208
FNUS56 KPDT 111357
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
657 AM PDT MON AUG 11 2025
DISCUSSION
EXTREME HEAT WARNINGS ARE ACTIVE ACROSS MUCH OF THE
COLUMBIA BASIN AND CENTRAL OREGON THROUGH TUESDAY AS AN UPPER
LEVEL RIDGE OF HIGH PRESSURE IS PRESENT OVER THE AREA. A SYSTEM
WILL APPROACH THE AREA TUESDAY AND WEDNESDAY, INCREASING WINDS AND
CRITICAL FIRE CONDITIONS - ESPECIALLY ACROSS CENTRAL OREGON.
OR696, OR698, AND OR703 ARE THE PRIMARY ZONES OF CONCERN, LIKELY
REACHING RED FLAG CRITERIA WEDNESDAY. THE WEATHER PATTERNS TURNS
MORE PROGRESSIVE OVER THE LATTER HALF OF THE WEEK. A STRONG UPPER
LEVEL TROUGH WILL PARK ITSELF OFF THE BRITISH COLUMBIA COAST,
ALLOWING FLOW ALOFT TO BECOME MORE FROM THE SOUTHWEST AND
HUMIDITIES TO IMPROVE THROUGH 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.
WAZ695-112330-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....86-95...EXCEPT 78-86 RIDGES.
* MIN HUMIDITY........23-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 6 MPH SHIFTING TO THE
SOUTHEAST 1 TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 1 TO 6 MPH IN THE MORNING
BECOMING 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 SOUTH IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (25-100) INCREASING TO POOR TO FAIR
(35-261) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....60-66.
* MAX HUMIDITY........49-64 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.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (73-209) DECREASING TO POOR
(25-69) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....86-94...EXCEPT 77-85 RIDGES.
* MIN HUMIDITY........25-36 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-56) INCREASING TO FAIR (312-480) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
NOT AS WARM. MOSTLY CLEAR. LOWS 54 TO 62. HIGHS
65 TO 80. WEST WINDS 5 TO 11 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 46 TO 53. HIGHS 61 TO 75. WEST
WINDS 5 TO 11 MPH.
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS 47 TO 54.
HIGHS 54 TO 69. WEST WINDS 3 TO 8 MPH.
SATURDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS 48 TO
54. HIGHS 57 TO 72. WEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
45 TO 51. HIGHS 60 TO 73. WEST WINDS 2 TO 7 MPH.
WAZ690-112330-
KITTITAS VALLEY-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....93-100...EXCEPT 82-95 RIDGES.
* MIN HUMIDITY........20-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 3 TO 8 MPH SHIFTING TO THE EAST
2 TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (75-177) INCREASING TO FAIR (259-495) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....66-72.
* MAX HUMIDITY........37-52 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 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 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (175-299) DECREASING TO POOR
(32-104) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....94-101...EXCEPT 84-96 RIDGES.
* MIN HUMIDITY........20-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 5 MPH SHIFTING TO THE
SOUTHWEST 2 TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 1 TO 6 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (37-115) INCREASING TO FAIR (362-498) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
NOT AS WARM. CLEAR. LOWS 63 TO 69. HIGHS 82 TO 91.
NORTHWEST WINDS 7 TO 13 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 54 TO 60. HIGHS 77 TO 85.
NORTHWEST WINDS 9 TO 15 MPH.
FRIDAY
A CHANCE OF SHOWERS. MOSTLY CLOUDY. LOWS 54 TO 59.
HIGHS 71 TO 80. WEST WINDS 5 TO 11 MPH.
SATURDAY
A CHANCE OF SHOWERS. MOSTLY CLOUDY. LOWS 54 TO 59.
HIGHS 73 TO 82. WEST WINDS 3 TO 8 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 51 TO 56. HIGHS 75 TO 83. WEST WINDS
2 TO 7 MPH.
WAZ694-112330-
YAKAMA ALPINE DISTRICT-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....91-98...EXCEPT 82-93 RIDGES.
* MIN HUMIDITY........18-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 1 TO 5 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH SHIFTING TO THE SOUTHWEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-39) INCREASING TO POOR TO FAIR
(134-254) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....61-67.
* MAX HUMIDITY........42-57 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.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (51-145) DECREASING TO POOR (25-65)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....91-98...EXCEPT 81-92 RIDGES.
* MIN HUMIDITY........19-31 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHWEST 1
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTHWEST 2
TO 6 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-55) INCREASING TO FAIR (283-419) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
NOT AS WARM. CLEAR. LOWS 55 TO 63. HIGHS 72 TO 86.
WEST WINDS 5 TO 11 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 54. HIGHS 67 TO 80. WEST
WINDS 5 TO 11 MPH.
FRIDAY
A CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 47 TO 55.
HIGHS 60 TO 74. WEST WINDS 3 TO 8 MPH.
SATURDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS 49 TO
56. HIGHS 63 TO 76. SOUTHWEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 46 TO 53. HIGHS 66 TO 79. WEST
WINDS 2 TO 7 MPH.
ORZ691-WAZ691-112330-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....97-102...EXCEPT 92-98 RIDGES.
* MIN HUMIDITY........15-22 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 2 TO 5 MPH SHIFTING TO THE
NORTH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (27-77) INCREASING TO FAIR (251-419) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....65-71.
* MAX HUMIDITY........38-52 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 6 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 (110-246) DECREASING TO POOR
(25-56) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....97-102...EXCEPT 92-98 RIDGES.
* MIN HUMIDITY........16-21 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 7
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST 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 (25-80) INCREASING TO POOR TO FAIR
(198-358) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 64 TO 71. HIGHS 86 TO 95. WEST WINDS
8 TO 14 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 55 TO 61. HIGHS 79 TO 87. WEST
WINDS 9 TO 15 MPH.
FRIDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 55 TO
61. HIGHS 76 TO 84. SOUTHWEST WINDS 6 TO 12 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 57 TO
62. HIGHS 76 TO 84. SOUTHWEST WINDS 5 TO 11 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 54 TO 59. HIGHS 78 TO 85. WEST
WINDS 3 TO 8 MPH.
ORZ692-WAZ692-112330-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....88-98...EXCEPT 81-87 RIDGES.
* MIN HUMIDITY........19-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (33-95) INCREASING TO FAIR TO GOOD
(381-547) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....60-69.
* MAX HUMIDITY........36-50 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 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 SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
* VENTILATION INDEX...POOR (87-183) DECREASING TO POOR (25-45)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....89-98...EXCEPT 82-87 RIDGES.
* MIN HUMIDITY........18-24 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 2 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......12000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-53) INCREASING TO FAIR TO GOOD
(341-587) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 59 TO 68. HIGHS 78 TO 90. SOUTHWEST
WINDS 4 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 51 TO 59. HIGHS 70 TO 81. WEST
WINDS 5 TO 11 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 57. HIGHS 69 TO 80. SOUTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. PARTLY
CLOUDY. LOWS 51 TO 58. HIGHS 69 TO 80. SOUTHWEST WINDS 2 TO
7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 50 TO 57. HIGHS 70 TO 81. WEST
WINDS 2 TO 7 MPH.
ORZ693-WAZ693-112330-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....88-97...EXCEPT 82-90 RIDGES.
* MIN HUMIDITY........16-21 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......12000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (29-87) INCREASING TO FAIR TO GOOD
(386-530) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....58-68.
* MAX HUMIDITY........41-56 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING WEST 2
TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
* VENTILATION INDEX...POOR TO FAIR (137-229) DECREASING TO POOR
(25-49) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....89-99...EXCEPT 83-90 RIDGES.
* MIN HUMIDITY........16-21 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13500 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-59) INCREASING TO GOOD TO EXCELLENT
(544-790) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 57 TO 67. HIGHS 82 TO 92. WEST
WINDS 4 TO 9 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 49 TO 60. HIGHS 75 TO 85. WEST
WINDS 4 TO 9 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 47 TO 57. HIGHS 75 TO 84. WEST
WINDS 2 TO 7 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. PARTLY
CLOUDY. LOWS 49 TO 59. HIGHS 73 TO 83. WEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 50 TO 59. HIGHS 75 TO 84. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ701-112330-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....98-103...EXCEPT 93-98 RIDGES.
* MIN HUMIDITY........17-24 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH. IN THE EASTERN
COLUMBIA RIVER GORGE, UPSLOPE LESS THAN 5 MPH BECOMING NORTH
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.......9000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-53) INCREASING TO POOR TO FAIR
(136-254) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....64-70.
* MAX HUMIDITY........44-59 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. IN THE EASTERN
COLUMBIA RIVER GORGE, WEST WINDS 2 TO 7 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 TO FAIR (196-298) DECREASING TO POOR
(27-77) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....95-100.
* MIN HUMIDITY........21-31 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 1 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 (25-63) INCREASING TO POOR TO FAIR
(114-304) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
NOT AS WARM. CLEAR. LOWS 61 TO 67. HIGHS 81 TO 87.
WEST WINDS 7 TO 13 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 51 TO 58. HIGHS 75 TO 81. WEST
WINDS 7 TO 13 MPH.
FRIDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 53 TO
59. HIGHS 71 TO 77. WEST WINDS 6 TO 12 MPH.
SATURDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS 54 TO
60. HIGHS 72 TO 78. WEST WINDS 3 TO 8 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 51 TO 57. HIGHS 75 TO 80. WEST
WINDS 3 TO 8 MPH.
ORZ702-112330-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....95-100...EXCEPT 87-95 RIDGES.
* MIN HUMIDITY........17-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-50) INCREASING TO POOR TO FAIR
(152-246) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....61-69.
* MAX HUMIDITY........39-53 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 TO FAIR (92-232) DECREASING TO POOR
(25-48) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....92-99...EXCEPT 84-94 RIDGES.
* MIN HUMIDITY........21-32 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-43) INCREASING TO POOR TO FAIR
(73-263) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
NOT AS WARM. CLEAR. LOWS 55 TO 64. HIGHS 71 TO 86.
WEST WINDS 2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 47 TO 55. HIGHS 66 TO 80. WEST
WINDS 2 TO 7 MPH.
FRIDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 48 TO
55. HIGHS 62 TO 76. WEST WINDS 2 TO 7 MPH.
SATURDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS 49 TO
57. HIGHS 62 TO 76. WEST WINDS UP TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 47 TO 54. HIGHS 65 TO 80. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ695-112330-
EAGLE CAP WILDERNESS-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....84-94...EXCEPT 73-83 RIDGES.
* MIN HUMIDITY........18-27 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.....NORTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-59) INCREASING TO FAIR (295-409) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....60-66...EXCEPT 55-62 RIDGES.
* MAX HUMIDITY........38-48 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 1 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR TO FAIR (111-205) DECREASING TO POOR
(25-55) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....85-96...EXCEPT 74-86 RIDGES.
* MIN HUMIDITY........17-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 5
MPH IN THE AFTERNOON.
* 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.......13000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-50) INCREASING TO GOOD TO EXCELLENT
(555-849) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 53 TO 63. HIGHS 73 TO 88. WEST
WINDS 3 TO 8 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 55. HIGHS 66 TO 81.
NORTHWEST WINDS 4 TO 9 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 44 TO 54. HIGHS 65 TO 80. NORTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. PARTLY
CLOUDY. LOWS 46 TO 55. HIGHS 64 TO 79. WEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 46 TO 55. HIGHS 66 TO 81. WEST
WINDS 1 TO 5 MPH.
ORZ694-112330-
GRANDE RONDE VALLEY OF OREGON-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....94-99.
* MIN HUMIDITY........14-19 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.....SOUTHWEST AROUND 5 MPH SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (26-52) INCREASING TO FAIR (373-451) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....58-63.
* MAX HUMIDITY........47-59 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 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.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (198-254) DECREASING TO POOR
(31-59) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....95-100.
* MIN HUMIDITY........15-20 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 2 TO 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (28-48) INCREASING TO FAIR TO GOOD
(466-598) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 58 TO 63. HIGHS 89 TO 94. WEST WINDS
4 TO 9 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 51 TO 56. HIGHS 81 TO 86.
NORTHWEST WINDS 5 TO 11 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 54. HIGHS 80 TO 85. NORTHWEST
WINDS 3 TO 8 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. PARTLY
CLOUDY. LOWS 52 TO 57. HIGHS 79 TO 84. WEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS 80 TO 85. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ699-112330-
WESTERN FORESTED BLUE MOUNTAINS-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....88-95...EXCEPT 82-89 RIDGES.
* MIN HUMIDITY........16-22 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE NORTHWEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-49) INCREASING TO FAIR (323-431) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....58-65.
* MAX HUMIDITY........39-49 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (130-234) DECREASING TO POOR
(25-51) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....89-95...EXCEPT 82-89 RIDGES.
* MIN HUMIDITY........17-23 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......12500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-43) INCREASING TO FAIR TO EXCELLENT
(411-771) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 55 TO 61. HIGHS 78 TO 87. WEST WINDS
2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 48 TO 54. HIGHS 71 TO 80. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 46 TO 52. HIGHS 70 TO 78. WEST
WINDS 2 TO 7 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. PARTLY
CLOUDY. LOWS 48 TO 54. HIGHS 69 TO 78. SOUTHWEST WINDS 1 TO
5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 48 TO 53. HIGHS 70 TO 80. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ696-112330-
JOHN DAY VALLEY-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....92-99...EXCEPT 87-92 RIDGES.
* 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.......11000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-60) INCREASING TO FAIR (306-406) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....61-67.
* MAX HUMIDITY........38-48 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 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.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (179-305) DECREASING TO POOR
(25-62) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....92-100...EXCEPT 87-92 RIDGES.
* MIN HUMIDITY........13-18 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......13000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-48) INCREASING TO FAIR TO EXCELLENT
(336-724) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 58 TO 64. HIGHS 84 TO 92. WEST WINDS
2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 51 TO 57. HIGHS 76 TO 85. WEST
WINDS 4 TO 9 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 55. HIGHS 75 TO 83. WEST
WINDS 2 TO 7 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. PARTLY
CLOUDY. LOWS 51 TO 57. HIGHS 74 TO 83. SOUTHWEST WINDS 2 TO
7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 50 TO 56. HIGHS 77 TO 85. WEST
WINDS 1 TO 6 MPH.
ORZ700-112330-
CENTRAL MOUNTAINS OF OREGON-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....93-100...EXCEPT 86-92 RIDGES.
* MIN HUMIDITY........10-15 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE WEST IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (25-51) INCREASING TO FAIR TO GOOD
(342-506) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....56-65.
* MAX HUMIDITY........39-52 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (269-473) DECREASING TO POOR (25-45)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....92-98...EXCEPT 86-92 RIDGES.
* MIN HUMIDITY........12-17 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......12500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-37) INCREASING TO FAIR TO EXCELLENT
(374-722) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 53 TO 61. HIGHS 85 TO 90. WEST WINDS
4 TO 9 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 54. HIGHS 78 TO 84. WEST
WINDS 5 TO 11 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 44 TO 53. HIGHS 75 TO 81. WEST
WINDS 3 TO 8 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 47 TO
55. HIGHS 75 TO 81. SOUTHWEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 46 TO 53. HIGHS 78 TO 83. WEST
WINDS 2 TO 7 MPH.
ORZ703-112330-
WARM SPRINGS RESERVATION-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....96-103...EXCEPT 85-94 RIDGES.
* MIN HUMIDITY........13-19 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 1 TO 5 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (28-58) INCREASING TO FAIR (243-333) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....63-68.
* MAX HUMIDITY........40-49 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 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...FAIR (211-415) DECREASING TO POOR (25-50)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....94-102...EXCEPT 82-92 RIDGES.
* MIN HUMIDITY........18-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 2 TO
7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-54) INCREASING TO FAIR (234-366) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
NOT AS WARM. CLEAR. LOWS 59 TO 64. HIGHS 78 TO 92.
WEST WINDS 5 TO 11 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 51 TO 56. HIGHS 72 TO 86. WEST
WINDS 7 TO 13 MPH.
FRIDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 51 TO
56. HIGHS 68 TO 81. WEST WINDS 4 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
53 TO 58. HIGHS 68 TO 82. WEST WINDS 3 TO 8 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 72 TO 84. WEST
WINDS 2 TO 7 MPH.
ORZ704-112330-
NORTHERN DESCHUTES NATIONAL FOREST-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........SUNNY.
* MAX TEMPERATURE.....95-101...EXCEPT 82-93 RIDGES.
* MIN HUMIDITY........15-23 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 1 TO 6 MPH SHIFTING TO THE WEST
1 TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (28-64) INCREASING TO FAIR TO GOOD
(364-524) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....58-63.
* MAX HUMIDITY........41-50 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (180-352) DECREASING TO POOR
(25-50) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....93-99...EXCEPT 79-90 RIDGES.
* MIN HUMIDITY........18-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 7 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-57) INCREASING TO FAIR (320-484) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 54 TO 60. HIGHS 76 TO 89. WEST WINDS
4 TO 9 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 47 TO 53. HIGHS 70 TO 83. WEST
WINDS 4 TO 10 MPH.
FRIDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
46 TO 52. HIGHS 65 TO 78. WEST WINDS 4 TO 9 MPH.
SATURDAY
A CHANCE OF SHOWERS. MOSTLY CLOUDY. LOWS 48 TO 54.
HIGHS 66 TO 79. WEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
46 TO 52. HIGHS 68 TO 81. WEST WINDS 2 TO 7 MPH.
ORZ705-112330-
SOUTHERN DESCHUTES NATIONAL FOREST-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....90-95...EXCEPT 81-89 RIDGES.
* MIN HUMIDITY........15-22 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-45) INCREASING TO FAIR TO GOOD
(462-572) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....52-60.
* MAX HUMIDITY........47-62 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 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.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...FAIR (209-431) DECREASING TO POOR (25-40)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....89-94...EXCEPT 79-87 RIDGES.
* MIN HUMIDITY........15-22 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING WEST 1 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-40) INCREASING TO FAIR TO EXCELLENT
(490-748) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 48 TO 55. HIGHS 77 TO 87. WEST
WINDS 2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 43 TO 49. HIGHS 71 TO 81. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 41 TO 48. HIGHS 67 TO 77. WEST
WINDS 2 TO 7 MPH.
SATURDAY
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. PARTLY
CLOUDY. LOWS 44 TO 49. HIGHS 67 TO 77. WEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 70 TO 80. WEST
WINDS 1 TO 5 MPH.
ORZ697-112330-
CENTRAL BLUE MOUNTAINS-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....87-92...EXCEPT 82-88 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.......9500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-40) INCREASING TO FAIR (374-484) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....56-62.
* MAX HUMIDITY........39-49 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...POOR TO FAIR (128-218) DECREASING TO POOR
(25-51) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....89-94...EXCEPT 83-89 RIDGES.
* MIN HUMIDITY........15-20 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTHWEST 1
TO 5 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......12500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH INCREASING TO
SOUTHWEST AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-41) INCREASING TO EXCELLENT
(794-1018) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 52 TO 58. HIGHS 79 TO 87. WEST
WINDS 2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 51. HIGHS 73 TO 80.
NORTHWEST WINDS 2 TO 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 44 TO 50. HIGHS 72 TO 78. NORTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 71 TO 78. WEST
WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 46 TO 52. HIGHS 73 TO 80. WEST
WINDS 1 TO 5 MPH.
ORZ698-112330-
SOUTHERN BLUE MOUNTAINS-
657 AM PDT MON AUG 11 2025
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....88-94.
* 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.......10000 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE WEST IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (25-32) INCREASING TO FAIR (394-480) IN
THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....57-62.
* MAX HUMIDITY........37-46 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT POOR RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR TO FAIR (143-239) DECREASING TO POOR
(25-56) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....90-97.
* MIN HUMIDITY........11-16 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHWEST 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.......13000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH INCREASING TO
SOUTHWEST AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-41) INCREASING TO EXCELLENT
(730-978) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 53 TO 59. HIGHS 84 TO 91.
NORTHWEST WINDS 2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 53. HIGHS 77 TO 85.
NORTHWEST WINDS 3 TO 8 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 45 TO 51. HIGHS 76 TO 83. NORTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 47 TO 53. HIGHS 76 TO 83. WEST
WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 47 TO 52. HIGHS 78 TO 84. WEST
WINDS 2 TO 7 MPH.
8-14 DAY OUTLOOK FOR MONDAY AUGUST 18 THROUGH SUNDAY AUGUST 24
A GREATER CHANCE OF NEAR TO ABOVE NORMAL TEMPERATURES AND BELOW
NORMAL PRECIPITATION.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page