Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
583
FNUS56 KEKA 311926
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE Eureka CA
1226 PM PDT Thu Jul 31 2025
...ISOLATED TO SCATTERED THUNDERSTORMS THROUGH EARLY THIS EVENING FOR
MOSTLY ZONE 283...
...CHANCE OF THUNDERSTORMS AGAIN FRIDAY AFTERNOON FOR MOSTLY ZONE 283...
.DISCUSSION...Chance for afternoon thunderstorms will continue today
through Friday. Storms will likely be wet, though isolated fire
starts will still be possible with dry strikes on the periphery of
rain cores. Frequency and coverage of lightning strikes today
will generally be less than on Wednesday. Storms will most likely
produce locally heavy rain and hail today and Friday. Outflow wind
gusts from 30 to 50 mph will also be possible. Winds will mostly
remain terrain driven with modest onshore westerly pushes each
afternoon in exposed areas through Saturday. Stronger onshore wind
is expected with a colder trough on Sunday. This trough will also
bring another chance of showers and thunderstorms to mainly the
Klamath Mountains on Sunday.
CAZ201-011430-
North Coast-
1226 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/Weather............Mostly cloudy. Isolated showers late in
the evening. Patchy fog late in the night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-56
Ridges/upr slopes....53-58
* Max Humidity.......
Valleys/lwr slopes...87-100 percent
Ridges/upr slopes....77-92 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog early in the morning.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...70-78
Ridges/upr slopes....65-73
* Min Humidity.......
Valleys/lwr slopes...75-90 percent
Ridges/upr slopes....72-87 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 12 mph.
* Mixing Height..........2200 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
* Min Temperature.......
Valleys/lwr slopes...52-56
Ridges/upr slopes....52-58
* Max Humidity.......
Valleys/lwr slopes...86-100 percent
Ridges/upr slopes....77-92 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
then becoming sunny.
* Max Temperature.......
Valleys/lwr slopes...69-77
Ridges/upr slopes....64-72
* Min Humidity.......
Valleys/lwr slopes...74-89 percent
Ridges/upr slopes....71-86 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........2500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ202-011430-
Coastal Mendocino-
1226 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-56
Ridges/upr slopes....50-56
* Max Humidity.......
Valleys/lwr slopes...86-100 percent
Ridges/upr slopes....82-97 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........100 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Partly cloudy then becoming sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...64-72
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...76-91 percent
Ridges/upr slopes....65-75 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........1600 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...53-56
Ridges/upr slopes....49-56
* Max Humidity.......
Valleys/lwr slopes...85-100 percent
Ridges/upr slopes....80-95 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Partly cloudy then becoming sunny.
* Max Temperature.......
Valleys/lwr slopes...64-72
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...75-90 percent
Ridges/upr slopes....64-74 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........1700 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ203-204-011430-
Upper Smith-Lower Middle Klamath-
1226 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......20% decreasing to 0% after midnight.
* Min Temperature.......
Valleys/lwr slopes...56-59
Ridges/upr slopes....around 60
* Max Humidity.......
Valleys/lwr slopes...76-91 percent
Ridges/upr slopes....59-73 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Northwest winds 5 to 6 mph...shifting to
the northeast after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny. Slight chance of showers and
thunderstorms in the afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...84-92
Ridges/upr slopes....70-78
* Min Humidity.......
Valleys/lwr slopes...45-55 percent
Ridges/upr slopes....46-56 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 8 mph.
Ridges/upr slopes....North winds 5 to 6 mph...shifting to the
west 5 to 7 mph in the afternoon.
* Mixing Height..........6800 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...55-58
Ridges/upr slopes....around 60
* Max Humidity.......
Valleys/lwr slopes...76-91 percent
Ridges/upr slopes....59-74 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...shifting to
the northeast 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...81-89
Ridges/upr slopes....68-76
* Min Humidity.......
Valleys/lwr slopes...47-57 percent
Ridges/upr slopes....47-57 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 6 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 mph...shifting to the
west 5 to 7 mph in the afternoon.
* Mixing Height..........6200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ211-212-011430-
Hoopa-Van Duzen/Mad River-
1226 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-57
Ridges/upr slopes....52-59
* Max Humidity.......
Valleys/lwr slopes...81-96 percent
Ridges/upr slopes....65-80 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Partly cloudy then becoming sunny.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...82-90
Ridges/upr slopes....74-82
* Min Humidity.......
Valleys/lwr slopes...37-47 percent
Ridges/upr slopes....49-59 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........4300 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...53-57
Ridges/upr slopes....50-58
* Max Humidity.......
Valleys/lwr slopes...82-97 percent
Ridges/upr slopes....68-83 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...81-89
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...37-47 percent
Ridges/upr slopes....51-61 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....North winds 5 mph...shifting to the west 5
to 7 mph in the afternoon.
* Mixing Height..........4800 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ283-011430-
Trinity-
1226 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/Weather............Mostly clear. Isolated showers and
thunderstorms early in the evening.
* Chance Lightning.......20% decreasing to 0% after midnight.
* Min Temperature.......
Valleys/lwr slopes...58-62
Ridges/upr slopes....53-60
* Max Humidity.......
Valleys/lwr slopes...62-75 percent
Ridges/upr slopes....53-68 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 7 mph...shifting to
the north 5 to 6 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny then becoming partly cloudy.
Isolated showers and thunderstorms in the
late morning and afternoon.
* Chance Lightning.......10% increasing to 30% in the afternoon.
* Max Temperature.......
Valleys/lwr slopes...90-96
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...18-23 percent
Ridges/upr slopes....30-38 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph.
Ridges/upr slopes....Southwest winds 5 to 6 mph.
* Mixing Height..........10100 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Mostly clear. Isolated showers and
thunderstorms.
* Min Temperature.......
Valleys/lwr slopes...57-61
Ridges/upr slopes....53-60
* Max Humidity.......
Valleys/lwr slopes...64-76 percent
Ridges/upr slopes....54-69 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...90-95
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...19-25 percent
Ridges/upr slopes....32-40 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southwest 5 mph in the afternoon.
Ridges/upr slopes....North winds 5 mph...shifting to the west 5
to 6 mph in the afternoon.
* Mixing Height..........9700 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ276-011430-
Interior Mendocino-
1226 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-59
Ridges/upr slopes....53-61
* Max Humidity.......
Valleys/lwr slopes...76-91 percent
Ridges/upr slopes....70-85 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...80-88
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...46-56 percent
Ridges/upr slopes....49-59 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........3300 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...52-58
Ridges/upr slopes....52-60
* Max Humidity.......
Valleys/lwr slopes...78-93 percent
Ridges/upr slopes....70-85 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...79-87
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...46-56 percent
Ridges/upr slopes....49-59 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........4000 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ277-011430-
W Mendocino NF/E Mendocino Unit-
1226 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...54-62
Ridges/upr slopes....57-65
* Max Humidity.......
Valleys/lwr slopes...67-82 percent
Ridges/upr slopes....53-63 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph...shifting to
the northeast 5 to 6 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...86-94
Ridges/upr slopes....76-84
* Min Humidity.......
Valleys/lwr slopes...27-35 percent
Ridges/upr slopes....27-35 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........8200 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Clear.
* Min Temperature.......
Valleys/lwr slopes...53-60
Ridges/upr slopes....56-64
* Max Humidity.......
Valleys/lwr slopes...69-84 percent
Ridges/upr slopes....54-64 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...86-94
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...29-37 percent
Ridges/upr slopes....30-38 percent
* 20-Foot Winds...
Valleys/lwr slopes...North winds 5 mph...shifting to the west 5
to 7 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 mph...shifting to the
southwest 5 to 7 mph in the afternoon.
* Mixing Height..........7800 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ264-011430-
Lake County Portion of Lake/Napa/Sonoma RU-
1226 PM PDT Thu Jul 31 2025
.TONIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 57
Ridges/upr slopes....64-68
* Max Humidity.......
Valleys/lwr slopes...69 percent
Ridges/upr slopes....47-57 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...around 87
Ridges/upr slopes....80-84
* Min Humidity.......
Valleys/lwr slopes...27 percent
Ridges/upr slopes....30-38 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 6 to 9 mph.
Ridges/upr slopes....West winds 5 to 9 mph.
* Mixing Height..........8300 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Clear.
* Min Temperature.......
Valleys/lwr slopes...around 55
Ridges/upr slopes....62-68
* Max Humidity.......
Valleys/lwr slopes...73 percent
Ridges/upr slopes....47-57 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...around 86
Ridges/upr slopes....79-83
* Min Humidity.......
Valleys/lwr slopes...29 percent
Ridges/upr slopes....32-40 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph...shifting to
the west 5 to 8 mph in the afternoon.
Ridges/upr slopes....Northwest winds 5 to 8 mph...shifting to
the west in the afternoon.
* Mixing Height..........8000 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
.EXTENDED FORECAST FOR DAYS 3 THROUGH 5...
...Northwest California Coast...
.SUNDAY...Mostly cloudy. Lows in the lower to mid 50s. Highs
60 to 65. Northwest winds 5 mph.
.MONDAY...Mostly cloudy. Lows in the lower to mid 50s. Highs
60 to 67. Northwest winds 5 mph.
.TUESDAY...Partly cloudy. Lows in the lower to mid 50s. Highs
63 to 69. North winds 5 mph.
...Northwest California Interior...
.SUNDAY...Mostly clear. Lows 54 to 62. Highs 76 to 89. Northwest
winds 5 mph.
.MONDAY...Mostly clear. Lows 50 to 58. Highs 77 to 88. Northwest
winds 5 mph.
.TUESDAY...Mostly clear. Lows 54 to 62. Highs 82 to 93. Northwest
winds 5 mph.
.6 to 10 DAY OUTLOOK...Wednesday August 6 THROUGH Sunday August 10, 2025...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
$$
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