304
FNUS56 KPDT 191335
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
635 AM PDT TUE AUG 19 2025
DISCUSSION
A MOSTLY DRY AND BENIGN PATTERN IS EXPECTED THROUGH
THE WEEK EXCEPT FOR THE EASTERN MOUNTAINS OF OREGON WHICH MAY SEE
AN ISOLATED SHOWER TUESDAY AFTERNOON. A GRADUAL WARMING TREND IS
EXPECTED THROUGH THE WEEKEND. BREEZY WINDS WILL PREVAIL AT TIMES
THROUGH THE CASCADE GAPS, MAINLY THROUGH THE FIRST HALF OF THE
WEEK, BUT CRITICAL CONDITIONS ARE NOT ANTICIPATED.
***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.
WAZ695-192315-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....71-80...EXCEPT 63-71 RIDGES.
* MIN HUMIDITY........31-46 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 1 TO 6 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (28-136) INCREASING TO FAIR (264-486) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....48-56...EXCEPT 46-51 RIDGES.
* MAX HUMIDITY........70-85 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 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 (107-325) DECREASING TO POOR
(25-135) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....70-78...EXCEPT 61-70 RIDGES.
* MIN HUMIDITY........33-48 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.......8000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (28-182) INCREASING TO FAIR (206-444) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS 45 TO 52. HIGHS 70 TO 83.
NORTHWEST WINDS 2 TO 7 MPH.
FRIDAY
CLEAR. LOWS 52 TO 57. HIGHS 76 TO 88. EAST WINDS 1 TO
6 MPH.
SATURDAY
CLEAR. LOWS 56 TO 62. HIGHS 80 TO 92. EAST WINDS 1 TO
5 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 57 TO 64. HIGHS 78 TO 92. WEST WINDS
1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 54 TO 62. HIGHS 75 TO 89. NORTHWEST
WINDS 2 TO 7 MPH.
WAZ690-192315-
KITTITAS VALLEY-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....80-88...EXCEPT 70-83 RIDGES.
* MIN HUMIDITY........23-32 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 AROUND 10 MPH.
* VENTILATION INDEX...POOR (59-151) INCREASING TO FAIR TO GOOD
(395-547) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....55-61.
* MAX HUMIDITY........54-69 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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 (281-433) DECREASING TO POOR (36-140)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-87...EXCEPT 71-81 RIDGES.
* MIN HUMIDITY........22-31 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (70-218) INCREASING TO FAIR TO
GOOD (383-585) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 52 TO 58. HIGHS 82 TO 89. NORTHWEST WINDS
5 TO 11 MPH.
FRIDAY
CLEAR. LOWS 55 TO 63. HIGHS 86 TO 93. NORTH WINDS 2 TO
7 MPH.
SATURDAY
CLEAR. LOWS 61 TO 67. HIGHS 91 TO 97. NORTH WINDS
2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 64 TO 69. HIGHS 92 TO 99. NORTH
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 62 TO 67. HIGHS 90 TO 97. NORTHWEST
WINDS 4 TO 9 MPH.
WAZ694-192315-
YAKAMA ALPINE DISTRICT-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....76-85...EXCEPT 67-78 RIDGES.
* MIN HUMIDITY........23-37 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHWEST 2
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTHWEST 2
TO 6 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (34-90) INCREASING TO FAIR TO GOOD
(360-540) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....47-55.
* MAX HUMIDITY........66-81 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 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....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (151-287) DECREASING TO POOR
(25-77) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-85...EXCEPT 66-78 RIDGES.
* MIN HUMIDITY........23-37 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 1 TO 6 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-87) INCREASING TO FAIR (222-360) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 48 TO 54. HIGHS 75 TO 87. NORTH WINDS
2 TO 7 MPH.
FRIDAY
CLEAR. LOWS 53 TO 59. HIGHS 80 TO 92. NORTHEAST WINDS
1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 58 TO 64. HIGHS 84 TO 96.
NORTHEAST WINDS 1 TO 6 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 59 TO 65. HIGHS 84 TO 96. WEST WINDS
1 TO 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 57 TO 63. HIGHS 81 TO 93. WEST WINDS
2 TO 7 MPH.
ORZ691-WAZ691-192315-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-89.
* MIN HUMIDITY........22-29 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.......8000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (39-109) INCREASING TO FAIR (246-402) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....55-61.
* MAX HUMIDITY........57-72 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (142-312) DECREASING TO POOR
(25-74) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-89.
* MIN HUMIDITY........23-29 PERCENT.
* 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.......8500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (43-143) INCREASING TO FAIR (306-478) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 53 TO 58. HIGHS 85 TO 91. NORTHWEST WINDS
3 TO 8 MPH.
FRIDAY
CLEAR. LOWS 55 TO 61. HIGHS 90 TO 96. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 60 TO 66. HIGHS 93 TO 99. NORTH
WINDS 3 TO 8 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 63 TO 68. HIGHS 94 TO 100. WEST
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 62 TO 67. HIGHS 92 TO 98. WEST WINDS
2 TO 7 MPH.
ORZ692-WAZ692-192315-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-87...EXCEPT 72-78 RIDGES.
* MIN HUMIDITY........26-33 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.......7000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-64) INCREASING TO POOR TO FAIR
(134-250) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR. A SLIGHT CHANCE OF SHOWERS IN
THE EVENING.
* MIN TEMPERATURE.....50-58.
* MAX HUMIDITY........54-69 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....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 (61-163) DECREASING TO POOR (25-75)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....75-85...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 6
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 (29-115) INCREASING TO FAIR (244-396) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 50 TO 58. HIGHS 76 TO 87. NORTHWEST WINDS
2 TO 7 MPH.
FRIDAY
CLEAR. LOWS 52 TO 59. HIGHS 82 TO 93. NORTHEAST WINDS
1 TO 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 57 TO 65. HIGHS 85 TO 95. EAST
WINDS 1 TO 6 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 60 TO 67. HIGHS 84 TO 95. WEST WINDS
1 TO 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 59 TO 67. HIGHS 82 TO 93. WEST WINDS
1 TO 5 MPH.
ORZ693-WAZ693-192315-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....83-91...EXCEPT 77-84 RIDGES.
* MIN HUMIDITY........23-29 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.......11000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-74) INCREASING TO POOR TO FAIR
(132-374) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-60.
* MAX HUMIDITY........56-71 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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....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 (98-232) DECREASING TO POOR
(25-68) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-88...EXCEPT 73-80 RIDGES.
* MIN HUMIDITY........24-30 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.......9000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-74) INCREASING TO FAIR (260-380) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 48 TO 58. HIGHS 79 TO 88. NORTHWEST WINDS
2 TO 7 MPH.
FRIDAY
CLEAR. LOWS 50 TO 59. HIGHS 85 TO 94. NORTHEAST WINDS
1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 56 TO 64. HIGHS 89 TO 98. EAST
WINDS 1 TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 59 TO 68. HIGHS 88 TO 97. WEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 57 TO 67. HIGHS 85 TO 95. WEST WINDS
1 TO 6 MPH.
ORZ701-192315-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-86...EXCEPT 76-82 RIDGES.
* MIN HUMIDITY........29-38 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 3 TO 8 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 1 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (33-127) INCREASING TO FAIR (293-493) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....52-58.
* MAX HUMIDITY........66-81 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 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...FAIR (222-376) DECREASING TO POOR (31-117)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-86...EXCEPT 76-83 RIDGES.
* MIN HUMIDITY........28-39 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH...EXCEPT WEST 4 TO 10
MPH IN THE EASTERN COLUMBIA RIVER GORGE.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (47-169) INCREASING TO FAIR TO GOOD
(353-553) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 50 TO 55. HIGHS 85 TO 90. NORTHWEST WINDS
4 TO 9 MPH.
FRIDAY
CLEAR. LOWS 58 TO 63. HIGHS 90 TO 95. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 62 TO 67. HIGHS 93 TO 98. NORTH
WINDS 2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 61 TO 66. HIGHS 92 TO 98. NORTHWEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 60 TO 65. HIGHS 89 TO 95. WEST WINDS
2 TO 7 MPH.
ORZ702-192315-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-84...EXCEPT 70-78 RIDGES.
* MIN HUMIDITY........29-42 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-62) INCREASING TO FAIR (232-370) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-56.
* MAX HUMIDITY........66-81 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....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 (106-270) DECREASING TO POOR
(25-76) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-85...EXCEPT 70-79 RIDGES.
* MIN HUMIDITY........27-42 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (25-97) INCREASING TO POOR TO FAIR
(185-353) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 48 TO 55. HIGHS 76 TO 88. NORTHWEST WINDS
UP TO 5 MPH.
FRIDAY
CLEAR. LOWS 55 TO 61. HIGHS 80 TO 92. TERRAIN DRIVEN
WINDS LESS THAN 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 59 TO 66. HIGHS 84 TO 96. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 58 TO 66. HIGHS 82 TO 96. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 55 TO 63. HIGHS 79 TO 93. WEST WINDS
1 TO 5 MPH.
ORZ695-192315-
EAGLE CAP WILDERNESS-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-92...EXCEPT 70-82 RIDGES.
* MIN HUMIDITY........20-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-70) INCREASING TO FAIR TO EXCELLENT
(312-728) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....51-58...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 TO FAIR (53-201) DECREASING TO POOR
(25-92) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....74-87...EXCEPT 65-77 RIDGES.
* MIN HUMIDITY........23-36 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.......9000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-96) INCREASING TO FAIR (238-416) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 45 TO 55. HIGHS 70 TO 85. NORTH WINDS
2 TO 7 MPH.
FRIDAY
CLEAR. LOWS 49 TO 57. HIGHS 76 TO 91. NORTH WINDS 1 TO
6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 55 TO 63. HIGHS 79 TO 94. NORTH
WINDS 1 TO 6 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 57 TO 65. HIGHS 77 TO 92. WEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 54 TO 64. HIGHS 74 TO 89. WEST WINDS
1 TO 5 MPH.
ORZ694-192315-
GRANDE RONDE VALLEY OF OREGON-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....87-92.
* MIN HUMIDITY........23-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (57-99) INCREASING TO FAIR (230-296) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........62-77 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...POOR TO FAIR (194-290) DECREASING TO POOR
(52-114) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-87.
* MIN HUMIDITY........25-30 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 (80-160) INCREASING TO FAIR TO GOOD
(375-545) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 48 TO 53. HIGHS 86 TO 91. NORTH WINDS
4 TO 10 MPH.
FRIDAY
CLEAR. LOWS 50 TO 55. HIGHS 91 TO 96. NORTH WINDS 2 TO
7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 95 TO 100. NORTH
WINDS 1 TO 5 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 59 TO 64. HIGHS 92 TO 97. NORTHWEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 90 TO 95. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ699-192315-
WESTERN FORESTED BLUE MOUNTAINS-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-87...EXCEPT 74-82 RIDGES.
* MIN HUMIDITY........21-32 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-47) INCREASING TO POOR TO GOOD
(189-563) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-53.
* MAX HUMIDITY........57-68 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 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (107-239) DECREASING TO POOR
(25-73) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....76-82...EXCEPT 70-77 RIDGES.
* MIN HUMIDITY........25-34 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.......9500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-79) INCREASING TO FAIR (238-416) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 47 TO 53. HIGHS 76 TO 85. NORTH WINDS
1 TO 6 MPH.
FRIDAY
CLEAR. LOWS 50 TO 56. HIGHS 82 TO 91. TERRAIN DRIVEN
WINDS LESS THAN 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 56 TO 62. HIGHS 84 TO 93.
NORTHEAST WINDS 1 TO 6 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 58 TO 64. HIGHS 83 TO 92. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 56 TO 62. HIGHS 80 TO 90. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ696-192315-
JOHN DAY VALLEY-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-89...EXCEPT 76-81 RIDGES.
* MIN HUMIDITY........19-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE SOUTHWEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-51) INCREASING TO FAIR TO GOOD
(242-500) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........57-67 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 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 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (209-359) DECREASING TO POOR (25-79)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-86...EXCEPT 73-78 RIDGES.
* MIN HUMIDITY........22-27 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.......8000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (27-79) INCREASING TO FAIR (240-374) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 50 TO 55. HIGHS 82 TO 90. NORTH WINDS
2 TO 7 MPH.
FRIDAY
CLEAR. LOWS 53 TO 58. HIGHS 89 TO 98. NORTHEAST WINDS
1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 89 TO 98.
NORTHEAST WINDS 2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 60 TO 65. HIGHS 89 TO 97. NORTH
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 60 TO 65. HIGHS 86 TO 95. WEST WINDS
1 TO 6 MPH.
ORZ700-192315-
CENTRAL MOUNTAINS OF OREGON-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-86...EXCEPT 75-81 RIDGES.
* MIN HUMIDITY........15-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE SOUTHWEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-35) INCREASING TO FAIR TO GOOD
(284-512) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-52.
* MAX HUMIDITY........64-79 PERCENT...EXCEPT 59-68 PERCENT RIDGES.
* 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 (256-468) DECREASING TO POOR (25-55)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-85...EXCEPT 72-78 RIDGES.
* MIN HUMIDITY........21-28 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.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-52) INCREASING TO FAIR (264-356) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 45 TO 53. HIGHS 84 TO 89. NORTH WINDS
2 TO 7 MPH.
FRIDAY
CLEAR. LOWS 49 TO 57. HIGHS 90 TO 95. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 53 TO 61. HIGHS 90 TO 95. NORTH
WINDS 3 TO 8 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 55 TO 63. HIGHS 89 TO 96. NORTHWEST
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 55 TO 62. HIGHS 87 TO 93. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ703-192315-
WARM SPRINGS RESERVATION-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-88...EXCEPT 68-78 RIDGES.
* MIN HUMIDITY........25-32 PERCENT...EXCEPT 33-48 PERCENT RIDGES.
* 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 BECOMING WEST 1 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-49) INCREASING TO FAIR (246-382) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....53-58...EXCEPT 48-53 RIDGES.
* MAX HUMIDITY........63-75 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 (204-352) DECREASING TO POOR (25-65)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-87...EXCEPT 67-77 RIDGES.
* MIN HUMIDITY........24-32 PERCENT...EXCEPT 32-47 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (27-85) INCREASING TO FAIR (269-375) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 50 TO 55. HIGHS 81 TO 91. NORTHWEST WINDS
2 TO 7 MPH.
FRIDAY
CLEAR. LOWS 57 TO 62. HIGHS 86 TO 95. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 61 TO 66. HIGHS 88 TO 97. NORTH
WINDS 3 TO 8 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 60 TO 65. HIGHS 88 TO 98. NORTHWEST
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 85 TO 96. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ704-192315-
NORTHERN DESCHUTES NATIONAL FOREST-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-86...EXCEPT 67-77 RIDGES.
* MIN HUMIDITY........26-34 PERCENT...EXCEPT 34-49 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 1 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-53) INCREASING TO FAIR (299-439) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....45-50.
* MAX HUMIDITY........65-79 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 15 MPH DECREASING TO AROUND 5 MPH
AFTER MIDNIGHT.
* VENTILATION INDEX...POOR TO FAIR (156-336) DECREASING TO POOR
(25-59) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-85...EXCEPT 67-77 RIDGES.
* MIN HUMIDITY........25-32 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.......8000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-62) INCREASING TO FAIR (274-378) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 46 TO 51. HIGHS 77 TO 89. NORTH WINDS
1 TO 6 MPH.
FRIDAY
CLEAR. LOWS 52 TO 57. HIGHS 81 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
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 83 TO 96. NORTHWEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 80 TO 93. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ705-192315-
SOUTHERN DESCHUTES NATIONAL FOREST-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-83...EXCEPT 68-76 RIDGES.
* MIN HUMIDITY........21-33 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 BECOMING WEST 1 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-45) INCREASING TO FAIR TO GOOD
(420-578) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....40-47.
* MAX HUMIDITY........76-90 PERCENT...EXCEPT 64-79 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 (163-371) DECREASING TO POOR
(25-38) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....76-81...EXCEPT 67-75 RIDGES.
* MIN HUMIDITY........25-37 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-35) INCREASING TO FAIR (275-357) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS 42 TO 49. HIGHS 79 TO 87. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
CLEAR. LOWS 46 TO 54. HIGHS 84 TO 93. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 49 TO 57. HIGHS 84 TO 94. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 51 TO 58. HIGHS 83 TO 92. NORTHWEST
WINDS 1 TO 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 49 TO 57. HIGHS 80 TO 90. NORTHWEST
WINDS 1 TO 5 MPH.
ORZ697-192315-
CENTRAL BLUE MOUNTAINS-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-87...EXCEPT 77-83 RIDGES.
* MIN HUMIDITY........16-21 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH INCREASING TO SOUTH AROUND
15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-46) INCREASING TO GOOD TO EXCELLENT
(653-915) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-51.
* MAX HUMIDITY........60-73 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 (195-287) DECREASING TO POOR
(25-83) AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-82...EXCEPT 72-79 RIDGES.
* MIN HUMIDITY........22-28 PERCENT.
* 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 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (26-88) INCREASING TO FAIR TO GOOD
(293-501) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 45 TO 51. HIGHS 78 TO 85. NORTH WINDS
1 TO 6 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 54. HIGHS 83 TO 92. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 54 TO 60. HIGHS 84 TO 92. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 55 TO 61. HIGHS 83 TO 90. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 54 TO 60. HIGHS 80 TO 88. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ698-192315-
SOUTHERN BLUE MOUNTAINS-
635 AM PDT TUE AUG 19 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-88.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH INCREASING TO SOUTHWEST
AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-46) INCREASING TO GOOD TO EXCELLENT
(585-819) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-53.
* MAX HUMIDITY........55-69 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 10 TO 15 MPH.
* VENTILATION INDEX...FAIR (223-301) DECREASING TO POOR (32-98)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-86.
* MIN HUMIDITY........17-22 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 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (38-96) INCREASING TO FAIR TO GOOD
(379-505) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 46 TO 52. HIGHS 83 TO 89. NORTH WINDS
2 TO 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 50 TO 56. HIGHS 88 TO 94. NORTHEAST
WINDS 2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 55 TO 61. HIGHS 88 TO 94.
NORTHEAST WINDS 1 TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 56 TO 61. HIGHS 87 TO 93. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 55 TO 60. HIGHS 84 TO 90. WEST
WINDS 1 TO 5 MPH.
8-14 DAY OUTLOOK FOR TUESDAY AUGUST 26 THROUGH MONDAY SEPTEMBER 1
A GREATER CHANCE OF ABOVE-NORMAL TEMPERATURES AND ABOVE-NORMAL
PRECIPITATION.
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