471
FNUS56 KPDT 052156
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
256 PM PDT TUE MAY 5 2026
DISCUSSION
WARM AND DRY CONDITIONS PERSIST THROUGH THE WEEK, AS
AFTERNOON HUMIDITIES CONTINUE TO TREND DOWNWARD OVER THE WEEKEND.
BREEZY WINDS THIS AFTERNOON WILL SUBSIDE THIS EVENING, BUT WILL
RETURN EACH DAY THIS WEEK AND PEAK ON FRIDAY. GOOD OVERNIGHT
RECOVERIES TONIGHT AND WEDNESDAY NIGHT WILL BECOME MORE MODERATE
THURSDAY NIGHT INTO FRIDAY MORNING BEFORE IMPROVING OVER 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. ***
WAZ695-061130-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-53...EXCEPT 43-48 RIDGES.
* MAX HUMIDITY........67-82 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (88-228) DECREASING TO LOW
(25-73) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....68-76...EXCEPT 60-68 RIDGES.
* MIN HUMIDITY........34-49 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 4 TO 9
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH INCREASING TO 7 TO 13
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (32-120) INCREASING TO MODERATE TO VERY
HIGH (418-710) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....42-48...EXCEPT 38-43 RIDGES.
* MAX HUMIDITY........62-77 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 8 TO 14 MPH WITH GUSTS UP TO 25
MPH.
* RIDGES/UPR SLOPES....WEST WINDS 8 TO 14 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 20 MPH.
* VENTILATION INDEX...MODERATE TO HIGH (225-507) DECREASING TO LOW
(25-197) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....64-73...EXCEPT 56-65 RIDGES.
* MIN HUMIDITY........27-42 PERCENT.
* 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.......8000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (33-187) INCREASING TO MODERATE (291-487)
IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
MOSTLY CLOUDY. LOWS 39 TO 46. HIGHS 50 TO 63. WEST
WINDS 6 TO 12 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 36 TO 42. HIGHS 56 TO 70. WEST
WINDS 9 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 37 TO 44. HIGHS 63 TO 76. WEST
WINDS 1 TO 6 MPH.
MONDAY
PARTLY CLOUDY. LOWS 40 TO 48. HIGHS 61 TO 76. WEST
WINDS 4 TO 9 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 40 TO 47. HIGHS 58 TO 71. WEST
WINDS 6 TO 12 MPH.
WAZ690-061130-
KITTITAS VALLEY-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....51-56.
* MAX HUMIDITY........57-71 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 6 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (146-262) DECREASING TO LOW
(25-63) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....76-85...EXCEPT 69-78 RIDGES.
* MIN HUMIDITY........25-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 5 MPH INCREASING TO
WEST 7 TO 13 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 3 TO 7 MPH INCREASING TO
WEST 8 TO 14 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH INCREASING TO WEST
AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (41-107) INCREASING TO MODERATE TO VERY
HIGH (494-780) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....48-53.
* MAX HUMIDITY........51-64 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 13 TO 19 MPH WITH GUSTS UP
TO 30 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 16 TO 22 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH.
* VENTILATION INDEX...MODERATE TO HIGH (352-560) DECREASING TO LOW
(36-174) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....73-81...EXCEPT 66-74 RIDGES.
* MIN HUMIDITY........20-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 11 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (66-196) INCREASING TO MODERATE TO HIGH
(420-586) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
MOSTLY CLOUDY. LOWS 48 TO 53. HIGHS 65 TO 74. WEST
WINDS 9 TO 15 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 42 TO 47. HIGHS 70 TO 78. WEST
WINDS 13 TO 19 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 46 TO 51. HIGHS 75 TO 83. NORTHWEST
WINDS 2 TO 7 MPH.
MONDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 76 TO 85. NORTHWEST
WINDS 5 TO 11 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 48 TO 53. HIGHS 72 TO 80.
NORTHWEST WINDS 9 TO 15 MPH.
WAZ694-061130-
YAKAMA ALPINE DISTRICT-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-53.
* MAX HUMIDITY........65-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...LOW (71-153) DECREASING TO LOW (25-53) AFTER
MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....73-81...EXCEPT 63-74 RIDGES.
* MIN HUMIDITY........29-44 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (30-88) INCREASING TO MODERATE TO HIGH
(387-613) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....44-50...EXCEPT 38-46 RIDGES.
* MAX HUMIDITY........52-67 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH. GUSTS TO 35 MPH IN
THE EVENING.
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...MODERATE (235-425) DECREASING TO LOW (25-126)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....69-76...EXCEPT 58-70 RIDGES.
* MIN HUMIDITY........20-30 PERCENT.
* 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.......7000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...LOW (42-136) INCREASING TO MODERATE (298-440)
IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
MOSTLY CLOUDY. LOWS 41 TO 48. HIGHS 56 TO 68. WEST
WINDS 5 TO 11 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 37 TO 45. HIGHS 63 TO 75. WEST
WINDS 7 TO 13 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 40 TO 48. HIGHS 68 TO 81. WEST
WINDS 1 TO 6 MPH.
MONDAY
PARTLY CLOUDY. LOWS 43 TO 51. HIGHS 68 TO 81. WEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 42 TO 50. HIGHS 64 TO 77. WEST
WINDS 4 TO 9 MPH.
ORZ691-WAZ691-061130-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........57-72 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 3 TO 8 MPH SHIFTING TO THE
SOUTH 2 TO 5 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....EAST WINDS 4 TO 10 MPH SHIFTING TO THE
SOUTHWEST 2 TO 6 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH SHIFTING TO THE SOUTH
AFTER MIDNIGHT.
* VENTILATION INDEX...LOW TO MODERATE (148-276) DECREASING TO LOW
(25-48) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-87...EXCEPT 75-82 RIDGES.
* MIN HUMIDITY........24-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 10 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (36-116) INCREASING TO MODERATE TO VERY
HIGH (461-771) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....49-55.
* MAX HUMIDITY........58-72 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 8 TO 14 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 9 TO 15 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...MODERATE TO HIGH (376-566) DECREASING TO LOW
(33-109) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....73-81.
* MIN HUMIDITY........18-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 7 TO 13 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (60-222) INCREASING TO
MODERATE TO VERY HIGH (435-759) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
MOSTLY CLOUDY. LOWS 49 TO 54. HIGHS 68 TO 77. SOUTHWEST
WINDS 8 TO 14 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 72 TO 79. WEST
WINDS 10 TO 16 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 46 TO 51. HIGHS 79 TO 86. SOUTHWEST
WINDS 1 TO 6 MPH.
MONDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 80 TO 88. WEST
WINDS 3 TO 8 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 75 TO 83. WEST
WINDS 6 TO 12 MPH.
ORZ692-WAZ692-061130-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....44-51.
* MAX HUMIDITY........51-66 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....EAST AROUND 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (126-264) DECREASING TO LOW
(25-65) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-79...EXCEPT 63-70 RIDGES.
* MIN HUMIDITY........34-44 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH INCREASING TO WEST
AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (31-85) INCREASING TO HIGH TO VERY HIGH
(552-748) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....47-53...EXCEPT 43-48 RIDGES.
* MAX HUMIDITY........63-76 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 11 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...MODERATE (285-465) DECREASING TO LOW (25-134)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....66-74...EXCEPT 58-65 RIDGES.
* MIN HUMIDITY........26-34 PERCENT.
* 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.......8000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (118-282) INCREASING TO
MODERATE TO VERY HIGH (499-785) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
MOSTLY CLOUDY. LOWS 43 TO 50. HIGHS 58 TO 69. SOUTHWEST
WINDS 6 TO 12 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 39 TO 46. HIGHS 59 TO 70. WEST
WINDS 7 TO 13 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 40 TO 46. HIGHS 68 TO 79. SOUTHWEST
WINDS UP TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 45 TO 52. HIGHS 70 TO 80. WEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 45 TO 52. HIGHS 64 TO 75. WEST
WINDS 2 TO 7 MPH.
ORZ693-WAZ693-061130-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....40-47.
* MAX HUMIDITY........51-65 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 11 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 9 TO 15 MPH BECOMING NORTHEAST 2
TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 15 MPH BECOMING EAST AROUND 5
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE (230-428) DECREASING TO LOW (25-61)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-78...EXCEPT 63-72 RIDGES.
* MIN HUMIDITY........28-36 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH INCREASING TO WEST
AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-80) INCREASING TO HIGH TO VERY HIGH
(566-806) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....44-51.
* MAX HUMIDITY........58-70 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...MODERATE TO HIGH (334-532) DECREASING TO LOW
(25-140) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....67-76...EXCEPT 62-69 RIDGES.
* MIN HUMIDITY........24-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 3 TO 8
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 10 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (84-254) INCREASING TO HIGH
TO VERY HIGH (614-842) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 42 TO 49. HIGHS 63 TO 72. WEST
WINDS 3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 39 TO 46. HIGHS 62 TO 71. WEST
WINDS 6 TO 12 MPH.
SUNDAY
WARMER. MOSTLY CLEAR. LOWS 38 TO 45. HIGHS 73 TO 81.
SOUTH WINDS 1 TO 6 MPH.
MONDAY
PARTLY CLOUDY. LOWS 43 TO 50. HIGHS 75 TO 84. WEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 44 TO 51. HIGHS 69 TO 78. WEST
WINDS 4 TO 9 MPH.
ORZ701-061130-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........73-86 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH...EXCEPT WEST 3 TO 8
MPH IN THE EASTERN COLUMBIA RIVER GORGE.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (122-206) DECREASING TO LOW
(25-94) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....76-81...EXCEPT 71-78 RIDGES.
* MIN HUMIDITY........31-42 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 6 MPH SHIFTING TO THE
NORTHWEST 6 TO 12 MPH IN THE AFTERNOON. IN THE EASTERN
COLUMBIA RIVER GORGE, WEST WINDS 2 TO 7 MPH INCREASING TO 9
TO 15 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (50-158) INCREASING TO MODERATE TO HIGH
(453-643) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....47-52.
* MAX HUMIDITY........66-73 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 8 TO 14 MPH. IN THE EASTERN
COLUMBIA RIVER GORGE, GUSTS TO 30 MPH IN THE EVENING.
* RIDGES/UPR SLOPES....WEST WINDS 8 TO 14 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...MODERATE (282-462) DECREASING TO LOW (40-170)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....72-77...EXCEPT 66-74 RIDGES.
* MIN HUMIDITY........23-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 10 MPH...EXCEPT WEST 5 TO 11
MPH IN THE EASTERN COLUMBIA RIVER GORGE. IN THE EASTERN
COLUMBIA RIVER GORGE, GUSTS TO 25 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (59-189) INCREASING TO HIGH TO VERY HIGH
(504-712) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 66 TO 71. WEST
WINDS 6 TO 12 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 72 TO 78. WEST
WINDS 8 TO 14 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 78 TO 84. NORTHWEST
WINDS 1 TO 6 MPH.
MONDAY
PARTLY CLOUDY. LOWS 48 TO 53. HIGHS 78 TO 84. WEST
WINDS 3 TO 8 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 48 TO 53. HIGHS 74 TO 80. WEST
WINDS 6 TO 12 MPH.
ORZ702-061130-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-52.
* MAX HUMIDITY........71-86 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 1 TO 6 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...LOW (67-155) DECREASING TO LOW (25-58) AFTER
MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....72-80...EXCEPT 65-75 RIDGES.
* MIN HUMIDITY........32-46 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 6
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (29-91) INCREASING TO MODERATE TO HIGH
(305-531) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....41-48.
* MAX HUMIDITY........67-82 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 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.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...LOW TO MODERATE (153-347) DECREASING TO LOW
(25-124) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....67-75...EXCEPT 61-71 RIDGES.
* MIN HUMIDITY........23-32 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 5
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...LOW (33-145) INCREASING TO MODERATE TO HIGH
(334-554) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 41 TO 47. HIGHS 56 TO 68. WEST
WINDS 5 TO 11 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 38 TO 45. HIGHS 64 TO 75. WEST
WINDS 5 TO 11 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 40 TO 47. HIGHS 70 TO 81. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 43 TO 50. HIGHS 69 TO 81. WEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 42 TO 49. HIGHS 64 TO 76. WEST
WINDS 3 TO 8 MPH.
ORZ695-061130-
EAGLE CAP WILDERNESS-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....42-47...EXCEPT 33-41 RIDGES.
* MAX HUMIDITY........53-60 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 6 TO 12 MPH SHIFTING TO THE
NORTHEAST 1 TO 6 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....NORTH WINDS 12 TO 18 MPH DECREASING TO 4 TO
9 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 20 MPH BECOMING NORTHEAST AROUND
10 MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE (211-477) DECREASING TO LOW (25-81)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....65-74...EXCEPT 54-65 RIDGES.
* MIN HUMIDITY........33-45 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 3 TO 7
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (25-112) INCREASING TO MODERATE TO HIGH
(319-607) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....43-48...EXCEPT 37-43 RIDGES.
* MAX HUMIDITY........57-66 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (142-346) DECREASING TO LOW
(25-96) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....63-74...EXCEPT 53-65 RIDGES.
* MIN HUMIDITY........27-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 10 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (37-183) INCREASING TO HIGH TO VERY HIGH
(513-723) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 37 TO 46. HIGHS 54 TO 68. WEST
WINDS 4 TO 9 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 33 TO 43. HIGHS 53 TO 68.
NORTHWEST WINDS 5 TO 11 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 34 TO 43. HIGHS 62 TO 77. WEST WINDS
2 TO 7 MPH.
MONDAY
PARTLY CLOUDY. LOWS 40 TO 48. HIGHS 65 TO 80. WEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 39 TO 48. HIGHS 60 TO 75. WEST
WINDS 3 TO 8 MPH.
ORZ694-061130-
GRANDE RONDE VALLEY OF OREGON-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....42-47.
* MAX HUMIDITY........63-74 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 9 TO 15 MPH WITH GUSTS UP TO 30
MPH BECOMING NORTHWEST 2 TO 5 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....NORTH WINDS 10 TO 16 MPH BECOMING NORTHWEST
2 TO 6 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 15 MPH DECREASING TO AROUND 5
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE (311-449) DECREASING TO LOW (34-64)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....74-79.
* MIN HUMIDITY........31-36 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHWEST 2
TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTH 5 TO 8
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (25-56) INCREASING TO MODERATE TO HIGH
(410-582) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....45-50.
* MAX HUMIDITY........66-74 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (192-366) DECREASING TO LOW
(43-105) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....72-77.
* MIN HUMIDITY........24-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (73-185) INCREASING TO HIGH TO VERY HIGH
(697-841) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 69 TO 74. WEST
WINDS 4 TO 9 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 69 TO 74.
NORTHWEST WINDS 6 TO 12 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 78 TO 83. SOUTHEAST
WINDS 3 TO 8 MPH.
MONDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 81 TO 86. NORTHWEST
WINDS 3 TO 8 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 75 TO 80.
NORTHWEST WINDS 5 TO 11 MPH.
ORZ699-061130-
WESTERN FORESTED BLUE MOUNTAINS-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....42-47.
* MAX HUMIDITY........60-70 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 3 TO 8 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 5 TO 11 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 15 MPH DECREASING TO AROUND 5
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE (269-461) DECREASING TO LOW (25-47)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....71-76...EXCEPT 64-71 RIDGES.
* MIN HUMIDITY........29-38 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 6
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (30-92) INCREASING TO HIGH TO VERY HIGH
(531-743) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....43-48.
* MAX HUMIDITY........64-74 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE (296-448) DECREASING TO LOW (25-77)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....68-73...EXCEPT 61-68 RIDGES.
* MIN HUMIDITY........22-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (59-177) INCREASING TO HIGH TO VERY HIGH
(644-862) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 61 TO 68. WEST
WINDS 3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 37 TO 42. HIGHS 62 TO 70. WEST
WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 38 TO 43. HIGHS 71 TO 79. SOUTHWEST
WINDS 1 TO 6 MPH.
MONDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 73 TO 81. WEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 67 TO 75. WEST
WINDS 1 TO 6 MPH.
ORZ696-061130-
JOHN DAY VALLEY-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-50.
* MAX HUMIDITY........61-71 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 10 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 5 TO 11 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 15 MPH DECREASING TO AROUND 5
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE TO HIGH (346-546) DECREASING TO LOW
(25-41) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....73-81...EXCEPT 68-73 RIDGES.
* MIN HUMIDITY........23-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 3
TO 7 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (25-66) INCREASING TO HIGH TO VERY HIGH
(549-733) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....45-50.
* MAX HUMIDITY........67-76 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 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....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH BECOMING WEST AROUND
5 MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE TO HIGH (362-518) DECREASING TO LOW
(25-72) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....70-78...EXCEPT 66-71 RIDGES.
* MIN HUMIDITY........18-23 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 3 TO 8
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 5 TO 8
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (42-118) INCREASING TO HIGH TO VERY HIGH
(639-861) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 66 TO 73. WEST
WINDS 3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 68 TO 76. WEST
WINDS 6 TO 12 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 77 TO 86. EAST WINDS
UP TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 79 TO 87. NORTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 73 TO 81. WEST
WINDS 2 TO 7 MPH.
ORZ700-061130-
CENTRAL MOUNTAINS OF OREGON-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....42-49.
* MAX HUMIDITY........67-81 PERCENT...EXCEPT 63-70 PERCENT RIDGES.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 9 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH 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.....NORTH AROUND 15 MPH BECOMING NORTHWEST AROUND
5 MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE TO HIGH (404-634) DECREASING TO LOW
(25-35) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....75-81...EXCEPT 68-73 RIDGES.
* MIN HUMIDITY........20-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 2 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (41-77) INCREASING TO MODERATE TO HIGH
(496-666) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....42-47.
* MAX HUMIDITY........74-85 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE TO HIGH (427-663) DECREASING TO LOW
(25-65) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....74-79...EXCEPT 66-72 RIDGES.
* MIN HUMIDITY........16-21 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 3 TO 8
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 3 TO 8
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (36-96) INCREASING TO HIGH TO VERY HIGH
(612-864) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 40 TO 46. HIGHS 67 TO 73. WEST
WINDS 4 TO 9 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 35 TO 42. HIGHS 71 TO 78. WEST
WINDS 6 TO 12 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 40 TO 46. HIGHS 79 TO 86. NORTH
WINDS 1 TO 6 MPH.
MONDAY
PARTLY CLOUDY. LOWS 44 TO 50. HIGHS 80 TO 87. NORTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 75 TO 82.
NORTHWEST WINDS 3 TO 8 MPH.
ORZ703-061130-
WARM SPRINGS RESERVATION-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-53.
* MAX HUMIDITY........72-83 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (145-321) DECREASING TO LOW
(25-50) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....76-83...EXCEPT 64-73 RIDGES.
* MIN HUMIDITY........26-35 PERCENT...EXCEPT 34-49 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 4 TO 9
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (43-95) INCREASING TO MODERATE TO VERY
HIGH (487-719) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....44-49.
* MAX HUMIDITY........74-84 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 11 MPH. GUSTS TO 25 MPH IN
THE EVENING.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 11 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...MODERATE (289-471) DECREASING TO LOW (25-111)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING SUNNY.
* MAX TEMPERATURE.....71-80...EXCEPT 60-69 RIDGES.
* MIN HUMIDITY........20-28 PERCENT...EXCEPT 26-40 PERCENT 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.......7500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (44-134) INCREASING TO HIGH TO VERY HIGH
(525-721) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 61 TO 73. WEST
WINDS 5 TO 11 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 69 TO 80. WEST
WINDS 6 TO 12 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 75 TO 86. NORTHWEST
WINDS 1 TO 6 MPH.
MONDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 74 TO 87. NORTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 69 TO 82.
NORTHWEST WINDS 4 TO 10 MPH.
ORZ704-061130-
NORTHERN DESCHUTES NATIONAL FOREST-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....43-48.
* MAX HUMIDITY........73-87 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 3 TO 8 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (139-295) DECREASING TO LOW
(25-51) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....75-80...EXCEPT 63-73 RIDGES.
* MIN HUMIDITY........27-32 PERCENT...EXCEPT 33-48 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 1 TO 6
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 4 TO 10
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (48-104) INCREASING TO MODERATE TO VERY
HIGH (450-708) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....41-46.
* 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.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...MODERATE (258-470) DECREASING TO LOW (26-120)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING SUNNY.
* MAX TEMPERATURE.....72-77...EXCEPT 60-69 RIDGES.
* MIN HUMIDITY........21-26 PERCENT...EXCEPT 25-39 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (55-161) INCREASING TO HIGH TO VERY HIGH
(556-780) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 58 TO 69. WEST
WINDS 6 TO 12 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 36 TO 42. HIGHS 65 TO 78. WEST
WINDS 8 TO 14 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 70 TO 84. NORTHWEST
WINDS UP TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 70 TO 84. NORTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 66 TO 80.
NORTHWEST WINDS 3 TO 8 MPH.
ORZ705-061130-
SOUTHERN DESCHUTES NATIONAL FOREST-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....40-45.
* MAX HUMIDITY........77-92 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 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.....NORTH AROUND 15 MPH DECREASING TO AROUND 5
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE TO HIGH (207-579) DECREASING TO LOW
(25-34) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....73-78...EXCEPT 63-72 RIDGES.
* MIN HUMIDITY........22-29 PERCENT...EXCEPT 25-40 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 5
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (47-85) INCREASING TO MODERATE TO HIGH
(440-602) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....39-44.
* MAX HUMIDITY........81-96 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 7 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.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE TO HIGH (303-587) DECREASING TO LOW
(30-68) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING SUNNY.
* MAX TEMPERATURE.....72-77...EXCEPT 61-70 RIDGES.
* MIN HUMIDITY........16-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 6
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (46-104) INCREASING TO HIGH TO VERY HIGH
(647-893) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 38 TO 43. HIGHS 60 TO 70. WEST
WINDS 3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 34 TO 39. HIGHS 68 TO 78. WEST
WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 73 TO 84. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 74 TO 85. WEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 70 TO 80.
NORTHWEST WINDS 1 TO 6 MPH.
ORZ697-061130-
CENTRAL BLUE MOUNTAINS-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....40-45.
* MAX HUMIDITY........61-72 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 11 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 7 TO 13 MPH DECREASING TO 1 TO 5
MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE TO HIGH (438-620) DECREASING TO LOW
(25-60) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-75...EXCEPT 65-70 RIDGES.
* MIN HUMIDITY........25-32 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 5
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 3
TO 7 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (54-114) INCREASING TO HIGH (515-681) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....41-46.
* MAX HUMIDITY........63-78 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...MODERATE (301-425) DECREASING TO LOW (25-64)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....69-74...EXCEPT 63-69 RIDGES.
* MIN HUMIDITY........19-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 3 TO 8
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (46-124) INCREASING TO VERY HIGH
(747-951) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 63 TO 68. WEST
WINDS 3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 36 TO 41. HIGHS 63 TO 71.
NORTHWEST WINDS 5 TO 11 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 38 TO 43. HIGHS 72 TO 80. SOUTH
WINDS 1 TO 6 MPH.
MONDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 75 TO 82. WEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 69 TO 76.
NORTHWEST WINDS 2 TO 7 MPH.
ORZ698-061130-
SOUTHERN BLUE MOUNTAINS-
256 PM PDT TUE MAY 5 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....40-45.
* MAX HUMIDITY........64-73 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 10 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 5 TO 11 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 20 MPH DECREASING TO AROUND 10
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...HIGH (546-674) DECREASING TO LOW (25-56)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....71-76...EXCEPT 66-71 RIDGES.
* MIN HUMIDITY........21-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (50-90) INCREASING TO HIGH (565-679) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....41-46.
* MAX HUMIDITY........64-79 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...MODERATE TO HIGH (368-500) DECREASING TO LOW
(26-66) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-77.
* MIN HUMIDITY........13-18 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 3 TO 7
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 3 TO 7
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO AROUND 20
MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (62-120) INCREASING TO VERY HIGH
(877-1039) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 67 TO 73. WEST
WINDS 4 TO 9 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 35 TO 40. HIGHS 68 TO 74.
NORTHWEST WINDS 6 TO 12 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 38 TO 43. HIGHS 76 TO 82. NORTHEAST
WINDS UP TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 79 TO 86. WEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 74 TO 80.
NORTHWEST WINDS 2 TO 7 MPH.
8-14 DAY OUTLOOK FOR WEDNESDAY MAY 13 THROUGH TUESDAY MAY 19
A GREATER CHANCE OF ABOVE NORMAL TEMPERATURES AND BELOW NORMAL
PRECIPITATION.
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