787
FNUS56 KPDT 212048
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
148 PM PDT MON JUL 21 2025
..WET THUNDERSTORMS TODAY AND TUESDAY
DISCUSSION
A LOW-PRESSURE SYSTEM OVER THE PACIFIC NORTHWEST
WILL FACILITATE A 20-40% CHANCE OF THUNDERSTORMS OVER THE EASTERN
MOUNTAINS AND CASCADE EAST SLOPES WITH LOWER (10-25%) CHANCES
ALONG THE BLUE MOUNTAIN FOOTHILLS THROUGH THIS EVENING. SHOWER
AND THUNDERSTORM ACTIVITY WILL BECOME MORE ISOLATED FOR THE
AFOREMENTIONED AREAS TUESDAY AFTERNOON AS THE LOW DEPARTS TO THE
EAST.
***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.
WAZ695-221130-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING.
* MIN TEMPERATURE.....47-54.
* MAX HUMIDITY........80-95 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 1 TO 6 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (106-240) DECREASING TO POOR
(32-100) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....71-81...EXCEPT 63-71 RIDGES.
* MIN HUMIDITY........42-55 PERCENT...EXCEPT 52-67 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 TO 6 MPH.
* CWR.................10 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (61-149) INCREASING TO FAIR (249-419) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-56.
* MAX HUMIDITY........72-87 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT EXCELLENT RIDGES.
* 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...POOR TO FAIR (158-350) DECREASING TO POOR
(25-81) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-85...EXCEPT 68-76 RIDGES.
* MIN HUMIDITY........32-47 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.......10500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (29-71) INCREASING TO FAIR TO GOOD
(343-545) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 50 TO 57. HIGHS 69 TO 83. WEST WINDS 2 TO
7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 55. HIGHS 66 TO 80. WEST WINDS
4 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 46 TO 53. HIGHS 66 TO 80. WEST
WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 47 TO 54. HIGHS 67 TO 82. WEST WINDS
2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 47 TO 54. HIGHS 70 TO 84. WEST WINDS
2 TO 7 MPH.
WAZ690-221130-
KITTITAS VALLEY-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING.
* MIN TEMPERATURE.....54-60.
* MAX HUMIDITY........72-87 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 6 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (160-284) DECREASING TO POOR
(33-95) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.....80-87...EXCEPT 68-81 RIDGES.
* MIN HUMIDITY........37-44 PERCENT...EXCEPT 42-57 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 TO 5 MPH.
* CWR.................10 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (82-160) INCREASING TO FAIR (320-440) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....57-63.
* MAX HUMIDITY........65-80 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...FAIR (247-403) DECREASING TO POOR (38-106)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-93...EXCEPT 75-88 RIDGES.
* MIN HUMIDITY........25-32 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTH 1 TO
5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 TO 6 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.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (39-87) INCREASING TO FAIR TO GOOD
(451-615) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 59 TO 65. HIGHS 86 TO 94. WEST WINDS 4 TO
10 MPH.
FRIDAY
CLEAR. LOWS 58 TO 63. HIGHS 82 TO 91. NORTHWEST WINDS
7 TO 13 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 82 TO 90.
NORTHWEST WINDS 7 TO 13 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 83 TO 91. WEST WINDS
5 TO 11 MPH.
MONDAY
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 86 TO 94. NORTHWEST
WINDS 4 TO 9 MPH.
WAZ694-221130-
YAKAMA ALPINE DISTRICT-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.....47-54.
* MAX HUMIDITY........80-95 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 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.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (132-234) DECREASING TO POOR
(25-52) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....76-84...EXCEPT 66-78 RIDGES.
* MIN HUMIDITY........36-47 PERCENT...EXCEPT 45-60 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................10 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (37-81) INCREASING TO FAIR (205-327) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....51-59.
* MAX HUMIDITY........70-85 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (111-209) DECREASING TO POOR
(25-50) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-90...EXCEPT 72-83 RIDGES.
* MIN HUMIDITY........26-40 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 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 (25-46) INCREASING TO FAIR (370-480) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 52 TO 59. HIGHS 75 TO 89. WEST WINDS 2 TO
7 MPH.
FRIDAY
CLEAR. LOWS 49 TO 57. HIGHS 73 TO 86. WEST WINDS 4 TO
9 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 47 TO 55. HIGHS 73 TO 86. WEST
WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 48 TO 55. HIGHS 73 TO 86. WEST WINDS
2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 49 TO 57. HIGHS 77 TO 90. WEST WINDS
2 TO 7 MPH.
ORZ691-WAZ691-221130-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS IN
THE EVENING.
* MIN TEMPERATURE.....54-59.
* MAX HUMIDITY........75-90 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 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.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (187-361) DECREASING TO POOR
(26-50) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY. A SLIGHT CHANCE OF SHOWERS IN
THE AFTERNOON.
* MAX TEMPERATURE.....83-89...EXCEPT 78-84 RIDGES.
* MIN HUMIDITY........28-37 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 6 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (65-131) INCREASING TO FAIR TO GOOD
(374-544) IN THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....58-63.
* MAX HUMIDITY........64-79 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 6 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 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (152-344) DECREASING TO POOR
(25-53) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....88-94.
* MIN HUMIDITY........21-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (29-77) INCREASING TO FAIR TO GOOD
(434-606) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 60 TO 65. HIGHS 88 TO 96. WEST WINDS 5 TO
11 MPH.
FRIDAY
CLEAR. LOWS 58 TO 65. HIGHS 85 TO 94. WEST WINDS 7 TO
13 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 84 TO 91. WEST
WINDS 5 TO 11 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 57 TO 63. HIGHS 85 TO 92. WEST WINDS
4 TO 9 MPH.
MONDAY
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 88 TO 95. WEST WINDS
3 TO 8 MPH.
ORZ692-WAZ692-221130-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.....47-55.
* MAX HUMIDITY........81-96 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (64-148) DECREASING TO POOR (25-45)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....73-83...EXCEPT 66-71 RIDGES.
* MIN HUMIDITY........34-48 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.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (64-126) INCREASING TO FAIR (348-474) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....51-60.
* MAX HUMIDITY........65-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (109-173) DECREASING TO POOR (25-41)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-89...EXCEPT 72-78 RIDGES.
* MIN HUMIDITY........26-34 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-59) INCREASING TO FAIR TO GOOD
(402-520) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 54 TO 62. HIGHS 78 TO 89. SOUTHWEST WINDS
2 TO 7 MPH.
FRIDAY
CLEAR. LOWS 53 TO 61. HIGHS 76 TO 88. SOUTHWEST WINDS
3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 52 TO 60. HIGHS 76 TO 86. WEST
WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 52 TO 60. HIGHS 76 TO 87. WEST
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 53 TO 61. HIGHS 79 TO 90. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ693-WAZ693-221130-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.....45-55.
* MAX HUMIDITY........82-97 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................10 PERCENT.
* CHC OF LIGHTNING....30 PERCENT (CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (36-78) DECREASING TO POOR (25-44) AFTER
MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....72-81...EXCEPT 66-73 RIDGES.
* MIN HUMIDITY........34-43 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (53-97) INCREASING TO FAIR (368-468) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-58.
* MAX HUMIDITY........70-85 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (99-155) DECREASING TO POOR (25-40)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-87...EXCEPT 72-80 RIDGES.
* MIN HUMIDITY........22-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-51) INCREASING TO FAIR TO GOOD
(418-522) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 51 TO 62. HIGHS 82 TO 92. WEST WINDS 1 TO
5 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 50 TO 60. HIGHS 81 TO 91. WEST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 52 TO 61. HIGHS 80 TO 89. WEST
WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 51 TO 61. HIGHS 80 TO 90. NORTHWEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 52 TO 62. HIGHS 84 TO 93. NORTH
WINDS 1 TO 5 MPH.
ORZ701-221130-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....52-57.
* MAX HUMIDITY........76-91 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 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...FAIR (263-389) DECREASING TO POOR (36-94)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-87.
* MIN HUMIDITY........33-41 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 7 MPH IN THE AFTERNOON. IN THE EASTERN COLUMBIA RIVER
GORGE, WEST WINDS 2 TO 7 MPH.
* 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.......8500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (60-150) INCREASING TO FAIR (315-449) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....56-61.
* MAX HUMIDITY........66-81 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...FAIR (274-408) DECREASING TO POOR (36-92)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....88-93...EXCEPT 83-88 RIDGES.
* MIN HUMIDITY........27-34 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WINDS NORTHWEST 1 TO 6 MPH IN THE AFTERNOON.
UPSLOPE LESS THAN 5 MPH. IN THE EASTERN COLUMBIA RIVER GORGE,
WINDS WEST 2 TO 7 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.......9500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (30-104) INCREASING TO FAIR (375-465) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 57 TO 62. HIGHS 85 TO 90. WEST WINDS 4 TO
9 MPH.
FRIDAY
CLEAR. LOWS 54 TO 60. HIGHS 82 TO 87. WEST WINDS 6 TO
12 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 53 TO 59. HIGHS 81 TO 86. WEST
WINDS 5 TO 11 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 53 TO 58. HIGHS 82 TO 87. WEST WINDS
3 TO 8 MPH.
MONDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 85 TO 90. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ702-221130-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-55.
* MAX HUMIDITY........76-91 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (119-253) DECREASING TO POOR
(25-58) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-85...EXCEPT 71-80 RIDGES.
* MIN HUMIDITY........34-47 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (36-86) INCREASING TO POOR TO FAIR
(186-310) IN THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....51-60.
* MAX HUMIDITY........62-77 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (119-265) DECREASING TO POOR
(25-56) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-90...EXCEPT 77-85 RIDGES.
* MIN HUMIDITY........28-39 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-56) INCREASING TO FAIR (275-403) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 52 TO 60. HIGHS 74 TO 89. WEST WINDS 1 TO
6 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 58. HIGHS 71 TO 86. WEST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 49 TO 57. HIGHS 71 TO 85. WEST
WINDS 2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 48 TO 55. HIGHS 72 TO 85. WEST WINDS
2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 49 TO 56. HIGHS 75 TO 89. NORTHWEST
WINDS 1 TO 5 MPH.
ORZ695-221130-
EAGLE CAP WILDERNESS-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.....46-53...EXCEPT 39-47 RIDGES.
* MAX HUMIDITY........83-98 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....30 PERCENT (CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (43-87) DECREASING TO POOR (25-58) AFTER
MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....68-79...EXCEPT 57-68 RIDGES.
* MIN HUMIDITY........32-47 PERCENT...EXCEPT 45-60 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (44-90) INCREASING TO FAIR (259-435) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....50-57...EXCEPT 43-51 RIDGES.
* MAX HUMIDITY........67-82 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (85-179) DECREASING TO POOR (25-59)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....75-85...EXCEPT 63-74 RIDGES.
* MIN HUMIDITY........26-39 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-53) INCREASING TO FAIR (303-439) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS 49 TO 58. HIGHS 72 TO 87.
NORTHWEST WINDS 1 TO 5 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 57. HIGHS 71 TO 86. WEST WINDS
1 TO 6 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 49 TO 57. HIGHS 70 TO 85.
NORTHWEST WINDS 1 TO 6 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 48 TO 57. HIGHS 70 TO 85. NORTHWEST
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 49 TO 58. HIGHS 74 TO 89. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ694-221130-
GRANDE RONDE VALLEY OF OREGON-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.....47-52.
* MAX HUMIDITY........91-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (77-111) DECREASING TO POOR (35-59)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....78-83.
* MIN HUMIDITY........36-41 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 3 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (66-114) INCREASING TO FAIR (418-458) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........78-93 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST 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.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR TO FAIR (185-225) DECREASING TO POOR
(37-57) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....83-88.
* MIN HUMIDITY........24-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (28-50) INCREASING TO FAIR (363-445) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 53 TO 58. HIGHS 87 TO 92. NORTHWEST WINDS
1 TO 5 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 53 TO 58. HIGHS 86 TO 91. NORTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 85 TO 90.
NORTHWEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 53 TO 58. HIGHS 85 TO 90. NORTHWEST
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 88 TO 93. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ699-221130-
WESTERN FORESTED BLUE MOUNTAINS-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.....44-50.
* MAX HUMIDITY........84-99 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (68-222) DECREASING TO POOR
(25-52) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....73-79...EXCEPT 66-73 RIDGES.
* MIN HUMIDITY........31-44 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (36-90) INCREASING TO FAIR (321-447) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-55.
* MAX HUMIDITY........68-83 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (115-233) DECREASING TO POOR
(25-44) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-85...EXCEPT 72-80 RIDGES.
* MIN HUMIDITY........23-32 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.......10500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-45) INCREASING TO FAIR TO GOOD
(403-515) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 51 TO 58. HIGHS 78 TO 87. TERRAIN DRIVEN
WINDS LESS THAN 5 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 50 TO 56. HIGHS 76 TO 86. WEST WINDS
1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 75 TO 84.
NORTHWEST WINDS UP TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 49 TO 55. HIGHS 75 TO 84. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 50 TO 56. HIGHS 78 TO 87. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ696-221130-
JOHN DAY VALLEY-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR. A SLIGHT CHANCE OF SHOWERS IN
THE EVENING.
* MIN TEMPERATURE.....47-53.
* MAX HUMIDITY........77-92 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 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.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (199-381) DECREASING TO POOR
(27-63) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....76-84...EXCEPT 71-76 RIDGES.
* MIN HUMIDITY........24-32 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.......10500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (42-78) INCREASING TO FAIR TO GOOD
(388-504) IN THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....51-58.
* MAX HUMIDITY........62-76 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (214-322) DECREASING TO POOR (25-55)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-90...EXCEPT 78-83 RIDGES.
* MIN HUMIDITY........20-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-36) INCREASING TO FAIR TO GOOD
(413-527) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 84 TO 92.
NORTHWEST WINDS 1 TO 6 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 82 TO 91. WEST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 52 TO 58. HIGHS 80 TO 88.
NORTHWEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 52 TO 58. HIGHS 80 TO 89. NORTHWEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 52 TO 58. HIGHS 84 TO 92. NORTHWEST
WINDS 1 TO 5 MPH.
ORZ700-221130-
CENTRAL MOUNTAINS OF OREGON-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....42-50.
* MAX HUMIDITY........79-94 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 3 TO 8 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 7 MPH 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...FAIR TO GOOD (363-519) DECREASING TO POOR
(25-55) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-84...EXCEPT 70-76 RIDGES.
* MIN HUMIDITY........22-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (30-54) INCREASING TO FAIR (326-462) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....47-55.
* MAX HUMIDITY........64-78 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH.
* VENTILATION INDEX...FAIR (305-485) DECREASING TO POOR (25-49)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....83-90...EXCEPT 77-82 RIDGES.
* MIN HUMIDITY........18-24 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.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-33) INCREASING TO FAIR (353-465) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS 49 TO 58. HIGHS 84 TO 92.
NORTHWEST WINDS 2 TO 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 50 TO 56. HIGHS 83 TO 89. WEST WINDS
3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 47 TO 55. HIGHS 81 TO 87.
NORTHWEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 46 TO 54. HIGHS 81 TO 87. NORTHWEST
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 47 TO 54. HIGHS 84 TO 90. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ703-221130-
WARM SPRINGS RESERVATION-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-54.
* MAX HUMIDITY........73-86 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT EXCELLENT RIDGES.
* 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.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...FAIR (208-368) DECREASING TO POOR (27-55)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-88...EXCEPT 68-78 RIDGES.
* MIN HUMIDITY........26-35 PERCENT...EXCEPT 37-52 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (40-74) INCREASING TO FAIR (258-332) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....53-58.
* MAX HUMIDITY........61-74 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 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.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...FAIR (211-361) DECREASING TO POOR (26-52)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....86-93...EXCEPT 74-83 RIDGES.
* MIN HUMIDITY........21-29 PERCENT...EXCEPT 29-44 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (26-46) INCREASING TO FAIR (292-356) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 55 TO 60. HIGHS 81 TO 94. WEST WINDS 2 TO
7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 52 TO 58. HIGHS 78 TO 91. WEST WINDS
5 TO 11 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 51 TO 57. HIGHS 77 TO 90. WEST
WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 78 TO 90. WEST WINDS
2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 51 TO 56. HIGHS 81 TO 93. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ704-221130-
NORTHERN DESCHUTES NATIONAL FOREST-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....42-49.
* MAX HUMIDITY........78-93 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...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.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (183-321) DECREASING TO POOR
(25-48) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-85...EXCEPT 65-76 RIDGES.
* MIN HUMIDITY........28-36 PERCENT...EXCEPT 38-53 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE NORTHWEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (28-50) INCREASING TO FAIR (229-299) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....47-54.
* MAX HUMIDITY........65-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 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.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (165-303) DECREASING TO POOR
(25-49) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-91...EXCEPT 71-82 RIDGES.
* MIN HUMIDITY........24-31 PERCENT...EXCEPT 32-47 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-43) INCREASING TO FAIR (289-377) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS 49 TO 55. HIGHS 76 TO 90. WEST
WINDS 2 TO 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 74 TO 88. WEST WINDS
3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 72 TO 86. WEST
WINDS 2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 72 TO 86. WEST WINDS
2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 47 TO 52. HIGHS 76 TO 90. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ705-221130-
SOUTHERN DESCHUTES NATIONAL FOREST-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....40-45.
* MAX HUMIDITY........90-100 PERCENT...EXCEPT 78-93 PERCENT RIDGES.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 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...FAIR (203-415) DECREASING TO POOR (25-44)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....75-81...EXCEPT 65-73 RIDGES.
* MIN HUMIDITY........27-35 PERCENT...EXCEPT 32-47 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-42) INCREASING TO FAIR (222-348) IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....44-50.
* MAX HUMIDITY........76-89 PERCENT...EXCEPT 64-79 PERCENT RIDGES.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST 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.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (196-398) DECREASING TO POOR
(25-47) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-86...EXCEPT 70-79 RIDGES.
* MIN HUMIDITY........23-35 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-26) INCREASING TO FAIR (280-388) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 77 TO 87. WEST
WINDS UP TO 5 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 76 TO 85. WEST WINDS
2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 43 TO 49. HIGHS 73 TO 82. WEST
WINDS 1 TO 6 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 42 TO 48. HIGHS 73 TO 83. WEST WINDS
1 TO 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 77 TO 87. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ697-221130-
CENTRAL BLUE MOUNTAINS-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.....42-48.
* MAX HUMIDITY........85-100 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (85-215) DECREASING TO POOR
(25-55) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....72-77...EXCEPT 66-73 RIDGES.
* MIN HUMIDITY........27-36 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (49-91) INCREASING TO FAIR TO GOOD
(393-509) IN THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-52.
* MAX HUMIDITY........68-83 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR TO FAIR (117-239) DECREASING TO POOR
(25-47) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-83...EXCEPT 72-79 RIDGES.
* MIN HUMIDITY........22-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE WEST IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (25-43) INCREASING TO FAIR TO GOOD
(451-543) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS 49 TO 55. HIGHS 78 TO 85. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 55. HIGHS 77 TO 84. WEST WINDS
1 TO 6 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 48 TO
54. HIGHS 76 TO 82. NORTHWEST WINDS 1 TO 5 MPH.
SUNDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 46 TO
53. HIGHS 76 TO 82. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 48 TO 54. HIGHS 79 TO 87. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ698-221130-
SOUTHERN BLUE MOUNTAINS-
148 PM PDT MON JUL 21 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.....44-50.
* MAX HUMIDITY........79-92 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 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 5 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (135-283) DECREASING TO POOR
(26-62) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....72-77...EXCEPT 67-72 RIDGES.
* MIN HUMIDITY........24-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (52-86) INCREASING TO FAIR TO GOOD
(417-505) IN THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-53.
* MAX HUMIDITY........70-85 PERCENT...EXCEPT 65-74 PERCENT RIDGES.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (155-241) DECREASING TO POOR
(25-51) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-83...EXCEPT 73-78 RIDGES.
* MIN HUMIDITY........19-24 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.....NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-44) INCREASING TO FAIR TO GOOD
(405-511) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS 51 TO 56. HIGHS 82 TO 89. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
A SLIGHT CHANCE OF SHOWERS. MOSTLY CLEAR. LOWS 50 TO
55. HIGHS 81 TO 88. NORTHWEST WINDS 2 TO 7 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 49 TO
55. HIGHS 79 TO 86. NORTHWEST WINDS 1 TO 6 MPH.
SUNDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 48 TO
53. HIGHS 80 TO 86. WEST WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 49 TO 55. HIGHS 83 TO 90. NORTH
WINDS 1 TO 5 MPH.
8-14 DAY OUTLOOK FOR TUESDAY JULY 29 THROUGH MONDAY AUGUST 4
A GREATER CHANCE OF NEAR- TO ABOVE-NORMAL TEMPERATURES AND NEAR-
TO ABOVE-NORMAL PRECIPITATION.
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