wind multiplied by the mixing
height in 100`s of feet. Index categories
are a generalized indicator and users are
encourage to develop criteria that are
suitable and representative of dispersion
conditions in their local area of interest.***
Note: Max transport winds may not occur
at the same time as max mixing height.
WAZ695-021130-
East Washington South Central Cascade Mountains-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Hazy and areas of smoke.
* Min temperature.....57-65.
* Max humidity........51-66 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (25-79) decreasing to poor (25-55) after
midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Areas of smoke in the morning.
Hazy.
* Max temperature.....87-95...except 78-86 ridges.
* Min humidity........19-26 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southeast 2
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming southeast 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor (25-63) increasing to fair to good
(408-684) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear. Hazy and areas of smoke.
* Min temperature.....62-68.
* Max humidity........39-54 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
northwest 1 to 6 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
northwest 1 to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (45-115) decreasing to poor (25-70)
after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....89-97...except 80-88 ridges.
* Min humidity........17-25 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 5 mph shifting to the
northeast 1 to 6 mph in the afternoon.
* Ridges/upr slopes....North winds 1 to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13000 ft agl.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor (25-74) increasing to fair to good
(363-665) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy. Lows 61 to 68. Highs 80 to 95. West
winds 2 to 7 mph.
.FRIDAY...Partly cloudy. Lows 59 to 66. Highs 75 to 89. West
winds 1 to 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows 56 to 63. Highs 70 to 83. West winds 1 to
6 mph.
.SUNDAY...A slight chance of showers. Mostly cloudy. Lows 53 to
59. Highs 66 to 79. West winds 2 to 7 mph.
.MONDAY...Mostly cloudy with a slight chance of showers. Lows
50 to 56. Highs 61 to 74. West winds 2 to 7 mph.
$$
WAZ690-021130-
Kittitas Valley-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy smoke in the evening. Hazy. Areas of smoke after midnight.
* Min temperature.....62-70.
* Max humidity........44-59 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
northwest 1 to 6 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
northwest 2 to 6 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (25-56) increasing to poor (27-77) after
midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Areas of smoke in the morning.
Hazy. Patchy smoke in the afternoon.
* Max temperature.....93-98...except 83-94 ridges.
* Min humidity........17-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 5 mph shifting to the
southeast 2 to 5 mph in the afternoon.
* Ridges/upr slopes....North winds 2 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....North around 5 mph shifting to the southeast
in the afternoon.
* Ventilation Index...Poor (25-71) increasing to poor to fair
(190-404) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear. Hazy. Areas of smoke after
midnight.
* Min temperature.....65-73.
* Max humidity........35-50 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
northwest 2 to 7 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
northwest 2 to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (56-98) decreasing to poor (29-89) after
midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny. Hazy in the morning.
* Max temperature.....95-101...except 86-97 ridges.
* Min humidity........14-19 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph shifting to the
east 2 to 6 mph in the afternoon.
* Ridges/upr slopes....Northwest winds 2 to 7 mph shifting to the
northeast 2 to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12000 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Poor (25-81) increasing to fair (367-493) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Mostly clear. Lows 66 to 73. Highs 93 to 100. North
winds 2 to 7 mph.
.FRIDAY...Partly cloudy. Lows 65 to 72. Highs 88 to 95. North
winds 2 to 7 mph.
.SATURDAY...A slight chance of showers. Mostly cloudy. Lows 63 to
70. Highs 83 to 89. Northwest winds 2 to 7 mph.
.SUNDAY...A slight chance of showers. Mostly cloudy. Lows 59 to
66. Highs 80 to 87. Northwest winds 2 to 7 mph.
.MONDAY...Mostly cloudy with a slight chance of showers. Lows
56 to 63. Highs 74 to 82. Northwest winds 4 to 9 mph.
$$
WAZ694-021130-
Yakama Alpine District-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Hazy. Areas of smoke after midnight.
* Min temperature.....57-65.
* Max humidity........52-67 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (25-72) decreasing to poor (25-50) after
midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Hazy and areas of smoke.
* Max temperature.....90-96...except 80-91 ridges.
* Min humidity........16-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southeast 1
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming south 1 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....East around 5 mph shifting to the south in
the afternoon.
* Ventilation Index...Poor (25-50) increasing to fair (220-444) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy. Hazy. Areas of smoke after
midnight.
* Min temperature.....61-70.
* Max humidity........36-51 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
northwest 1 to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
northwest 2 to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (57-111) decreasing to poor (25-60)
after midnight.
.WEDNESDAY...
* Sky/weather.........Partly cloudy. Areas of smoke in the morning.
* Max temperature.....92-98...except 82-93 ridges.
* Min humidity........15-23 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 5 mph shifting to the
southeast 1 to 6 mph in the afternoon.
* Ridges/upr slopes....Northwest winds 2 to 7 mph shifting to the
east 1 to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11500 ft agl.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor (25-51) increasing to fair to good
(360-666) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy. Lows 60 to 69. Highs 85 to 96. West
winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 59 to 67. Highs 80 to 91. West
winds 1 to 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
56 to 63. Highs 74 to 87. West winds 1 to 5 mph.
.SUNDAY...A slight chance of showers. Mostly cloudy. Lows 53 to
60. Highs 70 to 82. West winds 1 to 5 mph.
.MONDAY...Mostly cloudy with a chance of showers. Lows 50 to 57.
Highs 65 to 77. West winds 2 to 7 mph.
$$
ORZ691-WAZ691-021130-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....61-66.
* Max humidity........54-69 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 6 mph shifting to the west
1 to 5 mph after midnight.
* Ridges/upr slopes....Northwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (29-125) decreasing to poor (25-47)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Areas of smoke in the morning.
Hazy.
* Max temperature.....94-99.
* Min humidity........16-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 1 to 5 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....Southwest winds 2 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Poor (25-53) increasing to poor to fair
(97-237) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....65-70.
* Max humidity........41-56 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 1 to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North around 5 mph.
* Ventilation Index...Poor (25-150) decreasing to poor (25-44)
after midnight.
.WEDNESDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....95-101.
* Min humidity........16-21 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to
5 mph in the afternoon.
* Ridges/upr slopes....Northwest winds 2 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11500 ft agl.
* Transport winds.....West around 5 mph shifting to the north in
the afternoon.
* Ventilation Index...Poor (25-38) increasing to poor to fair
(110-332) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Mostly clear. Lows 65 to 70. Highs 95 to 100. West
winds 2 to 7 mph.
.FRIDAY...Partly cloudy. Lows 65 to 70. Highs 90 to 96. West
winds 2 to 6 mph.
.SATURDAY...Partly cloudy with a slight chance of showers. Lows
63 to 68. Highs 85 to 91. Southwest winds 2 to 7 mph.
.SUNDAY...A slight chance of showers. Mostly cloudy. Lows 60 to
65. Highs 81 to 88. Southwest winds 3 to 8 mph.
.MONDAY...Mostly cloudy with a slight chance of showers. Lows
57 to 62. Highs 77 to 82. Southwest winds 4 to 9 mph.
$$
ORZ692-WAZ692-021130-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....59-69.
* Max humidity........35-50 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....East around 5 mph.
* Ventilation Index...Poor (34-102) decreasing to poor (25-45)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Hazy in the morning.
* Max temperature.....89-98...except 83-89 ridges.
* Min humidity........16-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......14000 ft agl.
* Transport winds.....South around 5 mph shifting to the west in
the afternoon.
* Ventilation Index...Poor (25-47) increasing to poor to fair
(123-339) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....61-71.
* Max humidity........32-47 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Poor (40-152) decreasing to poor (25-50)
after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....90-98...except 84-89 ridges.
* Min humidity........15-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......14500 ft agl.
* Transport winds.....East around 5 mph.
* Ventilation Index...Poor (25-40) increasing to fair (214-470) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Mostly clear. Lows 61 to 70. Highs 85 to 95.
Southwest winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 60 to 68. Highs 82 to 92. Southwest
winds 1 to 5 mph.
.SATURDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 58 to 65. Highs 76 to 87. Terrain driven
winds less than 5 mph.
.SUNDAY...A slight chance of showers. Mostly cloudy. Lows 55 to
63. Highs 73 to 83. Southwest winds 1 to 5 mph.
.MONDAY...Mostly cloudy with a chance of showers. Lows 52 to 60.
Highs 68 to 78. Southwest winds 1 to 5 mph.
$$
ORZ693-WAZ693-021130-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....58-68...except 64-69 ridges.
* Max humidity........31-45 percent...except 27-34 percent ridges.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming
southeast 2 to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Poor to fair (95-217) decreasing to poor
(25-60) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Hazy in the morning.
* Max temperature.....91-100...except 85-91 ridges.
* Min humidity........11-16 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 2 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......15500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Poor (25-70) increasing to poor to fair
(130-446) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....59-68.
* Max humidity........34-47 percent...except 31-36 percent ridges.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....North winds 2 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor to fair (155-265) decreasing to poor
(25-56) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....90-100...except 84-92 ridges.
* Min humidity........12-17 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......15000 ft agl.
* Transport winds.....East around 5 mph.
* Ventilation Index...Poor (25-50) increasing to fair (254-474) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Mostly clear. Lows 58 to 68. Highs 88 to 97. West
winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 57 to 67. Highs 85 to 93. West
winds 1 to 5 mph.
.SATURDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 55 to 65. Highs 78 to 87. Southwest
winds 1 to 5 mph.
.SUNDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 53 to 62. Highs 75 to 85.
Southwest winds 1 to 5 mph.
.MONDAY...Mostly cloudy with a chance of showers. Lows 50 to 60.
Highs 71 to 80. Terrain driven winds less than 5 mph.
$$
ORZ701-021130-
Eastern Columbia River Gorge of Oregon-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Hazy.
* Min temperature.....57-62.
* Max humidity........62-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph...except west 2
to 7 mph in the eastern Columbia River Gorge.
* Ridges/upr slopes....West winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (83-179) decreasing to poor (25-86)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....95-100...except 90-96 ridges.
* Min humidity........18-26 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Poor (25-50) increasing to poor to fair
(157-337) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....64-70.
* Max humidity........43-58 percent...except 41-46 percent ridges.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming west
1 to 5 mph after midnight. In the eastern Columbia River
Gorge, west winds 2 to 7 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor (57-147) decreasing to poor (29-79)
after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....94-99.
* Min humidity........20-31 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph. In the eastern
Columbia River Gorge, west winds 2 to 7 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....West around 5 mph shifting to the east in the
afternoon.
* Ventilation Index...Poor (25-49) increasing to poor to fair
(118-296) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy. Lows 62 to 68. Highs 92 to 97. West
winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 62 to 67. Highs 87 to 93. West
winds 1 to 6 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
59 to 64. Highs 83 to 88. West winds 2 to 7 mph.
.SUNDAY...Mostly cloudy with a slight chance of showers. Lows
56 to 61. Highs 77 to 83. West winds 2 to 7 mph.
.MONDAY...Mostly cloudy with a chance of showers. Lows 54 to 59.
Highs 75 to 80. West winds 3 to 8 mph.
$$
ORZ702-021130-
East Slopes of the Mt. Hood National Forest-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Hazy.
* Min temperature.....55-63.
* Max humidity........51-66 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (38-114) decreasing to poor (25-41)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....91-96...except 84-92 ridges.
* Min humidity........19-26 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-47) increasing to fair to good
(318-518) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....63-71.
* Max humidity........37-49 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (44-146) decreasing to poor (25-48)
after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....90-97...except 83-92 ridges.
* Min humidity........20-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9500 ft agl.
* Transport winds.....North around 5 mph shifting to the east in
the afternoon.
* Ventilation Index...Poor (25-37) increasing to fair (285-449) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy. Lows 60 to 67. Highs 82 to 95. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 58 to 65. Highs 77 to 91. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
56 to 63. Highs 73 to 86. Terrain driven winds less than 5 mph.
.SUNDAY...Mostly cloudy with a slight chance of showers. Lows
52 to 60. Highs 67 to 81. Terrain driven winds less than 5 mph.
.MONDAY...A chance of showers. Mostly cloudy. Lows 50 to 57.
Highs 64 to 78. West winds 1 to 5 mph.
$$
ORZ695-021130-
Eagle Cap Wilderness-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....62-68...except 57-65 ridges.
* Max humidity........28-37 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming
southeast 2 to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Poor to fair (67-219) decreasing to poor
(25-69) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Hazy in the morning.
* Max temperature.....86-96...except 75-86 ridges.
* Min humidity........14-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......14500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Poor (25-106) increasing to fair to good
(292-580) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....62-68...except 56-64 ridges.
* Max humidity........31-40 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
northeast 2 to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming north 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Poor to fair (119-217) decreasing to poor
(25-84) after midnight.
.WEDNESDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....85-95...except 74-85 ridges.
* Min humidity........16-23 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Northeast winds 2 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......14000 ft agl.
* Transport winds.....East around 5 mph.
* Ventilation Index...Poor (25-55) increasing to fair (303-469) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy. Lows 57 to 66. Highs 77 to 92. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 55 to 64. Highs 73 to 88. West
winds 1 to 5 mph.
.SATURDAY...Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 52 to 61. Highs 67 to 82. Terrain
driven winds less than 5 mph.
.SUNDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 50 to 59. Highs 65 to 80.
Terrain driven winds less than 5 mph.
.MONDAY...Mostly cloudy with a slight chance of showers. Lows
47 to 56. Highs 60 to 75. Terrain driven winds less than 5 mph.
$$
ORZ694-021130-
Grande Ronde Valley of Oregon-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....56-62.
* Max humidity........41-56 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Southeast winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....South winds 2 to 6 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor to fair (140-232) decreasing to poor
(25-53) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....95-100.
* Min humidity........12-17 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 to 10 mph. Gusts to
15 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Poor (31-59) increasing to fair (360-480) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy. Hazy in the evening.
* Min temperature.....58-63.
* Max humidity........44-56 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....North winds 1 to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Fair (216-274) decreasing to poor (38-76)
after midnight.
.WEDNESDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....94-99.
* Min humidity........14-19 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13000 ft agl.
* Transport winds.....North around 5 mph shifting to the southeast
in the afternoon.
* Ventilation Index...Poor (28-48) increasing to poor to fair
(187-407) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Mostly clear. Lows 58 to 63. Highs 92 to 97. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 58 to 63. Highs 88 to 93. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 56 to 61. Highs 82 to 87. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 53 to 58. Highs 80 to 85. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly cloudy with a chance of showers. Lows 51 to 56.
Highs 75 to 80. Terrain driven winds less than 5 mph.
$$
ORZ699-021130-
Western Forested Blue Mountains-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....57-64.
* Max humidity........34-49 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor to fair (94-274) decreasing to poor
(25-55) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Hazy in the morning.
* Max temperature.....89-95...except 83-89 ridges.
* Min humidity........13-18 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Poor (25-64) increasing to fair (248-492) in
the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....58-66.
* Max humidity........36-46 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor to fair (127-277) decreasing to poor
(25-59) after midnight.
.WEDNESDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....88-94...except 81-88 ridges.
* Min humidity........17-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13500 ft agl.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor (25-43) increasing to fair to good
(354-638) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy. Lows 58 to 64. Highs 82 to 91. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 56 to 63. Highs 79 to 88. Terrain driven
winds less than 5 mph.
.SATURDAY...Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 53 to 61. Highs 74 to 83. Terrain
driven winds less than 5 mph.
.SUNDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 51 to 58. Highs 71 to 79.
Terrain driven winds less than 5 mph.
.MONDAY...Mostly cloudy with a chance of showers. Lows 49 to 55.
Highs 66 to 75. Terrain driven winds less than 5 mph.
$$
ORZ696-021130-
John Day Valley-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....57-63.
* Max humidity........40-52 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor to fair (108-350) decreasing to poor
(25-54) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Hazy in the morning.
* Max temperature.....90-98...except 86-91 ridges.
* Min humidity........9-14 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......14000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-62) increasing to fair to excellent
(436-722) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....61-67.
* Max humidity........38-48 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast winds 2 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Fair (246-368) decreasing to poor (25-67)
after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....89-97...except 84-89 ridges.
* Min humidity........15-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13500 ft agl.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor (25-59) increasing to fair to good
(428-640) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy. Lows 60 to 66. Highs 87 to 96. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 60 to 65. Highs 83 to 93. Terrain
driven winds less than 5 mph.
.SATURDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 57 to 63. Highs 79 to 88.
Terrain driven winds less than 5 mph.
.SUNDAY...A chance of showers and a slight chance of
thunderstorms. Mostly cloudy. Lows 54 to 60. Highs 76 to 84.
Terrain driven winds less than 5 mph.
.MONDAY...Mostly cloudy with a chance of showers. Lows 51 to 57.
Highs 72 to 80. Terrain driven winds less than 5 mph.
$$
ORZ700-021130-
Central Mountains of Oregon-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....48-58...except 54-60 ridges.
* Max humidity........55-70 percent...except 39-53 percent ridges.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor to fair (146-400) decreasing to poor
(25-34) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Hazy in the morning.
* Max temperature.....90-96...except 84-89 ridges.
* Min humidity........11-16 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-56) increasing to good to excellent
(620-1050) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy. A
slight chance of showers.
* Min temperature.....57-66.
* Max humidity........41-53 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming west
1 to 6 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph shifting to the
northwest after midnight.
* Ventilation Index...Poor to fair (142-340) decreasing to poor
(25-61) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....87-94...except 81-86 ridges.
* Min humidity........17-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-47) increasing to fair to excellent
(486-700) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy. Lows 53 to 63. Highs 87 to 94.
Southwest winds 1 to 5 mph.
.FRIDAY...Partly cloudy. Lows 53 to 63. Highs 83 to 90. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows 51 to 60. Highs 79 to 86. West winds 1 to
5 mph.
.SUNDAY...A slight chance of showers. Mostly cloudy. Lows 48 to
57. Highs 75 to 82. Southwest winds 1 to 6 mph.
.MONDAY...A chance of showers. Mostly cloudy. Lows 45 to 54.
Highs 71 to 77. Southwest winds 2 to 7 mph.
$$
ORZ703-021130-
Warm Springs Reservation-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....56-61.
* Max humidity........56-71 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 1 to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (103-197) decreasing to poor (25-38)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Hazy in the morning.
* Max temperature.....93-99...except 82-91 ridges.
* Min humidity........15-21 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-51) increasing to fair to excellent
(426-718) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
* Min temperature.....65-70.
* Max humidity........40-49 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 6 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming west 1
to 6 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North around 10 mph.
* Ventilation Index...Poor to fair (139-277) decreasing to poor
(25-58) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....91-97...except 79-89 ridges.
* Min humidity........19-25 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 2
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....West around 5 mph shifting to the southeast
in the afternoon.
* Ventilation Index...Poor (25-33) increasing to fair (326-478) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy. Lows 61 to 66. Highs 87 to 97. West
winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 60 to 65. Highs 83 to 93. West
winds 1 to 5 mph.
.SATURDAY...A slight chance of showers. Mostly cloudy. Lows 58 to
63. Highs 79 to 88. West winds 2 to 7 mph.
.SUNDAY...A slight chance of showers. Mostly cloudy. Lows 55 to
60. Highs 73 to 84. West winds 2 to 7 mph.
.MONDAY...A chance of showers. Mostly cloudy. Lows 52 to 57.
Highs 69 to 80. West winds 2 to 7 mph.
$$
ORZ704-021130-
Northern Deschutes National Forest-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....49-57.
* Max humidity........62-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (76-198) decreasing to poor (25-29)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny. Hazy in the morning.
* Max temperature.....91-98...except 79-89 ridges.
* Min humidity........17-24 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 1 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12000 ft agl.
* Transport winds.....South around 5 mph increasing to around 15
mph in the afternoon.
* Ventilation Index...Poor (25-67) increasing to excellent
(768-1028) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy. A
slight chance of showers after midnight.
* Min temperature.....58-66.
* Max humidity........43-54 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming west
1 to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor to fair (142-280) decreasing to poor
(25-68) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly cloudy.
* Max temperature.....88-94...except 76-85 ridges.
* Min humidity........19-24 percent...except 23-35 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Southwest winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....South around 10 mph.
* Ventilation Index...Poor (25-53) increasing to fair to good
(411-637) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...A slight chance of showers. Partly cloudy. Lows 55 to
61. Highs 80 to 94. West winds 1 to 5 mph.
.FRIDAY...A slight chance of showers. Partly cloudy. Lows 53 to
60. Highs 76 to 90. West winds 1 to 5 mph.
.SATURDAY...A slight chance of showers and thunderstorms. Partly
cloudy. Lows 51 to 58. Highs 72 to 86. West winds 1 to 5 mph.
.SUNDAY...A slight chance of showers. Partly cloudy. Lows 48 to
55. Highs 67 to 80. West winds 1 to 5 mph.
.MONDAY...A chance of showers. Mostly cloudy. Lows 45 to 52.
Highs 62 to 76. West winds 2 to 7 mph.
$$
ORZ705-021130-
Southern Deschutes National Forest-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy and areas of smoke.
* Min temperature.....44-53.
* Max humidity........67-82 percent...except 56-71 percent ridges.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph shifting to the east
after midnight.
* Ventilation Index...Poor (65-193) decreasing to poor (25-32)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Hazy in the morning.
* Max temperature.....88-93...except 78-86 ridges.
* Min humidity........15-21 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12500 ft agl.
* Transport winds.....South 10 to 15 mph.
* Ventilation Index...Poor (29-69) increasing to excellent
(1038-1050) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of showers.
* Min temperature.....52-60.
* Max humidity........52-67 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
northwest 2 to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
northwest 2 to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southwest around 10 mph shifting to the north
after midnight.
* Ventilation Index...Poor to fair (133-313) decreasing to poor
(25-55) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....84-89...except 74-82 ridges.
* Min humidity........21-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 2 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12000 ft agl.
* Transport winds.....Southeast around 10 mph.
* Ventilation Index...Poor (25-44) increasing to good to excellent
(601-773) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy with a slight chance of showers. Lows
48 to 57. Highs 80 to 89. Terrain driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 47 to 55. Highs 77 to 85. Terrain
driven winds less than 5 mph.
.SATURDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 45 to 53. Highs 73 to 82. Terrain driven
winds less than 5 mph.
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
44 to 50. Highs 68 to 77. Terrain driven winds less than 5 mph.
.MONDAY...Mostly cloudy with a chance of showers. Lows 41 to 48.
Highs 64 to 73. Terrain driven winds less than 5 mph.
$$
ORZ697-021130-
Central Blue Mountains-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....53-61.
* Max humidity........33-43 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor to fair (192-386) decreasing to poor
(25-52) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....88-93...except 83-89 ridges.
* Min humidity........10-15 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Poor (25-52) increasing to fair to good
(337-659) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
* Min temperature.....55-63.
* Max humidity........35-50 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....East around 10 mph.
* Ventilation Index...Poor to fair (185-267) decreasing to poor
(25-54) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....81-88.
* Min humidity........17-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13000 ft agl.
* Transport winds.....Northwest around 10 mph shifting to the south
in the afternoon.
* Ventilation Index...Poor (25-52) increasing to good to excellent
(563-703) in the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy. Lows 53 to 61. Highs 81 to 88. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 53 to 60. Highs 77 to 84. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Lows 50 to 57. Highs 74 to 81. Terrain
driven winds less than 5 mph.
.SUNDAY...A chance of showers and a slight chance of
thunderstorms. Partly cloudy. Lows 48 to 54. Highs 70 to 77.
Terrain driven winds less than 5 mph.
.MONDAY...A chance of showers. Mostly cloudy. Lows 45 to 51.
Highs 66 to 73. Terrain driven winds less than 5 mph.
$$
ORZ698-021130-
Southern Blue Mountains-
135 PM PDT Mon Sep 1 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....52-58.
* Max humidity........34-45 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast around 10 mph shifting to the west
after midnight.
* Ventilation Index...Fair (257-391) decreasing to poor (25-36)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....88-93...except 83-88 ridges.
* Min humidity........9-14 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13500 ft agl.
* Transport winds.....West around 5 mph shifting to the south in
the afternoon.
* Ventilation Index...Poor (25-43) increasing to fair to good
(429-685) in the afternoon.
.TUESDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy. A
slight chance of showers.
* Min temperature.....56-61.
* Max humidity........37-48 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Poor to fair (184-314) decreasing to poor
(25-60) after midnight.
.WEDNESDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Max temperature.....84-90.
* Min humidity........15-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12500 ft agl.
* Transport winds.....Northwest around 10 mph shifting to the south
in the afternoon.
* Ventilation Index...Poor (25-57) increasing to good (535-675) in
the afternoon.
.Forecast days 3 through 7......
.THURSDAY...Partly cloudy. Lows 53 to 59. Highs 85 to 90. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 53 to 58. Highs 80 to 85. Terrain
driven winds less than 5 mph.
.SATURDAY...A slight chance of showers and thunderstorms. Mostly
cloudy. Lows 50 to 56. Highs 78 to 84. North winds 1 to 5 mph.
.SUNDAY...A chance of showers. Partly cloudy. Lows 48 to 53.
Highs 74 to 80. West winds 1 to 6 mph.
.MONDAY...A slight chance of showers. Mostly cloudy. Lows 45 to
50. Highs 70 to 77. West winds 1 to 6 mph.
$$
.8-14 DAY OUTLOOK for Tuesday September 9 through Monday September 15...
A greater chance of near to above normal temperatures and above
normal precipitation.
$$