Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
375
FNUS56 KPDT 281334
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
634 AM PDT Thu Aug 28 2025
.DISCUSSION...
There is a chance of showers and thunderstorms today, mainly for
the Washington Cascades. Otherwise, dry weather is expected into
the weekend and early next week, except for a slight chance of a
few mountain showers. Temperatures are expected to remain above
normal, with some diurnal breezes each day.
***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.
WAZ695-282330-
East Washington South Central Cascade Mountains-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Partly cloudy. Hazy. A slight chance of
showers in the morning. A chance of showers and a slight chance
of thunderstorms in the afternoon.
* Max temperature.....76-83...except 66-74 ridges.
* Min humidity........36-46 percent...except 42-57 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......9500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (27-61) increasing to fair (267-453) in
the afternoon.
.TONIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the evening. Hazy.
* Min temperature.....53-60.
* 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 south
after midnight.
* Ventilation Index...Poor (51-133) decreasing to poor (25-45)
after midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
Hazy.
* Max temperature.....81-89...except 72-80 ridges.
* Min humidity........25-35 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.....South 5 to 10 mph.
* Ventilation Index...Poor (25-43) increasing to fair (324-476) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 55 to 62. Highs 73 to 88.
Northwest winds 1 to 6 mph.
.SUNDAY...A slight chance of showers. Partly cloudy. Lows 52 to
59. Highs 69 to 84. West winds 2 to 7 mph.
.LABOR DAY...Partly cloudy. Lows 51 to 58. Highs 74 to 88. West
winds 1 to 6 mph.
.TUESDAY...Mostly clear. Lows 55 to 62. Highs 78 to 93. East
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 58 to 65. Highs 79 to 92.
Northwest winds 1 to 5 mph.
$$
WAZ690-282330-
Kittitas Valley-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
Hazy. A slight chance of showers in the morning. A chance of
showers and a slight chance of thunderstorms in the afternoon.
* Max temperature.....83-89...except 71-84 ridges.
* Min humidity........32-41 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....20 percent (slight chance).
* Mixing height.......9000 ft agl.
* Transport winds.....Northeast around 5 mph shifting to the south
in the afternoon.
* Ventilation Index...Poor (34-66) increasing to fair (350-458) in
the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....59-66.
* Max humidity........62-77 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.....Northwest around 5 mph.
* Ventilation Index...Poor (70-170) decreasing to poor (28-48)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....87-93...except 77-88 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.......9000 ft agl.
* Transport winds.....Northeast around 5 mph shifting to the south
in the afternoon.
* Ventilation Index...Poor (28-48) increasing to fair (297-425) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Hazy. Lows 60 to 67. Highs 87 to 94.
North winds 1 to 6 mph.
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
60 to 67. Highs 84 to 92. Northwest winds 3 to 8 mph.
.LABOR DAY...Partly cloudy. Lows 58 to 65. Highs 86 to 93.
Northwest winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 60 to 68. Highs 91 to 97. Northeast
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 64 to 71. Highs 92 to 98. North
winds 2 to 7 mph.
$$
WAZ694-282330-
Yakama Alpine District-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....81-88...except 71-83 ridges.
* Min humidity........25-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......9500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (25-42) increasing to fair to good
(430-560) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy after midnight.
* Min temperature.....53-61.
* Max humidity........57-72 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.....West around 5 mph.
* Ventilation Index...Poor (109-195) decreasing to poor (25-40)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....85-93...except 76-87 ridges.
* Min humidity........19-26 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.....Northeast around 5 mph shifting to the
southwest in the afternoon.
* Ventilation Index...Poor (25-33) increasing to fair (264-480) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Hazy. Lows 54 to 62. Highs 78 to 89.
Northwest winds 2 to 7 mph.
.SUNDAY...Partly cloudy with a slight chance of showers. Lows
51 to 59. Highs 75 to 87. West winds 1 to 6 mph.
.LABOR DAY...Mostly clear. Lows 50 to 59. Highs 78 to 89. West
winds 1 to 6 mph.
.TUESDAY...Mostly clear. Lows 55 to 63. Highs 83 to 94. North
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 58 to 66. Highs 84 to 96. West
winds 1 to 5 mph.
$$
ORZ691-WAZ691-282330-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....87-92...except 82-89 ridges.
* Min humidity........23-33 percent.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 1 to 5 mph shifting to the west
2 to 6 mph in the afternoon.
* Ridges/upr slopes....Southwest winds 2 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11000 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (29-65) increasing to fair to good
(299-545) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy.
* 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....Northwest winds 2 to 6 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 (89-219) decreasing to poor
(25-40) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....91-96...except 86-92 ridges.
* Min humidity........20-26 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to
5 mph in the afternoon.
* Ridges/upr slopes....Northwest winds 1 to 5 mph shifting to the
east 2 to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10000 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Poor (25-39) increasing to poor to fair
(113-261) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Hazy. Lows 60 to 65. Highs 88 to 96.
North winds 2 to 7 mph.
.SUNDAY...Partly cloudy. Lows 59 to 65. Highs 85 to 92. West
winds 4 to 9 mph.
.LABOR DAY...Partly cloudy. Lows 58 to 63. Highs 87 to 93. West
winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 60 to 65. Highs 91 to 97. West
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 63 to 68. Highs 93 to 99. West
winds 1 to 6 mph.
$$
ORZ692-WAZ692-282330-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
Hazy.
* Max temperature.....79-88...except 72-79 ridges.
* Min humidity........28-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 5
mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (46-84) increasing to fair to excellent
(484-734) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....54-63.
* Max humidity........54-69 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.....North around 5 mph shifting to the southeast
after midnight.
* Ventilation Index...Poor (49-131) decreasing to poor (25-43)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....83-92...except 76-82 ridges.
* Min humidity........21-27 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.......11500 ft agl.
* Transport winds.....South around 5 mph shifting to the west in
the afternoon.
* Ventilation Index...Poor (25-45) increasing to fair to good
(341-561) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 55 to 64. Highs 81 to 92. East
winds 1 to 5 mph.
.SUNDAY...Partly cloudy. Lows 55 to 64. Highs 80 to 90. Southeast
winds 1 to 6 mph.
.LABOR DAY...Partly cloudy. Lows 55 to 63. Highs 81 to 90.
Terrain driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 57 to 65. Highs 83 to 93. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 58 to 66. Highs 83 to 94. West
winds 1 to 5 mph.
$$
ORZ693-WAZ693-282330-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
Hazy.
* Max temperature.....78-86...except 71-77 ridges.
* Min humidity........29-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Southwest winds 2 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (45-93) increasing to fair to excellent
(488-824) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....51-61.
* Max humidity........63-78 percent...except 58-64 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.....Northeast around 5 mph shifting to the south
after midnight.
* Ventilation Index...Poor (77-129) decreasing to poor (25-46)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....82-91...except 74-82 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.......12000 ft agl.
* Transport winds.....Southwest around 5 mph shifting to the
northwest in the afternoon.
* Ventilation Index...Poor (25-48) increasing to fair to good
(467-665) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 52 to 62. Highs 83 to 93. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy. Lows 53 to 63. Highs 85 to 94. Southeast
winds 1 to 6 mph.
.LABOR DAY...Partly cloudy. Lows 54 to 64. Highs 84 to 94.
Southeast winds 1 to 5 mph.
.TUESDAY...Partly cloudy. Lows 55 to 65. Highs 86 to 96. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 56 to 66. Highs 85 to 95. North
winds 1 to 5 mph.
$$
ORZ701-282330-
Eastern Columbia River Gorge of Oregon-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....87-92.
* Min humidity........26-35 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph. In the eastern
Columbia River Gorge, upslope less than 5 mph becoming
northwest 2 to 6 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.....West 5 to 10 mph.
* Ventilation Index...Poor (25-56) increasing to fair (295-457) in
the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy in the evening.
* Min temperature.....57-62.
* Max humidity........58-73 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.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Fair (212-280) decreasing to poor (26-68)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy in the afternoon.
* Max temperature.....89-94.
* Min humidity........23-30 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph in the afternoon.
Upslope less than 5 mph in the morning.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Poor (25-42) increasing to poor to fair
(126-274) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Hazy. Lows 57 to 63. Highs 83 to 90.
West winds 2 to 7 mph.
.SUNDAY...Partly cloudy. Lows 54 to 60. Highs 81 to 87. West
winds 3 to 8 mph.
.LABOR DAY...Mostly clear. Lows 54 to 59. Highs 85 to 90. West
winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 58 to 63. Highs 90 to 95. Northwest
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 61 to 66. Highs 91 to 97.
Northwest winds 1 to 5 mph.
$$
ORZ702-282330-
East Slopes of the Mt. Hood National Forest-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....85-90...except 77-85 ridges.
* Min humidity........26-35 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 (25-47) increasing to fair to good
(419-623) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....55-62.
* Max humidity........49-64 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 (117-231) decreasing to poor
(25-41) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....87-93...except 80-88 ridges.
* Min humidity........24-30 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.......8500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-35) increasing to fair (267-395) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Hazy. Lows 54 to 62. Highs 74 to 88.
Terrain driven winds less than 5 mph.
.SUNDAY...Partly cloudy. Lows 50 to 58. Highs 71 to 85. West
winds 1 to 6 mph.
.LABOR DAY...Mostly clear. Lows 50 to 58. Highs 76 to 88. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 55 to 62. Highs 81 to 93. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 58 to 66. Highs 81 to 95. Terrain
driven winds less than 5 mph.
$$
ORZ695-282330-
Eagle Cap Wilderness-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
Hazy.
* Max temperature.....74-84...except 63-73 ridges.
* Min humidity........30-45 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming west 2 to 5
mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10000 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (36-94) increasing to fair to excellent
(489-773) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....54-61...except 48-56 ridges.
* Max humidity........56-71 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.....North around 5 mph shifting to the southeast
after midnight.
* Ventilation Index...Poor (39-95) decreasing to poor (25-46) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....77-88...except 65-76 ridges.
* Min humidity........23-36 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.......11500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Poor (25-46) increasing to fair to good
(385-619) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 51 to 59. Highs 72 to 87.
Northeast winds 1 to 5 mph.
.SUNDAY...Partly cloudy. Lows 53 to 61. Highs 74 to 89. Southeast
winds 2 to 7 mph.
.LABOR DAY...Partly cloudy. Lows 54 to 62. Highs 73 to 88.
Southeast winds 1 to 5 mph.
.TUESDAY...Partly cloudy. Lows 54 to 62. Highs 75 to 90. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 54 to 63. Highs 75 to 90.
Northwest winds 1 to 5 mph.
$$
ORZ694-282330-
Grande Ronde Valley of Oregon-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....84-89.
* Min humidity........25-30 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming east 3 to 6
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 (42-74) increasing to good to excellent
(610-754) in the afternoon.
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....52-57.
* Max humidity........68-83 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.....Northeast around 5 mph.
* Ventilation Index...Poor (47-163) decreasing to poor (28-44)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....86-91.
* Min humidity........21-26 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....Southeast around 5 mph shifting to the west
in the afternoon.
* Ventilation Index...Poor (25-35) increasing to fair (330-404) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 52 to 57. Highs 88 to 93.
Southeast winds 1 to 5 mph.
.SUNDAY...Partly cloudy. Lows 54 to 59. Highs 89 to 94. Southeast
winds 2 to 7 mph.
.LABOR DAY...Partly cloudy. Lows 54 to 59. Highs 89 to 94. South
winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 55 to 60. Highs 90 to 95. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 56 to 61. Highs 90 to 95. Terrain
driven winds less than 5 mph.
$$
ORZ699-282330-
Western Forested Blue Mountains-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....79-86...except 72-80 ridges.
* Min humidity........24-32 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.......11000 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (37-83) increasing to excellent
(700-892) in the afternoon.
.TONIGHT...
* Sky/weather.........Partly cloudy. Hazy.
* Min temperature.....52-59.
* Max humidity........54-69 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.....North around 5 mph shifting to the east after
midnight.
* Ventilation Index...Poor (43-149) decreasing to poor (25-46)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....82-89...except 75-83 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.......12500 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
(347-517) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 52 to 61. Highs 79 to 88. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy. Lows 53 to 59. Highs 78 to 87. Terrain
driven winds less than 5 mph.
.LABOR DAY...Partly cloudy. Lows 53 to 58. Highs 78 to 87.
Terrain driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 54 to 60. Highs 80 to 90. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 56 to 62. Highs 81 to 90. Terrain
driven winds less than 5 mph.
$$
ORZ696-282330-
John Day Valley-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....82-90...except 78-83 ridges.
* Min humidity........19-25 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.....South 5 to 10 mph.
* Ventilation Index...Poor (37-73) increasing to good to excellent
(674-908) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....55-61.
* Max humidity........52-65 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 around 5 mph.
* Ventilation Index...Poor to fair (92-200) decreasing to poor
(25-53) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....85-94...except 80-85 ridges.
* 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.....Southeast around 5 mph shifting to the
southwest in the afternoon.
* Ventilation Index...Poor (25-46) increasing to fair (265-433) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 56 to 62. Highs 86 to 94. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy. Lows 55 to 60. Highs 83 to 92. Terrain
driven winds less than 5 mph.
.LABOR DAY...Partly cloudy. Lows 54 to 59. Highs 84 to 92. North
winds 1 to 5 mph.
.TUESDAY...Mostly clear. Lows 56 to 62. Highs 86 to 95. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 58 to 64. Highs 87 to 95. Terrain
driven winds less than 5 mph.
$$
ORZ700-282330-
Central Mountains of Oregon-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....84-89...except 76-82 ridges.
* Min humidity........15-23 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 becoming southwest 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (38-78) increasing to good to excellent
(696-1050) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Patchy smoke in the evening.
Hazy.
* Min temperature.....48-58.
* Max humidity........58-73 percent...except 52-60 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 5 to 10 mph.
* Ventilation Index...Fair (227-409) decreasing to poor (25-41)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....85-91...except 79-85 ridges.
* Min humidity........13-20 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......12500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-30) increasing to fair to good
(304-590) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 48 to 59. Highs 85 to 90. West
winds 1 to 6 mph.
.SUNDAY...Partly cloudy. Lows 47 to 55. Highs 83 to 89. West
winds 2 to 7 mph.
.LABOR DAY...Partly cloudy. Lows 47 to 55. Highs 84 to 89. West
winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 49 to 58. Highs 85 to 91. Southwest
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 52 to 61. Highs 87 to 93. North
winds 1 to 6 mph.
$$
ORZ703-282330-
Warm Springs Reservation-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Hazy.
* 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 (25-43) increasing to fair to good
(495-697) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy in the evening.
* Min temperature.....56-61.
* Max humidity........53-64 percent.
* Humidity recovery...Moderate.
* 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....West 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 (199-303) decreasing to poor
(25-34) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy. Patchy smoke in the
afternoon.
* Max temperature.....88-95...except 77-86 ridges.
* Min humidity........19-26 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......10500 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Poor (25-30) increasing to fair (225-397) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Hazy. Lows 57 to 62. Highs 81 to 92.
Northwest winds 1 to 6 mph.
.SUNDAY...Partly cloudy. Lows 52 to 57. Highs 78 to 89. West
winds 2 to 7 mph.
.LABOR DAY...Mostly clear. Lows 52 to 57. Highs 81 to 90.
Northwest winds 2 to 7 mph.
.TUESDAY...Mostly clear. Lows 56 to 61. Highs 85 to 93. Northeast
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 60 to 65. Highs 86 to 96.
Northwest winds 1 to 6 mph.
$$
ORZ704-282330-
Northern Deschutes National Forest-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Areas of smoke in the morning.
Hazy. Patchy smoke in the afternoon.
* Max temperature.....85-91...except 71-82 ridges.
* Min humidity........21-26 percent...except 25-38 percent ridges.
* 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.......11500 ft agl.
* Transport winds.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (30-84) increasing to excellent
(702-864) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....51-56.
* Max humidity........55-68 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...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 (169-297) decreasing to poor
(25-36) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Areas of smoke in the morning.
Hazy. Patchy smoke in the afternoon.
* Max temperature.....86-93...except 73-83 ridges.
* Min humidity........21-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-36) increasing to fair to good
(346-552) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Hazy. Lows 50 to 57. Highs 74 to 88.
West winds 1 to 5 mph.
.SUNDAY...Partly cloudy. Lows 46 to 53. Highs 72 to 86. West
winds 2 to 7 mph.
.LABOR DAY...Mostly clear. Lows 47 to 53. Highs 74 to 88. West
winds 1 to 6 mph.
.TUESDAY...Mostly clear. Lows 50 to 56. Highs 78 to 91. East
winds 1 to 5 mph.
.WEDNESDAY...Mostly clear. Lows 53 to 59. Highs 79 to 92. North
winds 1 to 6 mph.
$$
ORZ705-282330-
Southern Deschutes National Forest-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Patchy smoke in the morning.
Hazy. Areas of smoke in the afternoon.
* Max temperature.....81-86...except 71-79 ridges.
* Min humidity........15-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....South winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......11500 ft agl.
* Transport winds.....South around 5 mph increasing to southwest
around 15 mph in the afternoon.
* Ventilation Index...Poor (43-89) increasing to excellent
(916-1050) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy and areas of smoke.
* Min temperature.....44-53.
* Max humidity........67-82 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....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 (160-338) decreasing to poor
(25-36) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy and areas of smoke.
* Max temperature.....83-88...except 73-81 ridges.
* Min humidity........15-25 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.......12500 ft agl.
* Transport winds.....South 5 to 10 mph.
* Ventilation Index...Poor (25-33) increasing to good to excellent
(656-842) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Partly cloudy. Lows 44 to 52. Highs 76 to 86. Terrain
driven winds less than 5 mph.
.SUNDAY...Partly cloudy. Lows 42 to 50. Highs 75 to 85. West
winds up to 5 mph.
.LABOR DAY...Mostly clear. Lows 42 to 50. Highs 77 to 86. West
winds up to 5 mph.
.TUESDAY...Mostly clear. Lows 45 to 53. Highs 78 to 88. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 47 to 55. Highs 80 to 89.
Terrain driven winds less than 5 mph.
$$
ORZ697-282330-
Central Blue Mountains-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny then becoming partly cloudy.
Hazy.
* Max temperature.....78-83...except 71-79 ridges.
* Min humidity........20-29 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.....Southwest 5 to 10 mph.
* Ventilation Index...Poor (41-75) increasing to good to excellent
(682-968) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....48-55.
* Max humidity........59-74 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.....East around 5 mph.
* Ventilation Index...Poor (36-142) decreasing to poor (25-48)
after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....80-85...except 73-81 ridges.
* Min humidity........17-27 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.....Southeast around 5 mph shifting to the
southwest in the afternoon.
* Ventilation Index...Poor (25-42) increasing to fair to good
(344-556) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 49 to 57. Highs 78 to 86. East
winds 1 to 5 mph.
.SUNDAY...Partly cloudy. Lows 50 to 57. Highs 79 to 86. Southeast
winds 1 to 5 mph.
.LABOR DAY...Partly cloudy. Lows 49 to 56. Highs 78 to 86.
Terrain driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 50 to 58. Highs 80 to 88. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 51 to 58. Highs 80 to 87. Terrain
driven winds less than 5 mph.
$$
ORZ698-282330-
Southern Blue Mountains-
634 AM PDT Thu Aug 28 2025
.TODAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....79-85.
* Min humidity........15-21 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 3
to 6 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 (25-54) increasing to excellent
(727-969) in the afternoon.
.TONIGHT...
* Sky/weather.........Mostly clear. Hazy.
* Min temperature.....48-54.
* Max humidity........61-76 percent...except 55-65 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.....Northwest around 10 mph shifting to the
northeast after midnight.
* Ventilation Index...Poor to fair (59-267) decreasing to poor
(25-55) after midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny. Hazy.
* Max temperature.....80-85...except 75-81 ridges.
* Min humidity........14-19 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......13000 ft agl.
* Transport winds.....East around 5 mph shifting to the south in
the afternoon.
* Ventilation Index...Poor (25-41) increasing to fair to good
(312-538) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 49 to 55. Highs 82 to 88. East
winds 1 to 6 mph.
.SUNDAY...Partly cloudy. Lows 49 to 55. Highs 83 to 89. East
winds 1 to 6 mph.
.LABOR DAY...Partly cloudy. Lows 49 to 55. Highs 82 to 88.
Northeast winds 1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 50 to 57. Highs 83 to 90. East
winds 1 to 5 mph.
.WEDNESDAY...Partly cloudy. Lows 53 to 58. Highs 84 to 90.
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 above normal
precipitation.
$$