555
FNUS56 KPDT 102017
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
117 PM PDT SUN AUG 10 2025
DISCUSSION
INCREASING HEAT IS EXPECTED THROUGH TUESDAY.
EXTREME HEAT WARNINGS ARE IN EFFECT FOR THIS AFTERNOON THROUGH
TUESDAY EVENING FOR MOST LOWER ELEVATION AREAS FROM CENTRAL OREGON
TO NORTHEAST OREGON TO SOUTHEAST AND SOUTH-CENTRAL WASHINGTON.
BY MIDWEEK, A TROUGH IS EXPECTED TO MOVE THROUGH THE AREA AND
COOL THINGS DOWN AND ALSO BRING BREEZY TO WINDY CONDITIONS,
ESPECIALLY FOR THE CASCADE GAPS AND COLUMBIA BASIN, AND ENHANCED
TO POSSIBLY CRITICAL FIRE WEATHER CONCERNS FOCUSED ON LATER
TUESDAY THROUGH WEDNESDAY AT THIS TIME, AND BREEZY CONDITIONS
LINGERING INTO THURSDAY. HIGHER RELATIVE HUMIDITY VALUES AND
LIGHTER WINDS ARE EXPECTED AFTER THURSDAY.
DRY WEATHER IS EXPECTED THROUGH FRIDAY, WHEN SOME PRECIPITATION
WILL MOVE INTO THE MOUNTAIN AREAS.
***WINDS ARE 20 FOOT 10 MINUTE AVERAGES***
***CWR-CHANCE OF WETTING RAIN 0.10 OR GREATER***
***VENTILATION INDEX IS DERIVED FROM THE
TRANSPORT WIND MULTIPLIED BY THE MIXING
HEIGHT IN 100'S OF FEET. INDEX CATEGORIES
ARE A GENERALIZED INDICATOR AND USERS ARE
ENCOURAGE TO DEVELOP CRITERIA THAT ARE
SUITABLE AND REPRESENTATIVE OF DISPERSION
CONDITIONS IN THEIR LOCAL AREA OF INTEREST.***
NOTE: MAX TRANSPORT WINDS MAY NOT OCCUR
AT THE SAME TIME AS MAX MIXING HEIGHT.
WAZ695-111130-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....57-64.
* MAX HUMIDITY........48-63 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (125-361) DECREASING TO POOR
(25-126) AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....86-94...EXCEPT 78-86 RIDGES.
* MIN HUMIDITY........23-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 6 MPH IN THE MORNING
BECOMING UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 1 TO 6 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE SOUTHEAST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-86) INCREASING TO POOR TO FAIR
(44-254) IN THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....60-66.
* MAX HUMIDITY........49-64 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
NORTHWEST 1 TO 5 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....NORTHWEST 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.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (66-184) DECREASING TO POOR (25-65)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....85-94...EXCEPT 77-85 RIDGES.
* MIN HUMIDITY........24-36 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-52) INCREASING TO FAIR TO GOOD
(416-638) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
NOT AS WARM. MOSTLY CLEAR. LOWS 53 TO 61. HIGHS
66 TO 80. WEST WINDS 4 TO 9 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 45 TO 53. HIGHS 61 TO 76. WEST
WINDS 5 TO 11 MPH.
FRIDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 46 TO
53. HIGHS 57 TO 72. WEST WINDS 3 TO 8 MPH.
SATURDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS 49 TO
55. HIGHS 60 TO 74. WEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
48 TO 53. HIGHS 60 TO 75. WEST WINDS 2 TO 7 MPH.
WAZ690-111130-
KITTITAS VALLEY-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....64-69.
* MAX HUMIDITY........40-55 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 10 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
* VENTILATION INDEX...FAIR TO GOOD (324-508) DECREASING TO POOR
(37-139) AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....93-99...EXCEPT 82-94 RIDGES.
* MIN HUMIDITY........19-24 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (67-169) INCREASING TO FAIR (255-455) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........CLEAR.
* MIN TEMPERATURE.....66-72.
* MAX HUMIDITY........38-53 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
NORTH 2 TO 7 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING NORTH 2
TO 7 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (149-277) DECREASING TO POOR
(30-110) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....94-101...EXCEPT 84-96 RIDGES.
* MIN HUMIDITY........19-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 6 MPH SHIFTING TO THE
SOUTH 2 TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (35-103) INCREASING TO FAIR TO GOOD
(457-655) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 63 TO 68. HIGHS 83 TO 92. NORTHWEST
WINDS 7 TO 13 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 53 TO 58. HIGHS 78 TO 86. WEST
WINDS 9 TO 15 MPH.
FRIDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
54 TO 59. HIGHS 74 TO 82. NORTHWEST WINDS 6 TO 12 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 55 TO
60. HIGHS 76 TO 84. WEST WINDS 3 TO 8 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 53 TO 59. HIGHS 77 TO 85. WEST
WINDS 3 TO 8 MPH.
WAZ694-111130-
YAKAMA ALPINE DISTRICT-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....59-66.
* MAX HUMIDITY........43-58 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 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 AROUND 5 MPH.
* VENTILATION INDEX...POOR TO FAIR (97-209) DECREASING TO POOR
(25-65) AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....91-98...EXCEPT 81-92 RIDGES.
* MIN HUMIDITY........18-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTH 1 TO
5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST WINDS 1 TO 5 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-39) INCREASING TO POOR TO FAIR
(101-249) IN THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........CLEAR.
* MIN TEMPERATURE.....61-67.
* MAX HUMIDITY........42-57 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (59-131) DECREASING TO POOR (25-59)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....90-97...EXCEPT 80-91 RIDGES.
* MIN HUMIDITY........19-31 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHWEST 1
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTHWEST 2
TO 7 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE WEST IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (25-45) INCREASING TO FAIR TO GOOD
(396-566) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
NOT AS WARM. CLEAR. LOWS 55 TO 62. HIGHS 72 TO 86.
WEST WINDS 4 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 45 TO 53. HIGHS 68 TO 81. WEST
WINDS 5 TO 11 MPH.
FRIDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
47 TO 54. HIGHS 64 TO 77. WEST WINDS 2 TO 7 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 50 TO
56. HIGHS 65 TO 78. WEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 48 TO 55. HIGHS 66 TO 79. WEST
WINDS 2 TO 7 MPH.
ORZ691-WAZ691-111130-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....64-69.
* MAX HUMIDITY........44-59 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
SOUTHWEST 2 TO 5 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (48-180) DECREASING TO POOR (25-52)
AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....97-102...EXCEPT 92-97 RIDGES.
* MIN HUMIDITY........16-21 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 5 MPH SHIFTING TO THE NORTH
2 TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-72) INCREASING TO FAIR (207-405) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........CLEAR.
* MIN TEMPERATURE.....65-71.
* MAX HUMIDITY........39-53 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (104-234) DECREASING TO POOR
(25-56) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....96-102.
* MIN HUMIDITY........16-21 PERCENT.
* 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.......10500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-67) INCREASING TO FAIR (346-478) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 63 TO 71. HIGHS 86 TO 95. WEST WINDS
8 TO 14 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 54 TO 60. HIGHS 80 TO 86. WEST
WINDS 9 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 54 TO 60. HIGHS 78 TO 85. SOUTHWEST
WINDS 5 TO 11 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
56 TO 61. HIGHS 79 TO 86. SOUTHWEST WINDS 4 TO 9 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 56 TO 61. HIGHS 79 TO 86. WEST
WINDS 3 TO 8 MPH.
ORZ692-WAZ692-111130-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....58-67.
* MAX HUMIDITY........46-61 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
SOUTHEAST 1 TO 5 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
NORTHWEST 2 TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH SHIFTING TO THE SOUTHWEST
AFTER MIDNIGHT.
* VENTILATION INDEX...POOR TO FAIR (89-201) DECREASING TO POOR
(25-53) AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....88-97...EXCEPT 81-87 RIDGES.
* MIN HUMIDITY........19-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 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.......10000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (28-86) INCREASING TO FAIR TO GOOD
(354-500) IN THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....60-69.
* MAX HUMIDITY........36-51 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST 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.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (86-162) DECREASING TO POOR (25-41)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....88-98...EXCEPT 82-87 RIDGES.
* MIN HUMIDITY........18-23 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 2 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......12500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-48) INCREASING TO FAIR TO EXCELLENT
(474-756) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 58 TO 67. HIGHS 79 TO 90. SOUTHWEST
WINDS 5 TO 11 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 50 TO 58. HIGHS 71 TO 81. WEST
WINDS 5 TO 11 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 48 TO 56. HIGHS 70 TO 81. SOUTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 50 TO 58. HIGHS 71 TO 81. WEST
WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 51 TO 58. HIGHS 71 TO 82. WEST
WINDS 2 TO 7 MPH.
ORZ693-WAZ693-111130-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....56-65.
* MAX HUMIDITY........51-66 PERCENT...EXCEPT 48-55 PERCENT RIDGES.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 1 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH SHIFTING TO THE SOUTHWEST
AFTER MIDNIGHT.
* VENTILATION INDEX...POOR TO FAIR (168-288) DECREASING TO POOR
(25-62) AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....88-97...EXCEPT 82-89 RIDGES.
* MIN HUMIDITY........16-21 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 2 TO 5 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-78) INCREASING TO FAIR (347-463) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....58-68.
* MAX HUMIDITY........41-56 PERCENT...EXCEPT 40-45 PERCENT RIDGES.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 5 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE WEST AFTER
MIDNIGHT.
* VENTILATION INDEX...POOR (111-195) DECREASING TO POOR (25-42)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....89-99...EXCEPT 84-91 RIDGES.
* MIN HUMIDITY........15-20 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 2 TO 5 MPH SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......15000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH INCREASING TO WEST
AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-62) INCREASING TO GOOD TO EXCELLENT
(695-985) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 56 TO 66. HIGHS 83 TO 93. WEST
WINDS 3 TO 8 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 49 TO 59. HIGHS 75 TO 85. WEST
WINDS 4 TO 9 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 47 TO 57. HIGHS 75 TO 85. WEST WINDS
2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 49 TO 58. HIGHS 75 TO 84. WEST
WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 49 TO 58. HIGHS 75 TO 85. WEST
WINDS 1 TO 6 MPH.
ORZ701-111130-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....63-69.
* MAX HUMIDITY........46-61 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH. IN THE
EASTERN COLUMBIA RIVER GORGE, DRAINAGE WINDS LESS THAN 5 MPH
BECOMING WEST 2 TO 7 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (90-164) DECREASING TO POOR (27-63)
AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....96-101.
* MIN HUMIDITY........18-24 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH. IN THE EASTERN
COLUMBIA RIVER GORGE, UPSLOPE LESS THAN 5 MPH BECOMING NORTH
2 TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE NORTH IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (25-44) INCREASING TO POOR (47-161) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....64-69.
* MAX HUMIDITY........46-61 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 6 MPH...EXCEPT WEST 2
TO 7 MPH IN THE EASTERN COLUMBIA RIVER GORGE.
* 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...POOR TO FAIR (164-272) DECREASING TO POOR
(28-82) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....94-99.
* MIN HUMIDITY........21-32 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 6 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-67) INCREASING TO FAIR (352-456) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
NOT AS WARM. CLEAR. LOWS 60 TO 66. HIGHS 81 TO 87.
WEST WINDS 7 TO 13 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 51 TO 57. HIGHS 76 TO 82. WEST
WINDS 6 TO 12 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 74 TO 80. WEST
WINDS 5 TO 11 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 54 TO
60. HIGHS 76 TO 81. WEST WINDS 3 TO 8 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 53 TO 59. HIGHS 76 TO 81. WEST
WINDS 3 TO 8 MPH.
ORZ702-111130-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....60-69.
* MAX HUMIDITY........41-54 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.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (69-153) DECREASING TO POOR (25-46)
AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....94-99...EXCEPT 87-94 RIDGES.
* MIN HUMIDITY........18-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-43) INCREASING TO POOR (72-176) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........CLEAR.
* MIN TEMPERATURE.....61-69.
* MAX HUMIDITY........40-55 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.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (84-208) DECREASING TO POOR
(25-52) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....92-99...EXCEPT 84-93 RIDGES.
* MIN HUMIDITY........21-32 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-36) INCREASING TO FAIR (283-435) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
NOT AS WARM. CLEAR. LOWS 55 TO 63. HIGHS 71 TO 86.
WEST WINDS 2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 54. HIGHS 66 TO 81. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
47 TO 54. HIGHS 65 TO 79. WEST WINDS 2 TO 7 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 50 TO
58. HIGHS 66 TO 80. WEST WINDS UP TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 49 TO 56. HIGHS 66 TO 80. WEST
WINDS UP TO 5 MPH.
ORZ695-111130-
EAGLE CAP WILDERNESS-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....58-63...EXCEPT 51-59 RIDGES.
* MAX HUMIDITY........49-62 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (157-321) DECREASING TO POOR
(25-67) AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....84-94...EXCEPT 72-84 RIDGES.
* MIN HUMIDITY........18-26 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.......11000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-65) INCREASING TO FAIR (292-394) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....60-66...EXCEPT 54-62 RIDGES.
* MAX HUMIDITY........39-48 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
NORTHWEST 2 TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (97-181) DECREASING TO POOR (25-55)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-96...EXCEPT 74-86 RIDGES.
* MIN HUMIDITY........17-25 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 WEST 2 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......14000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH INCREASING TO WEST
AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-43) INCREASING TO GOOD TO EXCELLENT
(623-939) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 53 TO 63. HIGHS 74 TO 89. WEST
WINDS 3 TO 8 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 55. HIGHS 67 TO 82. WEST
WINDS 4 TO 9 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 44 TO 53. HIGHS 66 TO 81. NORTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 46 TO 54. HIGHS 66 TO 81. WEST
WINDS 1 TO 6 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 46 TO 55. HIGHS 66 TO 81. WEST
WINDS 1 TO 5 MPH.
ORZ694-111130-
GRANDE RONDE VALLEY OF OREGON-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....56-61.
* MAX HUMIDITY........58-72 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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 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 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (261-327) DECREASING TO POOR (33-61)
AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....94-99.
* MIN HUMIDITY........14-19 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (26-48) INCREASING TO FAIR (364-442) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....58-63.
* MAX HUMIDITY........48-59 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 3 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 3 TO 6 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (188-244) DECREASING TO POOR
(30-54) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....95-100.
* MIN HUMIDITY........14-19 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......12000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (27-47) INCREASING TO GOOD TO EXCELLENT
(557-759) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 58 TO 63. HIGHS 90 TO 95. WEST WINDS
3 TO 8 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 51 TO 56. HIGHS 82 TO 87.
NORTHWEST WINDS 4 TO 9 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 81 TO 86. NORTHWEST
WINDS 3 TO 8 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 81 TO 86.
NORTHWEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS 81 TO 86. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ699-111130-
WESTERN FORESTED BLUE MOUNTAINS-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....55-62.
* MAX HUMIDITY........46-59 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.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (130-252) DECREASING TO POOR
(25-51) AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....88-94...EXCEPT 82-89 RIDGES.
* MIN HUMIDITY........16-23 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-47) INCREASING TO FAIR (304-422) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....58-64.
* MAX HUMIDITY........40-50 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (112-218) DECREASING TO POOR
(25-49) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....89-95...EXCEPT 82-90 RIDGES.
* MIN HUMIDITY........17-22 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-38) INCREASING TO GOOD TO EXCELLENT
(564-896) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 55 TO 61. HIGHS 78 TO 87. WEST WINDS
2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 48 TO 54. HIGHS 71 TO 81. WEST
WINDS 2 TO 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 71 TO 80. WEST WINDS
1 TO 6 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 47 TO 53. HIGHS 71 TO 80. WEST WINDS 1 TO
5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 48 TO 53. HIGHS 71 TO 81. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ696-111130-
JOHN DAY VALLEY-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....59-64.
* MAX HUMIDITY........43-56 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...FAIR (200-320) DECREASING TO POOR (25-50)
AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....92-99...EXCEPT 87-92 RIDGES.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-59) INCREASING TO FAIR (274-410) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........CLEAR.
* MIN TEMPERATURE.....61-67.
* MAX HUMIDITY........39-49 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 1 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 2 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...POOR TO FAIR (167-283) DECREASING TO POOR
(25-65) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....92-100...EXCEPT 87-92 RIDGES.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......14000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-45) INCREASING TO GOOD TO EXCELLENT
(501-819) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 58 TO 63. HIGHS 84 TO 92. WEST WINDS
2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 51 TO 57. HIGHS 77 TO 86. WEST
WINDS 3 TO 8 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 76 TO 85. WEST WINDS
2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 50 TO 56. HIGHS 76 TO 85.
SOUTHWEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS 77 TO 86. WEST
WINDS 1 TO 6 MPH.
ORZ700-111130-
CENTRAL MOUNTAINS OF OREGON-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....54-64.
* MAX HUMIDITY........43-56 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR 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.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (228-334) DECREASING TO POOR (25-41)
AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....93-99...EXCEPT 86-92 RIDGES.
* MIN HUMIDITY........11-16 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 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.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE WEST IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (25-47) INCREASING TO FAIR (313-459) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....56-65.
* MAX HUMIDITY........40-53 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR 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....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (249-421) DECREASING TO POOR (25-47)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....93-98...EXCEPT 86-92 RIDGES.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 1 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......12500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-34) INCREASING TO FAIR TO EXCELLENT
(474-854) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 53 TO 61. HIGHS 85 TO 91. WEST WINDS
3 TO 8 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 47 TO 54. HIGHS 78 TO 84. WEST
WINDS 4 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 44 TO 52. HIGHS 77 TO 83. WEST WINDS
3 TO 8 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 46 TO 54. HIGHS 77 TO 83. WEST
WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 46 TO 53. HIGHS 78 TO 84. WEST
WINDS 2 TO 7 MPH.
ORZ703-111130-
WARM SPRINGS RESERVATION-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....62-67.
* MAX HUMIDITY........41-50 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 1 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
SOUTHWEST 1 TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (146-268) DECREASING TO POOR
(25-41) AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....96-103...EXCEPT 84-94 RIDGES.
* MIN HUMIDITY........13-20 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHEAST 2
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTH WINDS 1 TO 5 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-48) INCREASING TO POOR TO FAIR
(151-269) IN THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........CLEAR.
* MIN TEMPERATURE.....63-68.
* MAX HUMIDITY........42-52 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (207-415) DECREASING TO POOR (25-52)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....94-102...EXCEPT 82-92 RIDGES.
* MIN HUMIDITY........17-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 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.......11500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-45) INCREASING TO FAIR TO GOOD
(355-501) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
NOT AS WARM. CLEAR. LOWS 58 TO 64. HIGHS 78 TO 92.
WEST WINDS 5 TO 11 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 50 TO 56. HIGHS 73 TO 86. WEST
WINDS 6 TO 12 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 54. HIGHS 72 TO 84. WEST
WINDS 4 TO 10 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
53 TO 58. HIGHS 72 TO 85. WEST WINDS 3 TO 8 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 73 TO 85. WEST
WINDS 2 TO 7 MPH.
ORZ704-111130-
NORTHERN DESCHUTES NATIONAL FOREST-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....57-63.
* MAX HUMIDITY........42-50 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 1 TO 5 MPH SHIFTING TO THE
WEST 1 TO 6 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (152-270) DECREASING TO POOR
(25-47) AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....95-102...EXCEPT 82-92 RIDGES.
* MIN HUMIDITY........16-23 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS UP TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-59) INCREASING TO FAIR (313-443) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....58-64.
* MAX HUMIDITY........43-52 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....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.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (183-333) DECREASING TO POOR
(25-50) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....93-99...EXCEPT 79-90 RIDGES.
* MIN HUMIDITY........17-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
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.......11500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-49) INCREASING TO FAIR TO GOOD
(438-600) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 53 TO 59. HIGHS 76 TO 89. WEST WINDS
4 TO 9 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 70 TO 83. WEST
WINDS 4 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 44 TO 50. HIGHS 68 TO 80. WEST
WINDS 3 TO 8 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
47 TO 54. HIGHS 68 TO 81. WEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 48 TO 53. HIGHS 68 TO 81. WEST
WINDS 2 TO 7 MPH.
ORZ705-111130-
SOUTHERN DESCHUTES NATIONAL FOREST-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....51-59.
* MAX HUMIDITY........46-60 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
NORTHEAST 1 TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (195-299) DECREASING TO POOR
(25-45) AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....91-96...EXCEPT 81-89 RIDGES.
* MIN HUMIDITY........15-22 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 1 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-46) INCREASING TO FAIR TO GOOD
(409-531) IN THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....53-60.
* MAX HUMIDITY........48-63 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST 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.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (215-405) DECREASING TO POOR (25-38)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....89-94...EXCEPT 79-88 RIDGES.
* MIN HUMIDITY........14-22 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 1 TO 5
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 1 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......12000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-34) INCREASING TO GOOD TO EXCELLENT
(569-849) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 48 TO 55. HIGHS 77 TO 88. WEST WINDS
2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 71 TO 82. WEST
WINDS 2 TO 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 40 TO 46. HIGHS 70 TO 80. WEST WINDS
2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
43 TO 49. HIGHS 70 TO 80. WEST WINDS 1 TO 6 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 43 TO 49. HIGHS 70 TO 81. SOUTHWEST
WINDS 1 TO 5 MPH.
ORZ697-111130-
CENTRAL BLUE MOUNTAINS-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....52-59.
* 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.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (192-292) DECREASING TO POOR
(25-52) AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....88-93...EXCEPT 82-88 RIDGES.
* MIN HUMIDITY........14-19 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-44) INCREASING TO FAIR (380-476) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....56-61.
* MAX HUMIDITY........40-51 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (104-178) DECREASING TO POOR (25-48)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....89-94...EXCEPT 83-90 RIDGES.
* MIN HUMIDITY........14-19 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 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH INCREASING TO
SOUTHWEST AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-32) INCREASING TO EXCELLENT
(936-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 53 TO 58. HIGHS 80 TO 87. WEST WINDS
2 TO 7 MPH.
THURSDAY
CLEAR. LOWS 46 TO 52. HIGHS 74 TO 81. WEST WINDS 2 TO
7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 73 TO 80. NORTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 45 TO 51. HIGHS 72 TO 79. WEST
WINDS 1 TO 6 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 73 TO 80. WEST
WINDS 1 TO 5 MPH.
ORZ698-111130-
SOUTHERN BLUE MOUNTAINS-
117 PM PDT SUN AUG 10 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....54-59.
* MAX HUMIDITY........49-58 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH.
* VENTILATION INDEX...FAIR (200-294) DECREASING TO POOR (25-54)
AFTER MIDNIGHT.
MONDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....89-94.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-34) INCREASING TO FAIR (385-463) IN
THE AFTERNOON.
MONDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....57-62.
* MAX HUMIDITY........39-48 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (136-194) DECREASING TO POOR (25-50)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....90-97.
* MIN HUMIDITY........10-15 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHWEST 2
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH INCREASING TO
SOUTHWEST AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-36) INCREASING TO EXCELLENT
(831-1033) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 53 TO 59. HIGHS 85 TO 92.
NORTHWEST WINDS 2 TO 7 MPH.
THURSDAY
CLEAR. LOWS 47 TO 53. HIGHS 78 TO 86. NORTHWEST WINDS
3 TO 8 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 44 TO 51. HIGHS 77 TO 85. NORTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 76 TO 83. WEST
WINDS 2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 47 TO 53. HIGHS 77 TO 84. WEST WINDS
2 TO 7 MPH.
8-14 DAY OUTLOOK FOR MONDAY AUGUST 18 THROUGH SUNDAY AUGUST 24
A GREATER CHANCE OF NEAR TO ABOVE NORMAL TEMPERATURES AND BELOW
NORMAL PRECIPITATION.
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