Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
835
FNUS56 KEKA 031936
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE Eureka CA
1236 PM PDT Wed Sep 3 2025
.DISCUSSION...Today through the end of the week gradual cooling
is expected with highs mainly in the 80s by Saturday with diurnal
winds and afternoon gusts. There is a slight chance of
thunderstorms in far northern Trinity county Thursday afternoon.
Friday, an approaching upper level low/trough will bring a slight
chance (10-20%) of showers for the northern portion of the area,
especially for Del Norte County. High temperatures are expected to
remain cool through the weekend. Monday there is a chance of
showers mainly in the north with highs in to 70s.
CAZ201-041400-
North Coast-
1236 PM PDT Wed Sep 3 2025
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly
cloudy. Patchy dense fog overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...54-60
Ridges/upr slopes....56-64
* Max Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....63-78 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Northwest winds 5 to 7 mph...shifting to
the southeast 5 to 6 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog early in the morning.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...71-79
Ridges/upr slopes....71-79
* Min Humidity.......
Valleys/lwr slopes...76-86 percent
Ridges/upr slopes....63-73 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 8 mph.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 6
mph in the afternoon.
* Mixing Height..........2000 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy drizzle in the late evening and
overnight. Patchy fog after midnight.
* Min Temperature.......
Valleys/lwr slopes...52-57
Ridges/upr slopes....52-59
* Max Humidity.......
Valleys/lwr slopes...82-97 percent
Ridges/upr slopes....72-87 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Mostly cloudy. Patchy fog in the morning.
Patchy drizzle in the morning.
* Max Temperature.......
Valleys/lwr slopes...69-77
Ridges/upr slopes....65-73
* Min Humidity.......
Valleys/lwr slopes...75-90 percent
Ridges/upr slopes....69-84 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming west 5
to 7 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 6
mph in the afternoon.
* Mixing Height..........2800 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ202-041400-
Coastal Mendocino-
1236 PM PDT Wed Sep 3 2025
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy dense fog.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-56
Ridges/upr slopes....50-56
* Max Humidity.......
Valleys/lwr slopes...88-100 percent
Ridges/upr slopes....79-94 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 mph in the
evening...becoming light winds 1 to 3 mph.
Ridges/upr slopes....Northwest winds 5 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........100 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...66-74
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...76-91 percent
Ridges/upr slopes....65-75 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 7 mph.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 6
mph in the afternoon.
* Mixing Height..........1700 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy drizzle in the late evening and
overnight. Patchy fog after midnight.
* Min Temperature.......
Valleys/lwr slopes...54-57
Ridges/upr slopes....49-57
* Max Humidity.......
Valleys/lwr slopes...86-100 percent
Ridges/upr slopes....80-95 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming light winds 2 to 4 mph.
Ridges/upr slopes....Northwest winds 5 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....10 percent.
.FRIDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog in the morning. Patchy drizzle
in the morning.
* Max Temperature.......
Valleys/lwr slopes...64-72
Ridges/upr slopes....67-75
* Min Humidity.......
Valleys/lwr slopes...78-93 percent
Ridges/upr slopes....63-78 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 5 mph...becoming
northwest 5 to 8 mph in the afternoon.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........1900 ft AGL.
* Chc of Wetting Rain....10 percent.
$$
CAZ203-204-041400-
Upper Smith-Lower Middle Klamath-
1236 PM PDT Wed Sep 3 2025
.TONIGHT...
* Sky/Weather............Mostly clear. Patchy smoke.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...63-66
Ridges/upr slopes....65-69
* Max Humidity.......
Valleys/lwr slopes...54-69 percent
Ridges/upr slopes....39-48 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 6 mph...shifting to the
east 5 mph after midnight.
Ridges/upr slopes....Northeast winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Sunny then becoming partly cloudy. Patchy
smoke until late afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...87-95
Ridges/upr slopes....77-85
* Min Humidity.......
Valleys/lwr slopes...36-44 percent
Ridges/upr slopes....29-37 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
southwest 5 to 8 mph in the afternoon.
Ridges/upr slopes....East winds 5 to 6 mph...shifting to the
west 5 to 7 mph in the afternoon.
* Mixing Height..........6500 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Partly cloudy. Patchy smoke after
midnight.
* Min Temperature.......
Valleys/lwr slopes...56-61
Ridges/upr slopes....59-63
* Max Humidity.......
Valleys/lwr slopes...65-80 percent
Ridges/upr slopes....48-58 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 6 mph...shifting to the
north 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny. Patchy smoke early in the morning.
* Max Temperature.......
Valleys/lwr slopes...81-89
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...51-61 percent
Ridges/upr slopes....43-53 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
southwest 5 to 10 mph in the afternoon.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........5500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ211-212-041400-
Hoopa-Van Duzen/Mad River-
1236 PM PDT Wed Sep 3 2025
.TONIGHT...
* Sky/Weather............Mostly clear. Patchy smoke after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...58-65
Ridges/upr slopes....58-66
* Max Humidity.......
Valleys/lwr slopes...61-76 percent
Ridges/upr slopes....46-56 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....North winds 5 to 6 mph...shifting to the
east after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Sunny. Patchy smoke in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...87-95
Ridges/upr slopes....81-89
* Min Humidity.......
Valleys/lwr slopes...28-36 percent
Ridges/upr slopes....26-34 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 mph...shifting to the west 5
to 7 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 to 6 mph...shifting to
the southwest in the afternoon.
* Mixing Height..........6600 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature.......
Valleys/lwr slopes...52-59
Ridges/upr slopes....52-60
* Max Humidity.......
Valleys/lwr slopes...73-88 percent
Ridges/upr slopes....54-64 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 6 mph...shifting to the
north 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny then becoming partly cloudy then
becoming sunny.
* Max Temperature.......
Valleys/lwr slopes...82-90
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...39-49 percent
Ridges/upr slopes....39-49 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 9 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming southwest 5
to 7 mph in the afternoon.
* Mixing Height..........5000 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ283-041400-
Trinity-
1236 PM PDT Wed Sep 3 2025
.TONIGHT...
* Sky/Weather............Mostly clear. Patchy smoke until early
morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...61-66
Ridges/upr slopes....58-66
* Max Humidity.......
Valleys/lwr slopes...53-63 percent
Ridges/upr slopes....40-50 percent
* 20-Foot Winds...
Valleys/lwr slopes...East winds 5 mph in the evening...becoming
downslope/downvalley 1 to 3 mph.
Ridges/upr slopes....East winds 5 to 7 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Sunny then becoming partly cloudy. Patchy
smoke in the afternoon. Slight chance of
showers in the afternoon. Slight chance of
thunderstorms late in the afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...91-97
Ridges/upr slopes....78-86
* Min Humidity.......
Valleys/lwr slopes...16-21 percent
Ridges/upr slopes....22-30 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southeast 5 to 7 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 to 8 mph.
* Mixing Height..........9300 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy smoke until early
morning. Slight chance of showers and
thunderstorms through the night.
* Min Temperature.......
Valleys/lwr slopes...57-62
Ridges/upr slopes....54-62
* Max Humidity.......
Valleys/lwr slopes...53-67 percent
Ridges/upr slopes....41-51 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Southwest winds 5 to 6 mph...shifting to
the northeast 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...85-92
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...20-27 percent
Ridges/upr slopes....25-33 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southeast 5 to 7 mph in the afternoon.
Ridges/upr slopes....East winds 5 to 6 mph...shifting to the
south 5 to 8 mph in the afternoon.
* Mixing Height..........8000 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ276-041400-
Interior Mendocino-
1236 PM PDT Wed Sep 3 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...55-63
Ridges/upr slopes....56-64
* Max Humidity.......
Valleys/lwr slopes...65-80 percent
Ridges/upr slopes....61-76 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....78-86
* Min Humidity.......
Valleys/lwr slopes...40-50 percent
Ridges/upr slopes....47-57 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 mph...shifting to the
southwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....South winds 5 mph...shifting to the
southwest 5 to 7 mph in the afternoon.
* Mixing Height..........3700 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Partly cloudy. Patchy drizzle after
midnight.
* Min Temperature.......
Valleys/lwr slopes...50-58
Ridges/upr slopes....51-59
* Max Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....70-85 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph.
Ridges/upr slopes....Northwest winds 5 to 7 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog early in the morning.
* Max Temperature.......
Valleys/lwr slopes...76-84
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...51-61 percent
Ridges/upr slopes....55-65 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 10 mph.
Ridges/upr slopes....West winds 5 to 10 mph.
* Mixing Height..........3500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ277-041400-
W Mendocino NF/E Mendocino Unit-
1236 PM PDT Wed Sep 3 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...56-64
Ridges/upr slopes....60-68
* Max Humidity.......
Valleys/lwr slopes...52-62 percent
Ridges/upr slopes....34-44 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Southeast winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...90-98
Ridges/upr slopes....79-87
* Min Humidity.......
Valleys/lwr slopes...19-27 percent
Ridges/upr slopes....18-26 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 8 mph.
Ridges/upr slopes....South winds 5 to 9 mph.
* Mixing Height..........7500 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...50-58
Ridges/upr slopes....56-63
* Max Humidity.......
Valleys/lwr slopes...64-79 percent
Ridges/upr slopes....42-52 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 7 mph...shifting to the
north 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...30-38 percent
Ridges/upr slopes....28-36 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southwest 5 to 8 mph in the afternoon.
Ridges/upr slopes....North winds 5 to 6 mph...shifting to the
southwest 5 to 8 mph in the afternoon.
* Mixing Height..........6200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ264-041400-
Lake County Portion of Lake/Napa/Sonoma RU-
1236 PM PDT Wed Sep 3 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 59
Ridges/upr slopes....66-70
* Max Humidity.......
Valleys/lwr slopes...47 percent
Ridges/upr slopes....33-43 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
Ridges/upr slopes....Southwest winds 5 to 7 mph...shifting to
the southeast 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...around 90
Ridges/upr slopes....81-87
* Min Humidity.......
Valleys/lwr slopes...18 percent
Ridges/upr slopes....23-31 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southeast winds 5 to 6 mph...shifting to
the south 5 to 7 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 to 6 mph...shifting to
the south 5 to 11 mph in the afternoon.
* Mixing Height..........6100 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...around 54
Ridges/upr slopes....61-64
* Max Humidity.......
Valleys/lwr slopes...70 percent
Ridges/upr slopes....46-56 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 6 mph...shifting to the
northwest after midnight.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...around 82
Ridges/upr slopes....75-80
* Min Humidity.......
Valleys/lwr slopes...33 percent
Ridges/upr slopes....33-43 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 6 to 9 mph.
Ridges/upr slopes....Northwest winds 5 to 7 mph...shifting to
the west 5 to 8 mph in the afternoon.
* Mixing Height..........5400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
.EXTENDED FORECAST FOR DAYS 3 THROUGH 5...
...Northwest California Coast...
.SATURDAY...Mostly cloudy. Patchy drizzle. Patchy fog. Lows in
the lower to mid 50s. Highs 64 to 70. Winds generally less than
5 mph.
.SUNDAY...Mostly cloudy. Slight chance of showers. Patchy fog.
Lows in the lower to mid 50s. Highs 64 to 71. Winds generally
less than 5 mph.
.MONDAY...Mostly cloudy with chance of showers. Patchy fog after
midnight. Lows in the lower to mid 50s. Highs 63 to 68. West
winds 5 mph.
...Northwest California Interior...
.SATURDAY...Mostly clear. Lows 51 to 59. Highs 77 to 87. West
winds 5 mph.
.SUNDAY...Mostly clear. Lows 50 to 58. Highs 76 to 85. West winds
5 mph.
.MONDAY...Partly cloudy with chance of showers. Lows 50 to 58.
Highs 70 to 79. West winds 5 mph.
.6 to 10 DAY OUTLOOK...Tuesday September 9 THROUGH Saturday September 13, 2025...
FOR NW CALIF...BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
$$
visit us at www.weather.gov/eureka