Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
095
FNUS56 KPDT 272121
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
221 PM PDT Wed Aug 27 2025
.DISCUSSION...Cloudy conditions with light shower activity over
the northern half of the forecast area, along with isolated
thunderstorms over central Oregon will continue through this
evening, before some clearing takes place heading into Thursday.
The Cascades, especially up in central Washington, are expected to
see another round of shower and thunderstorm activity Thursday
afternoon and evening, before a drier period with more marginal
chances for mountain showers takes over heading into the weekend.
Temperatures will remain slightly above average.
***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.
WAZ695-281130-
East Washington South Central Cascade Mountains-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of
thunderstorms in the evening. A chance of showers. Hazy after
midnight.
* Min temperature.....54-60.
* Max humidity........71-86 percent.
* Humidity recovery...Good.
* 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....light winds less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (37-155) decreasing to poor (25-66)
after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers. A
slight chance of thunderstorms in the afternoon.
* Max temperature.....75-83...except 67-74 ridges.
* Min humidity........37-50 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....20 percent (slight chance).
* Mixing height.......9500 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Poor (25-72) increasing to fair (240-430) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....53-59.
* Max humidity........64-79 percent.
* Humidity recovery...Good.
* 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 shifting to the
southeast after midnight.
* Ventilation Index...Poor (45-135) decreasing to poor (25-56)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....80-89...except 72-79 ridges.
* Min humidity........25-35 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.......10000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-53) increasing to fair to good
(293-549) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 55 to 62. Highs 72 to 86.
Northwest winds 1 to 6 mph.
.SUNDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 50 to 57. Highs 66 to 80. West winds 2 to
7 mph.
.LABOR DAY...Mostly clear. Lows 49 to 55. Highs 70 to 84.
Northwest winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 54 to 59. Highs 75 to 88. East
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 57 to 62. Highs 75 to 89. North
winds 1 to 5 mph.
$$
WAZ690-281130-
Kittitas Valley-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Hazy. A chance of showers.
* Min temperature.....61-66.
* Max humidity........65-80 percent.
* Humidity recovery...Good.
* 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....Northwest winds 3 to 7 mph in the evening
becoming light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Poor to fair (103-209) decreasing to poor
(26-72) after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers. A
slight chance of thunderstorms in the afternoon.
* Max temperature.....83-90...except 71-84 ridges.
* Min humidity........32-39 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....20 percent (slight chance).
* Mixing height.......9000 ft agl.
* Transport winds.....Northwest around 5 mph shifting to the
southwest in the afternoon.
* Ventilation Index...Poor (25-64) increasing to fair (291-393) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....59-66.
* Max humidity........63-78 percent...except 57-67 percent ridges.
* Humidity recovery...Good...except Moderate 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.....North around 5 mph.
* Ventilation Index...Poor (89-199) decreasing to poor (25-58)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....86-94...except 76-88 ridges.
* Min humidity........22-27 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.....North around 5 mph shifting to the south in
the afternoon.
* Ventilation Index...Poor (25-51) increasing to fair (261-425) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 60 to 67. Highs 86 to 93. North
winds 1 to 6 mph.
.SUNDAY...A slight chance of showers. Partly cloudy. Lows 58 to
64. Highs 81 to 89. Northwest winds 4 to 9 mph.
.LABOR DAY...Mostly clear. Lows 56 to 62. Highs 83 to 90.
Northwest winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 59 to 66. Highs 87 to 94. North
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 62 to 69. Highs 88 to 95. North
winds 2 to 7 mph.
$$
WAZ694-281130-
Yakama Alpine District-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming mostly clear. A
slight chance of showers and thunderstorms in the evening. Hazy.
* Min temperature.....52-60.
* Max humidity........72-87 percent.
* Humidity recovery...Good.
* 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....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Poor (73-169) decreasing to poor (25-43)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Hazy in the morning.
* Max temperature.....81-88...except 70-83 ridges.
* Min humidity........26-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming south 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.......9000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-58) increasing to fair to good
(401-531) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....52-60.
* 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.....West around 5 mph.
* Ventilation Index...Poor to fair (105-207) decreasing to poor
(25-45) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....84-92...except 75-86 ridges.
* Min humidity........20-28 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 becoming south 1 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9000 ft agl.
* Transport winds.....Northwest around 5 mph shifting to the
southwest in the afternoon.
* Ventilation Index...Poor (25-37) increasing to fair (255-479) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 54 to 62. Highs 76 to 88. West
winds 2 to 7 mph.
.SUNDAY...A slight chance of showers. Mostly clear. Lows 50 to
57. Highs 72 to 84. West winds 2 to 7 mph.
.LABOR DAY...Mostly clear. Lows 49 to 56. Highs 75 to 87. West
winds 1 to 6 mph.
.TUESDAY...Mostly clear. Lows 54 to 61. Highs 78 to 91. Northeast
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 57 to 64. Highs 79 to 91. North
winds 1 to 6 mph.
$$
ORZ691-WAZ691-281130-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Hazy. A slight chance of
showers.
* Min temperature.....60-65.
* Max humidity........70-85 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....North 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.....Northwest 5 to 10 mph.
* Ventilation Index...Poor to fair (85-235) decreasing to poor
(25-44) after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
Hazy in the morning.
* Max temperature.....87-93...except 82-88 ridges.
* Min humidity........24-33 percent.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 1 to 5 mph shifting to the north
2 to 6 mph in the afternoon.
* Ridges/upr slopes....South winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (28-68) increasing to fair to good
(295-549) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....60-65.
* Max humidity........59-74 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast 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.....North 5 to 10 mph.
* Ventilation Index...Poor to fair (101-241) decreasing to poor
(25-46) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....90-95...except 85-91 ridges.
* Min humidity........20-26 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 2
to 5 mph in the afternoon.
* Ridges/upr slopes....Northwest winds 2 to 5 mph shifting to the
east 2 to 6 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Poor (25-38) increasing to poor to fair
(161-297) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 60 to 65. Highs 87 to 96. North
winds 2 to 7 mph.
.SUNDAY...Partly cloudy. Lows 58 to 64. Highs 83 to 90. West
winds 4 to 9 mph.
.LABOR DAY...Mostly clear. Lows 56 to 61. Highs 84 to 90. West
winds 3 to 8 mph.
.TUESDAY...Mostly clear. Lows 59 to 64. Highs 88 to 95. Northwest
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 61 to 66. Highs 89 to 96.
Northwest winds 1 to 6 mph.
$$
ORZ692-WAZ692-281130-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. Hazy. A chance of showers in
the evening. A slight chance of showers after midnight.
* Min temperature.....53-61.
* Max humidity........77-92 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North around 5 mph shifting to the southwest
after midnight.
* Ventilation Index...Poor (31-91) decreasing to poor (25-51) after
midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy. Hazy in the morning.
* Max temperature.....79-88...except 71-78 ridges.
* Min humidity........29-41 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.....West 5 to 10 mph.
* Ventilation Index...Poor (43-105) increasing to good to excellent
(543-857) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....55-63.
* Max humidity........58-73 percent.
* Humidity recovery...Good...except Moderate 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.....North around 5 mph shifting to the southeast
after midnight.
* Ventilation Index...Poor (55-147) decreasing to poor (25-42)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....82-92...except 75-81 ridges.
* Min humidity........22-28 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.......12000 ft agl.
* Transport winds.....Southeast around 5 mph shifting to the west
in the afternoon.
* Ventilation Index...Poor (25-41) increasing to fair to good
(382-576) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 55 to 64. Highs 81 to 92. East
winds 1 to 6 mph.
.SUNDAY...Partly cloudy. Lows 54 to 62. Highs 77 to 87. Southwest
winds 1 to 6 mph.
.LABOR DAY...Partly cloudy. Lows 53 to 61. Highs 78 to 88.
Terrain driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 54 to 62. Highs 80 to 91. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 56 to 64. Highs 80 to 90. West
winds 1 to 5 mph.
$$
ORZ693-WAZ693-281130-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers in the
evening, then a slight chance of showers after midnight. Hazy
after midnight.
* Min temperature.....50-60.
* Max humidity........82-97 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....North around 5 mph shifting to the southwest
after midnight.
* Ventilation Index...Poor (32-96) decreasing to poor (25-61) after
midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy. Hazy in the morning. A slight
chance of showers. A slight chance of thunderstorms in the
afternoon.
* Max temperature.....78-86...except 70-78 ridges.
* Min humidity........31-39 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....20 percent (slight chance).
* Mixing height.......10500 ft agl.
* Transport winds.....West around 5 mph increasing to around 15 mph
in the afternoon.
* Ventilation Index...Poor (39-111) increasing to good to excellent
(602-976) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....51-61.
* Max humidity........68-83 percent...except 62-69 percent ridges.
* Humidity recovery...Good.
* 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 shifting to the south
after midnight.
* Ventilation Index...Poor (59-131) decreasing to poor (25-47)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-90...except 73-81 ridges.
* Min humidity........23-28 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.......11500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-51) increasing to fair to good
(438-624) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 52 to 62. Highs 82 to 92. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy. Lows 53 to 63. Highs 82 to 92. South
winds 1 to 6 mph.
.LABOR DAY...Partly cloudy with a slight chance of showers. Lows
52 to 61. Highs 82 to 91. Terrain driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 53 to 62. Highs 83 to 92. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 54 to 63. Highs 82 to 91.
Northeast winds 1 to 5 mph.
$$
ORZ701-281130-
Eastern Columbia River Gorge of Oregon-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....57-62.
* Max humidity........70-85 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph. In the eastern
Columbia River Gorge, west winds 2 to 7 mph.
* Ridges/upr slopes....Northwest 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.....West 5 to 10 mph.
* Ventilation Index...Poor to fair (194-286) decreasing to poor
(25-72) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....86-91.
* Min humidity........26-36 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph. In the eastern
Columbia River Gorge, upslope less than 5 mph becoming north
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.......10000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (26-58) increasing to fair (282-486) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....56-62.
* Max humidity........58-73 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph. In the eastern
Columbia River Gorge, west winds 1 to 6 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...Fair (203-297) decreasing to poor (25-73)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....89-94.
* Min humidity........23-30 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.....West around 5 mph shifting to the southeast
in the afternoon.
* Ventilation Index...Poor (25-36) increasing to poor to fair
(195-279) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 57 to 63. Highs 82 to 89. West
winds 2 to 7 mph.
.SUNDAY...Mostly clear. Lows 53 to 58. Highs 79 to 85. West winds
4 to 9 mph.
.LABOR DAY...Mostly clear. Lows 52 to 58. Highs 83 to 88. West
winds 3 to 8 mph.
.TUESDAY...Mostly clear. Lows 56 to 61. Highs 88 to 93. Northwest
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 60 to 65. Highs 88 to 93.
Northwest winds 1 to 5 mph.
$$
ORZ702-281130-
East Slopes of the Mt. Hood National Forest-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....54-61.
* Max humidity........62-77 percent.
* Humidity recovery...Good.
* 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 around 10 mph.
* Ventilation Index...Poor to fair (102-232) decreasing to poor
(25-53) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....85-90...except 77-85 ridges.
* Min humidity........27-36 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.......10000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-54) increasing to fair to excellent
(464-714) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....54-61.
* Max humidity........49-63 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 to fair (131-245) decreasing to poor
(25-47) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....86-91...except 79-87 ridges.
* Min humidity........24-31 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.....Southeast 5 to 10 mph.
* Ventilation Index...Poor (25-31) increasing to fair (270-398) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 53 to 61. Highs 73 to 87. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 48 to 56. Highs 69 to 84. West winds
1 to 6 mph.
.LABOR DAY...Mostly clear. Lows 48 to 56. Highs 73 to 86. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 53 to 60. Highs 78 to 90. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 57 to 64. Highs 78 to 91. Terrain
driven winds less than 5 mph.
$$
ORZ695-281130-
Eagle Cap Wilderness-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers in the
evening, then a slight chance of showers after midnight. Hazy
after midnight.
* Min temperature.....51-58...except 44-52 ridges.
* Max humidity........81-96 percent.
* Humidity recovery...Excellent.
* 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 around 5 mph.
* Ventilation Index...Poor (30-118) decreasing to poor (25-65)
after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....74-84...except 62-73 ridges.
* Min humidity........31-46 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.......10000 ft agl.
* Transport winds.....West 10 to 15 mph.
* Ventilation Index...Poor (27-137) increasing to good to excellent
(587-913) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....54-60...except 48-55 ridges.
* Max humidity........59-74 percent.
* Humidity recovery...Good.
* 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.....North around 5 mph.
* Ventilation Index...Poor (60-126) decreasing to poor (25-51)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....76-87...except 65-76 ridges.
* Min humidity........25-38 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.......12000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor (25-49) increasing to fair to good
(391-681) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 51 to 60. Highs 72 to 87. East
winds 1 to 5 mph.
.SUNDAY...Partly cloudy. Lows 52 to 60. Highs 72 to 87. Southeast
winds 1 to 6 mph.
.LABOR DAY...A slight chance of showers. Partly cloudy. Lows
51 to 59. Highs 71 to 86. Southeast winds 1 to 5 mph.
.TUESDAY...Mostly clear. Lows 52 to 60. Highs 73 to 88. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 51 to 60. Highs 72 to 87.
Northwest winds 1 to 5 mph.
$$
ORZ694-281130-
Grande Ronde Valley of Oregon-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers in the evening. Hazy.
* Min temperature.....51-56.
* Max humidity........84-99 percent.
* Humidity recovery...Excellent.
* 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 shifting to the south
after midnight.
* Ventilation Index...Poor (107-153) decreasing to poor (29-57)
after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
Hazy in the morning.
* Max temperature.....84-89.
* Min humidity........26-31 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming north 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (42-86) increasing to excellent
(744-936) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....52-57.
* Max humidity........70-85 percent.
* Humidity recovery...Good.
* 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.....North around 5 mph.
* Ventilation Index...Poor (125-187) decreasing to poor (27-51)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....86-91.
* Min humidity........23-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming north 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11500 ft agl.
* Transport winds.....Northeast around 5 mph shifting to the west
in the afternoon.
* Ventilation Index...Poor (25-41) increasing to fair to good
(376-528) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 52 to 57. Highs 88 to 93.
Southeast winds 1 to 6 mph.
.SUNDAY...Partly cloudy. Lows 53 to 58. Highs 87 to 92. South
winds 2 to 7 mph.
.LABOR DAY...Partly cloudy. Lows 52 to 57. Highs 87 to 92.
Northwest winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 53 to 58. Highs 88 to 93. North
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 54 to 59. Highs 88 to 93. Terrain
driven winds less than 5 mph.
$$
ORZ699-281130-
Western Forested Blue Mountains-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers in the evening. Hazy.
* Min temperature.....49-56.
* Max humidity........73-88 percent.
* Humidity recovery...Good...except Excellent 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.....West 5 to 10 mph.
* Ventilation Index...Poor to fair (85-203) decreasing to poor
(25-50) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny. Hazy in the morning.
* Max temperature.....79-85...except 72-80 ridges.
* Min humidity........24-33 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.....Southwest around 5 mph increasing to west
around 15 mph in the afternoon.
* Ventilation Index...Poor (40-106) increasing to excellent
(770-982) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....51-59.
* 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.....Northeast 5 to 10 mph.
* Ventilation Index...Poor to fair (83-211) decreasing to poor
(25-49) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-88...except 74-82 ridges.
* Min humidity........22-29 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.......13000 ft agl.
* Transport winds.....East around 5 mph shifting to the southwest
in the afternoon.
* Ventilation Index...Poor (25-39) increasing to fair to good
(410-636) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 53 to 60. Highs 78 to 87. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy. Lows 51 to 57. Highs 76 to 86. Terrain
driven winds less than 5 mph.
.LABOR DAY...Partly cloudy. Lows 51 to 56. Highs 77 to 86.
Terrain driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 52 to 58. Highs 78 to 87. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 53 to 59. Highs 78 to 87. Terrain
driven winds less than 5 mph.
$$
ORZ696-281130-
John Day Valley-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy in the evening.
* Min temperature.....54-59.
* Max humidity........67-80 percent.
* Humidity recovery...Good.
* 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....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.....West 5 to 10 mph.
* Ventilation Index...Poor to fair (195-313) decreasing to poor
(25-46) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....82-90...except 78-83 ridges.
* Min humidity........20-25 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.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (31-79) increasing to excellent
(742-978) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....54-61.
* Max humidity........53-66 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.....Northeast 5 to 10 mph.
* Ventilation Index...Poor to fair (150-278) decreasing to poor
(25-66) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....84-92...except 79-84 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.......14000 ft agl.
* Transport winds.....East around 5 mph shifting to the south in
the afternoon.
* Ventilation Index...Poor (25-50) increasing to fair to good
(342-548) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 55 to 62. Highs 84 to 93. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy. Lows 53 to 58. Highs 81 to 90. West
winds 1 to 5 mph.
.LABOR DAY...Partly cloudy. Lows 52 to 58. Highs 82 to 91.
Northwest winds 1 to 5 mph.
.TUESDAY...Mostly clear. Lows 54 to 60. Highs 83 to 92. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 56 to 61. Highs 84 to 92.
Northeast winds 1 to 5 mph.
$$
ORZ700-281130-
Central Mountains of Oregon-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers and
thunderstorms in the evening.
* Min temperature.....48-57.
* Max humidity........71-86 percent...except 66-75 percent ridges.
* Humidity recovery...Good.
* 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....Northwest winds 1 to 6 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Fair (219-315) decreasing to poor (25-32)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....83-89...except 77-82 ridges.
* Min humidity........17-24 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 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.......12500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (32-72) increasing to excellent
(737-1050) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....48-58.
* Max humidity........58-73 percent...except 52-59 percent ridges.
* Humidity recovery...Good...except Moderate 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.....North around 10 mph.
* Ventilation Index...Fair (268-446) decreasing to poor (25-53)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....85-91...except 79-84 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.......13500 ft agl.
* Transport winds.....Southeast 5 to 10 mph.
* Ventilation Index...Poor (25-30) increasing to fair to good
(360-668) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 48 to 58. Highs 84 to 90.
Southwest winds 1 to 6 mph.
.SUNDAY...Partly cloudy. Lows 46 to 54. Highs 82 to 87. West
winds 2 to 7 mph.
.LABOR DAY...Mostly clear. Lows 46 to 54. Highs 82 to 88.
Northwest winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 48 to 57. Highs 83 to 90. North
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 51 to 59. Highs 84 to 90. North
winds 2 to 7 mph.
$$
ORZ703-281130-
Warm Springs Reservation-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....56-61.
* Max humidity........65-76 percent.
* Humidity recovery...Good.
* 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....West 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 (181-285) decreasing to poor
(25-46) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....86-93...except 75-84 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 becoming southwest 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-53) increasing to good to excellent
(545-787) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....56-61.
* Max humidity........53-63 percent.
* Humidity recovery...Moderate.
* 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....Northwest 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.....West 5 to 10 mph.
* Ventilation Index...Poor to fair (193-327) decreasing to poor
(25-40) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....87-94...except 76-86 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 around 5 mph.
* Ventilation Index...Poor (25-27) increasing to fair (222-406) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 55 to 60. Highs 79 to 92. West
winds 1 to 6 mph.
.SUNDAY...Mostly clear. Lows 51 to 56. Highs 76 to 88. West winds
3 to 8 mph.
.LABOR DAY...Mostly clear. Lows 51 to 56. Highs 79 to 89.
Northwest winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 54 to 59. Highs 83 to 92. North
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 58 to 63. Highs 83 to 93. North
winds 2 to 7 mph.
$$
ORZ704-281130-
Northern Deschutes National Forest-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-56.
* Max humidity........67-81 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 1 to 6 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 (176-306) decreasing to poor
(25-57) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....85-91...except 72-82 ridges.
* Min humidity........23-34 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Southwest winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....Southwest around 5 mph increasing to around
15 mph in the afternoon.
* Ventilation Index...Poor (29-89) increasing to excellent
(714-920) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-56.
* Max humidity........54-69 percent.
* Humidity recovery...Moderate.
* 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....West 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 (169-323) decreasing to poor
(25-41) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....86-92...except 73-83 ridges.
* Min humidity........23-31 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.......12000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-33) increasing to fair to good
(342-680) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 49 to 56. Highs 72 to 87. West
winds 1 to 5 mph.
.SUNDAY...Mostly clear. Lows 45 to 51. Highs 71 to 85. West winds
2 to 7 mph.
.LABOR DAY...Mostly clear. Lows 46 to 51. Highs 73 to 87. West
winds 1 to 6 mph.
.TUESDAY...Mostly clear. Lows 49 to 54. Highs 76 to 89. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 51 to 58. Highs 77 to 90.
Northeast winds 2 to 7 mph.
$$
ORZ705-281130-
Southern Deschutes National Forest-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....44-51.
* Max humidity........78-93 percent...except 66-81 percent ridges.
* Humidity recovery...Excellent...except Good 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.....West 5 to 10 mph.
* Ventilation Index...Fair (202-320) decreasing to poor (25-31)
after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-86...except 72-80 ridges.
* Min humidity........18-30 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.......12000 ft agl.
* Transport winds.....South around 5 mph increasing to southwest
around 15 mph in the afternoon.
* Ventilation Index...Poor (45-91) increasing to excellent
(897-1050) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-53.
* Max humidity........66-81 percent...except 54-69 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.....North 5 to 10 mph.
* Ventilation Index...Poor to fair (175-367) decreasing to poor
(25-43) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....82-87...except 73-81 ridges.
* Min humidity........16-27 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 (25-29) increasing to excellent
(715-941) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 44 to 52. Highs 74 to 85. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy. Lows 41 to 48. Highs 74 to 84. West
winds up to 5 mph.
.LABOR DAY...Mostly clear. Lows 42 to 49. Highs 76 to 85. West
winds up to 5 mph.
.TUESDAY...Mostly clear. Lows 44 to 51. Highs 77 to 86. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 46 to 54. Highs 77 to 86. Terrain
driven winds less than 5 mph.
$$
ORZ697-281130-
Central Blue Mountains-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming mostly clear. A
slight chance of showers and thunderstorms in the evening. Hazy.
* Min temperature.....46-53.
* Max humidity........78-93 percent.
* Humidity recovery...Excellent.
* 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....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor to fair (131-239) decreasing to poor
(25-40) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....78-83...except 72-79 ridges.
* Min humidity........21-29 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.......11500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (45-95) increasing to excellent
(811-1017) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....48-55.
* Max humidity........60-75 percent.
* Humidity recovery...Good...except Moderate 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.....North around 10 mph shifting to the east
after midnight.
* Ventilation Index...Poor (59-157) decreasing to poor (25-54)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....79-85...except 73-81 ridges.
* Min humidity........19-28 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.......13500 ft agl.
* Transport winds.....East around 5 mph shifting to the southwest
in the afternoon.
* Ventilation Index...Poor (25-49) increasing to fair to good
(451-631) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 49 to 56. Highs 77 to 85. East
winds 1 to 5 mph.
.SUNDAY...Partly cloudy. Lows 48 to 55. Highs 78 to 85. Southeast
winds 1 to 5 mph.
.LABOR DAY...Partly cloudy. Lows 48 to 54. Highs 77 to 85.
Terrain driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 49 to 56. Highs 78 to 85. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 50 to 56. Highs 77 to 84.
Terrain driven winds less than 5 mph.
$$
ORZ698-281130-
Southern Blue Mountains-
221 PM PDT Wed Aug 27 2025
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming mostly clear.
Hazy in the evening. A slight chance of showers and thunderstorms
in the evening.
* Min temperature.....48-53.
* Max humidity........81-96 percent...except 76-85 percent ridges.
* Humidity recovery...Excellent.
* 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....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Poor to fair (145-223) decreasing to poor
(25-38) after midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....78-83...except 73-79 ridges.
* Min humidity........17-23 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 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.......11500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-56) increasing to excellent
(799-953) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-54.
* Max humidity........62-77 percent...except 56-66 percent ridges.
* Humidity recovery...Good...except Moderate 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.....North around 10 mph.
* Ventilation Index...Poor to fair (80-230) decreasing to poor
(25-58) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....81-86.
* Min humidity........16-21 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.......13500 ft agl.
* Transport winds.....East around 5 mph shifting to the south in
the afternoon.
* Ventilation Index...Poor (25-42) increasing to fair to good
(432-592) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 49 to 55. Highs 82 to 88. East
winds 1 to 6 mph.
.SUNDAY...Partly cloudy. Lows 48 to 55. Highs 82 to 88. Northwest
winds 1 to 6 mph.
.LABOR DAY...Partly cloudy. Lows 48 to 54. Highs 81 to 87.
Northwest winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 50 to 56. Highs 82 to 88. East
winds 1 to 5 mph.
.WEDNESDAY...Partly cloudy. Lows 51 to 56. Highs 81 to 87.
Terrain driven winds less than 5 mph.
$$
.8-14 DAY OUTLOOK for Thursday September 4 through Wednesday September 10...
A greater chance of above normal temperatures and precipitation.
$$