520
FNUS56 KPDT 242028
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
128 PM PDT THU SEP 24 2026
DISCUSSION
TODAY WILL REMAIN DRY WITH DIURNALLY DRIVEN WINDS
THROUGH THE EVENING BEFORE SEEING A SLIGHT UPTICK IN THE OVERNIGHT
HOURS. RELATIVE HUMIDITY WILL BE MAINLY ABOVE 30% WITH SOME
ISOLATED TEENS TO 20% ALONG OCHOCO-JOHN DAY HIGHLANDS. NO CRITICAL
FIRE WEATHER EXPECTED. WINDS ADVISORY IN EFFECT FOR THE LOWER
COLUMBIA RIVER GORGE, LOWER COLUMBIA BASIN OF OR, FOOTHILLS OF
THE NORTHERN BLUES, N CENTRAL OR, YAKIMA VALLEY AND THE SIMCOE
HIGHLANDS FROM 0800 TO 2300 FRIDAY. WINDS WILL BE 20-30 MPH WITH
GUSTS BETWEEN 45 TO 55 MPH.
***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. ***
WAZ695-251115-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE.....45-50...EXCEPT 39-46 RIDGES.
* MAX HUMIDITY........84-99 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 1 TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 1 TO 6 MPH.
* CWR.................50 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
* VENTILATION INDEX...LOW (25-127).
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.....51-59...EXCEPT 45-51 RIDGES.
* MIN HUMIDITY........68-83 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 6 TO 12 MPH.
* CWR.................60 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH INCREASING TO AROUND
25 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW TO MODERATE (131-313) INCREASING TO
MODERATE TO VERY HIGH (414-716) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A SLIGHT CHANCE OF HEAVY SNOW
SHOWERS IN THE EVENING. A CHANCE OF SHOWERS.
* MIN TEMPERATURE.....32-38.
* MAX HUMIDITY........80-95 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.
* CWR.................20 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 25 MPH DECREASING TO AROUND 15
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE TO HIGH (386-532) DECREASING TO LOW
(67-149) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....53-59...EXCEPT 45-51 RIDGES.
* MIN HUMIDITY........38-50 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST 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.......5500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (44-84) INCREASING TO LOW TO MODERATE
(172-252) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 33 TO 39. HIGHS 50 TO 61. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 34 TO 40. HIGHS 49 TO 61. WEST
WINDS 1 TO 5 MPH.
TUESDAY
A CHANCE OF SHOWERS. MOSTLY CLOUDY. LOWS 37 TO 42.
HIGHS 49 TO 61. WEST WINDS 1 TO 6 MPH.
WEDNESDAY
A CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 38 TO 44.
HIGHS 51 TO 62. WEST WINDS 2 TO 7 MPH.
THURSDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 37 TO
43. HIGHS 49 TO 61. WEST WINDS UP TO 5 MPH.
WAZ690-251115-
KITTITAS VALLEY-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY AFTER MIDNIGHT.
* MIN TEMPERATURE.....50-55.
* 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 BECOMING WEST 1
TO 6 MPH AFTER MIDNIGHT.
* CWR.................10 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (25-43).
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS.
* MAX TEMPERATURE.....59-66...EXCEPT 51-60 RIDGES.
* MIN HUMIDITY........55-70 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 10 TO 16 MPH WITH GUSTS UP
TO 30 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 10 TO 16 MPH.
* CWR.................10 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH INCREASING TO AROUND
25 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW TO MODERATE (132-248) INCREASING TO VERY
HIGH (717-1041) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....38-43.
* MAX HUMIDITY........73-88 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH. GUSTS TO 25 MPH IN
THE EVENING.
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...MODERATE (252-386) DECREASING TO LOW (40-80)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....57-63...EXCEPT 49-57 RIDGES.
* MIN HUMIDITY........36-45 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 1 TO 6 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.......5500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (26-52) INCREASING TO LOW TO MODERATE
(164-254) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 58 TO 65. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 60 TO 68. WEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 60 TO 67. WEST
WINDS UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 61 TO 68.
NORTHWEST WINDS UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 60 TO 67. WEST
WINDS UP TO 5 MPH.
WAZ694-251115-
YAKAMA ALPINE DISTRICT-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE.....41-49.
* MAX HUMIDITY........88-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 1 TO 6 MPH INCREASING TO 6
TO 12 MPH AFTER MIDNIGHT.
* CWR.................60 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (49-96).
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY IN THE MORNING,
THEN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....53-60...EXCEPT 45-53 RIDGES.
* MIN HUMIDITY........70-85 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 9 TO 15 MPH WITH GUSTS UP TO
40 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 9 TO 15 MPH.
* CWR.................60 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH INCREASING TO AROUND
30 MPH IN THE AFTERNOON.
* VENTILATION INDEX...MODERATE (206-352) INCREASING TO HIGH TO VERY
HIGH (624-964) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. A
CHANCE OF SHOWERS IN THE EVENING.
* MIN TEMPERATURE.....32-39.
* MAX HUMIDITY........83-98 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 7 TO 13 MPH WITH GUSTS UP TO 40
MPH.
* RIDGES/UPR SLOPES....WEST WINDS 7 TO 13 MPH.
* CWR.................10 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 20 MPH DECREASING TO AROUND 10
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE (235-423) DECREASING TO LOW (33-77)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....55-62...EXCEPT 47-56 RIDGES.
* MIN HUMIDITY........39-47 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 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.......5000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH SHIFTING TO THE EAST
IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-38) INCREASING TO LOW (141-195) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 34 TO 41. HIGHS 53 TO 64. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 34 TO 41. HIGHS 54 TO 65. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
37 TO 44. HIGHS 53 TO 65. WEST WINDS 2 TO 7 MPH.
WEDNESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
38 TO 45. HIGHS 56 TO 67. WEST WINDS 2 TO 7 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 38 TO 45. HIGHS 54 TO 66. WEST
WINDS 1 TO 5 MPH.
ORZ691-WAZ691-251115-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
* MIN TEMPERATURE.....51-56.
* MAX HUMIDITY........72-87 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
SOUTHWEST 4 TO 9 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING WEST 6
TO 12 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (25-41) INCREASING TO LOW (25-53) AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
PATCHY BLOWING DUST. A CHANCE OF SHOWERS IN THE MORNING. A SLIGHT
CHANCE OF SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....62-72...EXCEPT 57-67 RIDGES.
* MIN HUMIDITY........43-58 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...BREEZY. SOUTHWEST WINDS 11 TO 17 MPH
INCREASING TO 16 TO 26 MPH IN THE AFTERNOON. GUSTS TO 40 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 11 TO 17 MPH INCREASING TO
16 TO 25 MPH IN THE AFTERNOON.
* CWR.................30 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH INCREASING TO AROUND
35 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW TO MODERATE (132-340) INCREASING TO VERY
HIGH (1012-1050) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY BLOWING DUST IN THE
EVENING.
* MIN TEMPERATURE.....40-45.
* MAX HUMIDITY........77-92 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 12 TO 18 MPH WITH GUSTS UP
TO 40 MPH DECREASING TO 5 TO 11 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 9 TO 15 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 20 MPH BECOMING SOUTHWEST AROUND
10 MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE TO HIGH (326-574) DECREASING TO LOW
(35-89) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....61-67...EXCEPT 55-63 RIDGES.
* MIN HUMIDITY........30-39 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 2 TO 7 MPH IN THE MORNING
BECOMING UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 2 TO 7 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (25-57) INCREASING TO LOW TO MODERATE
(95-239) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 40 TO 45. HIGHS 62 TO 69. NORTH
WINDS UP TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 64 TO 70. SOUTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 66 TO 72.
SOUTHWEST WINDS 2 TO 7 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 67 TO 72. WEST
WINDS 2 TO 7 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 65 TO 72. WEST
WINDS 2 TO 7 MPH.
ORZ692-WAZ692-251115-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....46-53...EXCEPT 43-48 RIDGES.
* MAX HUMIDITY........82-97 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
SOUTHWEST 2 TO 7 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* VENTILATION INDEX...LOW (25-76) DECREASING TO LOW (26-36) AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS IN THE MORNING, THEN A
CHANCE OF SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....58-67...EXCEPT 52-57 RIDGES.
* MIN HUMIDITY........48-63 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH INCREASING TO
SOUTHWEST 9 TO 15 MPH WITH GUSTS UP TO 30 MPH IN THE
AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH INCREASING TO 8 TO 14
MPH IN THE AFTERNOON.
* CWR.................20 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO SOUTHWEST
AROUND 25 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (77-137) INCREASING TO VERY HIGH
(957-1050) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....35-42.
* MAX HUMIDITY........76-91 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 10 TO 16 MPH BECOMING SOUTHWEST 4
TO 10 MPH AFTER MIDNIGHT. GUSTS TO 30 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 9 TO 15 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 25 MPH DECREASING TO AROUND 15
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...HIGH (513-689) DECREASING TO LOW (65-151)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....56-64...EXCEPT 50-56 RIDGES.
* MIN HUMIDITY........27-42 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS UP TO 5 MPH IN THE MORNING
BECOMING UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 1 TO 6 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (44-96) INCREASING TO LOW TO MODERATE
(179-255) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 35 TO 42. HIGHS 54 TO 64. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 34 TO 42. HIGHS 54 TO 64. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 36 TO 44. HIGHS 57 TO 67.
SOUTHWEST WINDS UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 39 TO 46. HIGHS 59 TO 68.
SOUTHWEST WINDS 1 TO 6 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 39 TO 46. HIGHS 59 TO 68. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ693-WAZ693-251115-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....50-58.
* MAX HUMIDITY........57-72 PERCENT...EXCEPT 48-61 PERCENT RIDGES.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
* VENTILATION INDEX...LOW (89-161) DECREASING TO LOW (37-75) AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
MORNING, THEN A SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....60-70.
* MIN HUMIDITY........40-51 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 11 MPH.
* CWR.................20 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH INCREASING TO WEST
AROUND 20 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (86-150) INCREASING TO HIGH TO VERY HIGH
(627-961) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....34-43.
* MAX HUMIDITY........74-89 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 20 MPH DECREASING TO AROUND 10
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE TO HIGH (305-585) DECREASING TO LOW
(54-142) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....57-66...EXCEPT 52-59 RIDGES.
* MIN HUMIDITY........25-31 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...LOW (26-66) INCREASING TO LOW TO MODERATE
(184-262) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 34 TO 42. HIGHS 59 TO 68. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 35 TO 43. HIGHS 58 TO 67. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 35 TO 43. HIGHS 60 TO 69.
SOUTHWEST WINDS UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 38 TO 46. HIGHS 62 TO 71. WEST
WINDS 2 TO 7 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 37 TO 46. HIGHS 62 TO 72.
SOUTHWEST WINDS 1 TO 5 MPH.
ORZ701-251115-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY AFTER MIDNIGHT.
* MIN TEMPERATURE.....48-53.
* MAX HUMIDITY........83-98 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WINDS WEST WINDS 1 TO 6 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
SOUTHWEST 2 TO 7 MPH AFTER MIDNIGHT.
* CWR.................30 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (43-57) DECREASING TO LOW (26-40) AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS. PATCHY
BLOWING DUST IN THE AFTERNOON.
* MAX TEMPERATURE.....59-64.
* MIN HUMIDITY........66-81 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WINDS SOUTHWEST WINDS 10 TO 16 MPH WITH
GUSTS UP TO 35 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 10 TO 16 MPH.
* CWR.................20 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH INCREASING TO WEST
AROUND 30 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW TO MODERATE (133-349) INCREASING TO VERY
HIGH (882-1050) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. A
SLIGHT CHANCE OF SHOWERS IN THE EVENING.
* MIN TEMPERATURE.....37-43.
* MAX HUMIDITY........86-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 11 MPH. IN THE EASTERN
COLUMBIA RIVER GORGE, GUSTS TO 30 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 10 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE (232-314) DECREASING TO LOW (32-52)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....61-66.
* MIN HUMIDITY........35-48 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH. IN THE EASTERN
COLUMBIA RIVER GORGE, WEST WINDS 2 TO 6 MPH IN THE MORNING
BECOMING UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 1 TO 5 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH SHIFTING TO THE NORTH IN
THE AFTERNOON.
* VENTILATION INDEX...LOW (25-35) INCREASING TO LOW (79-147) IN THE
AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 40 TO 45. HIGHS 64 TO 69. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 65 TO 70. WEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
41 TO 46. HIGHS 65 TO 70. WEST WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
42 TO 48. HIGHS 67 TO 72. WEST WINDS 1 TO 6 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 65 TO 70. WEST
WINDS 1 TO 6 MPH.
ORZ702-251115-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY AFTER MIDNIGHT.
* MIN TEMPERATURE.....40-50.
* MAX HUMIDITY........82-97 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
SOUTHWEST 1 TO 6 MPH AFTER MIDNIGHT.
* CWR.................60 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (63-123) DECREASING TO LOW (42-112) AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....52-61...EXCEPT 47-56 RIDGES.
* MIN HUMIDITY........71-86 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 7 TO 13 MPH WITH GUSTS UP TO
30 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 6 TO 12 MPH.
* CWR.................50 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 25 TO 30 MPH.
* VENTILATION INDEX...MODERATE (305-457) INCREASING TO VERY HIGH
(717-973) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING.
* MIN TEMPERATURE.....32-39.
* MAX HUMIDITY........83-98 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................20 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 20 MPH DECREASING TO AROUND 10
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE (288-356) DECREASING TO LOW (40-66)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....57-63...EXCEPT 51-58 RIDGES.
* MIN HUMIDITY........37-50 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH SHIFTING TO THE EAST IN THE
AFTERNOON.
* VENTILATION INDEX...LOW (25-33) INCREASING TO LOW (123-165) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 35 TO 41. HIGHS 54 TO 65. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 34 TO 40. HIGHS 54 TO 67. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
37 TO 43. HIGHS 55 TO 69. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
39 TO 45. HIGHS 58 TO 69. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 39 TO 45. HIGHS 55 TO 67. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ695-251115-
EAGLE CAP WILDERNESS-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....45-55.
* MAX HUMIDITY........58-73 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 7 TO 13 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
* VENTILATION INDEX...LOW (86-186) DECREASING TO LOW (47-117) AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF SHOWERS IN THE MORNING. A SLIGHT CHANCE OF SHOWERS IN
THE AFTERNOON.
* MAX TEMPERATURE.....58-72...EXCEPT 52-61 RIDGES.
* MIN HUMIDITY........39-54 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 7 TO 13 MPH.
* CWR.................10 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH.
* VENTILATION INDEX...LOW TO MODERATE (99-255) INCREASING TO VERY
HIGH (846-1024) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....34-41...EXCEPT 28-34 RIDGES.
* MAX HUMIDITY........72-87 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT EXCELLENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (197-441) DECREASING TO LOW
(29-65) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....54-64...EXCEPT 45-54 RIDGES.
* MIN HUMIDITY........23-35 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.......5000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-40) INCREASING TO LOW TO MODERATE
(174-272) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 32 TO 40. HIGHS 51 TO 65. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 31 TO 40. HIGHS 49 TO 64. NORTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 31 TO 40. HIGHS 51 TO 65. WEST
WINDS 2 TO 7 MPH.
WEDNESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
34 TO 43. HIGHS 52 TO 67. SOUTHWEST WINDS 1 TO 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 35 TO 43. HIGHS 53 TO 68. WEST
WINDS 1 TO 5 MPH.
ORZ694-251115-
GRANDE RONDE VALLEY OF OREGON-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....49-54.
* MAX HUMIDITY........70-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 5 TO 11 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
* VENTILATION INDEX...LOW (89-125) DECREASING TO LOW (35-69) AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF SHOWERS.
* MAX TEMPERATURE.....65-70.
* MIN HUMIDITY........36-46 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH. GUSTS TO 25 MPH IN
THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO AROUND 20
MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (61-103) INCREASING TO VERY HIGH
(786-984) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....33-39.
* MAX HUMIDITY........85-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 10 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE (273-389) DECREASING TO LOW (30-50)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....61-66.
* 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.......5000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-34) INCREASING TO LOW (131-185) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 34 TO 39. HIGHS 64 TO 69. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 33 TO 38. HIGHS 63 TO 68. NORTHWEST
WINDS 3 TO 8 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 33 TO 39. HIGHS 65 TO 70.
SOUTHWEST WINDS 3 TO 8 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 37 TO 43. HIGHS 67 TO 72.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 37 TO 43. HIGHS 67 TO 72. WEST
WINDS 1 TO 5 MPH.
ORZ699-251115-
WESTERN FORESTED BLUE MOUNTAINS-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....44-50.
* MAX HUMIDITY........69-84 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (76-232) DECREASING TO LOW
(28-74) AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
SHOWERS LIKELY IN THE MORNING, THEN A SLIGHT CHANCE OF SHOWERS IN
THE AFTERNOON.
* MAX TEMPERATURE.....57-64...EXCEPT 53-58 RIDGES.
* MIN HUMIDITY........36-49 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 7 TO 13 MPH WITH GUSTS UP TO
30 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 7 TO 13 MPH.
* CWR.................20 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH INCREASING TO AROUND
25 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW TO MODERATE (119-203) INCREASING TO VERY
HIGH (1041-1050) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....32-37.
* MAX HUMIDITY........78-92 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 11 MPH DECREASING TO UP TO 5
MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 20 MPH DECREASING TO AROUND 10
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE TO HIGH (390-540) DECREASING TO LOW
(47-121) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....57-63...EXCEPT 51-58 RIDGES.
* MIN HUMIDITY........22-31 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-40) INCREASING TO LOW TO MODERATE
(161-243) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 34 TO 39. HIGHS 54 TO 63. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 33 TO 38. HIGHS 54 TO 63. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 34 TO 39. HIGHS 58 TO 66. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 37 TO 42. HIGHS 59 TO 68.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 37 TO 43. HIGHS 59 TO 68. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ696-251115-
JOHN DAY VALLEY-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....48-53.
* MAX HUMIDITY........65-79 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (77-233) DECREASING TO LOW
(28-48) AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF SHOWERS IN THE MORNING.
* MAX TEMPERATURE.....59-67...EXCEPT 54-59 RIDGES.
* MIN HUMIDITY........33-42 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 9 TO 15 MPH WITH GUSTS UP TO 30
MPH.
* RIDGES/UPR SLOPES....WEST WINDS 9 TO 15 MPH.
* CWR.................20 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH INCREASING TO WEST
AROUND 25 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW TO MODERATE (170-290) INCREASING TO VERY
HIGH (1050) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....34-40.
* MAX HUMIDITY........74-89 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH DECREASING TO AROUND 5 MPH
AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE (382-476) DECREASING TO LOW (25-40)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....59-67...EXCEPT 54-59 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.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-27) INCREASING TO LOW (87-179) IN THE
AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 37 TO 42. HIGHS 58 TO 68. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 35 TO 40. HIGHS 59 TO 67. WEST
WINDS UP TO 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 36 TO 42. HIGHS 63 TO 71.
SOUTHWEST WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 39 TO 45. HIGHS 65 TO 73.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 64 TO 73. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ700-251115-
CENTRAL MOUNTAINS OF OREGON-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY AFTER MIDNIGHT.
* MIN TEMPERATURE.....41-49.
* MAX HUMIDITY........71-83 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH.
* CWR.................10 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (84-286) DECREASING TO LOW
(41-73) AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF SHOWERS IN THE MORNING.
* MAX TEMPERATURE.....56-61...EXCEPT 50-55 RIDGES.
* MIN HUMIDITY........38-53 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 12 TO 18 MPH WITH GUSTS UP
TO 35 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 11 TO 17 MPH.
* CWR.................20 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
* VENTILATION INDEX...MODERATE (327-429) INCREASING TO VERY HIGH
(1048-1050) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....27-37.
* MAX HUMIDITY........83-98 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 10 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 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.....WEST AROUND 15 MPH BECOMING NORTHWEST AROUND
5 MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE (253-417) DECREASING TO LOW (25-45)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....59-64...EXCEPT 53-58 RIDGES.
* MIN HUMIDITY........20-31 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-26) INCREASING TO LOW TO MODERATE
(105-209) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 32 TO 39. HIGHS 58 TO 64. NORTH
WINDS UP TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 30 TO 38. HIGHS 60 TO 66. NORTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 32 TO 41. HIGHS 64 TO 70.
SOUTHWEST WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 34 TO 43. HIGHS 66 TO 72.
SOUTHWEST WINDS UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 35 TO 43. HIGHS 64 TO 70. WEST
WINDS UP TO 5 MPH.
ORZ703-251115-
WARM SPRINGS RESERVATION-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE.....47-52...EXCEPT 38-45 RIDGES.
* MAX HUMIDITY........72-85 PERCENT...EXCEPT 89-100 PERCENT RIDGES.
* HUMIDITY RECOVERY...GOOD...EXCEPT EXCELLENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
SOUTHWEST 4 TO 10 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH INCREASING TO
SOUTHWEST 8 TO 14 MPH AFTER MIDNIGHT.
* CWR.................40 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (58-114) DECREASING TO LOW (30-114) AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS. PATCHY
BLOWING DUST IN THE AFTERNOON.
* MAX TEMPERATURE.....55-63...EXCEPT 46-54 RIDGES.
* MIN HUMIDITY........56-71 PERCENT...EXCEPT 74-89 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 10 TO 16 MPH WITH GUSTS UP
TO 35 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 10 TO 16 MPH.
* CWR.................20 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 25 TO 30 MPH.
* VENTILATION INDEX...MODERATE (340-498) INCREASING TO VERY HIGH
(809-1050) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. A
CHANCE OF SHOWERS IN THE EVENING.
* MIN TEMPERATURE.....34-39.
* MAX HUMIDITY........83-96 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 11 MPH DECREASING TO 1 TO 5
MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................10 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE (207-313) DECREASING TO LOW (25-53)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....58-65...EXCEPT 50-56 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....0 PERCENT.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH SHIFTING TO THE EAST IN THE
AFTERNOON.
* VENTILATION INDEX...LOW (25-27) INCREASING TO LOW (93-163) IN THE
AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 37 TO 42. HIGHS 58 TO 66. NORTH
WINDS UP TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 36 TO 41. HIGHS 59 TO 69. WEST
WINDS 1 TO 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 61 TO 72. WEST
WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 63 TO 72. WEST
WINDS 2 TO 7 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 60 TO 70. WEST
WINDS UP TO 5 MPH.
ORZ704-251115-
NORTHERN DESCHUTES NATIONAL FOREST-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE.....37-46.
* MAX HUMIDITY........83-98 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 10 MPH INCREASING TO 12
TO 18 MPH AFTER MIDNIGHT.
* CWR.................60 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (91-133) INCREASING TO LOW (58-174) AFTER
MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY.
* MAX TEMPERATURE.....52-57...EXCEPT 43-50 RIDGES.
* MIN HUMIDITY........62-72 PERCENT...EXCEPT 77-92 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 10 TO 16 MPH WITH GUSTS UP
TO 35 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 10 TO 16 MPH.
* CWR.................40 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 30 MPH.
* VENTILATION INDEX...MODERATE TO HIGH (411-543) INCREASING TO HIGH
TO VERY HIGH (692-1010) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN AND SNOW
SHOWERS IN THE EVENING.
* MIN TEMPERATURE.....28-35.
* MAX HUMIDITY........86-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................10 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH DECREASING TO AROUND 5 MPH
AFTER MIDNIGHT.
* VENTILATION INDEX...LOW TO MODERATE (185-249) DECREASING TO LOW
(25-32) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....58-63...EXCEPT 49-55 RIDGES.
* MIN HUMIDITY........32-44 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.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH SHIFTING TO THE EAST
IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-26) INCREASING TO LOW (159-189) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 32 TO 38. HIGHS 53 TO 63. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 30 TO 36. HIGHS 54 TO 65. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 33 TO 39. HIGHS 56 TO 68. WEST
WINDS UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 35 TO 41. HIGHS 60 TO 70.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 36 TO 42. HIGHS 57 TO 68. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ705-251115-
SOUTHERN DESCHUTES NATIONAL FOREST-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE.....35-41.
* MAX HUMIDITY........86-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 2 TO 7 MPH INCREASING TO 9
TO 15 MPH AFTER MIDNIGHT.
* CWR.................60 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (183-305) DECREASING TO LOW
(78-164) AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF SHOWERS.
* MAX TEMPERATURE.....50-55...EXCEPT 42-49 RIDGES.
* MIN HUMIDITY........52-67 PERCENT...EXCEPT 63-78 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 8 TO 14 MPH WITH GUSTS UP TO 30
MPH.
* RIDGES/UPR SLOPES....WEST WINDS 8 TO 14 MPH.
* CWR.................20 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 25 MPH.
* VENTILATION INDEX...MODERATE TO HIGH (458-566) INCREASING TO HIGH
TO VERY HIGH (644-1048) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS IN
THE EVENING.
* MIN TEMPERATURE.....24-31.
* MAX HUMIDITY........89-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 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.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (142-246) DECREASING TO LOW
(25-34) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....57-62...EXCEPT 49-56 RIDGES.
* MIN HUMIDITY........24-36 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.......5500 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-28) INCREASING TO LOW TO MODERATE
(182-242) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 28 TO 35. HIGHS 54 TO 62. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 26 TO 33. HIGHS 55 TO 63. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 28 TO 36. HIGHS 59 TO 67. WEST
WINDS UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 30 TO 38. HIGHS 62 TO 70.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 31 TO 39. HIGHS 59 TO 68. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ697-251115-
CENTRAL BLUE MOUNTAINS-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....44-51.
* MAX HUMIDITY........57-72 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (197-287) DECREASING TO LOW
(55-79) AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE
MORNING.
* MAX TEMPERATURE.....55-61.
* MIN HUMIDITY........33-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 8 TO 14 MPH WITH GUSTS UP TO 30
MPH.
* RIDGES/UPR SLOPES....WEST WINDS 8 TO 14 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH INCREASING TO WEST
AROUND 25 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW TO MODERATE (192-256) INCREASING TO VERY
HIGH (1050) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....29-35.
* MAX HUMIDITY........78-91 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 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.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE (364-422) DECREASING TO LOW (32-52)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....58-63...EXCEPT 53-59 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.......5500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE SOUTHWEST
IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-39) INCREASING TO LOW TO MODERATE
(167-247) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 33 TO 39. HIGHS 57 TO 63. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 31 TO 37. HIGHS 55 TO 62. NORTHWEST
WINDS UP TO 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 31 TO 37. HIGHS 59 TO 65. WEST
WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 34 TO 40. HIGHS 61 TO 68.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 35 TO 41. HIGHS 61 TO 67. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ698-251115-
SOUTHERN BLUE MOUNTAINS-
128 PM PDT THU SEP 24 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....44-51.
* MAX HUMIDITY........54-69 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
* VENTILATION INDEX...MODERATE (218-324) DECREASING TO LOW (50-76)
AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF SHOWERS IN THE MORNING.
* MAX TEMPERATURE.....57-65.
* MIN HUMIDITY........29-36 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 10 TO 16 MPH WITH GUSTS UP TO 30
MPH.
* RIDGES/UPR SLOPES....WEST WINDS 10 TO 16 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST 20 TO 25 MPH.
* VENTILATION INDEX...LOW TO MODERATE (185-285) INCREASING TO VERY
HIGH (1050) IN THE AFTERNOON.
FRIDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....29-35.
* MAX HUMIDITY........78-93 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE (374-452) DECREASING TO LOW (37-59)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....58-63.
* 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.......5500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE SOUTH IN
THE AFTERNOON.
* VENTILATION INDEX...LOW (27-35) INCREASING TO LOW TO MODERATE
(166-228) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
SUNDAY
MOSTLY CLOUDY. LOWS 34 TO 40. HIGHS 61 TO 67. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 31 TO 37. HIGHS 59 TO 66. NORTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 31 TO 37. HIGHS 63 TO 68. WEST
WINDS 1 TO 6 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 34 TO 40. HIGHS 65 TO 71. WEST
WINDS UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 35 TO 41. HIGHS 65 TO 70. WEST
WINDS 1 TO 6 MPH.
8-14 DAY OUTLOOK FOR FRIDAY OCTOBER 2 THROUGH THURSDAY OCTOBER 8
A GREATER CHANCE OF ABOVE SEASONAL AVERAGE TEMPERATURES AND BELOW
SEASONAL AVERAGE PRECIPITATION.
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