954
FNUS56 KPDT 302048
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
148 PM PDT SAT AUG 30 2025
DISCUSSION
A HOT AND DRY PERIOD IS EXPECTED TO BUILD OVER THE
REGION THROUGH THE NEXT WEEK. THERE WILL CONTINUE TO BE LOW-END
CHANCES FOR ISOLATED THUNDERSTORMS ACROSS PRIMARILY THE EASTERN
MOUNTAINS AND CENTRAL WASHINGTON CASCADES DURING THE AFTERNOON
HOURS THROUGH AT LEAST THE MIDWEEK, BUT OTHERWISE EXPECTING
ABOVE-AVERAGE TEMPERATURES, DECREASING RH RECOVERIES, AND
TERRAIN-DRIVEN WINDS GENERALLY LESS THAN 15 MPH, SAVE FOR PORTIONS
OF THE OREGON CASCADE FOOTHILLS, WHICH MAY OCCASIONALLY GUST UP TO
20 MPH OVER THE WEEKEND.
***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.
WAZ695-311115-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY.
* MIN TEMPERATURE.....55-62.
* MAX HUMIDITY........46-61 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.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (44-140) DECREASING TO POOR (25-54)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MAX TEMPERATURE.....81-90...EXCEPT 72-81 RIDGES.
* MIN HUMIDITY........23-35 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHEAST 2
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTHEAST 2
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (30-70) INCREASING TO FAIR TO EXCELLENT
(392-742) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
* MIN TEMPERATURE.....54-62.
* MAX HUMIDITY........62-77 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 1 TO 6 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
NORTHWEST 1 TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (50-162) DECREASING TO POOR (25-73)
AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....82-90...EXCEPT 73-81 RIDGES.
* MIN HUMIDITY........24-37 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING EAST 2 TO 7
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING EAST 1 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-60) INCREASING TO FAIR (275-499) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 57 TO 64. HIGHS 82 TO 95. NORTHWEST
WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 61 TO 68. HIGHS 83 TO 96. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 61 TO 67. HIGHS 82 TO 95. WEST
WINDS 1 TO 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 59 TO 66. HIGHS 76 TO 90. WEST
WINDS 1 TO 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 55 TO 62. HIGHS 71 TO 85. WEST
WINDS 2 TO 7 MPH.
WAZ690-311115-
KITTITAS VALLEY-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY IN THE EVENING.
* MIN TEMPERATURE.....60-68.
* MAX HUMIDITY........40-55 PERCENT...EXCEPT 36-44 PERCENT RIDGES.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (95-217) DECREASING TO POOR
(34-76) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MAX TEMPERATURE.....89-95...EXCEPT 79-90 RIDGES.
* MIN HUMIDITY........20-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 1 TO 6 MPH SHIFTING TO THE EAST
2 TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH SHIFTING TO THE SOUTHEAST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (43-107) INCREASING TO FAIR TO GOOD
(260-566) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
HAZY. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
* MIN TEMPERATURE.....61-69.
* MAX HUMIDITY........53-68 PERCENT...EXCEPT 45-57 PERCENT RIDGES.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
NORTHWEST 2 TO 7 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....20 PERCENT (SLIGHT CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (38-162) DECREASING TO POOR (34-100)
AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....89-94...EXCEPT 79-90 RIDGES.
* MIN HUMIDITY........21-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH SHIFTING TO THE
EAST IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 3 TO 8 MPH SHIFTING TO THE
EAST 2 TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (31-79) INCREASING TO POOR TO FAIR
(193-349) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 62 TO 70. HIGHS 93 TO 100. NORTH
WINDS 2 TO 7 MPH.
WEDNESDAY
CLEAR. LOWS 65 TO 73. HIGHS 95 TO 102. NORTH WINDS
2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 66 TO 72. HIGHS 93 TO 100.
NORTHWEST WINDS 1 TO 6 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 65 TO 71. HIGHS 90 TO 97. NORTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 62 TO 68. HIGHS 85 TO 92.
NORTHWEST WINDS 3 TO 8 MPH.
WAZ694-311115-
YAKAMA ALPINE DISTRICT-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY.
* MIN TEMPERATURE.....55-63.
* MAX HUMIDITY........52-67 PERCENT...EXCEPT 42-55 PERCENT RIDGES.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (34-82) DECREASING TO POOR (25-48) AFTER
MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
HAZY.
* MAX TEMPERATURE.....83-91...EXCEPT 75-85 RIDGES.
* MIN HUMIDITY........21-34 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTH 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.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE SOUTH
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-50) INCREASING TO FAIR (229-495) IN
THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MIN TEMPERATURE.....53-62.
* MAX HUMIDITY........61-76 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 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.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (74-144) DECREASING TO POOR (25-53)
AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....85-92...EXCEPT 76-86 RIDGES.
* MIN HUMIDITY........21-32 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTH 1 TO
5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH SHIFTING TO THE SOUTH IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (25-39) INCREASING TO POOR TO FAIR
(169-425) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 57 TO 65. HIGHS 85 TO 97. NORTHWEST
WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 61 TO 68. HIGHS 87 TO 99. NORTH
WINDS 1 TO 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 61 TO 69. HIGHS 85 TO 98.
NORTHWEST WINDS 1 TO 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 60 TO 67. HIGHS 80 TO 92. WEST
WINDS 1 TO 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 55 TO 63. HIGHS 76 TO 88. WEST
WINDS 1 TO 6 MPH.
ORZ691-WAZ691-311115-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. HAZY.
* MIN TEMPERATURE.....61-66.
* MAX HUMIDITY........46-61 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 7 MPH SHIFTING TO THE WEST
1 TO 5 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....NORTH WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (44-140) DECREASING TO POOR (25-49)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MAX TEMPERATURE.....89-97...EXCEPT 85-92 RIDGES.
* MIN HUMIDITY........19-25 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.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (26-66) INCREASING TO POOR TO FAIR
(135-287) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MIN TEMPERATURE.....60-66.
* MAX HUMIDITY........54-69 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 (38-170) DECREASING TO POOR (25-69)
AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....90-97...EXCEPT 86-92 RIDGES.
* MIN HUMIDITY........20-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 1 TO 6 MPH IN THE MORNING
BECOMING UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 6 MPH SHIFTING TO THE
SOUTHEAST 2 TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-83) INCREASING TO POOR TO FAIR
(135-259) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 62 TO 67. HIGHS 95 TO 101.
NORTHWEST WINDS 1 TO 6 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 64 TO 70. HIGHS 96 TO 102. NORTH
WINDS 2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 65 TO 70. HIGHS 96 TO 101. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 65 TO 70. HIGHS 90 TO 97. SOUTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 63 TO 68. HIGHS 86 TO 93.
SOUTHWEST WINDS 4 TO 9 MPH.
ORZ692-WAZ692-311115-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
HAZY.
* MIN TEMPERATURE.....59-68.
* MAX HUMIDITY........35-50 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
SOUTHEAST 1 TO 5 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
SOUTHEAST 2 TO 6 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.
* VENTILATION INDEX...POOR (92-174) DECREASING TO POOR (26-58)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY IN THE MORNING.
* MAX TEMPERATURE.....88-95...EXCEPT 82-87 RIDGES.
* MIN HUMIDITY........15-20 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13500 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
* VENTILATION INDEX...POOR (40-106) INCREASING TO GOOD TO EXCELLENT
(596-1050) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY AFTER MIDNIGHT.
* MIN TEMPERATURE.....58-68.
* MAX HUMIDITY........33-48 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
SOUTHEAST 1 TO 5 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 2 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (122-236) DECREASING TO POOR
(25-50) AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....88-96...EXCEPT 82-88 RIDGES.
* MIN HUMIDITY........16-22 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 1 TO 5 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......14500 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-46) INCREASING TO FAIR TO EXCELLENT
(258-800) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 60 TO 68. HIGHS 87 TO 97. EAST
WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 60 TO 69. HIGHS 86 TO 97. EAST
WINDS 1 TO 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 60 TO 69. HIGHS 85 TO 96. SOUTH
WINDS 1 TO 6 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 60 TO 68. HIGHS 82 TO 92. SOUTHWEST
WINDS 1 TO 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 58 TO 66. HIGHS 77 TO 87.
SOUTHWEST WINDS 1 TO 6 MPH.
ORZ693-WAZ693-311115-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MIN TEMPERATURE.....56-66.
* MAX HUMIDITY........37-52 PERCENT...EXCEPT 34-40 PERCENT RIDGES.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
SOUTHEAST 1 TO 5 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....SOUTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (106-194) DECREASING TO POOR (25-77)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. HAZY IN THE MORNING.
* MAX TEMPERATURE.....88-97...EXCEPT 80-89 RIDGES.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......14000 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
* VENTILATION INDEX...POOR (31-149) INCREASING TO EXCELLENT
(864-1050) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....58-67.
* MAX HUMIDITY........32-44 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 1 TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (181-277) DECREASING TO POOR
(25-76) AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....90-99...EXCEPT 83-90 RIDGES.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 2 TO 7 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......16500 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-70) INCREASING TO GOOD TO EXCELLENT
(561-993) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 58 TO 68. HIGHS 90 TO 99. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 58 TO 67. HIGHS 88 TO 98. EAST
WINDS 1 TO 6 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 58 TO 67. HIGHS 87 TO 97. SOUTH
WINDS 1 TO 6 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 57 TO 67. HIGHS 85 TO 94. SOUTHWEST
WINDS 1 TO 5 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
55 TO 65. HIGHS 80 TO 89. SOUTHWEST WINDS 1 TO 5 MPH.
ORZ701-311115-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY.
* MIN TEMPERATURE.....56-62.
* MAX HUMIDITY........57-72 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH...EXCEPT WEST 2
TO 7 MPH IN THE EASTERN COLUMBIA RIVER GORGE.
* 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 (96-170) DECREASING TO POOR (30-90)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
HAZY.
* MAX TEMPERATURE.....87-92...EXCEPT 82-88 RIDGES.
* MIN HUMIDITY........26-41 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 8 MPH...EXCEPT
NORTHWEST 4 TO 9 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.......7000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (28-112) INCREASING TO FAIR (239-347) IN
THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MIN TEMPERATURE.....56-61.
* MAX HUMIDITY........66-81 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 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 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (131-241) DECREASING TO POOR
(34-112) AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....86-92.
* MIN HUMIDITY........24-39 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 1 TO 6 MPH IN THE MORNING.
UPSLOPE LESS THAN 5 MPH. IN THE EASTERN COLUMBIA RIVER GORGE,
WEST WINDS 4 TO 9 MPH IN THE MORNING.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (25-106) INCREASING TO POOR TO FAIR
(169-255) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 59 TO 64. HIGHS 94 TO 99. WEST
WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 65 TO 70. HIGHS 96 TO 101.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 64 TO 69. HIGHS 94 TO 99. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 63 TO 68. HIGHS 88 TO 93. WEST
WINDS 2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 59 TO 64. HIGHS 84 TO 89. WEST
WINDS 2 TO 7 MPH.
ORZ702-311115-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY AND AREAS OF SMOKE.
* MIN TEMPERATURE.....53-61.
* MAX HUMIDITY........47-62 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 3 TO 6 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (35-113) DECREASING TO POOR (25-48)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
HAZY.
* MAX TEMPERATURE.....84-89...EXCEPT 76-84 RIDGES.
* MIN HUMIDITY........26-38 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 BECOMING NORTH 2 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-51) INCREASING TO POOR TO FAIR
(177-293) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY AND AREAS OF SMOKE.
* MIN TEMPERATURE.....52-60.
* 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....WEST 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 10 MPH.
* VENTILATION INDEX...POOR (52-168) DECREASING TO POOR (25-61)
AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....85-91...EXCEPT 78-86 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.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-42) INCREASING TO POOR TO FAIR
(176-288) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 56 TO 64. HIGHS 84 TO 96. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 63 TO 70. HIGHS 86 TO 98. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 61 TO 69. HIGHS 83 TO 96. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 59 TO 67. HIGHS 77 TO 91. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 55 TO 63. HIGHS 73 TO 87. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ695-311115-
EAGLE CAP WILDERNESS-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
HAZY IN THE EVENING.
* MIN TEMPERATURE.....59-65...EXCEPT 53-60 RIDGES.
* MAX HUMIDITY........34-45 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 2 TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (120-222) DECREASING TO POOR
(25-80) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....82-92...EXCEPT 70-81 RIDGES.
* MIN HUMIDITY........16-24 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13500 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
* VENTILATION INDEX...POOR (49-179) INCREASING TO EXCELLENT
(828-1050) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....60-66...EXCEPT 55-62 RIDGES.
* MAX HUMIDITY........30-39 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (143-269) DECREASING TO POOR
(25-79) AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....84-94...EXCEPT 73-84 RIDGES.
* MIN HUMIDITY........16-22 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 2 TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......14500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 10 MPH.
* VENTILATION INDEX...POOR (25-84) INCREASING TO GOOD TO EXCELLENT
(660-1008) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 57 TO 65. HIGHS 79 TO 94. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 56 TO 64. HIGHS 77 TO 92.
NORTHEAST WINDS 1 TO 6 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 55 TO 64. HIGHS 76 TO 91.
NORTHWEST WINDS 1 TO 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 54 TO 64. HIGHS 73 TO 88. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
52 TO 62. HIGHS 69 TO 84. SOUTHWEST WINDS 1 TO 5 MPH.
ORZ694-311115-
GRANDE RONDE VALLEY OF OREGON-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
HAZY.
* MIN TEMPERATURE.....56-61.
* MAX HUMIDITY........44-58 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 2 TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 2 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (186-240) DECREASING TO POOR
(50-86) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....90-95.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 5 TO 8 MPH SHIFTING TO THE
SOUTHEAST 9 TO 14 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11000 FT AGL.
* TRANSPORT WINDS.....SOUTH 15 TO 20 MPH.
* VENTILATION INDEX...POOR (102-188) INCREASING TO EXCELLENT
(1047-1050) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....55-60.
* MAX HUMIDITY........41-52 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 3 TO 8 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (290-348) DECREASING TO POOR (43-75)
AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....92-97.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13000 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
* VENTILATION INDEX...POOR (44-78) INCREASING TO EXCELLENT
(952-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 94 TO 99. SOUTHEAST
WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 93 TO 98. NORTH
WINDS 1 TO 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 92 TO 97. NORTH
WINDS 1 TO 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 58 TO 63. HIGHS 89 TO 94. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
56 TO 61. HIGHS 85 TO 90. WEST WINDS 1 TO 5 MPH.
ORZ699-311115-
WESTERN FORESTED BLUE MOUNTAINS-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
HAZY.
* MIN TEMPERATURE.....57-63.
* MAX HUMIDITY........38-48 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 1 TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (161-315) DECREASING TO POOR
(25-81) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. HAZY IN THE AFTERNOON.
* MAX TEMPERATURE.....86-92...EXCEPT 79-87 RIDGES.
* MIN HUMIDITY........15-21 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTH 3 TO
8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......14000 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
* VENTILATION INDEX...POOR (42-168) INCREASING TO EXCELLENT
(803-1050) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY.
* MIN TEMPERATURE.....56-62.
* MAX HUMIDITY........35-50 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (173-339) DECREASING TO POOR
(25-76) AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....87-94...EXCEPT 80-87 RIDGES.
* MIN HUMIDITY........16-21 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 1 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......14500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH INCREASING TO SOUTH
AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-59) INCREASING TO EXCELLENT
(714-1028) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 57 TO 63. HIGHS 85 TO 94. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 57 TO 64. HIGHS 84 TO 93. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 56 TO 63. HIGHS 83 TO 92. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 56 TO 63. HIGHS 80 TO 88. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 54 TO
61. HIGHS 75 TO 84. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
ORZ696-311115-
JOHN DAY VALLEY-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. HAZY AFTER MIDNIGHT.
* MIN TEMPERATURE.....58-63.
* MAX HUMIDITY........39-48 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (140-374) DECREASING TO POOR
(25-85) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. HAZY IN THE AFTERNOON.
* MAX TEMPERATURE.....88-97...EXCEPT 84-89 RIDGES.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......16000 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
* VENTILATION INDEX...POOR (25-140) INCREASING TO EXCELLENT
(789-1050) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY.
* MIN TEMPERATURE.....56-61.
* MAX HUMIDITY........47-57 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 2 TO 6 MPH SHIFTING TO THE
NORTHWEST 1 TO 6 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 2 TO 7 MPH SHIFTING TO THE
NORTHWEST 2 TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH SHIFTING TO THE
NORTHWEST AFTER MIDNIGHT.
* VENTILATION INDEX...POOR TO FAIR (143-395) DECREASING TO POOR
(25-82) AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....89-97...EXCEPT 85-90 RIDGES.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......15000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH INCREASING TO SOUTH
AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-42) INCREASING TO EXCELLENT
(714-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 91 TO 99. EAST
WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 60 TO 66. HIGHS 89 TO 97.
NORTHEAST WINDS 1 TO 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 59 TO 65. HIGHS 89 TO 97.
SOUTHEAST WINDS 1 TO 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 59 TO 66. HIGHS 85 TO 93. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 58 TO 63. HIGHS 80 TO 90.
SOUTHWEST WINDS 1 TO 5 MPH.
ORZ700-311115-
CENTRAL MOUNTAINS OF OREGON-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY. AREAS OF SMOKE AFTER MIDNIGHT.
* MIN TEMPERATURE.....48-58.
* MAX HUMIDITY........50-65 PERCENT...EXCEPT 41-53 PERCENT RIDGES.
* 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 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 (166-336) DECREASING TO POOR
(25-40) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. AREAS OF SMOKE IN THE MORNING.
HAZY.
* MAX TEMPERATURE.....87-92...EXCEPT 82-87 RIDGES.
* MIN HUMIDITY........13-21 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHWEST 2
TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTH 2 TO 7
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......15000 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH INCREASING TO AROUND 15
MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (26-46) INCREASING TO GOOD TO EXCELLENT
(566-1050) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY AND AREAS OF SMOKE.
* MIN TEMPERATURE.....48-57.
* MAX HUMIDITY........62-77 PERCENT...EXCEPT 51-65 PERCENT RIDGES.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 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 (183-357) DECREASING TO POOR
(25-42) AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....89-94...EXCEPT 83-88 RIDGES.
* MIN HUMIDITY........13-19 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTH 1 TO
5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTH 1 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13000 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH INCREASING TO AROUND 15
MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-30) INCREASING TO GOOD TO EXCELLENT
(559-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 50 TO 60. HIGHS 90 TO 96. SOUTHWEST
WINDS 1 TO 6 MPH.
WEDNESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 55 TO 65. HIGHS 88 TO 94. NORTH WINDS 1 TO
6 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 53 TO 64. HIGHS 87 TO 94.
SOUTHWEST WINDS 1 TO 6 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 54 TO 63. HIGHS 84 TO 90. SOUTHWEST
WINDS 1 TO 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 52 TO 60. HIGHS 81 TO 87.
SOUTHWEST WINDS 1 TO 6 MPH.
ORZ703-311115-
WARM SPRINGS RESERVATION-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY AND AREAS OF SMOKE.
* MIN TEMPERATURE.....55-60.
* MAX HUMIDITY........50-60 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (103-225) DECREASING TO POOR
(26-48) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MAX TEMPERATURE.....86-93...EXCEPT 74-83 RIDGES.
* MIN HUMIDITY........21-27 PERCENT...EXCEPT 26-38 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.......9000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-47) INCREASING TO FAIR (265-393) IN
THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY AND AREAS OF SMOKE.
* MIN TEMPERATURE.....54-59.
* MAX HUMIDITY........60-72 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 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 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (140-276) DECREASING TO POOR
(25-57) AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....87-94...EXCEPT 77-85 RIDGES.
* MIN HUMIDITY........19-24 PERCENT...EXCEPT 23-36 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.......9000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-36) INCREASING TO FAIR (234-390) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 90 TO 98. WEST
WINDS 1 TO 6 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 64 TO 69. HIGHS 89 TO 97.
NORTHWEST WINDS 1 TO 6 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 63 TO 68. HIGHS 88 TO 97. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 61 TO 66. HIGHS 82 TO 93. WEST
WINDS 1 TO 6 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 58 TO 63. HIGHS 79 TO 90. WEST
WINDS 2 TO 7 MPH.
ORZ704-311115-
NORTHERN DESCHUTES NATIONAL FOREST-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY AND AREAS OF SMOKE.
* MIN TEMPERATURE.....49-55.
* MAX HUMIDITY........55-70 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 5 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (90-196) DECREASING TO POOR (25-50)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. HAZY AND AREAS OF SMOKE.
* MAX TEMPERATURE.....85-90...EXCEPT 71-82 RIDGES.
* MIN HUMIDITY........23-28 PERCENT...EXCEPT 27-40 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 1 TO 6
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 (25-39) INCREASING TO FAIR TO GOOD
(322-594) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY AND AREAS OF SMOKE.
* MIN TEMPERATURE.....48-55.
* MAX HUMIDITY........64-79 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST 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 (100-220) DECREASING TO POOR
(25-49) AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....87-92...EXCEPT 74-84 RIDGES.
* MIN HUMIDITY........19-24 PERCENT...EXCEPT 23-36 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.......10000 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-32) INCREASING TO FAIR TO GOOD
(364-614) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 52 TO 58. HIGHS 83 TO 96. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 58 TO 64. HIGHS 81 TO 94.
NORTHWEST WINDS 2 TO 7 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 56 TO 62. HIGHS 81 TO 94. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 54 TO 61. HIGHS 77 TO 90. WEST
WINDS 1 TO 6 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 52 TO 58. HIGHS 72 TO 86. WEST
WINDS 1 TO 6 MPH.
ORZ705-311115-
SOUTHERN DESCHUTES NATIONAL FOREST-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY AND AREAS OF SMOKE.
* MIN TEMPERATURE.....45-52.
* MAX HUMIDITY........63-78 PERCENT...EXCEPT 51-66 PERCENT RIDGES.
* 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 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 (85-199) DECREASING TO POOR (25-40)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. HAZY AND AREAS OF SMOKE.
* MAX TEMPERATURE.....83-88...EXCEPT 73-82 RIDGES.
* MIN HUMIDITY........15-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHWEST 2
TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTHWEST 2
TO 7 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11000 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH INCREASING TO AROUND 15
MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-42) INCREASING TO EXCELLENT
(724-1050) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR. HAZY AND AREAS OF SMOKE.
* MIN TEMPERATURE.....43-51.
* MAX HUMIDITY........73-88 PERCENT...EXCEPT 61-76 PERCENT RIDGES.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 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 (102-234) DECREASING TO POOR
(25-34) AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-90...EXCEPT 75-84 RIDGES.
* MIN HUMIDITY........13-23 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.......11000 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH INCREASING TO AROUND 15
MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-31) INCREASING TO EXCELLENT
(732-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 46 TO 55. HIGHS 84 TO 92. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. PARTLY
CLOUDY. LOWS 51 TO 59. HIGHS 81 TO 89. TERRAIN DRIVEN WINDS LESS
THAN 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 49 TO 57. HIGHS 81 TO 89. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 56. HIGHS 77 TO 86. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 47 TO 54. HIGHS 74 TO 83. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ697-311115-
CENTRAL BLUE MOUNTAINS-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
HAZY.
* MIN TEMPERATURE.....53-60.
* MAX HUMIDITY........38-47 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 3 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR (308-424) DECREASING TO POOR (29-85)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MAX TEMPERATURE.....83-89...EXCEPT 77-85 RIDGES.
* MIN HUMIDITY........14-19 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHEAST 5
TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13500 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
* VENTILATION INDEX...POOR (49-133) INCREASING TO EXCELLENT
(902-1050) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY.
* MIN TEMPERATURE.....53-59.
* MAX HUMIDITY........34-49 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 2 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR (294-476) DECREASING TO POOR (25-71)
AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-90...EXCEPT 79-87 RIDGES.
* MIN HUMIDITY........13-18 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTH 2 TO
5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 1 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH INCREASING TO SOUTH
AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-43) INCREASING TO EXCELLENT
(793-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 54 TO 60. HIGHS 84 TO 91. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 54 TO 60. HIGHS 82 TO 89.
TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 53 TO 59. HIGHS 81 TO 88. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 54 TO 59. HIGHS 79 TO 86. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS. MOSTLY CLOUDY. LOWS 51 TO
58. HIGHS 74 TO 82. SOUTHWEST WINDS 1 TO 5 MPH.
ORZ698-311115-
SOUTHERN BLUE MOUNTAINS-
148 PM PDT SAT AUG 30 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MIN TEMPERATURE.....51-57.
* MAX HUMIDITY........38-49 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 3 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 2 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.
* VENTILATION INDEX...FAIR (334-422) DECREASING TO POOR (27-75)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MAX TEMPERATURE.....84-91.
* MIN HUMIDITY........11-16 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHEAST 5
TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTHEAST 5
TO 8 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (34-84) INCREASING TO EXCELLENT
(971-1050) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
HAZY.
* MIN TEMPERATURE.....51-58.
* MAX HUMIDITY........42-57 PERCENT...EXCEPT 35-46 PERCENT RIDGES.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 2 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST 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.....SOUTHEAST AROUND 10 MPH.
* VENTILATION INDEX...FAIR (320-436) DECREASING TO POOR (25-54)
AFTER MIDNIGHT.
LABOR DAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-90...EXCEPT 80-85 RIDGES.
* MIN HUMIDITY........11-16 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTH 3 TO
6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTH 3 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH INCREASING TO SOUTH
AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-34) INCREASING TO GOOD TO EXCELLENT
(650-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLEAR. LOWS 53 TO 60. HIGHS 88 TO 93. EAST
WINDS 2 TO 7 MPH.
WEDNESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 55 TO 60. HIGHS 86 TO 91. NORTHEAST WINDS
1 TO 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 53 TO 58. HIGHS 85 TO 90. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 54 TO 59. HIGHS 82 TO 88. SOUTHWEST
WINDS 1 TO 5 MPH.
SATURDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
52 TO 57. HIGHS 78 TO 84. WEST WINDS 1 TO 6 MPH.
.8-14 DAY OUTLOOK FOR SUNDAY SEPTEMBER 7 THROUGH SATURDAY SEPTEMBER 13...
A GREATER CHANCE OF ABOVE-NORMAL TEMPERATURES AND PRECIPITATION.
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