857
FNUS56 KPDT 041246
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
546 AM PDT MON MAY 4 2026
DISCUSSION
DRY AND WARM CONDITIONS PERSIST THROUGH THE WEEK AS
HIGH TEMPERATURES HOVER BETWEEN 10-20 DEGREES ABOVE NORMAL,
PEAKING TODAY AND WEDNESDAY. CONDITIONS WILL STAY DRY, WITH THE
NEXT CHANCE (10-20%) OF MOUNTAIN PRECIPITATION ON FRIDAY.
AFTERNOON HUMIDITIES BOTTOM-OUT ON THURSDAY IN THE LOW-TEENS
ACROSS CENTRAL OREGON, YAKIMA VALLEY, AND PORTIONS OF THE COLUMBIA
BASIN. BREEZY WINDS FRIDAY, WITH HUMIDITIES TRENDING DOWNWARD
THROUGH THE WEEKEND.
***WINDS ARE 20 FOOT 10 MINUTE AVERAGES ***
***CWR: CHANCE OF WETTING RAIN 0.10 OR GREATER ***
***VENTILATION INDEX IS DERIVED FROM TRANSPORT WIND
MULTIPLIED BY THE MIXING HEIGHT IN 100'S OF FT.
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.
CATEGORIES: LOW (< 200), MODERATE (200-500),
HIGH (500-700), AND VERY HIGH (> 700).
-NOTE: MAX TRANSPORT WINDS MAY NOT OCCUR
AT THE SAME TIME AS MAX MIXING HEIGHT. ***
WAZ695-042330-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....72-80...EXCEPT 64-71 RIDGES.
* MIN HUMIDITY........27-39 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...LOW (33-107) INCREASING TO MODERATE TO HIGH
(418-606) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-52.
* MAX HUMIDITY........62-77 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (131-319) DECREASING TO LOW
(25-80) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-77...EXCEPT 62-69 RIDGES.
* MIN HUMIDITY........33-46 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING EAST 1 TO 5
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...LOW (25-74) INCREASING TO MODERATE (209-355)
IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 44 TO 51. HIGHS 63 TO 75. WEST
WINDS 4 TO 9 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 40 TO 47. HIGHS 59 TO 73. WEST
WINDS 6 TO 12 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 39 TO 46. HIGHS 53 TO 65. WEST
WINDS 7 TO 13 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 36 TO 44. HIGHS 59 TO 70.
NORTHWEST WINDS 7 TO 13 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 64 TO 74. WEST
WINDS 2 TO 7 MPH.
WAZ690-042330-
KITTITAS VALLEY-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-85...EXCEPT 69-79 RIDGES.
* MIN HUMIDITY........21-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH.
* VENTILATION INDEX...LOW (85-187) INCREASING TO HIGH TO VERY HIGH
(627-889) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....53-58.
* MAX HUMIDITY........52-67 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE (316-420) DECREASING TO LOW (34-92)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....75-82...EXCEPT 66-76 RIDGES.
* MIN HUMIDITY........25-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.
* VENTILATION INDEX...LOW (50-116) INCREASING TO MODERATE (260-448)
IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 52 TO 57. HIGHS 77 TO 86. WEST
WINDS 5 TO 11 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 49 TO 54. HIGHS 73 TO 82.
NORTHWEST WINDS 9 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 54. HIGHS 67 TO 77. NORTHWEST
WINDS 11 TO 17 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 70 TO 79.
NORTHWEST WINDS 10 TO 16 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 47 TO 52. HIGHS 74 TO 82. WEST WINDS
3 TO 8 MPH.
WAZ694-042330-
YAKAMA ALPINE DISTRICT-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....76-82...EXCEPT 66-77 RIDGES.
* MIN HUMIDITY........24-37 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...LOW (37-97) INCREASING TO MODERATE (300-474)
IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....50-55...EXCEPT 45-52 RIDGES.
* MAX HUMIDITY........62-77 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (118-236) DECREASING TO LOW
(25-73) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....73-79...EXCEPT 64-74 RIDGES.
* MIN HUMIDITY........29-42 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING SOUTHEAST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 7 MPH SHIFTING TO THE
SOUTHEAST 2 TO 6 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...LOW (27-79) INCREASING TO LOW TO MODERATE
(145-319) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 46 TO 53. HIGHS 68 TO 80. WEST
WINDS 3 TO 8 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 42 TO 49. HIGHS 65 TO 77. WEST
WINDS 5 TO 11 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 42 TO 49. HIGHS 58 TO 70. WEST
WINDS 7 TO 13 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 38 TO 45. HIGHS 65 TO 75. WEST
WINDS 4 TO 10 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 42 TO 49. HIGHS 68 TO 80. WEST WINDS
1 TO 6 MPH.
ORZ691-WAZ691-042330-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-87.
* MIN HUMIDITY........20-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 3 TO
8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH.
* VENTILATION INDEX...LOW (31-103) INCREASING TO HIGH TO VERY HIGH
(510-838) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....52-57.
* MAX HUMIDITY........62-77 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH.
* VENTILATION INDEX...MODERATE (211-347) DECREASING TO LOW (25-62)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-84...EXCEPT 73-79 RIDGES.
* MIN HUMIDITY........24-32 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH.
* VENTILATION INDEX...LOW (42-102) INCREASING TO MODERATE TO HIGH
(368-570) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 51 TO 56. HIGHS 78 TO 88.
SOUTHWEST WINDS 5 TO 11 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 49 TO 56. HIGHS 76 TO 84. WEST
WINDS 7 TO 13 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 54. HIGHS 70 TO 80. WEST
WINDS 9 TO 15 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 73 TO 80. WEST
WINDS 6 TO 12 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 78 TO 85. WEST WINDS
1 TO 6 MPH.
ORZ692-WAZ692-042330-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-78...EXCEPT 63-68 RIDGES.
* MIN HUMIDITY........30-41 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 NORTHWEST 3
TO 7 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW (28-100) INCREASING TO MODERATE TO VERY
HIGH (411-757) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....46-52.
* MAX HUMIDITY........62-77 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 1 TO 6 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (115-245) DECREASING TO LOW
(25-58) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....66-75...EXCEPT 59-65 RIDGES.
* MIN HUMIDITY........32-42 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 3 TO
8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 3 TO 8
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...LOW (27-91) INCREASING TO MODERATE TO VERY
HIGH (464-770) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 45 TO 52. HIGHS 67 TO 78.
SOUTHWEST WINDS 4 TO 9 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 45 TO 52. HIGHS 65 TO 76.
SOUTHWEST WINDS 4 TO 9 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 44 TO 51. HIGHS 61 TO 72. SOUTHWEST
WINDS 6 TO 12 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 40 TO 46. HIGHS 61 TO 71. WEST
WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 43 TO 49. HIGHS 68 TO 78. SOUTHWEST
WINDS UP TO 5 MPH.
ORZ693-WAZ693-042330-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-79...EXCEPT 65-71 RIDGES.
* MIN HUMIDITY........25-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 4 TO
9 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 5 TO 11
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH INCREASING TO NORTH
AROUND 15 MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (31-97) INCREASING TO HIGH TO VERY HIGH
(689-919) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....43-49.
* MAX HUMIDITY........67-81 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 9 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 7 TO 13 MPH DECREASING TO 2 TO 7
MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...LOW TO MODERATE (194-352) DECREASING TO LOW
(25-70) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....65-74...EXCEPT 59-66 RIDGES.
* MIN HUMIDITY........28-34 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 6 TO
12 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 7 MPH INCREASING TO 9 TO 15
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 5 MPH INCREASING TO AROUND 15
MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-99) INCREASING TO HIGH TO VERY HIGH
(613-927) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 41 TO 49. HIGHS 69 TO 78.
SOUTHWEST WINDS 6 TO 12 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 44 TO 51. HIGHS 68 TO 78. WEST
WINDS 3 TO 8 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 42 TO 50. HIGHS 65 TO 74. WEST
WINDS 3 TO 8 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 39 TO 46. HIGHS 63 TO 72.
NORTHWEST WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 40 TO 47. HIGHS 71 TO 80. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ701-042330-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-84...EXCEPT 74-80 RIDGES.
* MIN HUMIDITY........28-41 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 3
TO 8 MPH IN THE AFTERNOON. IN THE EASTERN COLUMBIA RIVER
GORGE, WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...LOW (46-118) INCREASING TO MODERATE TO HIGH
(314-520) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....50-55.
* MAX HUMIDITY........75-87 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WINDS WEST WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 11 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (182-300) DECREASING TO LOW
(32-114) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....77-82...EXCEPT 72-78 RIDGES.
* MIN HUMIDITY........31-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WINDS 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.......7000 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (35-137) INCREASING TO LOW TO MODERATE
(188-288) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 75 TO 81. WEST
WINDS 4 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 48 TO 53. HIGHS 74 TO 79. WEST
WINDS 6 TO 12 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 47 TO 52. HIGHS 67 TO 72. WEST
WINDS 8 TO 14 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 72 TO 77. WEST
WINDS 5 TO 11 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 77 TO 82. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ702-042330-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....74-81...EXCEPT 68-77 RIDGES.
* MIN HUMIDITY........30-42 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 2 TO
5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 6 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* VENTILATION INDEX...LOW (32-82) INCREASING TO MODERATE (220-402)
IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-52.
* MAX HUMIDITY........73-88 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (89-223) DECREASING TO LOW
(25-68) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....73-79...EXCEPT 67-75 RIDGES.
* MIN HUMIDITY........32-43 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST 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.....NORTH AROUND 5 MPH.
* VENTILATION INDEX...LOW (25-60) INCREASING TO LOW TO MODERATE
(183-301) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 45 TO 51. HIGHS 67 TO 78. WEST
WINDS 3 TO 8 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 42 TO 49. HIGHS 64 TO 76. WEST
WINDS 4 TO 9 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 42 TO 48. HIGHS 57 TO 69. WEST
WINDS 4 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 38 TO 44. HIGHS 64 TO 74.
NORTHWEST WINDS 3 TO 8 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 42 TO 48. HIGHS 69 TO 79. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
ORZ695-042330-
EAGLE CAP WILDERNESS-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....67-77...EXCEPT 55-68 RIDGES.
* MIN HUMIDITY........27-39 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 3 TO 8 MPH INCREASING TO 8 TO 14
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...LOW (52-188) INCREASING TO HIGH TO VERY HIGH
(685-991) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-50...EXCEPT 37-45 RIDGES.
* MAX HUMIDITY........63-72 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 5 TO 11 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (179-401) DECREASING TO LOW
(25-110) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....63-73...EXCEPT 52-63 RIDGES.
* MIN HUMIDITY........29-42 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 7 MPH INCREASING TO 7 TO 13
MPH WITH GUSTS UP TO 25 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 9 TO 15 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTH 15 TO 20 MPH.
* VENTILATION INDEX...LOW TO MODERATE (45-209) INCREASING TO VERY
HIGH (789-1025) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 37 TO 46. HIGHS 59 TO 73.
NORTHWEST WINDS 7 TO 13 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 38 TO 47. HIGHS 58 TO 73. WEST
WINDS 4 TO 9 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 38 TO 46. HIGHS 55 TO 70. WEST
WINDS 3 TO 8 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 33 TO 43. HIGHS 54 TO 68.
NORTHWEST WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 36 TO 44. HIGHS 61 TO 75. WEST WINDS
2 TO 7 MPH.
ORZ694-042330-
GRANDE RONDE VALLEY OF OREGON-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....75-80.
* MIN HUMIDITY........26-31 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 1 TO 5 MPH INCREASING TO 7
TO 13 MPH WITH GUSTS UP TO 25 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 3 TO 6 MPH INCREASING TO 11 TO
17 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...LOW (72-152) INCREASING TO VERY HIGH
(939-1050) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....47-52.
* MAX HUMIDITY........70-82 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 8 TO 14 MPH WITH GUSTS UP TO
25 MPH DECREASING TO 2 TO 7 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 8 TO 14 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE (240-356) DECREASING TO LOW (52-98)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....72-77.
* MIN HUMIDITY........28-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 9 MPH INCREASING TO 10 TO
16 MPH WITH GUSTS UP TO 30 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 7 TO 13 MPH INCREASING TO
NORTH 14 TO 21 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH INCREASING TO AROUND 20
MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (94-178) INCREASING TO VERY HIGH
(912-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 75 TO 80.
NORTHWEST WINDS 7 TO 13 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 74 TO 79. WEST
WINDS 4 TO 9 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 70 TO 75. NORTHWEST
WINDS 3 TO 8 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 69 TO 74.
NORTHWEST WINDS 5 TO 11 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 75 TO 80. NORTHWEST
WINDS 3 TO 8 MPH.
ORZ699-042330-
WESTERN FORESTED BLUE MOUNTAINS-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-75...EXCEPT 63-70 RIDGES.
* MIN HUMIDITY........24-31 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 3 TO
8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH INCREASING TO AROUND 20
MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW TO MODERATE (62-200) INCREASING TO VERY
HIGH (917-1050) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....44-49.
* MAX HUMIDITY........64-79 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE (252-420) DECREASING TO LOW (25-73)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....67-72...EXCEPT 61-67 RIDGES.
* MIN HUMIDITY........29-38 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH SHIFTING TO THE
NORTH 7 TO 13 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH INCREASING TO AROUND 20
MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (25-171) INCREASING TO VERY HIGH
(809-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 67 TO 75. WEST
WINDS 4 TO 9 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 66 TO 74. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 62 TO 70. WEST
WINDS 2 TO 7 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 37 TO 42. HIGHS 62 TO 70.
NORTHWEST WINDS 2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 69 TO 77. WEST WINDS
1 TO 6 MPH.
ORZ696-042330-
JOHN DAY VALLEY-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....72-80...EXCEPT 68-73 RIDGES.
* MIN HUMIDITY........21-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 4 TO
9 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 6 TO 11
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11000 FT AGL.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...LOW (54-156) INCREASING TO VERY HIGH
(993-1050) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....45-50.
* MAX HUMIDITY........70-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 9 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH AROUND 15 MPH BECOMING NORTHWEST AROUND
5 MPH AFTER MIDNIGHT.
* VENTILATION INDEX...MODERATE TO HIGH (352-540) DECREASING TO LOW
(25-78) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-78...EXCEPT 65-70 RIDGES.
* MIN HUMIDITY........24-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 5 TO
11 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 6 MPH SHIFTING TO THE
NORTH 7 TO 12 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 10 MPH INCREASING TO AROUND 20
MPH IN THE AFTERNOON.
* VENTILATION INDEX...LOW (37-133) INCREASING TO VERY HIGH
(801-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 45 TO 50. HIGHS 73 TO 81. WEST WINDS
4 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 72 TO 80. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 67 TO 75. WEST
WINDS 3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 68 TO 76.
NORTHWEST WINDS 3 TO 8 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 75 TO 82. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ700-042330-
CENTRAL MOUNTAINS OF OREGON-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....74-80...EXCEPT 66-72 RIDGES.
* MIN HUMIDITY........20-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 4 TO
10 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 4 TO 9
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11000 FT AGL.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...LOW (47-189) INCREASING TO VERY HIGH
(941-1050) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....42-48.
* MAX HUMIDITY........80-90 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE TO VERY HIGH (475-729) DECREASING TO
LOW (25-65) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....72-79...EXCEPT 64-71 RIDGES.
* MIN HUMIDITY........23-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 4 TO
10 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...LOW (35-99) INCREASING TO HIGH TO VERY HIGH
(591-1013) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
CLEAR. LOWS 42 TO 49. HIGHS 75 TO 81. WEST WINDS
4 TO 9 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 74 TO 80. WEST
WINDS 3 TO 8 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 69 TO 75. WEST
WINDS 4 TO 9 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 36 TO 41. HIGHS 71 TO 77.
NORTHWEST WINDS 3 TO 8 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 40 TO 46. HIGHS 76 TO 82. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ703-042330-
WARM SPRINGS RESERVATION-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....76-84...EXCEPT 65-73 RIDGES.
* MIN HUMIDITY........24-31 PERCENT...EXCEPT 30-45 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 3 TO
8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...LOW (37-95) INCREASING TO MODERATE TO VERY
HIGH (439-747) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....50-55...EXCEPT 45-50 RIDGES.
* MAX HUMIDITY........77-88 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 10 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (191-401) DECREASING TO LOW
(25-76) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....75-82...EXCEPT 64-73 RIDGES.
* MIN HUMIDITY........25-34 PERCENT...EXCEPT 32-47 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHEAST 2
TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH SHIFTING TO THE
NORTHEAST IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...LOW (28-70) INCREASING TO MODERATE (332-456)
IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 46 TO 51. HIGHS 71 TO 83. WEST
WINDS 3 TO 8 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 70 TO 82. WEST
WINDS 5 TO 11 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 62 TO 75. WEST
WINDS 6 TO 12 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 69 TO 78.
NORTHWEST WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 73 TO 83. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ704-042330-
NORTHERN DESCHUTES NATIONAL FOREST-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....75-80...EXCEPT 62-72 RIDGES.
* MIN HUMIDITY........24-29 PERCENT...EXCEPT 29-44 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 2 TO
7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS UP TO 5 MPH INCREASING TO 5 TO
11 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...LOW (54-114) INCREASING TO HIGH TO VERY HIGH
(522-812) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....43-48.
* MAX HUMIDITY........79-94 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 8 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 7 TO 13 MPH SHIFTING TO THE
WEST 2 TO 7 MPH AFTER MIDNIGHT.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (164-324) DECREASING TO LOW
(25-74) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....74-79...EXCEPT 62-71 RIDGES.
* MIN HUMIDITY........29-34 PERCENT...EXCEPT 34-49 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHEAST 1
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTH 3 TO 8
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* VENTILATION INDEX...LOW (31-77) INCREASING TO MODERATE (361-491)
IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 68 TO 79. WEST
WINDS 2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 66 TO 78. WEST
WINDS 4 TO 9 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 60 TO 71. WEST
WINDS 5 TO 11 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 36 TO 41. HIGHS 66 TO 76.
NORTHWEST WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 71 TO 81. NORTH
WINDS 1 TO 6 MPH.
ORZ705-042330-
SOUTHERN DESCHUTES NATIONAL FOREST-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....71-76...EXCEPT 62-69 RIDGES.
* MIN HUMIDITY........21-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 3 TO
7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....10 PERCENT (VERY LOW CHANCE).
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (103-221) INCREASING TO VERY
HIGH (771-1050) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....40-45.
* MAX HUMIDITY........84-99 PERCENT.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 3 TO 8 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE TO VERY HIGH (244-712) DECREASING TO
LOW (29-71) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-75...EXCEPT 61-68 RIDGES.
* MIN HUMIDITY........26-33 PERCENT...EXCEPT 30-45 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 2 TO
7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...LOW (40-100) INCREASING TO HIGH TO VERY HIGH
(509-881) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 69 TO 78. WEST
WINDS 1 TO 6 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 68 TO 78. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 62 TO 72. WEST
WINDS 2 TO 7 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 34 TO 39. HIGHS 68 TO 77.
NORTHWEST WINDS 2 TO 7 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 74 TO 82. NORTH
WINDS UP TO 5 MPH.
ORZ697-042330-
CENTRAL BLUE MOUNTAINS-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-75...EXCEPT 65-70 RIDGES.
* MIN HUMIDITY........22-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 4 TO
9 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (130-278) INCREASING TO VERY
HIGH (1006-1050) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....42-47.
* MAX HUMIDITY........62-77 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
* VENTILATION INDEX...MODERATE TO HIGH (390-576) DECREASING TO LOW
(25-91) AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....67-72...EXCEPT 62-67 RIDGES.
* MIN HUMIDITY........26-31 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 5 TO 11 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....NORTH 15 TO 20 MPH.
* VENTILATION INDEX...LOW TO MODERATE (57-211) INCREASING TO VERY
HIGH (938-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 67 TO 74.
NORTHWEST WINDS 4 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 67 TO 75. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 64 TO 70. WEST
WINDS 3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 36 TO 41. HIGHS 63 TO 70.
NORTHWEST WINDS 4 TO 9 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 70 TO 77. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ698-042330-
SOUTHERN BLUE MOUNTAINS-
546 AM PDT MON MAY 4 2026
TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....70-75...EXCEPT 65-70 RIDGES.
* MIN HUMIDITY........18-23 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTH 5 TO
10 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11000 FT AGL.
* TRANSPORT WINDS.....NORTH AROUND 15 MPH.
* VENTILATION INDEX...LOW TO MODERATE (189-277) INCREASING TO VERY
HIGH (1049-1050) IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....42-47.
* MAX HUMIDITY........63-78 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 15 TO 20 MPH.
* VENTILATION INDEX...HIGH (513-657) DECREASING TO LOW (34-96)
AFTER MIDNIGHT.
TUESDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....68-74.
* MIN HUMIDITY........23-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH WINDS 2 TO 6 MPH INCREASING TO 6 TO 12
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTH WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTH 15 TO 20 MPH.
* VENTILATION INDEX...LOW (89-191) INCREASING TO VERY HIGH
(1020-1050) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 72 TO 78.
NORTHWEST WINDS 5 TO 11 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 72 TO 79.
NORTHWEST WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 68 TO 74. NORTHWEST
WINDS 3 TO 8 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 36 TO 41. HIGHS 68 TO 74.
NORTHWEST WINDS 3 TO 8 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 74 TO 79. WEST WINDS
UP TO 5 MPH.
8-14 DAY OUTLOOK FOR MONDAY MAY 11 THROUGH SUNDAY MAY 17
A GREATER CHANCE OF ABOVE NORMAL TEMPERATURES AND BELOW NORMAL
PRECIPITATION.
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