Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
901
FNUS56 KPDT 162120
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
220 PM PDT Wed Sep 16 2026
.DISCUSSION...A weather system over southwest Oregon/Northern
California will allow for a slight chance of isolated afternoon
thunderstorms across Central Oregon today. Better chances will
develop on Thursday and extend from Central Oregon through the
Blue Mountains for much of the day, with slight chances even
during the early morning hours. The storm threat focuses on
Eastern Oregon Friday ahead of a warming and drying trend through
early next week.
***Thunderstorms imply strong gusty winds ***
***Winds are 20 foot 10 minute averages ***
***CWR: Chance of wetting rain 0.10 or greater ***
***Ventilation Index is derived from transport wind
multiplied by the mixing height in 100`s of ft.
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.
Categories: low (< 200), moderate (200-500),
high (500-700), and very high (> 700).
-Note: Max transport winds may not occur
at the same time as max mixing height. ***
WAZ695-171130-
East Washington South Central Cascade Mountains-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....43-49.
* Max humidity........57-72 percent.
* Humidity recovery...Moderate...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast winds up to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Low (63-97) decreasing to low (25-34) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-80...except 64-71 ridges.
* Min humidity........28-38 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.......4500 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Low (25-40) increasing to low (38-118) in the
afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....43-50.
* Max humidity........61-76 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming west
1 to 6 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low (48-68) decreasing to low (25-42) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....69-76...except 61-68 ridges.
* Min humidity........33-44 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (25-45) increasing to low to moderate
(124-228) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 43 to 50. Highs 64 to 76. West
winds up to 5 mph.
.SUNDAY...Mostly clear. Lows 46 to 51. Highs 66 to 78. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 45 to 51. Highs 62 to 73. West winds
up to 5 mph.
.TUESDAY...Partly cloudy. Lows 42 to 49. Highs 58 to 68. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 42 to 48. Highs 56 to 67.
Terrain driven winds less than 5 mph.
$$
WAZ690-171130-
Kittitas Valley-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-55.
* 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.......500 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (86-152) decreasing to low (31-43) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-78...except 65-72 ridges.
* Min humidity........32-40 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4000 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low (35-65) increasing to low to moderate
(101-227) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....50-55.
* Max humidity........59-74 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
northwest up to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (34-60) decreasing to low (28-42) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-77...except 63-71 ridges.
* Min humidity........36-43 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 6 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (25-45) increasing to low (58-158) in the
afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 50 to 55. Highs 71 to 77. West
winds up to 5 mph.
.SUNDAY...Mostly clear. Lows 51 to 56. Highs 72 to 79. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 52 to 57. Highs 72 to 79. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 49 to 54. Highs 66 to 73.
Northwest winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 48 to 53. Highs 65 to 71.
Terrain driven winds less than 5 mph.
$$
WAZ694-171130-
Yakama Alpine District-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....45-51.
* Max humidity........58-71 percent.
* Humidity recovery...Moderate...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 mph.
* Ridges/upr slopes....North winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Low (117-159) decreasing to low (33-47) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....74-80...except 65-75 ridges.
* Min humidity........30-37 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.......5000 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low (40-70) increasing to low (68-184) in the
afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....45-52.
* Max humidity........68-83 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming west
1 to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming west 1
to 6 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (49-95) decreasing to low (26-38) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-78...except 64-73 ridges.
* Min humidity........31-42 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....West winds 1 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (25-35) increasing to low to moderate
(102-206) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 45 to 52. Highs 68 to 79. West
winds 1 to 6 mph.
.SUNDAY...Mostly clear. Lows 46 to 54. Highs 70 to 82. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 46 to 54. Highs 68 to 80. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 44 to 51. Highs 63 to 74. West
winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 43 to 50. Highs 61 to 72.
Terrain driven winds less than 5 mph.
$$
ORZ691-WAZ691-171130-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-54.
* Max humidity........65-80 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 3 to 8 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....North winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (116-188) decreasing to low (25-42) after
midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the afternoon.
* Max temperature.....71-79...except 69-74 ridges.
* Min humidity........33-47 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....10 percent (very low chance).
* Mixing height.......4500 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Low (25-58) increasing to low to moderate
(107-263) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers in the
evening.
* Min temperature.....51-56.
* Max humidity........71-86 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 2 to 7 mph.
* Ridges/upr slopes....Southwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....Southwest around 10 mph.
* Ventilation Index...Low (41-85) decreasing to low (27-43) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....74-80...except 70-75 ridges.
* Min humidity........31-41 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 2 to 7 mph.
* Ridges/upr slopes....Southwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....Southwest around 10 mph.
* Ventilation Index...Low (25-65) increasing to low to moderate
(147-331) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 50 to 55. Highs 76 to 81.
Southwest winds 1 to 6 mph.
.SUNDAY...Mostly clear. Lows 51 to 56. Highs 78 to 83. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 52 to 57. Highs 77 to 82. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 51 to 56. Highs 72 to 78. West
winds 2 to 7 mph.
.WEDNESDAY...Mostly clear. Lows 49 to 54. Highs 71 to 77.
Southwest winds 1 to 5 mph.
$$
ORZ692-WAZ692-171130-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-52.
* 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.......500 ft agl.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Low (56-100) decreasing to low (26-34) after
midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy. A chance of showers and a
slight chance of thunderstorms in the afternoon.
* Max temperature.....63-72...except 60-66 ridges.
* Min humidity........48-63 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.......4000 ft agl.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Low (26-40) increasing to low (82-158) in the
afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of
thunderstorms in the evening. A chance of showers.
* Min temperature.....45-53.
* Max humidity........80-95 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....20 percent (slight chance).
* Mixing height.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (31-47) decreasing to low (25-32) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers in the afternoon.
* Max temperature.....66-74...except 60-65 ridges.
* Min humidity........42-53 percent...except 51-64 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......5500 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25-39) increasing to low to moderate
(132-260) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 44 to 53. Highs 67 to 77. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 46 to 53. Highs 71 to 80. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 47 to 55. Highs 70 to 79. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 46 to 54. Highs 66 to 75. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 44 to 52. Highs 66 to 75. Terrain
driven winds less than 5 mph.
$$
ORZ693-WAZ693-171130-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....43-52.
* Max humidity........67-82 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....North 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.......500 ft agl.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Low (81-109) decreasing to low (25-26) after
midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the morning, then a chance of showers and a slight chance of
thunderstorms in the afternoon.
* Max temperature.....68-77...except 63-70 ridges.
* Min humidity........41-52 percent.
* 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.......6000 ft agl.
* Transport winds.....East 5 to 10 mph.
* Ventilation Index...Low (25-30) increasing to low to moderate
(116-324) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a slight
chance of thunderstorms in the evening, then a chance of showers
after midnight.
* Min temperature.....44-53.
* 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.................20 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (25-55).
.FRIDAY...
* Sky/weather.........Mostly cloudy. A chance of showers. A slight
chance of thunderstorms in the afternoon.
* Max temperature.....65-75...except 59-66 ridges.
* Min humidity........44-53 percent...except 49-64 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......5500 ft agl.
* Transport winds.....Southwest around 5 mph shifting to the north
in the afternoon.
* Ventilation Index...Low (25) increasing to low (37-179) in the
afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Mostly clear. Lows 43 to
53. Highs 69 to 79. Terrain driven winds less than 5 mph.
.SUNDAY...Clear. Lows 44 to 53. Highs 73 to 82. Terrain driven
winds less than 5 mph.
.MONDAY...Mostly clear. Lows 45 to 54. Highs 73 to 82. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 44 to 53. Highs 70 to 79. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 43 to 52. Highs 69 to 78. Terrain
driven winds less than 5 mph.
$$
ORZ701-171130-
Eastern Columbia River Gorge of Oregon-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....49-54.
* Max humidity........64-77 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...East winds 1 to 6 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....East winds up to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northeast 5 to 10 mph.
* Ventilation Index...Low (131-179) decreasing to low (25-30) after
midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....76-82.
* Min humidity........33-39 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....0 percent.
* Mixing height.......4000 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Low (25-31) increasing to low (40-152) in the
afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Min temperature.....50-55.
* Max humidity........78-93 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming west
2 to 7 mph after midnight. In the eastern Columbia River
Gorge, west winds 3 to 8 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming west 3
to 8 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (72-116) decreasing to low (32-50) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-80.
* Min humidity........31-45 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph...except west 3 to 8
mph in the eastern Columbia River Gorge.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (26-66) increasing to moderate (224-334)
in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 47 to 52. Highs 78 to 83. West
winds 2 to 7 mph.
.SUNDAY...Mostly clear. Lows 49 to 55. Highs 80 to 85. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 51 to 56. Highs 77 to 82. West winds
up to 5 mph.
.TUESDAY...Mostly clear. Lows 48 to 53. Highs 73 to 78. Northwest
winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 47 to 52. Highs 72 to 77.
Northwest winds up to 5 mph.
$$
ORZ702-171130-
East Slopes of the Mt. Hood National Forest-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....46-53.
* Max humidity........58-73 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.......500 ft agl.
* Transport winds.....East 10 to 15 mph.
* Ventilation Index...Low (135-179) decreasing to low (33-53) after
midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy.
* Max temperature.....72-78...except 67-76 ridges.
* Min humidity........33-40 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4000 ft agl.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Low (36-58) increasing to low (105-167) in
the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Min temperature.....45-52.
* Max humidity........79-94 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 becoming west 1
to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (76-124) decreasing to low (39-51) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....71-79...except 64-73 ridges.
* Min humidity........31-44 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.......5500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (29-45) increasing to low to moderate
(194-276) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 44 to 51. Highs 69 to 80. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 48 to 54. Highs 71 to 82. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 47 to 54. Highs 67 to 80. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 44 to 51. Highs 63 to 75. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 43 to 50. Highs 62 to 73.
Terrain driven winds less than 5 mph.
$$
ORZ695-171130-
Eagle Cap Wilderness-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....46-52...except 41-48 ridges.
* Max humidity........66-79 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northeast winds 3 to 8 mph.
* Ridges/upr slopes....Northeast winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Low (92-144) decreasing to low (26-42) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms.
* Max temperature.....65-76...except 56-66 ridges.
* Min humidity........49-64 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....East winds 1 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......6000 ft agl.
* Transport winds.....East around 10 mph.
* Ventilation Index...Low (31-67) increasing to moderate to high
(285-593) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of
thunderstorms in the evening. A chance of showers.
* Min temperature.....46-51...except 40-46 ridges.
* Max humidity........84-96 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.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (30-70) decreasing to low (25-26) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy. A chance of showers in the
morning, then showers likely and a slight chance of thunderstorms
in the afternoon.
* Max temperature.....62-72...except 51-61 ridges.
* Min humidity........50-65 percent.
* 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.......5000 ft agl.
* Transport winds.....East 5 to 10 mph.
* Ventilation Index...Low (25-26) increasing to low to moderate
(90-244) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...A slight chance of showers. Mostly clear. Lows 40 to
49. Highs 60 to 74. Terrain driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 42 to 50. Highs 62 to 77. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 44 to 52. Highs 62 to 77. West winds
1 to 5 mph.
.TUESDAY...Mostly clear. Lows 43 to 51. Highs 60 to 75. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 42 to 49. Highs 60 to 74.
Southwest winds 1 to 6 mph.
$$
ORZ694-171130-
Grande Ronde Valley of Oregon-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....43-48.
* Max humidity........80-89 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 8 mph.
* Ridges/upr slopes....Northwest winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (113-141) decreasing to low (27-43) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms.
* Max temperature.....70-75.
* Min humidity........53-58 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......5500 ft agl.
* Transport winds.....North around 5 mph shifting to the southeast
in the afternoon.
* Ventilation Index...Low (32-48) increasing to low to moderate
(107-313) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of
thunderstorms in the evening. A chance of showers.
* Min temperature.....43-48.
* Max humidity........91-100 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....20 percent (slight chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Low (34-58) decreasing to low (25-27) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy. A slight chance of showers. A
slight chance of thunderstorms in the afternoon.
* Max temperature.....70-75.
* Min humidity........44-49 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....20 percent (slight chance).
* Mixing height.......5500 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Low (25) increasing to low to moderate
(138-222) in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 42 to 47. Highs 74 to 79. North
winds up to 5 mph.
.SUNDAY...Mostly clear. Lows 44 to 49. Highs 77 to 82. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 45 to 50. Highs 77 to 82. West winds
up to 5 mph.
.TUESDAY...Mostly clear. Lows 44 to 49. Highs 75 to 80. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 42 to 47. Highs 74 to 79. South
winds 1 to 5 mph.
$$
ORZ699-171130-
Western Forested Blue Mountains-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers
after midnight.
* Min temperature.....42-47.
* Max humidity........76-87 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....North winds 1 to 5 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.....North around 10 mph.
* Ventilation Index...Low (100-148) decreasing to low (25-42) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms.
* Max temperature.....62-70...except 58-65 ridges.
* Min humidity........51-66 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......6500 ft agl.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Low (38-66) increasing to low to moderate
(185-447) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of
thunderstorms in the evening. A chance of showers.
* Min temperature.....43-49.
* Max humidity........87-100 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.................40 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Low (36-66) decreasing to low (25-32) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers and a slight chance of thunderstorms in the
afternoon.
* Max temperature.....65-71...except 58-65 ridges.
* Min humidity........40-52 percent.
* 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.......5500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (25-34) increasing to moderate (219-287)
in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 42 to 48. Highs 67 to 75. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 44 to 50. Highs 71 to 79. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 46 to 51. Highs 70 to 78. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 44 to 50. Highs 66 to 75. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 43 to 48. Highs 66 to 74. Terrain
driven winds less than 5 mph.
$$
ORZ696-171130-
John Day Valley-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....43-49.
* Max humidity........75-86 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....North winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......Near surface.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (130-164) decreasing to low (25-38) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers. A slight
chance of thunderstorms in the afternoon.
* Max temperature.....62-70...except 57-62 ridges.
* Min humidity........50-60 percent.
* 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.......5500 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (32-58) increasing to moderate (202-306)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a slight
chance of thunderstorms in the evening, then a slight chance of
showers after midnight.
* Min temperature.....45-51.
* Max humidity........81-94 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....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (53-85) decreasing to low (25-27) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers in the afternoon.
* Max temperature.....67-75...except 62-67 ridges.
* Min humidity........34-41 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....10 percent (very low chance).
* Mixing height.......6000 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (25) increasing to moderate (205-295) in
the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 45 to 50. Highs 72 to 80. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 47 to 52. Highs 76 to 84. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 48 to 53. Highs 74 to 83. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 47 to 52. Highs 71 to 80. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 44 to 50. Highs 70 to 79. Terrain
driven winds less than 5 mph.
$$
ORZ700-171130-
Central Mountains of Oregon-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers
after midnight.
* Min temperature.....38-47.
* Max humidity........80-95 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 3 to 8 mph.
* Ridges/upr slopes....North winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....North 10 to 15 mph.
* Ventilation Index...Low to moderate (151-251) decreasing to low
(26-52) after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms.
* Max temperature.....60-68...except 54-59 ridges.
* Min humidity........49-61 percent...except 62-75 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......4500 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (32-74) increasing to moderate (215-307)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening.
* Min temperature.....39-48.
* Max humidity........86-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest up to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (37-159) decreasing to low (25-33) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming mostly sunny.
* Max temperature.....68-76...except 61-66 ridges.
* Min humidity........31-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (25-29) increasing to moderate (223-363)
in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 38 to 47. Highs 72 to 79.
Southwest winds 1 to 6 mph.
.SUNDAY...Mostly clear. Lows 41 to 50. Highs 75 to 82. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 42 to 51. Highs 75 to 81. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 41 to 49. Highs 72 to 77. West
winds up to 5 mph.
.WEDNESDAY...Mostly clear. Lows 39 to 47. Highs 71 to 76.
Southwest winds up to 5 mph.
$$
ORZ703-171130-
Warm Springs Reservation-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....48-53.
* Max humidity........65-74 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 3 to 8 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northeast 10 to 15 mph.
* Ventilation Index...Low to moderate (182-206) decreasing to low
(26-48) after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy then becoming mostly cloudy. A
slight chance of showers in the afternoon.
* Max temperature.....70-75...except 61-70 ridges.
* Min humidity........38-45 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....Northeast winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......4000 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low (31-57) increasing to low to moderate
(170-242) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy.
* Min temperature.....47-52.
* Max humidity........81-89 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
southwest 1 to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (54-122) decreasing to low (26-46) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming sunny.
* Max temperature.....73-81...except 62-70 ridges.
* Min humidity........28-34 percent...except 34-47 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 1 to 5 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....West winds 2 to 7 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (25-44) increasing to moderate (211-331)
in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 46 to 51. Highs 74 to 82. West
winds 1 to 6 mph.
.SUNDAY...Mostly clear. Lows 49 to 54. Highs 76 to 85. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 49 to 54. Highs 73 to 84. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 47 to 52. Highs 69 to 79. West
winds 1 to 6 mph.
.WEDNESDAY...Partly cloudy. Lows 45 to 50. Highs 67 to 77. West
winds up to 5 mph.
$$
ORZ704-171130-
Northern Deschutes National Forest-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....40-47.
* Max humidity........71-86 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast winds 4 to 9 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....North 10 to 15 mph.
* Ventilation Index...Low to moderate (168-218) decreasing to low
(29-49) after midnight.
.THURSDAY...
* Sky/weather.........Partly cloudy then becoming mostly cloudy. A
chance of showers in the afternoon.
* Max temperature.....67-73...except 57-66 ridges.
* Min humidity........37-49 percent...except 46-61 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....North winds 1 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......4000 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (43-59) increasing to low to moderate
(149-217) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. A slight chance of showers in
the evening.
* Min temperature.....40-46.
* 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 becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (74-106) decreasing to low (29-39) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming sunny.
* Max temperature.....72-77...except 59-69 ridges.
* Min humidity........29-35 percent...except 34-49 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....West winds 1 to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (26-38) increasing to moderate (250-332)
in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 39 to 46. Highs 69 to 81. West
winds up to 5 mph.
.SUNDAY...Mostly clear. Lows 43 to 50. Highs 72 to 84. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 44 to 50. Highs 69 to 81. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 41 to 48. Highs 65 to 77. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 39 to 46. Highs 64 to 74.
Terrain driven winds less than 5 mph.
$$
ORZ705-171130-
Southern Deschutes National Forest-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers.
* Min temperature.....34-42.
* Max humidity........84-99 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 mph.
* Ridges/upr slopes....North winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....North 10 to 15 mph.
* Ventilation Index...Low to moderate (183-263) decreasing to low
(36-64) after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers. A slight
chance of thunderstorms in the afternoon.
* Max temperature.....60-65...except 53-60 ridges.
* Min humidity........54-62 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....North winds 1 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......4000 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (32-72) increasing to moderate (218-318)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers in the
evening. A slight chance of showers after midnight.
* Min temperature.....35-42.
* Max humidity........94-100 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 becoming west 2
to 6 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (63-143) decreasing to low (25-32) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming sunny.
* Max temperature.....67-72...except 58-66 ridges.
* Min humidity........32-41 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....West winds 2 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (25-38) increasing to moderate (297-387)
in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 34 to 43. Highs 70 to 78. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 37 to 46. Highs 73 to 81. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 38 to 47. Highs 71 to 80. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 36 to 45. Highs 68 to 76. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 35 to 43. Highs 66 to 75. Terrain
driven winds less than 5 mph.
$$
ORZ697-171130-
Central Blue Mountains-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers and
thunderstorms after midnight.
* Min temperature.....40-47.
* Max humidity........76-91 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northeast winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northeast around 10 mph.
* Ventilation Index...Low (135-191) decreasing to low (28-52) after
midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the morning, then showers
likely and a chance of thunderstorms in the afternoon.
* Max temperature.....60-66.
* Min humidity........50-65 percent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 5 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....Northeast winds 2 to 7 mph in the morning
becoming light less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......6000 ft agl.
* Transport winds.....Northeast around 10 mph shifting to the
southeast in the afternoon.
* Ventilation Index...Low (47-103) increasing to moderate (201-427)
in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening, then a slight
chance of showers after midnight.
* Min temperature.....39-45.
* Max humidity........91-100 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....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (57-105) decreasing to low (25-33) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers and a slight chance of thunderstorms in the
afternoon.
* Max temperature.....63-68...except 58-64 ridges.
* Min humidity........38-50 percent.
* 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.......6500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (25-39) increasing to moderate (248-408)
in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 39 to 45. Highs 67 to 73. Terrain
driven winds less than 5 mph.
.SUNDAY...Mostly clear. Lows 42 to 47. Highs 70 to 77. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 43 to 49. Highs 70 to 77. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 42 to 48. Highs 68 to 75. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 41 to 47. Highs 67 to 73. Terrain
driven winds less than 5 mph.
$$
ORZ698-171130-
Southern Blue Mountains-
220 PM PDT Wed Sep 16 2026
.TONIGHT...
* Sky/weather.........Partly cloudy. A chance of showers after
midnight.
* Min temperature.....41-48.
* Max humidity........74-89 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 3 to 8 mph.
* Ridges/upr slopes....North winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northeast around 15 mph.
* Ventilation Index...Low to moderate (190-270) decreasing to low
(47-63) after midnight.
.THURSDAY...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms.
* Max temperature.....61-69.
* Min humidity........46-61 percent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 5 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....North winds 2 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......6000 ft agl.
* Transport winds.....Northeast around 10 mph shifting to the
southwest in the afternoon.
* Ventilation Index...Low (60-92) increasing to low to moderate
(199-387) in the afternoon.
.THURSDAY NIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening, then a slight
chance of showers after midnight.
* Min temperature.....39-45.
* Max humidity........89-100 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....20 percent (slight chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low (95-159) decreasing to low (32-42) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers in the morning. A chance of showers and
a slight chance of thunderstorms in the afternoon.
* Max temperature.....64-70.
* Min humidity........36-44 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......7000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (31-43) increasing to moderate (326-486)
in the afternoon.
.Forecast days 3 through 7......
.SATURDAY...Mostly clear. Lows 39 to 45. Highs 70 to 75.
Northwest winds 1 to 6 mph.
.SUNDAY...Mostly clear. Lows 41 to 48. Highs 73 to 78. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 42 to 49. Highs 74 to 79. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 42 to 49. Highs 72 to 77. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 40 to 47. Highs 70 to 76. South
winds up to 5 mph.
$$
.8-14 DAY OUTLOOK for Thursday September 24 through Wednesday September 30...
A greater chance of near to above normal temperatures and above
normal precipitation.
$$