596
FNUS56 KPDT 192124
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
224 PM PDT TUE AUG 19 2025
DISCUSSION
A DRY AND GRADUALLY WARMING PATTERN WILL TAKE HOLD
OF THE REGION THROUGH THE COURSE OF THE WEEK HEADING INTO EARLY
NEXT WEEK. WINDS, HOWEVER, ARE EXPECTED TO BE LIGHT, OUTSIDE OF
THE USUAL BREEZINESS THROUGH THE CASCADE GAPS. CRITICAL CONDITIONS
ARE NOT ANTICIPATED THROUGH THE NEXT WEEK AS A RESULT.
***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.
WAZ695-201115-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....46-54.
* MAX HUMIDITY........72-87 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT EXCELLENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (107-327) DECREASING TO POOR
(25-136) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....69-78...EXCEPT 61-70 RIDGES.
* MIN HUMIDITY........29-44 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.......8500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...POOR (39-193) INCREASING TO FAIR TO GOOD
(269-529) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-52.
* MAX HUMIDITY........50-65 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 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (72-268) DECREASING TO POOR
(25-86) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....76-85...EXCEPT 68-76 RIDGES.
* MIN HUMIDITY........19-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING EAST 1 TO 5
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-53) INCREASING TO POOR TO FAIR
(179-317) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 51 TO 57. HIGHS 76 TO 88. EAST WINDS 2 TO
7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 56 TO 62. HIGHS 80 TO 92. EAST
WINDS 1 TO 5 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 59 TO 65. HIGHS 80 TO 94. WEST WINDS
1 TO 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 57 TO 64. HIGHS 78 TO 92. WEST WINDS
2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 55 TO 62. HIGHS 77 TO 91. NORTHWEST
WINDS 2 TO 7 MPH.
WAZ690-201115-
KITTITAS VALLEY-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....55-60.
* MAX HUMIDITY........58-73 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
* VENTILATION INDEX...FAIR (275-425) DECREASING TO POOR (35-137)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-86...EXCEPT 70-81 RIDGES.
* MIN HUMIDITY........20-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 11 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (89-219) INCREASING TO GOOD TO
EXCELLENT (503-719) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....51-57.
* MAX HUMIDITY........37-52 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
* VENTILATION INDEX...FAIR (231-383) DECREASING TO POOR (31-119)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....82-88...EXCEPT 72-84 RIDGES.
* MIN HUMIDITY........15-20 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH SHIFTING TO THE
EAST 2 TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 3 TO 8 MPH SHIFTING TO THE
NORTHEAST 2 TO 6 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH SHIFTING TO THE EAST IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (27-95) INCREASING TO FAIR (233-351) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 54 TO 62. HIGHS 87 TO 94. NORTH WINDS 3 TO
8 MPH.
SATURDAY
CLEAR. LOWS 60 TO 66. HIGHS 90 TO 98. NORTH WINDS
2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 64 TO 70. HIGHS 92 TO 99. NORTH
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 64 TO 69. HIGHS 92 TO 99. NORTH
WINDS 2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 64 TO 69. HIGHS 91 TO 98. NORTH
WINDS 3 TO 8 MPH.
WAZ694-201115-
YAKAMA ALPINE DISTRICT-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....47-54.
* MAX HUMIDITY........68-83 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 AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (144-280) DECREASING TO POOR
(25-77) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....76-84...EXCEPT 66-78 RIDGES.
* MIN HUMIDITY........21-33 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.......9000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (31-105) INCREASING TO FAIR TO GOOD
(336-510) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....47-54.
* MAX HUMIDITY........46-61 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 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (96-202) DECREASING TO POOR
(25-50) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....81-88...EXCEPT 72-82 RIDGES.
* MIN HUMIDITY........16-23 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING EAST 1 TO 5
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING EAST 2 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-42) INCREASING TO FAIR (200-314) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 53 TO 58. HIGHS 80 TO 93. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 58 TO 64. HIGHS 84 TO 96.
NORTHEAST WINDS 1 TO 6 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 61 TO 66. HIGHS 84 TO 96. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 59 TO 65. HIGHS 83 TO 96. WEST WINDS
1 TO 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 57 TO 64. HIGHS 82 TO 95. WEST
WINDS 1 TO 5 MPH.
ORZ691-WAZ691-201115-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....55-61.
* MAX HUMIDITY........60-75 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (164-312) DECREASING TO POOR
(25-70) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-89.
* MIN HUMIDITY........21-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (58-142) INCREASING TO FAIR TO GOOD
(390-578) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....53-58.
* MAX HUMIDITY........46-61 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (172-304) DECREASING TO POOR
(25-55) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....86-91...EXCEPT 81-87 RIDGES.
* MIN HUMIDITY........14-19 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 2 TO
7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-45) INCREASING TO FAIR (210-310) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 54 TO 60. HIGHS 90 TO 97. NORTHEAST WINDS
3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 58 TO 65. HIGHS 93 TO 99. NORTH
WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 63 TO 68. HIGHS 94 TO 100. NORTH
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 63 TO 68. HIGHS 95 TO 100. WEST
WINDS 2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 63 TO 68. HIGHS 93 TO 99. WEST
WINDS 2 TO 7 MPH.
ORZ692-WAZ692-201115-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR. A SLIGHT CHANCE OF SHOWERS IN
THE EVENING.
* MIN TEMPERATURE.....49-58.
* MAX HUMIDITY........58-73 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 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 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 AROUND 10 MPH.
* VENTILATION INDEX...POOR (73-179) DECREASING TO POOR (25-73)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....74-84...EXCEPT 68-74 RIDGES.
* MIN HUMIDITY........27-35 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (38-118) INCREASING TO FAIR TO GOOD
(328-502) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-57.
* MAX HUMIDITY........49-64 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 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 (104-208) DECREASING TO POOR
(25-48) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....79-88...EXCEPT 73-79 RIDGES.
* MIN HUMIDITY........18-24 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 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.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-40) INCREASING TO POOR TO FAIR
(197-309) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 51 TO 60. HIGHS 82 TO 93. NORTHEAST WINDS
1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 56 TO 64. HIGHS 85 TO 96. EAST
WINDS 1 TO 6 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 61 TO 68. HIGHS 84 TO 95. WEST
WINDS 1 TO 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 60 TO 67. HIGHS 84 TO 95. WEST WINDS
1 TO 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 59 TO 66. HIGHS 82 TO 93. WEST
WINDS 1 TO 5 MPH.
ORZ693-WAZ693-201115-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....49-60.
* MAX HUMIDITY........56-71 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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....NORTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (105-235) DECREASING TO POOR
(25-65) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-87...EXCEPT 72-79 RIDGES.
* MIN HUMIDITY........23-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 2 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (28-86) INCREASING TO FAIR TO GOOD
(389-531) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-58.
* MAX HUMIDITY........55-70 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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 3 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 (154-286) DECREASING TO POOR
(25-57) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....80-89...EXCEPT 74-81 RIDGES.
* MIN HUMIDITY........15-20 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 2 TO
5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 2 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-62) INCREASING TO FAIR (217-345) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 49 TO 58. HIGHS 85 TO 95. NORTHEAST WINDS
1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 54 TO 63. HIGHS 89 TO 98. EAST
WINDS 1 TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 59 TO 68. HIGHS 88 TO 97. NORTHWEST
WINDS 1 TO 6 MPH.
MONDAY
PARTLY CLOUDY. LOWS 58 TO 67. HIGHS 87 TO 96. NORTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 56 TO 66. HIGHS 84 TO 94. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ701-201115-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....52-58.
* MAX HUMIDITY........68-83 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR (219-371) DECREASING TO POOR (31-117)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-86...EXCEPT 76-83 RIDGES.
* MIN HUMIDITY........26-34 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 8 MPH...EXCEPT WEST 4
TO 10 MPH IN THE EASTERN COLUMBIA RIVER GORGE.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (62-182) INCREASING TO FAIR TO GOOD
(405-647) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........45-60 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (174-298) DECREASING TO POOR
(25-76) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....86-91.
* MIN HUMIDITY........16-21 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH. IN THE EASTERN
COLUMBIA RIVER GORGE, UPSLOPE LESS THAN 5 MPH BECOMING EAST 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.......6000 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-36) INCREASING TO FAIR (245-341) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 56 TO 61. HIGHS 91 TO 96. EAST WINDS 2 TO
7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 61 TO 66. HIGHS 94 TO 99.
NORTHEAST WINDS 2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 63 TO 68. HIGHS 94 TO 99. NORTHWEST
WINDS 1 TO 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 61 TO 66. HIGHS 93 TO 98. NORTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 60 TO 65. HIGHS 90 TO 96. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ702-201115-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....46-55.
* MAX HUMIDITY........68-83 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 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.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (97-257) DECREASING TO POOR
(25-76) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-84...EXCEPT 69-78 RIDGES.
* MIN HUMIDITY........26-38 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (33-109) INCREASING TO FAIR (228-412) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-55.
* MAX HUMIDITY........40-55 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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....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 (66-188) DECREASING TO POOR (25-43)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....84-89...EXCEPT 76-84 RIDGES.
* MIN HUMIDITY........17-23 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.......5500 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-36) INCREASING TO POOR TO FAIR
(197-325) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 55 TO 61. HIGHS 81 TO 93. EAST WINDS UP TO
5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 60 TO 66. HIGHS 84 TO 96. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 61 TO 68. HIGHS 84 TO 97. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 58 TO 65. HIGHS 83 TO 96. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 56 TO 64. HIGHS 80 TO 95. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ695-201115-
EAGLE CAP WILDERNESS-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....51-57...EXCEPT 46-54 RIDGES.
* MAX HUMIDITY........55-67 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 7 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 AROUND 10 MPH.
* VENTILATION INDEX...POOR (54-198) DECREASING TO POOR (25-89)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....73-86...EXCEPT 64-76 RIDGES.
* MIN HUMIDITY........22-36 PERCENT.
* 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.......9500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-104) INCREASING TO FAIR TO GOOD
(344-530) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-56...EXCEPT 43-51 RIDGES.
* MAX HUMIDITY........52-66 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 7 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 AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (111-293) DECREASING TO POOR
(25-83) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....77-88...EXCEPT 67-78 RIDGES.
* MIN HUMIDITY........16-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 1 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-84) INCREASING TO FAIR (207-313) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 48 TO 56. HIGHS 76 TO 91. NORTH WINDS 2 TO
7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 55 TO 62. HIGHS 79 TO 94. NORTH
WINDS 1 TO 6 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 57 TO 66. HIGHS 78 TO 93. NORTHWEST
WINDS 1 TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 55 TO 65. HIGHS 75 TO 90. NORTHWEST
WINDS 1 TO 5 MPH.
TUESDAY
A SLIGHT CHANCE OF SHOWERS. MOSTLY CLEAR. LOWS 52 TO
62. HIGHS 73 TO 88. NORTHWEST WINDS 1 TO 5 MPH.
ORZ694-201115-
GRANDE RONDE VALLEY OF OREGON-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........65-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR (202-290) DECREASING TO POOR (51-109)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-87.
* MIN HUMIDITY........24-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (96-172) INCREASING TO FAIR TO GOOD
(484-668) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....47-52.
* MAX HUMIDITY........61-76 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (218-310) DECREASING TO POOR (40-82)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....86-91.
* MIN HUMIDITY........14-19 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 2 TO
5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 3 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (43-77) INCREASING TO FAIR (307-355) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 49 TO 54. HIGHS 92 TO 97. NORTH WINDS 2 TO
7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 95 TO 100. NORTH
WINDS 1 TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 60 TO 65. HIGHS 94 TO 99. NORTHWEST
WINDS 1 TO 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 60 TO 65. HIGHS 92 TO 97. NORTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 89 TO 94. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ699-201115-
WESTERN FORESTED BLUE MOUNTAINS-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....47-53.
* MAX HUMIDITY........60-72 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 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 (118-248) DECREASING TO POOR
(25-70) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....75-81...EXCEPT 69-76 RIDGES.
* MIN HUMIDITY........25-34 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (29-93) INCREASING TO FAIR TO GOOD
(345-557) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-53.
* MAX HUMIDITY........50-64 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 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 (143-261) DECREASING TO POOR
(25-57) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....80-86...EXCEPT 74-81 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.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-48) INCREASING TO FAIR (201-289) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 50 TO 56. HIGHS 82 TO 92. TERRAIN DRIVEN
WINDS LESS THAN 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 55 TO 61. HIGHS 84 TO 94.
NORTHEAST WINDS 1 TO 6 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
58 TO 64. HIGHS 83 TO 92. NORTHWEST WINDS 1 TO 5 MPH.
MONDAY
A SLIGHT CHANCE OF SHOWERS. MOSTLY CLEAR. LOWS 57 TO
63. HIGHS 82 TO 92. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
A SLIGHT CHANCE OF SHOWERS. MOSTLY CLEAR. LOWS 55 TO
62. HIGHS 80 TO 90. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
ORZ696-201115-
JOHN DAY VALLEY-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-55.
* MAX HUMIDITY........60-70 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...FAIR (214-366) DECREASING TO POOR (25-79)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-85...EXCEPT 72-77 RIDGES.
* MIN HUMIDITY........22-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (37-95) INCREASING TO FAIR TO GOOD
(362-518) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........51-62 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 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...FAIR (204-334) DECREASING TO POOR (25-59)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....83-91...EXCEPT 78-83 RIDGES.
* MIN HUMIDITY........13-18 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.......8500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-51) INCREASING TO POOR TO FAIR
(157-281) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 53 TO 58. HIGHS 89 TO 98. NORTHEAST WINDS
1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 90 TO 99.
NORTHEAST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 61 TO 66. HIGHS 89 TO 97. NORTH
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 60 TO 65. HIGHS 88 TO 97. NORTHEAST
WINDS 1 TO 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 59 TO 64. HIGHS 86 TO 95. NORTHWEST
WINDS 1 TO 5 MPH.
ORZ700-201115-
CENTRAL MOUNTAINS OF OREGON-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-52.
* MAX HUMIDITY........64-78 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE 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 15 MPH DECREASING TO AROUND
5 MPH AFTER MIDNIGHT.
* VENTILATION INDEX...FAIR (261-445) DECREASING TO POOR (25-53)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-84...EXCEPT 71-77 RIDGES.
* MIN HUMIDITY........21-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (29-63) INCREASING TO FAIR TO GOOD
(363-509) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-53.
* MAX HUMIDITY........53-68 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 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 (249-399) DECREASING TO POOR (25-53)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....85-90...EXCEPT 78-84 RIDGES.
* MIN HUMIDITY........14-19 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHEAST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-35) INCREASING TO POOR TO FAIR
(196-340) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 48 TO 56. HIGHS 90 TO 96. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 53 TO 61. HIGHS 90 TO 96. NORTH
WINDS 3 TO 8 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 56 TO 63. HIGHS 90 TO 96. NORTH
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 55 TO 63. HIGHS 88 TO 95. NORTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 55 TO 62. HIGHS 85 TO 93. WEST
WINDS 2 TO 7 MPH.
ORZ703-201115-
WARM SPRINGS RESERVATION-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........66-78 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...POOR TO FAIR (193-337) DECREASING TO POOR
(25-65) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-87...EXCEPT 67-76 RIDGES.
* MIN HUMIDITY........23-31 PERCENT...EXCEPT 32-47 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (37-97) INCREASING TO FAIR (338-464) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........47-59 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....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...POOR TO FAIR (137-287) DECREASING TO POOR
(25-39) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....84-91...EXCEPT 74-83 RIDGES.
* MIN HUMIDITY........16-22 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHEAST 2
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING EAST 2 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-30) INCREASING TO FAIR (263-345) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 56 TO 61. HIGHS 86 TO 96. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 60 TO 65. HIGHS 88 TO 97. NORTH
WINDS 4 TO 9 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 63 TO 68. HIGHS 89 TO 98. NORTHWEST
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 60 TO 65. HIGHS 88 TO 98. NORTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 58 TO 64. HIGHS 86 TO 96. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ704-201115-
NORTHERN DESCHUTES NATIONAL FOREST-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....44-50.
* MAX HUMIDITY........66-79 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 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.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (147-319) DECREASING TO POOR
(25-55) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-85...EXCEPT 66-76 RIDGES.
* MIN HUMIDITY........25-31 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 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 5 TO 10 MPH.
* VENTILATION INDEX...POOR (30-78) INCREASING TO FAIR (331-463) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-51.
* MAX HUMIDITY........57-70 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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.....NORTHWEST AROUND 5 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
* VENTILATION INDEX...POOR TO FAIR (109-239) DECREASING TO POOR
(25-38) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....85-91...EXCEPT 73-82 RIDGES.
* MIN HUMIDITY........20-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING EAST 2 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-39) INCREASING TO FAIR (262-358) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 51 TO 56. HIGHS 82 TO 94. NORTHEAST WINDS
4 TO 9 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 84 TO 96. NORTH
WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 57 TO 62. HIGHS 83 TO 97. NORTHWEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 82 TO 96. NORTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 79 TO 93. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ705-201115-
SOUTHERN DESCHUTES NATIONAL FOREST-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....40-47.
* MAX HUMIDITY........75-88 PERCENT...EXCEPT 62-77 PERCENT RIDGES.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD 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 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 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (152-360) DECREASING TO POOR
(25-37) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....76-81...EXCEPT 66-74 RIDGES.
* MIN HUMIDITY........24-36 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-44) INCREASING TO FAIR (378-496) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....42-49.
* MAX HUMIDITY........65-80 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE 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....NORTH WINDS 1 TO 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 (171-375) DECREASING TO POOR
(25-50) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....83-88...EXCEPT 73-82 RIDGES.
* MIN HUMIDITY........16-25 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.......9500 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-38) INCREASING TO FAIR TO GOOD
(388-510) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 45 TO 54. HIGHS 86 TO 95. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 49 TO 57. HIGHS 85 TO 94. NORTH
WINDS 1 TO 6 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 51 TO 59. HIGHS 84 TO 93. NORTHWEST
WINDS 1 TO 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 50 TO 58. HIGHS 82 TO 91. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 50 TO 56. HIGHS 79 TO 87. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ697-201115-
CENTRAL BLUE MOUNTAINS-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-51.
* MAX HUMIDITY........60-74 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (196-290) DECREASING TO POOR
(25-81) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....76-81...EXCEPT 71-78 RIDGES.
* MIN HUMIDITY........22-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 3
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (35-109) INCREASING TO FAIR TO GOOD
(436-668) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....44-51.
* MAX HUMIDITY........54-69 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE 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 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH.
* VENTILATION INDEX...FAIR (209-343) DECREASING TO POOR (25-74)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....81-86...EXCEPT 76-82 RIDGES.
* MIN HUMIDITY........13-18 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.....NORTHEAST AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-56) INCREASING TO FAIR (263-401) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 48 TO 54. HIGHS 84 TO 92. TERRAIN DRIVEN
WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 54 TO 60. HIGHS 85 TO 92. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
56 TO 61. HIGHS 83 TO 90. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 54 TO
60. HIGHS 81 TO 89. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
53 TO 59. HIGHS 77 TO 85. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
ORZ698-201115-
SOUTHERN BLUE MOUNTAINS-
224 PM PDT TUE AUG 19 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-52.
* MAX HUMIDITY........54-69 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
NORTHWEST 2 TO 6 MPH AFTER MIDNIGHT.
* 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...FAIR (224-298) DECREASING TO POOR (31-93)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-86.
* MIN HUMIDITY........17-23 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 3
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (56-120) INCREASING TO GOOD TO EXCELLENT
(551-705) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-52.
* MAX HUMIDITY........58-72 PERCENT...EXCEPT 54-61 PERCENT RIDGES.
* 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 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...FAIR (321-409) DECREASING TO POOR (29-81)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....83-88.
* MIN HUMIDITY........11-16 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.....NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-49) INCREASING TO POOR TO FAIR
(185-359) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 55. HIGHS 89 TO 95. NORTHEAST
WINDS 2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 55 TO 60. HIGHS 88 TO 95. EAST
WINDS 1 TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 56 TO 62. HIGHS 87 TO 93. NORTHWEST
WINDS 1 TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 56 TO 61. HIGHS 85 TO 91. NORTH
WINDS 1 TO 5 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
54 TO 59. HIGHS 82 TO 87. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
.8-14 DAY OUTLOOK FOR WEDNESDAY AUGUST 27 THROUGH TUESDAY SEPTEMBER 2...
A GREATER CHANCE OF ABOVE-NORMAL TEMPERATURES AND ABOVE-NORMAL
PRECIPITATION.
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