356
FNUS56 KPDT 162058
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
158 PM PDT TUE SEP 16 2025
DISCUSSION
HIGH PRESSURE WILL REMAIN OVER THE PACIFIC NORTHWEST
THROUGH WEDNESDAY. LOCALLY BREEZY CONDITIONS ARE EXPECTED OVER THE
CASCADE GAPS TODAY. A TROUGH WILL APPROACH THE REGION BY THURSDAY
AND MOVE ACROSS THE AREA BY LATE IN THE WEEK. VERY LITTLE, IF ANY
RAIN IS EXPECTED BEFORE THE WEEKEND.
MIN RH VALUES WILL MAINLY BE IN THE 20S AND 30S, EXCEPT FOR SOME
TEENS AND 20S IN CENTRAL OREGON AND THE JOHN DAY BASIN.
HIGH TEMPERATURES WILL AVERAGE ABOUT 10 DEGREES ABOVE NORMAL
THROUGH THE END OF THE WEEK.
***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.
WAZ695-171130-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-55.
* MAX HUMIDITY........53-68 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST 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 (37-185) DECREASING TO POOR (25-75)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....76-83...EXCEPT 67-75 RIDGES.
* MIN HUMIDITY........27-38 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.......7500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-69) INCREASING TO POOR TO FAIR
(147-291) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....47-54.
* MAX HUMIDITY........66-81 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 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 AROUND 10 MPH.
* VENTILATION INDEX...POOR (25-130) DECREASING TO POOR (25-83)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....74-82...EXCEPT 66-74 RIDGES.
* MIN HUMIDITY........30-44 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.....NORTHWEST AROUND 5 MPH SHIFTING TO THE SOUTH
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-73) INCREASING TO POOR TO FAIR
(127-259) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 55. HIGHS 68 TO 81. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 60 TO 73. WEST
WINDS 2 TO 7 MPH.
SUNDAY
A CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 46 TO 52.
HIGHS 56 TO 69. WEST WINDS 3 TO 8 MPH.
MONDAY
A SLIGHT CHANCE OF SHOWERS. MOSTLY CLEAR. LOWS 43 TO
49. HIGHS 62 TO 75. WEST WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
47 TO 53. HIGHS 64 TO 77. SOUTHWEST WINDS 1 TO 5 MPH.
WAZ690-171130-
KITTITAS VALLEY-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....51-59.
* MAX HUMIDITY........56-71 PERCENT...EXCEPT 49-58 PERCENT RIDGES.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....EAST 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.....EAST AROUND 5 MPH SHIFTING TO THE NORTH AFTER
MIDNIGHT.
* VENTILATION INDEX...POOR (32-112) DECREASING TO POOR (25-54)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-87...EXCEPT 72-82 RIDGES.
* MIN HUMIDITY........26-31 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.......6500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE SOUTHEAST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-58) INCREASING TO POOR TO FAIR
(143-249) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....53-60.
* MAX HUMIDITY........60-75 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
NORTHWEST 1 TO 6 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
NORTHWEST 2 TO 7 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (25-126) DECREASING TO POOR (29-109)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-86...EXCEPT 72-82 RIDGES.
* MIN HUMIDITY........29-34 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH IN THE MORNING
BECOMING UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-88) INCREASING TO POOR TO FAIR
(64-210) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
MOSTLY CLEAR. LOWS 54 TO 61. HIGHS 80 TO 86. NORTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 52 TO 58. HIGHS 74 TO 82. WEST
WINDS 4 TO 10 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
52 TO 58. HIGHS 70 TO 77. WEST WINDS 6 TO 12 MPH.
MONDAY
MOSTLY CLEAR. LOWS 47 TO 53. HIGHS 72 TO 79. WEST WINDS
4 TO 9 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 51 TO 57. HIGHS 74 TO 80.
NORTHWEST WINDS 2 TO 7 MPH.
WAZ694-171130-
YAKAMA ALPINE DISTRICT-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-56.
* MAX HUMIDITY........54-69 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 1 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 1 TO 6 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (31-109) DECREASING TO POOR (25-55)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-85...EXCEPT 70-80 RIDGES.
* MIN HUMIDITY........26-35 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.......6500 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH SHIFTING TO THE SOUTH IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (25-42) INCREASING TO POOR TO FAIR
(129-233) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-57.
* MAX HUMIDITY........64-79 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE 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.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-77) DECREASING TO POOR (25-48) AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-84...EXCEPT 70-80 RIDGES.
* MIN HUMIDITY........29-41 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.......6500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH SHIFTING TO THE SOUTH
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-39) INCREASING TO POOR TO FAIR
(114-220) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 57. HIGHS 73 TO 84. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 47 TO 54. HIGHS 66 TO 78. WEST
WINDS 2 TO 7 MPH.
SUNDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 47 TO
55. HIGHS 62 TO 74. WEST WINDS 4 TO 9 MPH.
MONDAY
MOSTLY CLEAR. LOWS 44 TO 50. HIGHS 67 TO 79. SOUTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
49 TO 55. HIGHS 69 TO 79. SOUTHWEST WINDS 1 TO 6 MPH.
ORZ691-WAZ691-171130-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....52-57.
* MAX HUMIDITY........62-77 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (39-105) DECREASING TO POOR (25-44)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....82-87.
* MIN HUMIDITY........25-32 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 1 TO 5 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH SHIFTING TO THE
NORTHEAST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-40) INCREASING TO POOR (75-143) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....53-58.
* MAX HUMIDITY........66-81 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....EAST 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 AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-92) DECREASING TO POOR (25-54) AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-87.
* MIN HUMIDITY........29-36 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 1 TO 5 MPH IN THE MORNING
BECOMING UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 6 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-50) INCREASING TO POOR (69-151) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 54 TO 59. HIGHS 81 TO 86. WEST
WINDS 1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 53 TO 58. HIGHS 77 TO 84.
SOUTHWEST WINDS 5 TO 11 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 54 TO 59. HIGHS 75 TO 80. SOUTHWEST
WINDS 7 TO 13 MPH.
MONDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 77 TO 82. SOUTHWEST
WINDS 4 TO 9 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 77 TO 82. WEST
WINDS 2 TO 7 MPH.
ORZ692-WAZ692-171130-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........CLEAR.
* MIN TEMPERATURE.....47-59.
* MAX HUMIDITY........53-68 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
SOUTHEAST 1 TO 6 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 (34-108) DECREASING TO POOR (25-71)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-85...EXCEPT 72-77 RIDGES.
* MIN HUMIDITY........24-31 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 1 TO 5 MPH IN THE MORNING
BECOMING 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.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-81) INCREASING TO POOR TO FAIR
(133-289) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-59.
* MAX HUMIDITY........51-66 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.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-54) DECREASING TO POOR (25-42) AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-86...EXCEPT 72-78 RIDGES.
* MIN HUMIDITY........25-34 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.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-41) INCREASING TO POOR TO FAIR
(126-246) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 51 TO 60. HIGHS 74 TO 83. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 50 TO 57. HIGHS 70 TO 80.
SOUTHWEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
50 TO 57. HIGHS 64 TO 75. SOUTHWEST WINDS 3 TO 8 MPH.
MONDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 69 TO 79. SOUTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 49 TO 56. HIGHS 72 TO 82. SOUTHWEST
WINDS 1 TO 6 MPH.
ORZ693-WAZ693-171130-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-56.
* MAX HUMIDITY........60-75 PERCENT...EXCEPT 53-60 PERCENT RIDGES.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING SOUTH 2
TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (27-77) DECREASING TO POOR (25-62) AFTER
MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-85...EXCEPT 71-77 RIDGES.
* MIN HUMIDITY........25-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 2 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.....SOUTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-73) INCREASING TO POOR TO FAIR
(106-258) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-58.
* MAX HUMIDITY........55-70 PERCENT...EXCEPT 49-56 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 BECOMING SOUTH 2
TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE SOUTH
AFTER MIDNIGHT.
* VENTILATION INDEX...POOR (25-69) DECREASING TO POOR (25-59) AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-88...EXCEPT 73-79 RIDGES.
* MIN HUMIDITY........23-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 2 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.....SOUTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-56) INCREASING TO POOR TO FAIR
(135-277) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 50 TO 60. HIGHS 77 TO 86. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 47 TO 57. HIGHS 73 TO 83. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
47 TO 57. HIGHS 67 TO 77. WEST WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 42 TO 52. HIGHS 72 TO 81. SOUTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 46 TO 56. HIGHS 75 TO 84. SOUTH
WINDS 1 TO 5 MPH.
ORZ701-171130-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....51-56.
* MAX HUMIDITY........59-74 PERCENT...EXCEPT 55-63 PERCENT RIDGES.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH AFTER
MIDNIGHT. WINDS EAST WINDS 2 TO 7 MPH IN THE EVENING.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....EAST AROUND 10 MPH SHIFTING TO THE WEST AFTER
MIDNIGHT.
* VENTILATION INDEX...POOR (81-161) DECREASING TO POOR (25-51)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-85.
* MIN HUMIDITY........28-43 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH. UPSLOPE LESS THAN 5
MPH IN THE MORNING. IN THE EASTERN COLUMBIA RIVER GORGE, WEST
WINDS 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.......5000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-43) INCREASING TO POOR TO FAIR
(114-222) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....51-56.
* MAX HUMIDITY........75-90 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING WEST
1 TO 5 MPH AFTER MIDNIGHT. IN THE EASTERN COLUMBIA RIVER
GORGE, WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING WEST 1
TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (82-196) DECREASING TO POOR (25-107)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-84.
* MIN HUMIDITY........33-48 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 1 TO 5 MPH IN THE MORNING
BECOMING UPSLOPE LESS THAN 5 MPH. IN THE EASTERN COLUMBIA
RIVER GORGE, WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-99) INCREASING TO POOR TO FAIR
(115-203) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 80 TO 85. WEST
WINDS 1 TO 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 74 TO 80. WEST
WINDS 4 TO 9 MPH.
SUNDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 52 TO
57. HIGHS 71 TO 77. WEST WINDS 4 TO 10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 77 TO 82. WEST WINDS
3 TO 8 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
52 TO 57. HIGHS 77 TO 82. WEST WINDS 1 TO 6 MPH.
ORZ702-171130-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-57.
* MAX HUMIDITY........51-66 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.....EAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (36-112) DECREASING TO POOR (25-48)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-85...EXCEPT 72-80 RIDGES.
* MIN HUMIDITY........28-37 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.......4500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-33) INCREASING TO POOR (54-118) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....48-55.
* MAX HUMIDITY........62-77 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 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 AROUND 10 MPH.
* VENTILATION INDEX...POOR (28-98) DECREASING TO POOR (25-52) AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-83...EXCEPT 70-79 RIDGES.
* MIN HUMIDITY........34-45 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.......4500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH SHIFTING TO THE SOUTHEAST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-37) INCREASING TO POOR (81-153) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 50 TO 57. HIGHS 72 TO 84. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 47 TO 54. HIGHS 65 TO 79. WEST
WINDS 1 TO 5 MPH.
SUNDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 48 TO
55. HIGHS 62 TO 75. WEST WINDS 1 TO 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 69 TO 80. SOUTHWEST
WINDS UP TO 5 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
51 TO 57. HIGHS 69 TO 81. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
ORZ695-171130-
EAGLE CAP WILDERNESS-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-55...EXCEPT 44-51 RIDGES.
* MAX HUMIDITY........51-64 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 BECOMING
SOUTHEAST 2 TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-77) DECREASING TO POOR (25-65) AFTER
MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....72-82...EXCEPT 62-71 RIDGES.
* MIN HUMIDITY........25-37 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTH 2 TO
5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTH WINDS 2 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-82) INCREASING TO POOR TO FAIR
(136-292) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-57...EXCEPT 45-53 RIDGES.
* MAX HUMIDITY........47-60 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.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-52).
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....74-84...EXCEPT 63-73 RIDGES.
* MIN HUMIDITY........24-33 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.....SOUTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-48) INCREASING TO POOR TO FAIR
(183-315) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 57. HIGHS 67 TO 81. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 45 TO 54. HIGHS 63 TO 77. WEST
WINDS 1 TO 5 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
43 TO 52. HIGHS 57 TO 72. WEST WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 40 TO 49. HIGHS 62 TO 76. SOUTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 46 TO 54. HIGHS 64 TO 79. SOUTH
WINDS 1 TO 5 MPH.
ORZ694-171130-
GRANDE RONDE VALLEY OF OREGON-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....43-49.
* MAX HUMIDITY........67-82 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 2 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 3 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (78-132) DECREASING TO POOR (35-71)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-85.
* MIN HUMIDITY........21-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 2 TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 2 TO 6 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 10 MPH.
* VENTILATION INDEX...POOR (50-100) INCREASING TO FAIR (382-496) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-50.
* MAX HUMIDITY........63-78 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE 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.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (49-85) DECREASING TO POOR (29-57) AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....83-88.
* MIN HUMIDITY........20-25 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 SOUTHEAST 3
TO 6 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (27-51) INCREASING TO FAIR (280-400) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 48 TO 53. HIGHS 82 TO 87. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 47 TO 52. HIGHS 79 TO 84. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
47 TO 52. HIGHS 73 TO 78. WEST WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 77 TO 82. SOUTH
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 47 TO 52. HIGHS 79 TO 84. SOUTH
WINDS 1 TO 6 MPH.
ORZ699-171130-
WESTERN FORESTED BLUE MOUNTAINS-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....44-53.
* MAX HUMIDITY........47-61 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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 1 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 (57-141) DECREASING TO POOR (25-63)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-83...EXCEPT 71-78 RIDGES.
* MIN HUMIDITY........20-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 1 TO 6 MPH IN THE MORNING
BECOMING LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-70) INCREASING TO POOR TO FAIR
(159-285) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....47-54.
* MAX HUMIDITY........45-60 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 BECOMING
SOUTHEAST 1 TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (37-91) DECREASING TO POOR (25-51) AFTER
MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-85...EXCEPT 72-79 RIDGES.
* MIN HUMIDITY........21-28 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.......9000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-45) INCREASING TO POOR TO FAIR
(174-330) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 56. HIGHS 73 TO 82. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 47 TO 54. HIGHS 69 TO 77. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
46 TO 52. HIGHS 64 TO 73. WEST WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 43 TO 49. HIGHS 69 TO 78. SOUTHWEST
WINDS 1 TO 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 48 TO 54. HIGHS 71 TO 80. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ696-171130-
JOHN DAY VALLEY-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....47-54.
* MAX HUMIDITY........47-60 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH BECOMING
SOUTHEAST 2 TO 6 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING
SOUTHEAST 3 TO 7 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.
* VENTILATION INDEX...POOR (91-183) DECREASING TO POOR (25-87)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-87...EXCEPT 75-80 RIDGES.
* MIN HUMIDITY........17-22 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 2 TO 5 MPH IN THE MORNING
BECOMING UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 2 TO 6 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.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-83) INCREASING TO POOR TO FAIR
(158-290) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-55.
* MAX HUMIDITY........50-62 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.....EAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (50-118) DECREASING TO POOR (25-60)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-89...EXCEPT 76-81 RIDGES.
* MIN HUMIDITY........19-25 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.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-50) INCREASING TO POOR TO FAIR
(130-296) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 78 TO 86. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 74 TO 82. WEST
WINDS 1 TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 49 TO 55. HIGHS 70 TO 78. WEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 75 TO 83. SOUTH
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 50 TO 56. HIGHS 77 TO 85. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ700-171130-
CENTRAL MOUNTAINS OF OREGON-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....41-52.
* MAX HUMIDITY........54-69 PERCENT...EXCEPT 44-53 PERCENT RIDGES.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...EAST WINDS 1 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST 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.....SOUTHEAST AROUND 10 MPH.
* VENTILATION INDEX...POOR (85-183) DECREASING TO POOR (25-58)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-85...EXCEPT 74-80 RIDGES.
* MIN HUMIDITY........16-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-59) INCREASING TO POOR TO FAIR
(119-323) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....43-52...EXCEPT 49-54 RIDGES.
* MAX HUMIDITY........62-77 PERCENT...EXCEPT 48-59 PERCENT RIDGES.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 1 TO 5 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....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 (71-149) DECREASING TO POOR (25-41)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....81-86...EXCEPT 75-81 RIDGES.
* MIN HUMIDITY........17-32 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.......8000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-35) INCREASING TO POOR TO FAIR
(134-326) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 46 TO 54. HIGHS 78 TO 84. NORTHWEST
WINDS 2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 45 TO 52. HIGHS 74 TO 79. WEST
WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 43 TO 52. HIGHS 71 TO 77. WEST
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 41 TO 49. HIGHS 77 TO 82. SOUTH
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 46 TO 54. HIGHS 76 TO 82. SOUTH
WINDS 1 TO 5 MPH.
ORZ703-171130-
WARM SPRINGS RESERVATION-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........56-70 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 1 TO 5 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (55-131) DECREASING TO POOR (25-42)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-86...EXCEPT 70-78 RIDGES.
* MIN HUMIDITY........24-32 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.......6000 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE EAST IN
THE AFTERNOON.
* VENTILATION INDEX...POOR (25-33) INCREASING TO POOR (58-114) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....49-54.
* MAX HUMIDITY........65-79 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 5 MPH.
* RIDGES/UPR SLOPES....LIGHT WINDS LESS THAN 5 MPH BECOMING WEST 2
TO 6 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (61-147) DECREASING TO POOR (25-51)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-85...EXCEPT 69-77 RIDGES.
* MIN HUMIDITY........30-35 PERCENT...EXCEPT 37-46 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.......5000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 5 MPH SHIFTING TO THE EAST IN THE
AFTERNOON.
* VENTILATION INDEX...POOR (25-34) INCREASING TO POOR (115-179) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS 77 TO 86. NORTHWEST
WINDS 1 TO 6 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 71 TO 82. WEST
WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
51 TO 56. HIGHS 69 TO 79. WEST WINDS 4 TO 9 MPH.
MONDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 75 TO 83. SOUTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
52 TO 57. HIGHS 74 TO 83. SOUTHWEST WINDS 1 TO 5 MPH.
ORZ704-171130-
NORTHERN DESCHUTES NATIONAL FOREST-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....44-51.
* MAX HUMIDITY........62-74 PERCENT...EXCEPT 46-61 PERCENT RIDGES.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 1 TO 5 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...POOR (41-105) DECREASING TO POOR (25-35)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-86...EXCEPT 68-77 RIDGES.
* MIN HUMIDITY........23-28 PERCENT...EXCEPT 27-39 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.......6000 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE NORTHWEST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-32) INCREASING TO POOR (82-172) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....44-50.
* MAX HUMIDITY........72-82 PERCENT...EXCEPT 60-75 PERCENT RIDGES.
* HUMIDITY RECOVERY...GOOD.
* 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 (55-127) DECREASING TO POOR (25-37)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-84...EXCEPT 68-76 RIDGES.
* MIN HUMIDITY........28-35 PERCENT...EXCEPT 34-46 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.......5500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE SOUTHEAST
IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-35) INCREASING TO POOR TO FAIR
(132-202) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 46 TO 53. HIGHS 72 TO 85. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 43 TO 50. HIGHS 66 TO 79. WEST
WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
44 TO 50. HIGHS 64 TO 77. WEST WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 42 TO 49. HIGHS 70 TO 82. SOUTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
46 TO 53. HIGHS 69 TO 82. SOUTHWEST WINDS 1 TO 5 MPH.
ORZ705-171130-
SOUTHERN DESCHUTES NATIONAL FOREST-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....40-47...EXCEPT 45-52 RIDGES.
* MAX HUMIDITY........56-71 PERCENT...EXCEPT 41-55 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.....EAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (54-130) DECREASING TO POOR (25-40)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-83...EXCEPT 69-77 RIDGES.
* MIN HUMIDITY........17-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
* VENTILATION INDEX...POOR (25-32) INCREASING TO POOR TO FAIR
(164-280) IN THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....39-47.
* MAX HUMIDITY........71-86 PERCENT...EXCEPT 58-73 PERCENT RIDGES.
* HUMIDITY RECOVERY...GOOD.
* 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 (82-182) DECREASING TO POOR (25-42)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-83...EXCEPT 69-77 RIDGES.
* MIN HUMIDITY........19-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON.
* VENTILATION INDEX...POOR (25-30) INCREASING TO FAIR (203-325) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 42 TO 50. HIGHS 73 TO 82. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 40 TO 47. HIGHS 68 TO 76. WEST
WINDS 1 TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 40 TO 46. HIGHS 66 TO 76. WEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 38 TO 46. HIGHS 73 TO 80. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
43 TO 50. HIGHS 69 TO 78. TERRAIN DRIVEN WINDS LESS THAN 5 MPH.
ORZ697-171130-
CENTRAL BLUE MOUNTAINS-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....40-48.
* MAX HUMIDITY........53-68 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 BECOMING
SOUTHEAST 1 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 (61-155) DECREASING TO POOR (25-58)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....75-81...EXCEPT 70-77 RIDGES.
* MIN HUMIDITY........19-25 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.......8000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-68) INCREASING TO FAIR (203-339) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....44-51.
* MAX HUMIDITY........47-62 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 BECOMING
SOUTHEAST 1 TO 5 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
* VENTILATION INDEX...POOR (48-100) DECREASING TO POOR (25-48)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-83...EXCEPT 72-79 RIDGES.
* MIN HUMIDITY........19-24 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.......9000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (25-44) INCREASING TO FAIR (252-460) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
PARTLY CLOUDY. LOWS 46 TO 53. HIGHS 74 TO 81. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 45 TO 51. HIGHS 69 TO 76. WEST
WINDS 1 TO 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 42 TO 49. HIGHS 65 TO 72. WEST
WINDS 1 TO 6 MPH.
MONDAY
MOSTLY CLEAR. LOWS 40 TO 46. HIGHS 70 TO 77. SOUTHWEST
WINDS 1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 45 TO 51. HIGHS 70 TO 77. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ698-171130-
SOUTHERN BLUE MOUNTAINS-
158 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....37-46...EXCEPT 42-47 RIDGES.
* MAX HUMIDITY........57-72 PERCENT...EXCEPT 52-61 PERCENT RIDGES.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST 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.....EAST AROUND 10 MPH.
* VENTILATION INDEX...POOR (115-187) DECREASING TO POOR (25-59)
AFTER MIDNIGHT.
WEDNESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....75-80...EXCEPT 70-77 RIDGES.
* MIN HUMIDITY........16-21 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.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.
* VENTILATION INDEX...POOR (29-65) INCREASING TO FAIR (245-345) IN
THE AFTERNOON.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....44-49.
* MAX HUMIDITY........51-66 PERCENT...EXCEPT 47-55 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.....EAST AROUND 10 MPH.
* VENTILATION INDEX...POOR (79-147) DECREASING TO POOR (25-51)
AFTER MIDNIGHT.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....78-84.
* MIN HUMIDITY........15-20 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHEAST 3
TO 6 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING SOUTHEAST 3
TO 6 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 10 MPH.
* VENTILATION INDEX...POOR (25-48) INCREASING TO FAIR (314-454) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
FRIDAY
MOSTLY CLOUDY. LOWS 47 TO 52. HIGHS 77 TO 83. EAST
WINDS 1 TO 6 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 44 TO 50. HIGHS 73 TO 79.
NORTHWEST WINDS 2 TO 7 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 42 TO 48. HIGHS 70 TO 76. WEST
WINDS 2 TO 7 MPH.
MONDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 74 TO 80. SOUTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 45 TO 51. HIGHS 74 TO 79. SOUTH
WINDS 1 TO 6 MPH.
.8-14 DAY OUTLOOK FOR WEDNESDAY SEPTEMBER 24 THROUGH TUESDAY SEPTEMBER 30...
A GREATER CHANCE OF NEAR NORMAL TEMPERATURES AND ABOVE NORMAL
PRECIPITATION.
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