Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
772
FNUS56 KPDT 312042
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
142 PM PDT Sun Aug 31 2025
.DISCUSSION...Hot temperatures return by Tuesday with the lower
Columbia Basin reaching at or near 100 degrees through Thursday.
Slight thunderstorm chances return this afternoon in parts of the
central WA Cascades and Tuesday night into Wednesday for parts of
Central Oregon. Winds will remain generally light and variable
throughout most of the week, with some breezier conditions near
the Cascade gaps today, but will become lighter through out the
week.
***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.
WAZ695-011145-
East Washington South Central Cascade Mountains-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
Areas of smoke in the evening. Hazy. A slight chance of showers
and thunderstorms.
* Min temperature.....53-61.
* Max humidity........62-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....West winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (51-171) decreasing to poor (25-80)
after midnight.
.LABOR DAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Hazy.
* Max temperature.....80-89...except 72-80 ridges.
* Min humidity........27-39 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.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9500 ft agl.
* Transport winds.....Northwest around 5 mph shifting to the
southeast in the afternoon.
* Ventilation Index...Poor (25-68) increasing to fair to good
(254-532) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Partly cloudy. Hazy and areas of smoke.
* Min temperature.....57-64.
* Max humidity........58-73 percent.
* Humidity recovery...Moderate...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West 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.....West around 5 mph.
* Ventilation Index...Poor (25-116) decreasing to poor (25-60)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....87-95...except 78-86 ridges.
* Min humidity........20-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southeast 1
to 6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming southeast 1
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor (25-47) increasing to fair to good
(473-681) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly clear. Lows 61 to 68. Highs 82 to 96.
Northwest winds 1 to 5 mph.
.THURSDAY...Mostly clear. Lows 60 to 67. Highs 80 to 94. West
winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 58 to 65. Highs 76 to 90. West
winds 1 to 5 mph.
.SATURDAY...Mostly cloudy. Lows 55 to 63. Highs 71 to 85. West
winds 2 to 7 mph.
.SUNDAY...Mostly cloudy with a slight chance of showers. Lows
52 to 58. Highs 64 to 78. West winds 2 to 7 mph.
$$
WAZ690-011145-
Kittitas Valley-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Hazy. Areas of smoke after
midnight. A slight chance of showers and thunderstorms.
* Min temperature.....60-68.
* Max humidity........53-68 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph.
* Ridges/upr slopes....Northwest winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (63-177) decreasing to poor (30-102)
after midnight.
.LABOR DAY...
* Sky/weather.........Partly cloudy. Hazy.
* Max temperature.....87-93...except 78-88 ridges.
* Min humidity........24-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 6 mph shifting to the
southeast 2 to 5 mph in the afternoon.
* Ridges/upr slopes....North winds 2 to 7 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8000 ft agl.
* Transport winds.....North around 10 mph shifting to the southeast
in the afternoon.
* Ventilation Index...Poor (43-109) increasing to fair (214-348) in
the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....61-70.
* Max humidity........48-63 percent.
* Humidity recovery...Moderate.
* 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 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (38-112) decreasing to poor (26-84)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....92-98...except 83-93 ridges.
* Min humidity........17-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 5 mph shifting to the
east in the afternoon.
* Ridges/upr slopes....Northwest winds 1 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....Northwest around 5 mph shifting to the
southeast in the afternoon.
* Ventilation Index...Poor (25-57) increasing to fair (223-471) in
the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly clear. Lows 65 to 72. Highs 94 to 101.
Northwest winds 2 to 7 mph.
.THURSDAY...Mostly clear. Lows 65 to 72. Highs 92 to 99.
Northwest winds 2 to 7 mph.
.FRIDAY...Partly cloudy. Lows 65 to 71. Highs 89 to 96. Northwest
winds 2 to 7 mph.
.SATURDAY...Partly cloudy. Lows 63 to 69. Highs 84 to 91.
Northwest winds 2 to 7 mph.
.SUNDAY...Partly cloudy. Lows 58 to 64. Highs 79 to 86. Northwest
winds 4 to 9 mph.
$$
WAZ694-011145-
Yakama Alpine District-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy.
Hazy.
* Min temperature.....52-61.
* Max humidity........60-75 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (78-178) decreasing to poor (25-60)
after midnight.
.LABOR DAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Hazy.
* Max temperature.....83-90...except 74-85 ridges.
* Min humidity........22-35 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming south 1 to
5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-48) increasing to poor to fair
(187-409) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....56-64.
* Max humidity........55-70 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 (38-94) decreasing to poor (25-45) after
midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....90-97...except 81-92 ridges.
* Min humidity........18-24 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.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....Northeast around 5 mph shifting to the south
in the afternoon.
* Ventilation Index...Poor (25-38) increasing to fair to good
(213-523) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Partly cloudy. Lows 60 to 69. Highs 86 to 97.
Northwest winds 1 to 5 mph.
.THURSDAY...Partly cloudy. Lows 60 to 67. Highs 83 to 95. West
winds 1 to 5 mph.
.FRIDAY...Partly cloudy. Lows 58 to 66. Highs 80 to 91. West
winds 1 to 5 mph.
.SATURDAY...Mostly cloudy. Lows 55 to 63. Highs 74 to 86. West
winds 1 to 5 mph.
.SUNDAY...Partly cloudy. Lows 51 to 59. Highs 69 to 82. West
winds 1 to 6 mph.
$$
ORZ691-WAZ691-011145-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....60-65.
* Max humidity........55-70 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor (48-178) decreasing to poor (25-67)
after midnight.
.LABOR DAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
Hazy.
* Max temperature.....88-95...except 84-90 ridges.
* Min humidity........22-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......8500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (30-98) increasing to poor to fair
(152-256) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....61-66.
* Max humidity........56-71 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 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 5 mph.
* Ventilation Index...Poor (26-140) decreasing to poor (25-50)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....94-99.
* Min humidity........18-25 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....West winds 2 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.....West around 5 mph.
* Ventilation Index...Poor (25-41) increasing to poor to fair
(59-201) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Partly cloudy. Lows 64 to 70. Highs 94 to 101.
Northwest winds 1 to 6 mph.
.THURSDAY...Mostly clear. Lows 65 to 70. Highs 93 to 100.
Southwest winds 2 to 7 mph.
.FRIDAY...Partly cloudy. Lows 65 to 70. Highs 90 to 97. Southwest
winds 2 to 7 mph.
.SATURDAY...Partly cloudy. Lows 63 to 68. Highs 84 to 92.
Southwest winds 2 to 7 mph.
.SUNDAY...Partly cloudy. Lows 59 to 64. Highs 81 to 87. Southwest
winds 4 to 9 mph.
$$
ORZ692-WAZ692-011145-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....57-67.
* Max humidity........35-50 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Southeast winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Southeast winds 1 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 (83-253) decreasing to poor
(25-50) after midnight.
.LABOR DAY...
* Sky/weather.........Partly cloudy. Hazy.
* Max temperature.....87-94...except 82-87 ridges.
* Min humidity........16-24 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.....South 5 to 10 mph.
* Ventilation Index...Poor (25-69) increasing to poor to excellent
(148-848) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....59-68.
* Max humidity........38-53 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 5 mph.
* Ventilation Index...Poor (37-115) decreasing to poor (25-43)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....89-97...except 83-89 ridges.
* Min humidity........17-23 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.....Southeast around 5 mph.
* Ventilation Index...Poor (25-37) increasing to poor to fair
(155-395) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly clear. Lows 60 to 69. Highs 86 to 96.
Northeast winds 1 to 5 mph.
.THURSDAY...Mostly clear. Lows 60 to 68. Highs 84 to 95. South
winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 60 to 68. Highs 81 to 92. Southwest
winds 1 to 5 mph.
.SATURDAY...A slight chance of showers. Mostly cloudy. Lows 58 to
67. Highs 77 to 87. Terrain driven winds less than 5 mph.
.SUNDAY...A slight chance of showers. Mostly cloudy. Lows 54 to
62. Highs 72 to 82. West winds 1 to 5 mph.
$$
ORZ693-WAZ693-011145-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....58-67.
* Max humidity........29-42 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 2 to 7 mph.
* Ridges/upr slopes....South winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast around 10 mph.
* Ventilation Index...Fair (242-370) decreasing to poor (25-89)
after midnight.
.LABOR DAY...
* Sky/weather.........Partly cloudy. Hazy.
* Max temperature.....90-98...except 83-90 ridges.
* Min humidity........12-17 percent.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 1 to 6 mph.
* Ridges/upr slopes....South winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......14500 ft agl.
* Transport winds.....South around 10 mph.
* Ventilation Index...Poor (25-134) increasing to good to excellent
(624-1042) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....59-67.
* Max humidity........32-45 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 south 2
to 6 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 (102-220) decreasing to poor
(25-66) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....91-100...except 84-91 ridges.
* Min humidity........12-17 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.......17000 ft agl.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Poor (25-56) increasing to fair (222-484) in
the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly clear. Lows 58 to 68. Highs 89 to 98. East
winds 1 to 5 mph.
.THURSDAY...Mostly clear. Lows 58 to 67. Highs 87 to 97.
Southwest winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 57 to 67. Highs 84 to 94. Southwest
winds 1 to 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
56 to 66. Highs 80 to 89. Southwest winds 1 to 5 mph.
.SUNDAY...Mostly cloudy with a slight chance of showers. Lows
53 to 62. Highs 75 to 85. West winds 1 to 5 mph.
$$
ORZ701-011145-
Eastern Columbia River Gorge of Oregon-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Hazy.
* Min temperature.....55-60.
* Max humidity........68-83 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 4 to 9 mph.
* Ridges/upr slopes....West winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Poor to fair (125-239) decreasing to poor
(26-110) after midnight.
.LABOR DAY...
* Sky/weather.........Partly cloudy. Hazy.
* Max temperature.....86-91...except 81-88 ridges.
* Min humidity........29-44 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Winds northwest winds 1 to 6 mph.
* Ridges/upr slopes....West winds 1 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (25-123) increasing to poor to fair
(144-246) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....57-63.
* Max humidity........63-78 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 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 (95-195) decreasing to poor (25-86)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....92-97.
* Min humidity........19-29 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.......7000 ft agl.
* Transport winds.....Southwest around 5 mph shifting to the
southeast in the afternoon.
* Ventilation Index...Poor (25-41) increasing to poor to fair
(105-227) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Partly cloudy. Lows 63 to 69. Highs 93 to 98.
Northwest winds 1 to 5 mph.
.THURSDAY...Partly cloudy. Lows 62 to 67. Highs 90 to 96. West
winds 1 to 5 mph.
.FRIDAY...Partly cloudy. Lows 62 to 67. Highs 87 to 92. West
winds 1 to 6 mph.
.SATURDAY...Mostly cloudy. Lows 58 to 64. Highs 81 to 87. West
winds 2 to 7 mph.
.SUNDAY...Partly cloudy. Lows 56 to 61. Highs 79 to 84. West
winds 3 to 8 mph.
$$
ORZ702-011145-
East Slopes of the Mt. Hood National Forest-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Hazy.
* Min temperature.....51-60.
* Max humidity........57-72 percent.
* Humidity recovery...Moderate...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest 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.....West around 10 mph.
* Ventilation Index...Poor (59-191) decreasing to poor (25-67)
after midnight.
.LABOR DAY...
* Sky/weather.........Partly cloudy. Hazy.
* Max temperature.....83-89...except 76-84 ridges.
* Min humidity........28-40 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.......7000 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Poor (25-52) increasing to poor to fair
(152-286) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....55-63.
* Max humidity........53-68 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.....West 5 to 10 mph.
* Ventilation Index...Poor (39-127) decreasing to poor (25-42)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....90-96...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.......10500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-31) increasing to fair (248-494) in
the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Partly cloudy. Lows 61 to 69. Highs 83 to 95.
Terrain driven winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 59 to 66. Highs 80 to 94. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 58 to 66. Highs 77 to 90. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy. Lows 55 to 63. Highs 72 to 85. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy. Lows 52 to 59. Highs 69 to 82. Terrain
driven winds less than 5 mph.
$$
ORZ695-011145-
Eagle Cap Wilderness-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy in the evening.
* Min temperature.....60-66...except 55-63 ridges.
* Max humidity........27-36 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Southeast winds 2 to 7 mph.
* Ridges/upr slopes....Southeast winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast around 10 mph.
* Ventilation Index...Poor to fair (144-320) decreasing to poor
(25-100) after midnight.
.LABOR DAY...
* Sky/weather.........Partly cloudy. Hazy.
* Max temperature.....84-94...except 72-83 ridges.
* Min humidity........15-21 percent.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 2 to 7 mph.
* Ridges/upr slopes....South winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13000 ft agl.
* Transport winds.....South 10 to 15 mph.
* Ventilation Index...Poor (25-172) increasing to good to excellent
(648-1050) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....62-67...except 57-64 ridges.
* Max humidity........29-37 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....East winds 1 to 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 (79-225) decreasing to poor
(25-67) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....86-96...except 75-85 ridges.
* Min humidity........16-21 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Southeast 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.....Southeast around 5 mph.
* Ventilation Index...Poor (25-49) increasing to fair to good
(316-590) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Partly cloudy. Lows 57 to 65. Highs 77 to 92.
Northeast winds 1 to 5 mph.
.THURSDAY...Mostly clear. Lows 55 to 64. Highs 76 to 91. West
winds 1 to 5 mph.
.FRIDAY...Partly cloudy. Lows 54 to 64. Highs 73 to 88. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
53 to 63. Highs 69 to 84. Terrain driven winds less than 5 mph.
.SUNDAY...A slight chance of showers. Mostly cloudy. Lows 49 to
59. Highs 65 to 80. Terrain driven winds less than 5 mph.
$$
ORZ694-011145-
Grande Ronde Valley of Oregon-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Hazy.
* Min temperature.....55-60.
* Max humidity........40-53 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Southeast winds 5 to 11 mph shifting to the
south 2 to 5 mph after midnight.
* Ridges/upr slopes....South winds 6 to 12 mph decreasing to 3 to 6
mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Fair (264-366) decreasing to poor (33-83)
after midnight.
.LABOR DAY...
* Sky/weather.........Partly cloudy. Hazy.
* Max temperature.....92-97.
* Min humidity........12-17 percent.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 3 to 8 mph.
* Ridges/upr slopes....South winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11500 ft agl.
* Transport winds.....South 10 to 15 mph.
* Ventilation Index...Poor (72-154) increasing to excellent
(1004-1050) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Mostly clear. Hazy after midnight.
* Min temperature.....57-62.
* Max humidity........42-54 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Southeast winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Southeast winds 3 to 7 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.....South around 10 mph shifting to the north
after midnight.
* Ventilation Index...Poor to fair (166-268) decreasing to poor
(26-52) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....94-99.
* Min humidity........13-18 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* 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.......13500 ft agl.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Poor (25-32) increasing to fair to good
(377-527) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Partly cloudy. Lows 57 to 62. Highs 92 to 97.
Terrain driven winds less than 5 mph.
.THURSDAY...Mostly clear. Lows 58 to 63. Highs 91 to 96.
Northwest winds 1 to 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 slight chance of showers. Lows
57 to 62. Highs 84 to 89. Terrain driven winds less than 5 mph.
.SUNDAY...A slight chance of showers. Mostly cloudy. Lows 54 to
59. Highs 81 to 86. Terrain driven winds less than 5 mph.
$$
ORZ699-011145-
Western Forested Blue Mountains-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Hazy.
* Min temperature.....55-60.
* Max humidity........37-52 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...East winds 1 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Southeast winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast around 10 mph.
* Ventilation Index...Poor to fair (131-337) decreasing to poor
(25-71) after midnight.
.LABOR DAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Hazy.
* Max temperature.....86-92...except 80-86 ridges.
* Min humidity........16-22 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 1 to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......14000 ft agl.
* Transport winds.....South around 5 mph increasing to around 15
mph in the afternoon.
* Ventilation Index...Poor (25-77) increasing to excellent
(712-1050) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....57-63.
* Max humidity........37-52 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.....East 5 to 10 mph.
* Ventilation Index...Poor to fair (107-275) decreasing to poor
(25-50) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....89-95...except 82-89 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.......15500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Poor (25-37) increasing to fair to good
(327-663) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Partly cloudy. Lows 57 to 65. Highs 82 to 91.
Terrain driven winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 55 to 63. Highs 82 to 90. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 57 to 63. Highs 80 to 88. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
55 to 61. Highs 74 to 83. Terrain driven winds less than 5 mph.
.SUNDAY...A slight chance of showers. Partly cloudy. Lows 51 to
57. Highs 71 to 80. Terrain driven winds less than 5 mph.
$$
ORZ696-011145-
John Day Valley-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Hazy.
* Min temperature.....55-60.
* Max humidity........50-61 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....North 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.....Northwest 5 to 10 mph.
* Ventilation Index...Poor to fair (110-368) decreasing to poor
(25-77) after midnight.
.LABOR DAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....88-95...except 83-88 ridges.
* Min humidity........12-17 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 1
to 5 mph in the afternoon.
* 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 increasing to around 15
mph in the afternoon.
* Ventilation Index...Poor (25-51) increasing to excellent
(751-1050) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....57-62.
* Max humidity........44-55 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...East winds 2 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 north
after midnight.
* Ventilation Index...Poor to fair (115-369) decreasing to poor
(25-58) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....90-98...except 86-91 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.......16000 ft agl.
* Transport winds.....Southeast around 5 mph.
* Ventilation Index...Poor (25-42) increasing to fair to good
(321-551) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Partly cloudy. Lows 60 to 67. Highs 87 to 96.
Terrain driven winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 59 to 65. Highs 88 to 96. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 59 to 65. Highs 84 to 93. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
58 to 63. Highs 79 to 87. Terrain driven winds less than 5 mph.
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
54 to 59. Highs 76 to 85. Terrain driven winds less than 5 mph.
$$
ORZ700-011145-
Central Mountains of Oregon-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....47-56.
* Max humidity........63-78 percent...except 54-65 percent ridges.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 8 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 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 5 to 10 mph.
* Ventilation Index...Poor to fair (161-335) decreasing to poor
(25-46) after midnight.
.LABOR DAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....88-93...except 81-86 ridges.
* Min humidity........11-18 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming south 1 to
6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming south 2 to 6
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12500 ft agl.
* Transport winds.....South around 5 mph increasing to around 15
mph in the afternoon.
* Ventilation Index...Poor (25-45) increasing to good to excellent
(550-1050) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....48-58...except 54-59 ridges.
* Max humidity........58-73 percent...except 44-57 percent ridges.
* Humidity recovery...Good...except Moderate ridges.
* 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.....West 5 to 10 mph.
* Ventilation Index...Poor to fair (164-414) decreasing to poor
(25-36) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....90-96...except 84-89 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.......14500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-30) increasing to fair to excellent
(409-765) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows 56 to 65. Highs 86 to 93. Southeast winds
1 to 5 mph.
.THURSDAY...Partly cloudy. Lows 52 to 63. Highs 87 to 93. South
winds 1 to 5 mph.
.FRIDAY...Partly cloudy. Lows 53 to 63. Highs 84 to 90. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
50 to 61. Highs 79 to 85. Southwest winds 1 to 5 mph.
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
48 to 56. Highs 76 to 82. West winds 2 to 7 mph.
$$
ORZ703-011145-
Warm Springs Reservation-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....54-59.
* Max humidity........61-73 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 3 to 8 mph.
* Ridges/upr slopes....West winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Poor to fair (147-275) decreasing to poor
(25-60) after midnight.
.LABOR DAY...
* Sky/weather.........Partly cloudy. Hazy.
* Max temperature.....85-93...except 75-83 ridges.
* Min humidity........21-27 percent...except 27-40 percent ridges.
* 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.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-43) increasing to fair (242-382) in
the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....57-62.
* Max humidity........58-71 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 5 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming west 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 to fair (105-221) decreasing to poor
(25-39) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....91-98...except 81-90 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.......11500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-33) increasing to fair to good
(235-547) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly cloudy. Lows 64 to 69. Highs 87 to 96.
Northwest winds 1 to 5 mph.
.THURSDAY...Partly cloudy. Lows 60 to 65. Highs 87 to 96. West
winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 60 to 65. Highs 82 to 93. West
winds 1 to 6 mph.
.SATURDAY...Mostly cloudy. Lows 58 to 63. Highs 77 to 88. West
winds 2 to 7 mph.
.SUNDAY...Partly cloudy. Lows 55 to 60. Highs 74 to 85. West
winds 2 to 7 mph.
$$
ORZ704-011145-
Northern Deschutes National Forest-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Areas of smoke in the evening.
Hazy.
* Min temperature.....47-54.
* Max humidity........64-79 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Southwest winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor to fair (102-236) decreasing to poor
(25-60) after midnight.
.LABOR DAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....85-91...except 73-83 ridges.
* Min humidity........21-26 percent...except 26-37 percent ridges.
* 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.......10000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-42) increasing to fair to good
(315-613) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....50-57.
* Max humidity........63-78 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....West 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.....West 5 to 10 mph.
* Ventilation Index...Poor to fair (82-208) decreasing to poor
(25-35) after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....91-96...except 78-88 ridges.
* Min humidity........18-25 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.......13500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-37) increasing to good to excellent
(506-884) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows 57 to 63. Highs 81 to 94. Northwest winds
1 to 6 mph.
.THURSDAY...Partly cloudy. Lows 54 to 60. Highs 80 to 93. West
winds 1 to 6 mph.
.FRIDAY...Partly cloudy. Lows 54 to 60. Highs 76 to 90. West
winds 1 to 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
52 to 58. Highs 72 to 85. West winds 1 to 5 mph.
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
48 to 54. Highs 68 to 82. West winds 1 to 6 mph.
$$
ORZ705-011145-
Southern Deschutes National Forest-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy and areas of smoke.
* Min temperature.....43-50.
* Max humidity........74-89 percent...except 62-77 percent ridges.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 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 to fair (106-222) decreasing to poor
(25-33) after midnight.
.LABOR DAY...
* Sky/weather.........Mostly sunny. Areas of smoke in the morning.
Hazy.
* Max temperature.....83-88...except 73-82 ridges.
* Min humidity........11-23 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming south 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10000 ft agl.
* Transport winds.....South around 5 mph increasing to around 15
mph in the afternoon.
* Ventilation Index...Poor (28-62) increasing to excellent
(717-1045) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Mostly clear. Hazy and areas of smoke.
* Min temperature.....44-53.
* Max humidity........70-85 percent...except 58-73 percent ridges.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....West 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.....West around 10 mph shifting to the northeast
after midnight.
* Ventilation Index...Poor (78-194) decreasing to poor (25-34)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....87-92...except 77-85 ridges.
* Min humidity........16-23 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Southeast winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13500 ft agl.
* Transport winds.....Southeast around 5 mph increasing to south
around 15 mph in the afternoon.
* Ventilation Index...Poor (25-33) increasing to excellent
(814-1050) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows 51 to 59. Highs 79 to 87. Terrain driven
winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 48 to 56. Highs 80 to 88. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 49 to 56. Highs 77 to 85. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows 47 to 54. Highs 73 to 82. Terrain driven
winds less than 5 mph.
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
43 to 51. Highs 69 to 78. Terrain driven winds less than 5 mph.
$$
ORZ697-011145-
Central Blue Mountains-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Hazy.
* Min temperature.....51-59.
* Max humidity........38-53 percent.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Southeast winds 1 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Southeast winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Southeast around 10 mph.
* Ventilation Index...Fair (246-438) decreasing to poor (25-66)
after midnight.
.LABOR DAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Hazy in the morning.
* Max temperature.....84-89...except 79-85 ridges.
* Min humidity........13-18 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming south 2 to
6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming south 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13000 ft agl.
* Transport winds.....South around 5 mph increasing to around 20
mph in the afternoon.
* Ventilation Index...Poor (26-74) increasing to excellent
(909-1050) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....53-61.
* Max humidity........35-48 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...Fair (215-391) decreasing to poor (25-45)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....87-92...except 82-88 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.....Southeast around 5 mph.
* Ventilation Index...Poor (25-36) increasing to good (522-696) in
the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows 55 to 61. Highs 81 to 87. Terrain driven
winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 53 to 59. Highs 81 to 88. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 53 to 59. Highs 78 to 85. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
51 to 58. Highs 74 to 81. Terrain driven winds less than 5 mph.
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
47 to 54. Highs 71 to 77. Terrain driven winds less than 5 mph.
$$
ORZ698-011145-
Southern Blue Mountains-
142 PM PDT Sun Aug 31 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
Hazy.
* Min temperature.....50-57.
* Max humidity........45-60 percent...except 37-49 percent ridges.
* Humidity recovery...Moderate...except Poor ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Southeast winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Southeast 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.....Southeast 5 to 10 mph.
* Ventilation Index...Fair (306-442) decreasing to poor (25-50)
after midnight.
.LABOR DAY...
* Sky/weather.........Partly cloudy. Hazy in the morning.
* Max temperature.....85-91.
* Min humidity........11-16 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming south 3 to
6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming south 3 to 6
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12500 ft agl.
* Transport winds.....South around 5 mph increasing to around 15
mph in the afternoon.
* Ventilation Index...Poor (25-60) increasing to excellent
(821-1050) in the afternoon.
.MONDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....52-59.
* Max humidity........36-47 percent.
* Humidity recovery...Poor.
* 20-foot winds.......
* Valleys/lwr slopes...Southeast 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.....South around 10 mph shifting to the north
after midnight.
* Ventilation Index...Fair (256-380) decreasing to poor (25-36)
after midnight.
.TUESDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....87-92...except 82-87 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.......15000 ft agl.
* Transport winds.....North around 5 mph shifting to the southeast
in the afternoon.
* Ventilation Index...Poor (25-32) increasing to good to excellent
(508-730) in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows 55 to 60. Highs 83 to 89. North winds 1 to
5 mph.
.THURSDAY...Partly cloudy. Lows 52 to 58. Highs 85 to 90. Terrain
driven winds less than 5 mph.
.FRIDAY...Partly cloudy. Lows 53 to 59. Highs 82 to 88. Terrain
driven winds less than 5 mph.
.SATURDAY...Mostly cloudy with a slight chance of showers. Lows
51 to 56. Highs 77 to 84. Southwest winds 1 to 6 mph.
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
48 to 53. Highs 74 to 80. West winds 1 to 6 mph.
$$
.8-14 DAY OUTLOOK for Monday September 8 through Sunday September 14...
A greater chance of above normal temperatures and precipitation.
$$