390
FNUS56 KPDT 252023
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
123 PM PDT FRI SEP 25 2026
DISCUSSION
BREEZY CONDITIONS WILL REMAIN THROUGH THE COLUMBIA
RIVER GORGE, COLUMBIA BASIN, CENTRAL/NORTH CENTRAL OR, SIMCOE
HIGHLANDS, YAKIMA AND THE FOOTHILLS OF THE BLUES THROUGH THE
EVENING. RELATIVE HUMIDITY TODAY WILL BE ABOVE 30% ACROSS MUCH OF
THE AREA WITH THE SOUTHEASTERN PORTION OF THE REGION SEEING RHS
BELOW 20%. WINDS WILL SETTLE AGAIN SATURDAY RETURNING TO DIURNAL
BELOW 10 MPH. RELATIVE HUMIDITY WILL CONTINUE TO REMAIN ABOVE 20%
ACROSS THE ENTIRE REGION THROUGH THE WEEKEND.
***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. ***
WAZ695-261200-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN AND SNOW
SHOWERS IN THE EVENING.
* MIN TEMPERATURE.....32-38.
* MAX HUMIDITY........81-96 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH. GUSTS TO 30 MPH IN
THE EVENING.
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.
* CWR.................10 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 (342-452) DECREASING TO LOW (69-179)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....53-59...EXCEPT 45-52 RIDGES.
* MIN HUMIDITY........36-48 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....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.......5000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (63-117) INCREASING TO LOW TO MODERATE
(115-201) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....33-39.
* MAX HUMIDITY........59-74 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (28-54) DECREASING TO LOW (25-26) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....57-64...EXCEPT 49-56 RIDGES.
* MIN HUMIDITY........32-42 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.....EAST AROUND 5 MPH SHIFTING TO THE NORTHWEST
IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-27) INCREASING TO LOW (25-125) IN THE
AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 34 TO 40. HIGHS 53 TO 64. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS 39 TO 45.
HIGHS 47 TO 60. WEST WINDS 2 TO 7 MPH.
WEDNESDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS 38 TO
44. HIGHS 51 TO 62. WEST WINDS 1 TO 6 MPH.
THURSDAY
A CHANCE OF SHOWERS. MOSTLY CLOUDY. LOWS 38 TO 44.
HIGHS 47 TO 59. WEST WINDS 1 TO 6 MPH.
FRIDAY
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS 34 TO 40.
HIGHS 47 TO 58. WEST WINDS 2 TO 7 MPH.
WAZ690-261200-
KITTITAS VALLEY-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....37-42.
* MAX HUMIDITY........76-91 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH. GUSTS TO 30 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 (238-354) DECREASING TO LOW (36-70)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....58-64...EXCEPT 49-58 RIDGES.
* MIN HUMIDITY........32-42 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 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.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (44-92) INCREASING TO LOW TO MODERATE
(122-204) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....38-44.
* MAX HUMIDITY........58-73 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (34-60) DECREASING TO LOW (25-27) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....60-67...EXCEPT 52-60 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.......5000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-30) INCREASING TO LOW TO MODERATE
(129-239) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 39 TO 45. HIGHS 63 TO 70. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS 44 TO 49. HIGHS 61 TO 69. WEST
WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 62 TO 69. WEST
WINDS 1 TO 6 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 59 TO 67.
NORTHWEST WINDS 1 TO 6 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 58 TO 66. NORTHWEST
WINDS 3 TO 8 MPH.
WAZ694-261200-
YAKAMA ALPINE DISTRICT-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. A
CHANCE OF SHOWERS IN THE EVENING.
* MIN TEMPERATURE.....32-38.
* MAX HUMIDITY........84-99 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH. GUSTS TO 40 MPH IN
THE EVENING.
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.
* CWR.................0 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...LOW TO MODERATE (183-363) DECREASING TO LOW
(25-85) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....56-62...EXCEPT 48-56 RIDGES.
* MIN HUMIDITY........36-44 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 TO 5 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 (25-49) INCREASING TO LOW (135-185) IN
THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....34-41.
* MAX HUMIDITY........53-66 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (45-71) DECREASING TO LOW (25-31) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....59-66...EXCEPT 51-59 RIDGES.
* MIN HUMIDITY........32-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH 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.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-31) INCREASING TO LOW (64-188) IN THE
AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 35 TO 42. HIGHS 57 TO 68. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
A SLIGHT CHANCE OF SHOWERS. MOSTLY CLOUDY. LOWS 39 TO
46. HIGHS 53 TO 66. WEST WINDS 2 TO 7 MPH.
WEDNESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
39 TO 45. HIGHS 55 TO 67. WEST WINDS 2 TO 7 MPH.
THURSDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 39 TO
46. HIGHS 52 TO 63. WEST WINDS 1 TO 6 MPH.
FRIDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 35 TO
42. HIGHS 52 TO 63. WEST WINDS 2 TO 7 MPH.
ORZ691-WAZ691-261200-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. PATCHY BLOWING DUST IN THE
EVENING.
* MIN TEMPERATURE.....39-44.
* MAX HUMIDITY........82-97 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 9 TO 15 MPH WITH GUSTS UP TO 35
MPH SHIFTING TO THE SOUTHWEST 4 TO 9 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS 10 TO 16 MPH DECREASING TO 4 TO
10 MPH AFTER MIDNIGHT.
* 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 (299-415) DECREASING TO LOW (31-57)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....61-67...EXCEPT 56-63 RIDGES.
* MIN HUMIDITY........29-37 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 1 TO 6 MPH SHIFTING TO THE
NORTHEAST 1 TO 5 MPH IN THE AFTERNOON.
* 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.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH SHIFTING TO THE
NORTHEAST IN THE AFTERNOON.
* VENTILATION INDEX...LOW (34-76) INCREASING TO LOW (79-175) IN THE
AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....40-45.
* MAX HUMIDITY........56-71 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (57-121) DECREASING TO LOW (25-32) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....62-70...EXCEPT 58-65 RIDGES.
* MIN HUMIDITY........25-35 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 1 TO
6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 1 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-31) INCREASING TO LOW TO MODERATE
(153-263) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 67 TO 72. SOUTHWEST
WINDS UP TO 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 67 TO 74.
SOUTHWEST WINDS 4 TO 9 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 67 TO 73.
SOUTHWEST WINDS 4 TO 9 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 63 TO 70. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 61 TO 68. WEST
WINDS 3 TO 8 MPH.
ORZ692-WAZ692-261200-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....34-41.
* MAX HUMIDITY........82-97 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 7 TO 13 MPH WITH GUSTS UP TO 30
MPH SHIFTING TO THE SOUTHWEST 2 TO 7 MPH AFTER MIDNIGHT.
* 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 (284-408) DECREASING TO LOW (46-94)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....54-63...EXCEPT 49-54 RIDGES.
* MIN HUMIDITY........28-43 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 1 TO 5 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.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (63-109) INCREASING TO LOW (104-170) IN
THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....35-42.
* MAX HUMIDITY........58-71 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.....EAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (51-75) DECREASING TO LOW (25-31) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....57-65...EXCEPT 53-58 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.....SOUTHEAST AROUND 5 MPH SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25) INCREASING TO LOW (100-148) IN THE
AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 35 TO 43. HIGHS 58 TO 68. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 38 TO 46. HIGHS 58 TO 69.
SOUTHWEST WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 40 TO 47. HIGHS 59 TO 69.
SOUTHWEST WINDS 1 TO 6 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 41 TO 48. HIGHS 56 TO 66. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 37 TO 44. HIGHS 51 TO 61. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ693-WAZ693-261200-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....32-41.
* MAX HUMIDITY........79-94 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 10 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE (220-350) DECREASING TO LOW (42-76)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....55-64...EXCEPT 50-57 RIDGES.
* MIN HUMIDITY........25-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...LOW (40-86) INCREASING TO LOW TO MODERATE
(127-201) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....34-41.
* MAX HUMIDITY........60-75 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (56-80) DECREASING TO LOW (25) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....60-69...EXCEPT 54-61 RIDGES.
* MIN HUMIDITY........29-37 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.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25) INCREASING TO LOW (78-154) IN THE
AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 36 TO 43. HIGHS 62 TO 71. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 37 TO 45. HIGHS 62 TO 71. SOUTHWEST
WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 39 TO 47. HIGHS 63 TO 72.
SOUTHWEST WINDS 2 TO 7 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 39 TO 48. HIGHS 60 TO 70. WEST
WINDS 1 TO 5 MPH.
FRIDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
36 TO 44. HIGHS 54 TO 64. NORTHWEST WINDS 1 TO 5 MPH.
ORZ701-261200-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. A
SLIGHT CHANCE OF SHOWERS IN THE EVENING.
* MIN TEMPERATURE.....37-43.
* MAX HUMIDITY........87-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 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...LOW TO MODERATE (196-264) DECREASING TO LOW
(28-46) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....62-67...EXCEPT 57-62 RIDGES.
* MIN HUMIDITY........34-46 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH. IN THE EASTERN
COLUMBIA RIVER GORGE, NORTHWEST WINDS 1 TO 5 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.....WEST AROUND 5 MPH SHIFTING TO THE EAST IN THE
AFTERNOON.
* VENTILATION INDEX...LOW (30-52) INCREASING TO LOW (135-167) IN
THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....39-44.
* MAX HUMIDITY........58-70 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (58-90) DECREASING TO LOW (25-30) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....64-69.
* MIN HUMIDITY........30-38 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.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-27) INCREASING TO LOW TO MODERATE
(182-218) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 68 TO 73. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 65 TO 71. WEST
WINDS 2 TO 7 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 67 TO 72. WEST
WINDS 1 TO 6 MPH.
THURSDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 44 TO
49. HIGHS 63 TO 68. WEST WINDS 1 TO 6 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 62 TO 67. WEST
WINDS 3 TO 8 MPH.
ORZ702-261200-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING.
* MIN TEMPERATURE.....32-38.
* MAX HUMIDITY........83-98 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 1 TO 6 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 20 MPH DECREASING TO AROUND 10
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE (206-268) DECREASING TO LOW (31-57)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....56-63...EXCEPT 51-58 RIDGES.
* MIN HUMIDITY........36-49 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.....NORTHWEST AROUND 5 MPH SHIFTING TO THE EAST
IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-37) INCREASING TO LOW (131-171) IN
THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....35-41.
* MAX HUMIDITY........51-59 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.....EAST AROUND 10 MPH.
* VENTILATION INDEX...LOW (75-93) DECREASING TO LOW (28-42) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....59-65...EXCEPT 54-61 RIDGES.
* MIN HUMIDITY........33-41 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.......4000 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (27-47) INCREASING TO LOW TO MODERATE
(180-208) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 36 TO 42. HIGHS 57 TO 70. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 38 TO
44. HIGHS 55 TO 69. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
40 TO 46. HIGHS 57 TO 70. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 40 TO
46. HIGHS 52 TO 65. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
36 TO 42. HIGHS 51 TO 63. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
ORZ695-261200-
EAGLE CAP WILDERNESS-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....33-39...EXCEPT 27-34 RIDGES.
* MAX HUMIDITY........73-88 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT EXCELLENT RIDGES.
* 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.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (189-315) DECREASING TO LOW
(28-70) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....53-63...EXCEPT 43-53 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.......5000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...LOW (31-55) INCREASING TO LOW TO MODERATE
(136-210) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....36-42...EXCEPT 31-37 RIDGES.
* MAX HUMIDITY........50-63 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (30-54) DECREASING TO LOW (25-26) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....58-68...EXCEPT 49-59 RIDGES.
* MIN HUMIDITY........32-42 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 SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25) INCREASING TO LOW TO MODERATE
(151-317) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 33 TO 41. HIGHS 54 TO 68. NORTH
WINDS 1 TO 6 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 34 TO 42. HIGHS 53 TO 68. NORTHWEST
WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 36 TO 44. HIGHS 54 TO 69. WEST
WINDS 1 TO 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 37 TO 45. HIGHS 52 TO 66. WEST
WINDS 1 TO 6 MPH.
FRIDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN AND SNOW
SHOWERS. LOWS 33 TO 41. HIGHS 46 TO 60. NORTHWEST WINDS 2 TO
7 MPH.
ORZ694-261200-
GRANDE RONDE VALLEY OF OREGON-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....31-37.
* MAX HUMIDITY........93-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH DECREASING TO AROUND
5 MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE (230-284) DECREASING TO LOW (25-41)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....60-65.
* 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.......4500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...LOW (33-55) INCREASING TO LOW (113-157) IN
THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....33-38.
* MAX HUMIDITY........64-77 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...LOW (39-61) DECREASING TO LOW (25-27) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....65-70.
* MIN HUMIDITY........31-36 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.......3500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...LOW (25) INCREASING TO LOW (94-124) IN THE
AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 33 TO 39. HIGHS 68 TO 73. NORTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 34 TO 41. HIGHS 68 TO 73. WEST
WINDS 2 TO 7 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 37 TO 43. HIGHS 69 TO 74.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 38 TO 44. HIGHS 66 TO 71. WEST
WINDS 1 TO 6 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 35 TO 41. HIGHS 60 TO 65. NORTHWEST
WINDS 4 TO 9 MPH.
ORZ699-261200-
WESTERN FORESTED BLUE MOUNTAINS-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....31-37.
* MAX HUMIDITY........83-98 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* 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 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE (257-357) DECREASING TO LOW (33-83)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....56-62...EXCEPT 50-57 RIDGES.
* MIN HUMIDITY........23-34 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 (30-54) INCREASING TO LOW TO MODERATE
(111-229) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....34-39.
* MAX HUMIDITY........53-66 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (57-101) DECREASING TO LOW (25-29) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....58-66...EXCEPT 53-61 RIDGES.
* MIN HUMIDITY........29-38 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.......6500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25) INCREASING TO LOW TO MODERATE
(126-250) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 34 TO 39. HIGHS 58 TO 67. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 36 TO 42. HIGHS 59 TO 68. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 38 TO 43. HIGHS 61 TO 69.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 57 TO 65. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 35 TO 40. HIGHS 51 TO 60. NORTHWEST
WINDS 1 TO 5 MPH.
ORZ696-261200-
JOHN DAY VALLEY-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....34-40.
* MAX HUMIDITY........79-94 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 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.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 15 MPH BECOMING NORTHWEST AROUND
5 MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE (255-307) DECREASING TO LOW (25-44)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....59-67...EXCEPT 54-59 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.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-32) INCREASING TO LOW TO MODERATE
(118-208) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....37-42.
* MAX HUMIDITY........55-65 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 1 TO 5 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (64-110) DECREASING TO LOW (25-28) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....61-69...EXCEPT 55-60 RIDGES.
* MIN HUMIDITY........27-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-26) INCREASING TO LOW TO MODERATE
(108-214) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 36 TO 41. HIGHS 63 TO 72. NORTHWEST
WINDS UP TO 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 64 TO 73.
SOUTHWEST WINDS UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 66 TO 74.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 41 TO 47. HIGHS 61 TO 70. WEST
WINDS UP TO 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 37 TO 42. HIGHS 56 TO 64. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ700-261200-
CENTRAL MOUNTAINS OF OREGON-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....29-37.
* MAX HUMIDITY........87-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 8 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH DECREASING TO AROUND
5 MPH AFTER MIDNIGHT.
* VENTILATION INDEX...LOW TO MODERATE (198-286) DECREASING TO LOW
(25-34) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....60-65...EXCEPT 53-59 RIDGES.
* MIN HUMIDITY........23-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHEAST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-32) INCREASING TO LOW TO MODERATE
(187-267) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....33-39.
* MAX HUMIDITY........60-73 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (95-153) DECREASING TO LOW (25-31) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....60-66...EXCEPT 54-61 RIDGES.
* MIN HUMIDITY........25-35 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 1 TO
6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-26) INCREASING TO LOW (112-190) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 31 TO 39. HIGHS 64 TO 70. NORTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 34 TO 43. HIGHS 66 TO 72. WEST
WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 35 TO 44. HIGHS 67 TO 73. WEST
WINDS 1 TO 6 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 36 TO 45. HIGHS 62 TO 67. WEST
WINDS 1 TO 6 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 31 TO 40. HIGHS 57 TO 63. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ703-261200-
WARM SPRINGS RESERVATION-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. A
SLIGHT CHANCE OF SHOWERS IN THE EVENING.
* MIN TEMPERATURE.....34-39.
* MAX HUMIDITY........86-99 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 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 (172-246) DECREASING TO LOW
(25-43) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....58-65...EXCEPT 49-56 RIDGES.
* MIN HUMIDITY........31-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING EAST 1 TO 5
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH SHIFTING TO THE EAST
IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-28) INCREASING TO LOW TO MODERATE
(164-200) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....37-42.
* MAX HUMIDITY........55-62 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 1 TO 6 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.
* VENTILATION INDEX...LOW (100-130) DECREASING TO LOW (26-36) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....60-67...EXCEPT 51-58 RIDGES.
* MIN HUMIDITY........29-37 PERCENT...EXCEPT 36-49 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHEAST 2
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 1 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (25-35) INCREASING TO LOW TO MODERATE
(186-238) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 37 TO 42. HIGHS 63 TO 73. WEST WINDS
1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 61 TO 73. WEST
WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 63 TO 73. WEST
WINDS 2 TO 7 MPH.
THURSDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 42 TO
47. HIGHS 57 TO 68. WEST WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 38 TO 43. HIGHS 56 TO 65. WEST
WINDS 2 TO 7 MPH.
ORZ704-261200-
NORTHERN DESCHUTES NATIONAL FOREST-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING.
* MIN TEMPERATURE.....29-35.
* 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 3 TO 8 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 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 (149-195) DECREASING TO LOW (25-28) AFTER
MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....58-63...EXCEPT 49-56 RIDGES.
* MIN HUMIDITY........32-39 PERCENT...EXCEPT 38-53 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (25-36) INCREASING TO LOW TO MODERATE
(182-232) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....32-38.
* MAX HUMIDITY........60-75 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (93-133) DECREASING TO LOW (25-32) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....59-65...EXCEPT 51-57 RIDGES.
* MIN HUMIDITY........31-39 PERCENT...EXCEPT 38-53 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS UP 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.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-29) INCREASING TO LOW (134-192) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 31 TO 37. HIGHS 58 TO 70. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 34 TO 40. HIGHS 58 TO 69. WEST
WINDS 1 TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 36 TO 42. HIGHS 60 TO 71. WEST
WINDS UP TO 5 MPH.
THURSDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 37 TO
43. HIGHS 54 TO 65. WEST WINDS UP TO 5 MPH.
FRIDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
32 TO 38. HIGHS 51 TO 62. NORTHWEST WINDS 1 TO 6 MPH.
ORZ705-261200-
SOUTHERN DESCHUTES NATIONAL FOREST-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....26-32.
* MAX HUMIDITY........95-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS UP TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH SHIFTING TO THE NORTHEAST
AFTER MIDNIGHT.
* VENTILATION INDEX...LOW TO MODERATE (132-202) DECREASING TO LOW
(25-30) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....58-63...EXCEPT 49-57 RIDGES.
* MIN HUMIDITY........27-41 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.......6000 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (32-50) INCREASING TO MODERATE (246-312)
IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....29-36.
* MAX HUMIDITY........66-81 PERCENT...EXCEPT 58-70 PERCENT RIDGES.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (104-164) DECREASING TO LOW (25-34) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....58-63...EXCEPT 50-58 RIDGES.
* MIN HUMIDITY........29-42 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.......6500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-28) INCREASING TO LOW (83-189) IN THE
AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 27 TO 35. HIGHS 60 TO 68. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 30 TO 38. HIGHS 60 TO 69. WEST
WINDS UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 31 TO 39. HIGHS 63 TO 71.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 32 TO 40. HIGHS 56 TO 64. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 28 TO 35. HIGHS 53 TO 61. NORTHWEST
WINDS 1 TO 5 MPH.
ORZ697-261200-
CENTRAL BLUE MOUNTAINS-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....29-35.
* MAX HUMIDITY........81-94 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 8 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 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 (260-340) DECREASING TO LOW (28-48)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....58-63...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.......6000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-39) INCREASING TO MODERATE (226-284)
IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....34-39.
* MAX HUMIDITY........51-60 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* VENTILATION INDEX...LOW (65-97) DECREASING TO LOW (25-28) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....62-67...EXCEPT 56-62 RIDGES.
* MIN HUMIDITY........28-35 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.......7500 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH SHIFTING TO THE SOUTHWEST
IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25) INCREASING TO MODERATE (257-435) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 33 TO 38. HIGHS 60 TO 67. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 34 TO 39. HIGHS 61 TO 68. NORTHWEST
WINDS UP TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 35 TO 41. HIGHS 63 TO 70. WEST
WINDS UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 37 TO 43. HIGHS 59 TO 66. WEST
WINDS UP TO 5 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 32 TO 38. HIGHS 53 TO 59. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ698-261200-
SOUTHERN BLUE MOUNTAINS-
123 PM PDT FRI SEP 25 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....30-35.
* MAX HUMIDITY........79-94 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 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 (279-339) DECREASING TO LOW (34-46)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....59-64...EXCEPT 54-59 RIDGES.
* MIN HUMIDITY........25-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE SOUTH
IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-37) INCREASING TO MODERATE (208-280)
IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....35-41.
* MAX HUMIDITY........49-61 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.....EAST AROUND 10 MPH.
* VENTILATION INDEX...LOW (87-117) DECREASING TO LOW (28-38) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....62-68.
* MIN HUMIDITY........24-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH SHIFTING TO THE SOUTHWEST
IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-30) INCREASING TO MODERATE (258-424)
IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLEAR. LOWS 33 TO 39. HIGHS 64 TO 71. NORTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 33 TO 39. HIGHS 66 TO 72. NORTHWEST
WINDS 1 TO 6 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 35 TO 41. HIGHS 67 TO 73.
NORTHWEST WINDS 1 TO 6 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 36 TO 43. HIGHS 63 TO 70. WEST
WINDS 1 TO 6 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 32 TO 39. HIGHS 58 TO 64. NORTHWEST
WINDS 2 TO 7 MPH.
8-14 DAY OUTLOOK FOR SATURDAY OCTOBER 3 THROUGH FRIDAY OCTOBER 9
A GREATER CHANCE OF ABOVE SEASONABLE AVERAGE TEMPERATURES AND
BELOW SEASONAL AVERAGE PRECIPITATION.
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