989
FNUS56 KPDT 182159
FWFPDT
FIRE WEATHER PLANNING FORECAST FOR NE OREGON AND SE WASHINGTON
NATIONAL WEATHER SERVICE PENDLETON OR
259 PM PDT FRI JUL 18 2025
...RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR
WA690, WA691, OR691, OR696, OR697, OR698, OR700, OR701, OR703 FOR
WIND AND LOW RELATIVE HUMIDITY......
DISCUSSION
CRITICAL FIRE WEATHER CONCERNS ASSOCIATED WITH THE
PASSING COLD FRONT CONTINUE THROUGH THIS EVENING, WITH THE
EXCEPTION OF THE NORTHEAST OREGON MOUNTAINS AND THE UPPER EAST
SLOPES OF THE CASCADES. HIGH CONFIDENCE (>85%) IN SUSTAINED WINDS
OF 15 MPH OR GREATER WITH MINIMUM RH'S OF 10-20%, WITH THE HIGHEST
WINDS EXPECTED IN THE GORGE TO THE EASTERN LOWER COLUMBIA BASIN
AND KITTITAS VALLEY WITH GUSTS OF UP TO 35 MPH. WINDS ARE EXPECTED
TO PEAK BEFORE 8 PM BEFORE SLOWLY SUBSIDING LATE TONIGHT.
ELEVATED WINDS WILL BE PRESENT SATURDAY, BUT CRITICAL HUMIDITIES
ARE NOT EXPECTED.
***THUNDERSTORMS IMPLY STRONG GUSTY WINDS***
***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.
WAZ695-191145-
EAST WASHINGTON SOUTH CENTRAL CASCADE MOUNTAINS-
259 PM PDT FRI JUL 18 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....47-54...EXCEPT 43-49 RIDGES.
* MAX HUMIDITY........63-78 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...POOR TO GOOD (192-534) DECREASING TO POOR
(25-121) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....68-77...EXCEPT 59-68 RIDGES.
* MIN HUMIDITY........31-46 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 10 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...POOR (59-161) INCREASING TO FAIR TO GOOD
(331-643) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....47-53...EXCEPT 43-48 RIDGES.
* MAX HUMIDITY........65-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...FAIR (219-489) DECREASING TO POOR (28-146)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....68-77...EXCEPT 59-68 RIDGES.
* MIN HUMIDITY........35-50 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (35-127) INCREASING TO POOR TO FAIR
(168-372) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 47 TO 54. HIGHS 63 TO 77. NORTHWEST
WINDS 3 TO 8 MPH.
TUESDAY
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. PARTLY
CLOUDY. LOWS 49 TO 55. HIGHS 67 TO 80. NORTHWEST WINDS 2 TO
7 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 51 TO 57. HIGHS 70 TO 84. WEST
WINDS 2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 50 TO 57. HIGHS 69 TO 83. WEST
WINDS 2 TO 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 54. HIGHS 67 TO 82. WEST WINDS
4 TO 10 MPH.
WAZ690-191145-
KITTITAS VALLEY-
259 PM PDT FRI JUL 18 2025
...RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR
WIND AND LOW RELATIVE HUMIDITY.....
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY CLEAR.
* MIN TEMPERATURE.....54-59.
* MAX HUMIDITY........52-67 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 11 TO 17 MPH WITH GUSTS UP
TO 30 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 11 TO 17 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 25 MPH DECREASING TO AROUND
15 MPH AFTER MIDNIGHT.
* VENTILATION INDEX...FAIR TO GOOD (362-588) DECREASING TO POOR
(33-107) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-88...EXCEPT 70-81 RIDGES.
* MIN HUMIDITY........22-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 7 TO 13 MPH WITH GUSTS UP TO
25 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 7 TO 13 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
* VENTILATION INDEX...POOR (97-193) INCREASING TO GOOD TO EXCELLENT
(651-945) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....53-59.
* MAX HUMIDITY........51-66 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 9 TO 15 MPH WITH GUSTS UP TO
30 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 9 TO 15 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 20 TO 25 MPH.
* VENTILATION INDEX...FAIR TO GOOD (401-617) DECREASING TO POOR
(41-135) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE.....78-85...EXCEPT 68-79 RIDGES.
* MIN HUMIDITY........26-35 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (53-143) INCREASING TO FAIR (268-496) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 56 TO 62. HIGHS 76 TO 84. NORTHWEST WINDS
5 TO 11 MPH.
TUESDAY
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. MOSTLY
CLEAR. LOWS 56 TO 62. HIGHS 80 TO 88. NORTHWEST WINDS 2 TO 7 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 58 TO 64. HIGHS 86 TO 94. WEST
WINDS 2 TO 7 MPH.
THURSDAY
CLEAR. LOWS 59 TO 64. HIGHS 86 TO 95. WEST WINDS 5 TO
11 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 84 TO 93. WEST WINDS
6 TO 12 MPH.
WAZ694-191145-
YAKAMA ALPINE DISTRICT-
259 PM PDT FRI JUL 18 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY CLEAR.
* MIN TEMPERATURE.....46-54.
* MAX HUMIDITY........57-72 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST AROUND 20 MPH DECREASING TO AROUND 10
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...FAIR (238-454) DECREASING TO POOR (25-71)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....73-83...EXCEPT 63-76 RIDGES.
* MIN HUMIDITY........22-37 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (52-128) INCREASING TO FAIR TO GOOD
(404-670) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....45-52.
* MAX HUMIDITY........56-71 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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.....WEST AROUND 20 MPH DECREASING TO AROUND 10
MPH AFTER MIDNIGHT.
* VENTILATION INDEX...FAIR (213-415) DECREASING TO POOR (25-73)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE.....71-81...EXCEPT 62-73 RIDGES.
* MIN HUMIDITY........27-42 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (30-82) INCREASING TO FAIR (223-379) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 48 TO 55. HIGHS 66 TO 80. WEST WINDS 2 TO
7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 49 TO 56. HIGHS 71 TO 85. WEST
WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 52 TO 59. HIGHS 76 TO 89. WEST
WINDS 1 TO 6 MPH.
THURSDAY
CLEAR. LOWS 51 TO 58. HIGHS 76 TO 89. WEST WINDS 2 TO
7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 56. HIGHS 74 TO 87. WEST WINDS
3 TO 8 MPH.
ORZ691-WAZ691-191145-
LOWER COLUMBIA BASIN OF OREGON-LOWER COLUMBIA BASIN OF WASHINGTON-
259 PM PDT FRI JUL 18 2025
...RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR
WIND AND LOW RELATIVE HUMIDITY.....
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....56-62.
* MAX HUMIDITY........50-64 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 11 TO 17 MPH. GUSTS TO 30 MPH IN
THE EVENING.
* RIDGES/UPR SLOPES....WEST WINDS 11 TO 17 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...FAIR TO GOOD (461-657) DECREASING TO POOR
(31-87) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....81-89.
* MIN HUMIDITY........19-26 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 8 TO 14 MPH WITH GUSTS UP TO 25
MPH.
* RIDGES/UPR SLOPES....WEST WINDS 8 TO 14 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (92-254) INCREASING TO GOOD TO
EXCELLENT (659-983) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....55-61...EXCEPT 50-58 RIDGES.
* MAX HUMIDITY........52-66 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 8 TO 14 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 8 TO 14 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...FAIR TO GOOD (415-587) DECREASING TO POOR
(27-99) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....78-85.
* MIN HUMIDITY........22-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 10 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...POOR (52-198) INCREASING TO FAIR TO EXCELLENT
(349-709) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
57 TO 63. HIGHS 79 TO 85. WEST WINDS 5 TO 11 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 84 TO 90. WEST
WINDS 2 TO 7 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 59 TO 65. HIGHS 89 TO 95. WEST
WINDS 2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 59 TO 66. HIGHS 88 TO 96. WEST
WINDS 5 TO 11 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 57 TO 64. HIGHS 86 TO 94. WEST WINDS
5 TO 11 MPH.
ORZ692-WAZ692-191145-
NORTHERN BLUE MOUNTAINS OF OREGON-BLUE MOUNTAINS OF WASHINGTON-
259 PM PDT FRI JUL 18 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....51-59.
* MAX HUMIDITY........55-70 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...FAIR TO GOOD (376-596) DECREASING TO POOR
(38-114) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....74-84...EXCEPT 66-73 RIDGES.
* MIN HUMIDITY........23-31 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...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.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...POOR TO FAIR (199-301) INCREASING TO
EXCELLENT (763-1027) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....49-57.
* MAX HUMIDITY........51-66 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...FAIR TO GOOD (354-506) DECREASING TO POOR
(38-104) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....72-81...EXCEPT 65-71 RIDGES.
* MIN HUMIDITY........24-32 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (117-237) INCREASING TO FAIR TO
GOOD (466-666) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 53 TO 60. HIGHS 68 TO 79. WEST WINDS 2 TO
7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 51 TO 59. HIGHS 72 TO 83. WEST
WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 52 TO 60. HIGHS 77 TO 89. WEST
WINDS 1 TO 6 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 54 TO 63. HIGHS 79 TO 90. WEST
WINDS 2 TO 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 54 TO 61. HIGHS 77 TO 88. WEST WINDS
2 TO 7 MPH.
ORZ693-WAZ693-191145-
CANYON GRASSLANDS OF WALLOWA COUNTY-
SOUTHEAST WASHINGTON GRANDE RONDE VALLEY-
259 PM PDT FRI JUL 18 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....52-62.
* MAX HUMIDITY........46-61 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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.....WEST AROUND 15 MPH.
* VENTILATION INDEX...FAIR TO GOOD (376-594) DECREASING TO POOR
(36-114) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....76-86...EXCEPT 72-78 RIDGES.
* MIN HUMIDITY........21-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......11500 FT AGL.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...POOR TO FAIR (141-321) INCREASING TO
EXCELLENT (866-1050) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....49-58.
* MAX HUMIDITY........48-63 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR (311-471) DECREASING TO POOR (26-78)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....75-84...EXCEPT 70-77 RIDGES.
* MIN HUMIDITY........19-26 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 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (56-168) INCREASING TO FAIR TO EXCELLENT
(445-743) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 51 TO 61. HIGHS 71 TO 81. WEST WINDS 1 TO
6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 49 TO 59. HIGHS 75 TO 84. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 51 TO 60. HIGHS 81 TO 90. WEST
WINDS 1 TO 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 52 TO 63. HIGHS 83 TO 93. WEST
WINDS 1 TO 6 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 52 TO 62. HIGHS 82 TO 92. WEST WINDS
2 TO 7 MPH.
ORZ701-191145-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
259 PM PDT FRI JUL 18 2025
...RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR
WIND AND LOW RELATIVE HUMIDITY.....
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE.....52-58.
* MAX HUMIDITY........57-69 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...GUSTS TO 30 MPH IN THE EVENING. WEST WINDS 8
TO 14 MPH. IN THE EASTERN COLUMBIA RIVER GORGE, GUSTS TO 30
MPH.
* RIDGES/UPR SLOPES....WEST WINDS 8 TO 14 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...FAIR TO GOOD (359-613) DECREASING TO POOR
(38-118) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....79-84...EXCEPT 73-82 RIDGES.
* MIN HUMIDITY........25-36 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 7 TO 13 MPH WITH GUSTS UP TO 25
MPH...EXCEPT WEST 8 TO 14 MPH WITH GUSTS UP TO 30 MPH IN THE
EASTERN COLUMBIA RIVER GORGE.
* RIDGES/UPR SLOPES....WEST WINDS 7 TO 13 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...POOR TO FAIR (97-225) INCREASING TO GOOD TO
EXCELLENT (621-829) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....52-57.
* MAX HUMIDITY........59-72 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 8 TO 14 MPH...EXCEPT WEST 8 TO 14
MPH WITH GUSTS UP TO 30 MPH IN THE EASTERN COLUMBIA RIVER
GORGE.
* RIDGES/UPR SLOPES....WEST WINDS 7 TO 13 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...FAIR TO GOOD (337-587) DECREASING TO POOR
(40-118) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE.....77-82...EXCEPT 72-79 RIDGES.
* MIN HUMIDITY........28-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH...EXCEPT WEST 4 TO 10
MPH IN THE EASTERN COLUMBIA RIVER GORGE.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...POOR (55-157) INCREASING TO FAIR TO GOOD
(453-675) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
A SLIGHT CHANCE OF SHOWERS. MOSTLY CLOUDY. LOWS 53 TO
59. HIGHS 77 TO 82. WEST WINDS 5 TO 11 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 53 TO 58. HIGHS 82 TO 87. WEST
WINDS 3 TO 8 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 87 TO 92. WEST
WINDS 2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 84 TO 90. WEST
WINDS 4 TO 9 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 82 TO 88. WEST WINDS
5 TO 11 MPH.
ORZ702-191145-
EAST SLOPES OF THE MT. HOOD NATIONAL FOREST-
259 PM PDT FRI JUL 18 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....47-55.
* MAX HUMIDITY........57-72 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT GOOD RIDGES.
* 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.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...POOR TO FAIR (190-476) DECREASING TO POOR
(25-93) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....74-84...EXCEPT 68-77 RIDGES.
* MIN HUMIDITY........25-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...POOR (66-152) INCREASING TO FAIR TO GOOD
(330-622) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....47-55.
* MAX HUMIDITY........59-74 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...POOR TO FAIR (161-379) DECREASING TO POOR
(25-90) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....73-81...EXCEPT 66-75 RIDGES.
* MIN HUMIDITY........29-42 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 5
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 1 TO 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...POOR (33-107) INCREASING TO FAIR (263-497) IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. MOSTLY
CLOUDY. LOWS 48 TO 56. HIGHS 66 TO 80. WEST WINDS 2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 48 TO 55. HIGHS 72 TO 85. WEST
WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 50 TO 58. HIGHS 75 TO 90. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 51 TO 59. HIGHS 73 TO 88. WEST
WINDS 2 TO 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 56. HIGHS 72 TO 86. WEST WINDS
2 TO 7 MPH.
ORZ695-191145-
EAGLE CAP WILDERNESS-
259 PM PDT FRI JUL 18 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
HAZY AFTER MIDNIGHT.
* MIN TEMPERATURE.....52-59...EXCEPT 46-53 RIDGES.
* MAX HUMIDITY........51-63 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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...FAIR (257-447) DECREASING TO POOR (25-66)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....73-85...EXCEPT 63-74 RIDGES.
* MIN HUMIDITY........26-40 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......10500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (78-202) INCREASING TO GOOD TO
EXCELLENT (678-980) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....50-57...EXCEPT 44-51 RIDGES.
* MAX HUMIDITY........49-62 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
* VENTILATION INDEX...FAIR (215-353) DECREASING TO POOR (25-54)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....71-83...EXCEPT 61-72 RIDGES.
* MIN HUMIDITY........22-33 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 3 TO 6
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (26-96) INCREASING TO FAIR TO GOOD
(296-510) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 47 TO 58. HIGHS 61 TO 76. NORTHWEST WINDS
1 TO 6 MPH.
TUESDAY
A SLIGHT CHANCE OF SHOWERS. PARTLY CLOUDY. LOWS 46 TO
55. HIGHS 65 TO 80. NORTHWEST WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 47 TO 57. HIGHS 71 TO 86.
NORTHWEST WINDS 1 TO 6 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 50 TO 59. HIGHS 73 TO 88. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 58. HIGHS 72 TO 87. WEST
WINDS 2 TO 7 MPH.
ORZ694-191145-
GRANDE RONDE VALLEY OF OREGON-
259 PM PDT FRI JUL 18 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....55-60.
* MAX HUMIDITY........59-67 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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...FAIR TO GOOD (438-540) DECREASING TO POOR
(32-64) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.....83-88.
* MIN HUMIDITY........23-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR TO FAIR (114-202) INCREASING TO
EXCELLENT (904-1050) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....52-57.
* MAX HUMIDITY........53-64 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST 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...FAIR (330-422) DECREASING TO POOR (30-60)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....80-85.
* MIN HUMIDITY........22-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 2
TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....LIGHT LESS THAN 5 MPH BECOMING NORTHWEST 3
TO 6 MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (39-93) INCREASING TO FAIR TO GOOD
(366-586) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 55 TO 60. HIGHS 76 TO 81. NORTHWEST
WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 80 TO 85.
NORTHWEST WINDS 1 TO 6 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 53 TO 58. HIGHS 87 TO 92.
NORTHWEST WINDS 1 TO 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 89 TO 94.
NORTHWEST WINDS 2 TO 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 87 TO 92. NORTHWEST
WINDS 2 TO 7 MPH.
ORZ699-191145-
WESTERN FORESTED BLUE MOUNTAINS-
259 PM PDT FRI JUL 18 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY IN THE EVENING.
* MIN TEMPERATURE.....52-57...EXCEPT 47-53 RIDGES.
* MAX HUMIDITY........61-71 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR TO GOOD (347-513) DECREASING TO POOR
(25-59) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....76-82...EXCEPT 70-77 RIDGES.
* MIN HUMIDITY........25-33 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...POOR TO FAIR (126-210) INCREASING TO
EXCELLENT (775-997) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MIN TEMPERATURE.....47-52.
* MAX HUMIDITY........55-63 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 2 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 3 TO 7 MPH IN THE EVENING
BECOMING LIGHT WINDS LESS THAN 5 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR (319-453) DECREASING TO POOR (25-58)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....74-80...EXCEPT 67-75 RIDGES.
* MIN HUMIDITY........24-31 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.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (53-111) INCREASING TO FAIR TO GOOD
(407-581) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 50 TO 55. HIGHS 67 TO 76. NORTHWEST WINDS
1 TO 5 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 48 TO 54. HIGHS 71 TO 80. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 49 TO 55. HIGHS 77 TO 85. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 51 TO 57. HIGHS 79 TO 88. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 51 TO 56. HIGHS 77 TO 86. WEST WINDS
1 TO 5 MPH.
ORZ696-191145-
JOHN DAY VALLEY-
259 PM PDT FRI JUL 18 2025
...RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR
WIND AND LOW RELATIVE HUMIDITY.....
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MIN TEMPERATURE.....52-58.
* MAX HUMIDITY........55-66 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 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.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR TO GOOD (469-673) DECREASING TO POOR
(25-49) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
HAZY IN THE MORNING.
* MAX TEMPERATURE.....78-86...EXCEPT 73-78 RIDGES.
* MIN HUMIDITY........21-27 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (101-161) INCREASING TO EXCELLENT
(822-1048) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MIN TEMPERATURE.....49-55.
* MAX HUMIDITY........56-68 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR TO GOOD (404-566) DECREASING TO POOR
(25-58) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE.....77-85...EXCEPT 72-77 RIDGES.
* MIN HUMIDITY........21-27 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 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH.
* VENTILATION INDEX...POOR (44-92) INCREASING TO FAIR TO GOOD
(461-609) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 53 TO 58. HIGHS 73 TO 81. NORTHWEST WINDS
2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS 77 TO 85.
NORTHWEST WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 52 TO 58. HIGHS 82 TO 91. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 53 TO 59. HIGHS 83 TO 92. WEST
WINDS 1 TO 6 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 52 TO 58. HIGHS 82 TO 90. WEST WINDS
2 TO 7 MPH.
ORZ700-191145-
CENTRAL MOUNTAINS OF OREGON-
259 PM PDT FRI JUL 18 2025
...RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR
WIND AND LOW RELATIVE HUMIDITY.....
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....47-56.
* MAX HUMIDITY........59-69 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 7 TO 13 MPH WITH GUSTS UP TO
25 MPH BECOMING WEST 1 TO 6 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR TO GOOD (431-657) DECREASING TO POOR
(25-45) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* MAX TEMPERATURE.....80-85...EXCEPT 73-79 RIDGES.
* MIN HUMIDITY........22-29 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (71-141) INCREASING TO EXCELLENT
(775-1031) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY AND AREAS OF SMOKE.
* MIN TEMPERATURE.....44-52.
* MAX HUMIDITY........66-79 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 6 TO 12 MPH BECOMING WEST 1
TO 5 MPH AFTER MIDNIGHT.
* 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...FAIR TO GOOD (438-658) DECREASING TO POOR
(25-51) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE.....78-83...EXCEPT 71-78 RIDGES.
* MIN HUMIDITY........21-28 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 2 TO 6
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.......9000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 10 MPH.
* VENTILATION INDEX...POOR (31-67) INCREASING TO FAIR TO EXCELLENT
(484-716) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 48 TO 55. HIGHS 74 TO 80. NORTHWEST WINDS
3 TO 8 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 44 TO 52. HIGHS 77 TO 85.
NORTHWEST WINDS 1 TO 6 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 47 TO 55. HIGHS 83 TO 90. WEST
WINDS 1 TO 6 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 48 TO 56. HIGHS 84 TO 90. WEST
WINDS 2 TO 7 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 47 TO 54. HIGHS 82 TO 89. WEST
WINDS 2 TO 7 MPH.
ORZ703-191145-
WARM SPRINGS RESERVATION-
259 PM PDT FRI JUL 18 2025
...RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR
WIND AND LOW RELATIVE HUMIDITY.....
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....55-60...EXCEPT 49-55 RIDGES.
* MAX HUMIDITY........55-68 PERCENT.
* HUMIDITY RECOVERY...MODERATE...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 9 TO 15 MPH DECREASING TO 3 TO 8
MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS 8 TO 14 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...FAIR TO GOOD (337-551) DECREASING TO POOR
(25-92) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....77-87...EXCEPT 65-74 RIDGES.
* MIN HUMIDITY........24-32 PERCENT...EXCEPT 35-50 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...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.......8000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...POOR (83-165) INCREASING TO GOOD TO EXCELLENT
(538-838) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....49-55.
* MAX HUMIDITY........62-71 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 11 MPH. GUSTS TO 25 MPH IN
THE EVENING.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 11 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...FAIR TO GOOD (333-515) DECREASING TO POOR
(25-84) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE.....76-85...EXCEPT 64-73 RIDGES.
* MIN HUMIDITY........25-33 PERCENT...EXCEPT 35-50 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (41-107) INCREASING TO FAIR TO GOOD
(421-641) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY. LOWS 50 TO 57. HIGHS 71 TO 83. WEST
WINDS 4 TO 9 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 77 TO 88. NORTHWEST
WINDS 2 TO 7 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 52 TO 57. HIGHS 81 TO 93. WEST
WINDS 2 TO 7 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 53 TO 58. HIGHS 80 TO 93. WEST
WINDS 3 TO 8 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 51 TO 56. HIGHS 78 TO 91. WEST WINDS
4 TO 9 MPH.
ORZ704-191145-
NORTHERN DESCHUTES NATIONAL FOREST-
259 PM PDT FRI JUL 18 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....47-55.
* MAX HUMIDITY........57-72 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...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 15 TO 20 MPH.
* VENTILATION INDEX...FAIR TO GOOD (260-504) DECREASING TO POOR
(27-97) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE.....78-83...EXCEPT 65-75 RIDGES.
* MIN HUMIDITY........28-35 PERCENT...EXCEPT 38-53 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 15 MPH.
* VENTILATION INDEX...POOR (85-179) INCREASING TO GOOD TO EXCELLENT
(501-801) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....44-51.
* MAX HUMIDITY........66-81 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 3 TO 8 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 15 TO 20 MPH.
* VENTILATION INDEX...FAIR TO GOOD (284-524) DECREASING TO POOR
(25-82) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE.....76-82...EXCEPT 63-73 RIDGES.
* MIN HUMIDITY........28-34 PERCENT...EXCEPT 36-51 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 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.......8000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (41-111) INCREASING TO FAIR TO GOOD
(397-645) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
A SLIGHT CHANCE OF SHOWERS. MOSTLY CLOUDY. LOWS 45 TO
52. HIGHS 66 TO 79. WEST WINDS 2 TO 7 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 70 TO 84. WEST
WINDS 1 TO 6 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 47 TO 52. HIGHS 75 TO 89. WEST
WINDS 1 TO 6 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 75 TO 88. WEST
WINDS 2 TO 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 74 TO 87. WEST WINDS
3 TO 8 MPH.
ORZ705-191145-
SOUTHERN DESCHUTES NATIONAL FOREST-
259 PM PDT FRI JUL 18 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....44-50.
* MAX HUMIDITY........67-82 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 2 TO 7 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR (255-445) DECREASING TO POOR (25-49)
AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING SUNNY.
* MAX TEMPERATURE.....77-82...EXCEPT 66-76 RIDGES.
* MIN HUMIDITY........27-35 PERCENT...EXCEPT 32-47 PERCENT RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 3 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.......8000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (76-132) INCREASING TO GOOD TO EXCELLENT
(597-949) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR.
* MIN TEMPERATURE.....42-47.
* MAX HUMIDITY........78-93 PERCENT...EXCEPT 66-81 PERCENT RIDGES.
* HUMIDITY RECOVERY...EXCELLENT...EXCEPT GOOD RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 3 TO 7 MPH IN THE EVENING
BECOMING DRAINAGE WINDS LESS THAN 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...FAIR TO GOOD (281-509) DECREASING TO POOR
(25-50) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....75-80...EXCEPT 65-74 RIDGES.
* MIN HUMIDITY........25-33 PERCENT...EXCEPT 29-44 PERCENT RIDGES.
* 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 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (33-63) INCREASING TO GOOD TO EXCELLENT
(535-825) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. LOWS
45 TO 50. HIGHS 67 TO 77. WEST WINDS 2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 71 TO 80. WEST
WINDS UP TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 76 TO 85. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 76 TO 86. WEST
WINDS 1 TO 6 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 43 TO 49. HIGHS 75 TO 85. WEST
WINDS 1 TO 6 MPH.
ORZ697-191145-
CENTRAL BLUE MOUNTAINS-
259 PM PDT FRI JUL 18 2025
...RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR
WIND AND LOW RELATIVE HUMIDITY.....
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MIN TEMPERATURE.....47-52.
* MAX HUMIDITY........57-71 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 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...FAIR TO GOOD (423-597) DECREASING TO POOR
(25-50) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....78-83...EXCEPT 72-78 RIDGES.
* MIN HUMIDITY........25-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 3 TO 8
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 3 TO 8 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO AROUND 20
MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (99-161) INCREASING TO EXCELLENT
(864-1050) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. HAZY.
* MIN TEMPERATURE.....44-50.
* MAX HUMIDITY........59-73 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 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 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...FAIR (357-475) DECREASING TO POOR (25-52)
AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY.
* MAX TEMPERATURE.....76-81...EXCEPT 70-76 RIDGES.
* MIN HUMIDITY........23-28 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 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (45-95) INCREASING TO FAIR TO EXCELLENT
(494-706) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 49 TO 54. HIGHS 67 TO 74. NORTHWEST WINDS
1 TO 6 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 71 TO 78.
NORTHWEST WINDS 1 TO 5 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 47 TO 53. HIGHS 77 TO 84. TERRAIN
DRIVEN WINDS LESS THAN 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 48 TO 54. HIGHS 79 TO 86.
NORTHWEST WINDS 1 TO 5 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 54. HIGHS 77 TO 84. NORTHWEST
WINDS 1 TO 6 MPH.
ORZ698-191145-
SOUTHERN BLUE MOUNTAINS-
259 PM PDT FRI JUL 18 2025
...RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR
WIND AND LOW RELATIVE HUMIDITY.....
TONIGHT
* SKY/WEATHER.........MOSTLY CLEAR. HAZY.
* MIN TEMPERATURE.....48-53.
* MAX HUMIDITY........53-66 PERCENT.
* HUMIDITY RECOVERY...GOOD...EXCEPT MODERATE RIDGES.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST 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...GOOD TO EXCELLENT (562-732) DECREASING TO
POOR (25-48) AFTER MIDNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....79-87.
* MIN HUMIDITY........20-25 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPSLOPE LESS THAN 5 MPH BECOMING WEST 5 TO 8
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 2 TO 7 MPH.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......9500 FT AGL.
* TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO AROUND 20
MPH IN THE AFTERNOON.
* VENTILATION INDEX...POOR (111-149) INCREASING TO EXCELLENT
(1020-1050) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLEAR. HAZY.
* MIN TEMPERATURE.....46-52.
* MAX HUMIDITY........56-71 PERCENT.
* HUMIDITY RECOVERY...MODERATE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST 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...FAIR TO GOOD (463-645) DECREASING TO POOR
(27-57) AFTER MIDNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* MAX TEMPERATURE.....78-85.
* MIN HUMIDITY........18-23 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 5
MPH IN THE AFTERNOON.
* CWR.................0 PERCENT.
* CHC OF LIGHTNING....0 PERCENT.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* VENTILATION INDEX...POOR (55-95) INCREASING TO GOOD TO EXCELLENT
(652-818) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
MONDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 50 TO 57. HIGHS 72 TO 78. NORTHWEST WINDS
2 TO 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 47 TO 53. HIGHS 75 TO 81.
NORTHWEST WINDS 2 TO 7 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 48 TO 54. HIGHS 81 TO 87.
NORTHWEST WINDS 1 TO 5 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 83 TO 89. WEST
WINDS 1 TO 6 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 82 TO 88. WEST WINDS
2 TO 7 MPH.
8-14 DAY OUTLOOK FOR SATURDAY JULY 26 THROUGH FRIDAY AUGUST 1
A GREATER CHANCE OF NEAR TO ABOVE NORMAL TEMPERATURES AND NEAR
NORMAL PRECIPITATION.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page