791
FNUS56 KPDT 201321
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
621 AM PDT WED AUG 20 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.
WAZ695-202315-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....69-78...EXCEPT 60-69 RIDGES.
* MIN HUMIDITY........30-45 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 10 TO 15 MPH.
* VENTILATION INDEX...POOR (43-195) INCREASING TO FAIR TO GOOD
(267-553) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-52.
* MAX HUMIDITY........51-66 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 (76-276) DECREASING TO POOR
(25-84) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-85...EXCEPT 69-76 RIDGES.
* MIN HUMIDITY........18-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHEAST 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.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-50) INCREASING TO POOR TO FAIR
(136-270) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 52 TO 57. HIGHS 76 TO 88. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 80 TO 93. EAST
WINDS 2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 59 TO 66. HIGHS 81 TO 94. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 59 TO 65. HIGHS 79 TO 92. WEST WINDS
1 TO 6 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 57 TO 64. HIGHS 77 TO 91. WEST
WINDS 2 TO 7 MPH.
WAZ690-202315-
KITTITAS VALLEY-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....78-87...EXCEPT 70-81 RIDGES.
* MIN HUMIDITY........20-28 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.......9500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (94-216) INCREASING TO GOOD TO
EXCELLENT (526-722) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....51-58.
* MAX HUMIDITY........37-52 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 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.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR (246-400) DECREASING TO POOR (30-108)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-89...EXCEPT 72-84 RIDGES.
* MIN HUMIDITY........15-20 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 6 MPH SHIFTING TO THE
EAST 2 TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-105) INCREASING TO POOR TO FAIR
(199-319) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 55 TO 62. HIGHS 87 TO 94. NORTH WINDS 3 TO
8 MPH.
SATURDAY
CLEAR. LOWS 59 TO 67. HIGHS 90 TO 97. NORTH WINDS
2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 64 TO 71. HIGHS 92 TO 99. NORTH
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 64 TO 70. HIGHS 92 TO 99. NORTH
WINDS 2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 64 TO 69. HIGHS 91 TO 97. NORTH
WINDS 3 TO 8 MPH.
WAZ694-202315-
YAKAMA ALPINE DISTRICT-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....76-85...EXCEPT 66-78 RIDGES.
* MIN HUMIDITY........22-34 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 (38-122) INCREASING TO FAIR (317-483) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-54.
* MAX HUMIDITY........47-62 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (107-223) DECREASING TO POOR
(25-47) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY 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 (25-46) INCREASING TO POOR TO FAIR
(154-274) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 53 TO 59. HIGHS 79 TO 92. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 58 TO 64. HIGHS 84 TO 96.
NORTHEAST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 62 TO 68. HIGHS 85 TO 97. NORTH
WINDS 1 TO 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 60 TO 66. HIGHS 84 TO 96. WEST WINDS
1 TO 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 60 TO 66. HIGHS 82 TO 94. WEST
WINDS 1 TO 6 MPH.
ORZ691-WAZ691-202315-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-88.
* MIN HUMIDITY........22-28 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.......9500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (63-155) INCREASING TO FAIR TO GOOD
(404-586) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....53-58.
* MAX HUMIDITY........47-62 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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 (177-317) DECREASING TO POOR
(25-49) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....86-91...EXCEPT 81-87 RIDGES.
* MIN HUMIDITY........15-20 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.......7000 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-46) INCREASING TO POOR TO FAIR
(185-281) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 55 TO 61. HIGHS 90 TO 96. NORTHEAST WINDS
3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 58 TO 64. HIGHS 93 TO 99.
NORTHEAST WINDS 3 TO 8 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 64 TO 69. HIGHS 94 TO 99. NORTH
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 64 TO 69. HIGHS 94 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-WAZ692-202315-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....75-84...EXCEPT 68-73 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.......9000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (45-139) INCREASING TO FAIR TO GOOD
(333-515) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-57.
* MAX HUMIDITY........50-65 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.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (109-211) DECREASING TO POOR
(25-47) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-88...EXCEPT 73-78 RIDGES.
* MIN HUMIDITY........18-25 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.......8000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-46) INCREASING TO POOR TO FAIR
(151-265) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 51 TO 60. HIGHS 82 TO 92. NORTHEAST WINDS
1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 56 TO 64. HIGHS 85 TO 95. EAST
WINDS 1 TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 61 TO 68. HIGHS 84 TO 94. WEST
WINDS 1 TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 60 TO 67. HIGHS 84 TO 95. NORTHWEST
WINDS 1 TO 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 60 TO 66. HIGHS 82 TO 93. WEST
WINDS 1 TO 5 MPH.
ORZ693-WAZ693-202315-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-87...EXCEPT 73-80 RIDGES.
* MIN HUMIDITY........23-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 2 TO 7
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (32-98) INCREASING TO FAIR TO GOOD
(392-534) IN THE AFTERNOON.
TONIGHT
* 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 2 TO 7 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (153-281) DECREASING TO POOR
(25-52) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY 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 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-63) INCREASING TO POOR TO FAIR
(171-293) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 50 TO 59. HIGHS 85 TO 94. NORTHEAST WINDS
1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 54 TO 63. HIGHS 89 TO 98. EAST
WINDS 1 TO 5 MPH.
SUNDAY
MOSTLY CLOUDY. LOWS 59 TO 68. HIGHS 86 TO 95. NORTHWEST
WINDS 2 TO 7 MPH.
MONDAY
PARTLY CLOUDY. LOWS 57 TO 66. HIGHS 85 TO 95. NORTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 57 TO 66. HIGHS 83 TO 93.
NORTHWEST WINDS 1 TO 6 MPH.
ORZ701-202315-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-86...EXCEPT 76-83 RIDGES.
* MIN HUMIDITY........27-35 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 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 TO FAIR (73-203) INCREASING TO FAIR TO
GOOD (396-630) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........46-61 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 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 AROUND 15 MPH DECREASING TO AROUND 5 MPH
AFTER MIDNIGHT.
* VENTILATION INDEX...POOR TO FAIR (183-313) DECREASING TO POOR
(25-73) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....85-90.
* 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 (25-34) INCREASING TO FAIR (215-321) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 56 TO 61. HIGHS 90 TO 95. EAST WINDS 2 TO
7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 62 TO 67. HIGHS 93 TO 98.
NORTHEAST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 65 TO 70. HIGHS 94 TO 99. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 62 TO 67. HIGHS 93 TO 98. NORTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 62 TO 67. HIGHS 91 TO 96. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ702-202315-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-84...EXCEPT 69-78 RIDGES.
* MIN HUMIDITY........27-40 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 (41-129) INCREASING TO FAIR (210-390) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-55.
* MAX HUMIDITY........41-56 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (72-198) DECREASING TO POOR (25-42)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....83-88...EXCEPT 76-84 RIDGES.
* MIN HUMIDITY........17-24 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.......5500 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-41) INCREASING TO POOR TO FAIR
(152-274) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 55 TO 61. HIGHS 81 TO 92. EAST WINDS 1 TO
6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 60 TO 66. HIGHS 83 TO 96. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 62 TO 69. HIGHS 84 TO 97. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 59 TO 66. HIGHS 83 TO 97. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 58 TO 66. HIGHS 81 TO 94. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ695-202315-
EAGLE CAP WILDERNESS-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....73-87...EXCEPT 65-76 RIDGES.
* MIN HUMIDITY........22-35 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.......10000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-106) INCREASING TO FAIR TO GOOD
(335-515) IN THE AFTERNOON.
TONIGHT
* 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 (105-281) DECREASING TO POOR
(25-80) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-88...EXCEPT 67-77 RIDGES.
* MIN HUMIDITY........16-26 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.......8000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-90) INCREASING TO POOR TO FAIR
(169-269) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 48 TO 57. HIGHS 76 TO 91. NORTH WINDS 1 TO
6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 54 TO 62. HIGHS 79 TO 94. NORTH
WINDS 1 TO 5 MPH.
SUNDAY
MOSTLY CLOUDY. LOWS 57 TO 66. HIGHS 75 TO 90. NORTHWEST
WINDS 1 TO 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 54 TO 63. HIGHS 75 TO 90. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
53 TO 63. HIGHS 72 TO 87. NORTHWEST WINDS 1 TO 5 MPH.
ORZ694-202315-
GRANDE RONDE VALLEY OF OREGON-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-87.
* MIN HUMIDITY........24-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 10 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (103-179) INCREASING TO FAIR TO GOOD
(484-640) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-53.
* MAX HUMIDITY........63-78 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 6 TO 12 MPH DECREASING TO 3
TO 6 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (215-299) DECREASING TO POOR (40-80)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-90.
* 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.......7000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (46-86) INCREASING TO FAIR (248-310) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 49 TO 54. HIGHS 91 TO 96. NORTH WINDS 2 TO
7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 94 TO 99. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SUNDAY
MOSTLY CLOUDY. LOWS 60 TO 65. HIGHS 91 TO 96. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 59 TO 64. HIGHS 90 TO 95. NORTHWEST
WINDS 1 TO 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 58 TO 63. HIGHS 89 TO 94.
NORTHWEST WINDS 1 TO 6 MPH.
ORZ699-202315-
WESTERN FORESTED BLUE MOUNTAINS-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....75-82...EXCEPT 70-76 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 6 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 (33-103) INCREASING TO FAIR TO GOOD
(371-551) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-53.
* MAX HUMIDITY........51-65 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....NORTH 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 (150-266) DECREASING TO POOR
(25-57) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-86...EXCEPT 74-81 RIDGES.
* MIN HUMIDITY........16-23 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-49) INCREASING TO POOR TO FAIR
(170-290) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 50 TO 56. HIGHS 82 TO 91. TERRAIN DRIVEN
WINDS LESS THAN 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 55 TO 61. HIGHS 85 TO 94.
NORTHEAST WINDS 1 TO 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
59 TO 65. HIGHS 81 TO 90. NORTHWEST WINDS 1 TO 5 MPH.
MONDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
56 TO 63. HIGHS 81 TO 90. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
56 TO 63. HIGHS 79 TO 88. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
ORZ696-202315-
JOHN DAY VALLEY-
621 AM PDT WED AUG 20 2025
TODAY
* 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.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (43-107) INCREASING TO FAIR TO GOOD
(374-536) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........52-63 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....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 (209-341) DECREASING TO POOR (25-60)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY 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.......8000 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH SHIFTING TO THE NORTHWEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-52) INCREASING TO POOR TO FAIR
(132-274) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 53 TO 58. HIGHS 89 TO 97. NORTHEAST WINDS
1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 90 TO 98.
NORTHEAST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 62 TO 67. HIGHS 87 TO 96. NORTHEAST
WINDS 1 TO 6 MPH.
MONDAY
PARTLY CLOUDY. LOWS 60 TO 66. HIGHS 87 TO 96. NORTHEAST
WINDS 1 TO 5 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
59 TO 65. HIGHS 86 TO 94. NORTHEAST WINDS 1 TO 5 MPH.
ORZ700-202315-
CENTRAL MOUNTAINS OF OREGON-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-84...EXCEPT 71-77 RIDGES.
* MIN HUMIDITY........21-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 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 (30-72) INCREASING TO FAIR TO GOOD
(350-504) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-53.
* MAX HUMIDITY........55-70 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 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...FAIR (250-400) DECREASING TO POOR (25-50)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-90...EXCEPT 77-84 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.......8500 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-38) INCREASING TO POOR TO FAIR
(179-303) 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 54 TO 61. HIGHS 90 TO 96.
NORTHEAST WINDS 3 TO 8 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 57 TO 65. HIGHS 88 TO 95. NORTHWEST
WINDS 2 TO 7 MPH.
MONDAY
PARTLY CLOUDY. LOWS 56 TO 64. HIGHS 87 TO 94. WEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 55 TO 63. HIGHS 85 TO 93. NORTH
WINDS 2 TO 7 MPH.
ORZ703-202315-
WARM SPRINGS RESERVATION-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-87...EXCEPT 67-76 RIDGES.
* MIN HUMIDITY........24-31 PERCENT...EXCEPT 32-47 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 2 TO
7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST 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 (40-108) INCREASING TO FAIR (320-456) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........48-60 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 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 (141-289) DECREASING TO POOR
(25-38) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....84-91...EXCEPT 74-82 RIDGES.
* MIN HUMIDITY........17-23 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.......6500 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-33) INCREASING TO FAIR (204-290) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 56 TO 61. HIGHS 86 TO 95. NORTHEAST WINDS
3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 61 TO 66. 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 61 TO 66. HIGHS 88 TO 97. NORTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 60 TO 66. HIGHS 86 TO 96. NORTH
WINDS 2 TO 7 MPH.
ORZ704-202315-
NORTHERN DESCHUTES NATIONAL FOREST-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-85...EXCEPT 66-76 RIDGES.
* MIN HUMIDITY........25-31 PERCENT...EXCEPT 31-46 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 (31-87) INCREASING TO FAIR (314-450) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-51.
* MAX HUMIDITY........58-71 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...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.....NORTHWEST AROUND 10 MPH SHIFTING TO THE SOUTH
AFTER MIDNIGHT.
* VENTILATION INDEX...POOR TO FAIR (111-249) DECREASING TO POOR
(25-34) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-90...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.......6000 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-43) INCREASING TO POOR TO FAIR
(199-295) 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 61. HIGHS 84 TO 96. NORTH
WINDS 3 TO 8 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 58 TO 63. HIGHS 84 TO 97. NORTHWEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 82 TO 96. NORTH
WINDS 1 TO 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 55 TO 61. HIGHS 80 TO 94. NORTH
WINDS 1 TO 6 MPH.
ORZ705-202315-
SOUTHERN DESCHUTES NATIONAL FOREST-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....76-81...EXCEPT 67-75 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 (25-48) INCREASING TO FAIR (354-476) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....42-49.
* MAX HUMIDITY........67-82 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 1 TO 5 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (171-375) DECREASING TO POOR
(25-47) AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....83-88...EXCEPT 74-81 RIDGES.
* MIN HUMIDITY........16-24 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.......9000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-48) INCREASING TO FAIR (320-438) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
MOSTLY CLEAR. LOWS 46 TO 54. HIGHS 85 TO 95. NORTHEAST
WINDS 2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 49 TO 58. HIGHS 85 TO 94. NORTH
WINDS 1 TO 6 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 52 TO 60. HIGHS 84 TO 92. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 51 TO 59. HIGHS 82 TO 90. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 50 TO 57. HIGHS 79 TO 88. TERRAIN DRIVEN
WINDS LESS THAN 5 MPH.
ORZ697-202315-
CENTRAL BLUE MOUNTAINS-
621 AM PDT WED AUG 20 2025
TODAY
* 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 (35-113) INCREASING TO FAIR TO GOOD
(430-652) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-51.
* MAX HUMIDITY........55-69 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 1 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH.
* VENTILATION INDEX...FAIR (211-347) DECREASING TO POOR (25-70)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-87...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.....NORTH AROUND 5 MPH SHIFTING TO THE WEST IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (25-58) INCREASING TO FAIR (260-388) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 48 TO 54. HIGHS 84 TO 91. TERRAIN DRIVEN
WINDS LESS THAN 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 85 TO 92. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 56 TO 63. HIGHS 79 TO 88. TERRAIN DRIVEN
WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
54 TO 59. HIGHS 80 TO 87. 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.
ORZ698-202315-
SOUTHERN BLUE MOUNTAINS-
621 AM PDT WED AUG 20 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-82...EXCEPT 72-77 RIDGES.
* 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.......10000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (58-124) INCREASING TO GOOD TO EXCELLENT
(532-700) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-52.
* MAX HUMIDITY........58-73 PERCENT...EXCEPT 54-62 PERCENT RIDGES.
* 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 5 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH.
* VENTILATION INDEX...FAIR (315-401) DECREASING TO POOR (28-76)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY 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 (25-53) INCREASING TO POOR TO FAIR
(179-325) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
CLEAR. LOWS 49 TO 56. HIGHS 88 TO 94. NORTHEAST WINDS
2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 55 TO 61. HIGHS 89 TO 95. EAST
WINDS 1 TO 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 57 TO 63. HIGHS 84 TO 90. TERRAIN DRIVEN
WINDS LESS THAN 5 MPH.
MONDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
55 TO 60. HIGHS 84 TO 89. NORTHWEST WINDS 1 TO 5 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
55 TO 60. HIGHS 81 TO 86. 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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