Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
866
FNUS56 KEKA 131959
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE Eureka CA
1259 PM PDT Wed Aug 13 2025
...GUSTY NORTHWEST WINDS AND DRY CONDITIONS WILL GENERATE ENHANCED
FIRE WEATHER CONCERNS THURSDAY AND FRIDAY ACROSS THE INTERIOR BUT
ESPECIALLY IN LAKE, MENDOCINO, AND TRINITY COUNTIES...
.DISCUSSION...Hot, dry weather will continue to ease for the next few
days in the interior, with a shallow marine layer mainly confined to
the immediate coast. The marine layer will trend deeper through
late week as low pressure rebuilds aloft helping push marine air
further inland. This will bring a gradual cooling trend and
improved RH recoveries, though daytime RH will generally still
remain no better than about 25 percent through Friday. On Thursday
and especially Friday, fire danger will be elevated, especially
in Lake and Mendocino Counties, with enhanced onshore winds
gusting up to 30 mph in the afternoon.
CAZ201-141345-
North Coast-
1259 PM PDT Wed Aug 13 2025
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy dense fog after
midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-56
Ridges/upr slopes....53-59
* Max Humidity.......
Valleys/lwr slopes...83-98 percent
Ridges/upr slopes....72-87 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Northwest winds 7 to 14 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Partly cloudy then becoming sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...71-79
Ridges/upr slopes....66-74
* Min Humidity.......
Valleys/lwr slopes...68-78 percent
Ridges/upr slopes....61-71 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 8 to 15 mph.
Ridges/upr slopes....Northwest winds 10 to 17 mph.
* Mixing Height..........2200 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...52-56
Ridges/upr slopes....52-58
* Max Humidity.......
Valleys/lwr slopes...83-98 percent
Ridges/upr slopes....74-89 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 8 to 15 mph.
Ridges/upr slopes....Northwest winds 9 to 16 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Partly cloudy then becoming sunny then
becoming partly cloudy.
* Max Temperature.......
Valleys/lwr slopes...71-79
Ridges/upr slopes....67-75
* Min Humidity.......
Valleys/lwr slopes...72-87 percent
Ridges/upr slopes....70-85 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 7 to 14 mph.
Ridges/upr slopes....Northwest winds 7 to 14 mph.
* Mixing Height..........3100 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ202-141345-
Coastal Mendocino-
1259 PM PDT Wed Aug 13 2025
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy
then becoming partly cloudy. Patchy fog in
the late evening and overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-55
Ridges/upr slopes....50-55
* Max Humidity.......
Valleys/lwr slopes...91-100 percent
Ridges/upr slopes....82-97 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........100 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...67-75
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...65-80 percent
Ridges/upr slopes....51-61 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 7 to 14 mph.
Ridges/upr slopes....Northwest winds 7 to 14 mph.
* Mixing Height..........1500 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...53-58
Ridges/upr slopes....52-60
* Max Humidity.......
Valleys/lwr slopes...78-93 percent
Ridges/upr slopes....72-87 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 7 to 14 mph.
Ridges/upr slopes....Northwest winds 8 to 15 mph.
* Mixing Height..........100 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...67-75
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...73-88 percent
Ridges/upr slopes....61-71 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 7 to 14 mph.
Ridges/upr slopes....Northwest winds 8 to 15 mph.
* Mixing Height..........1800 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ203-204-141345-
Upper Smith-Lower Middle Klamath-
1259 PM PDT Wed Aug 13 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...56-60
Ridges/upr slopes....around 60
* Max Humidity.......
Valleys/lwr slopes...68-83 percent
Ridges/upr slopes....51-61 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 10 mph...shifting to
the southeast 5 to 6 mph after midnight.
Ridges/upr slopes....North winds 5 to 9 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...84-92
Ridges/upr slopes....70-78
* Min Humidity.......
Valleys/lwr slopes...31-39 percent
Ridges/upr slopes....32-42 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 7 mph increasing to 5
to 10 mph in the afternoon.
* Mixing Height..........5400 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...55-58
Ridges/upr slopes....55-58
* Max Humidity.......
Valleys/lwr slopes...69-84 percent
Ridges/upr slopes....54-69 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph...shifting to
the north 5 mph after midnight.
Ridges/upr slopes....North winds 5 to 10 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...79-87
Ridges/upr slopes....66-74
* Min Humidity.......
Valleys/lwr slopes...54-64 percent
Ridges/upr slopes....50-60 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
west 5 to 11 mph in the afternoon.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........5500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ211-212-141345-
Hoopa-Van Duzen/Mad River-
1259 PM PDT Wed Aug 13 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...55-59
Ridges/upr slopes....53-61
* Max Humidity.......
Valleys/lwr slopes...76-91 percent
Ridges/upr slopes....59-74 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...27-35 percent
Ridges/upr slopes....35-43 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 10 to 17 mph.
Ridges/upr slopes....Northwest winds 10 to 17 mph.
* Mixing Height..........4000 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...54-58
Ridges/upr slopes....51-58
* Max Humidity.......
Valleys/lwr slopes...75-90 percent
Ridges/upr slopes....61-76 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 6 to 13 mph.
Ridges/upr slopes....Northwest winds 6 to 13 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...80-88
Ridges/upr slopes....71-79
* Min Humidity.......
Valleys/lwr slopes...42-52 percent
Ridges/upr slopes....49-59 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 11 to 18 mph.
Ridges/upr slopes....Northwest winds 11 to 18 mph.
* Mixing Height..........4800 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ283-141345-
Trinity-
1259 PM PDT Wed Aug 13 2025
.TONIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...58-62
Ridges/upr slopes....54-61
* Max Humidity.......
Valleys/lwr slopes...63-74 percent
Ridges/upr slopes....51-61 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph decreasing to 5
to 6 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...90-95
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...16-21 percent
Ridges/upr slopes....21-29 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 8 to 15 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph increasing to 6
to 13 mph in the afternoon.
* Mixing Height..........7800 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Clear.
* Min Temperature.......
Valleys/lwr slopes...56-60
Ridges/upr slopes....52-59
* Max Humidity.......
Valleys/lwr slopes...58-71 percent
Ridges/upr slopes....52-62 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 8 to 15 mph...shifting to the
southwest 5 to 10 mph after midnight.
Ridges/upr slopes....Northwest winds 7 to 14 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...86-92
Ridges/upr slopes....70-78
* Min Humidity.......
Valleys/lwr slopes...24-31 percent
Ridges/upr slopes....33-43 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 8 to 15 mph.
Ridges/upr slopes....Northwest winds 8 to 15 mph.
* Mixing Height..........7300 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ276-141345-
Interior Mendocino-
1259 PM PDT Wed Aug 13 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-61
Ridges/upr slopes....54-62
* Max Humidity.......
Valleys/lwr slopes...75-90 percent
Ridges/upr slopes....70-85 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 12 mph.
Ridges/upr slopes....Northwest winds 5 to 12 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...82-90
Ridges/upr slopes....78-86
* Min Humidity.......
Valleys/lwr slopes...36-44 percent
Ridges/upr slopes....36-46 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 10 to 17 mph.
Ridges/upr slopes....Northwest winds 10 to 17 mph.
* Mixing Height..........3600 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...55-63
Ridges/upr slopes....55-63
* Max Humidity.......
Valleys/lwr slopes...67-82 percent
Ridges/upr slopes....62-77 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 10 to 17 mph.
Ridges/upr slopes....Northwest winds 10 to 17 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...80-88
Ridges/upr slopes....76-84
* Min Humidity.......
Valleys/lwr slopes...45-55 percent
Ridges/upr slopes....47-57 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 11 to 21 mph.
Ridges/upr slopes....Northwest winds 11 to 21 mph.
* Mixing Height..........4200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ277-141345-
W Mendocino NF/E Mendocino Unit-
1259 PM PDT Wed Aug 13 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...54-62
Ridges/upr slopes....59-66
* Max Humidity.......
Valleys/lwr slopes...65-80 percent
Ridges/upr slopes....48-58 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph...shifting to
the north 5 to 6 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...88-96
Ridges/upr slopes....78-86
* Min Humidity.......
Valleys/lwr slopes...19-25 percent
Ridges/upr slopes....20-28 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 9 to 16 mph.
Ridges/upr slopes....Northwest winds 9 to 16 mph.
* Mixing Height..........6700 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...53-61
Ridges/upr slopes....57-65
* Max Humidity.......
Valleys/lwr slopes...59-74 percent
Ridges/upr slopes....45-55 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 6 to 13 mph.
Ridges/upr slopes....Northwest winds 6 to 13 mph.
* 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....75-83
* Min Humidity.......
Valleys/lwr slopes...29-36 percent
Ridges/upr slopes....31-39 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 10 to 17 mph.
Ridges/upr slopes....Northwest winds 10 to 17 mph.
* Mixing Height..........6800 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ264-141345-
Lake County Portion of Lake/Napa/Sonoma RU-
1259 PM PDT Wed Aug 13 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 56
Ridges/upr slopes....64-67
* Max Humidity.......
Valleys/lwr slopes...72 percent
Ridges/upr slopes....49-59 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...around 88
Ridges/upr slopes....81-86
* Min Humidity.......
Valleys/lwr slopes...22 percent
Ridges/upr slopes....24-32 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 6 to 12 mph.
Ridges/upr slopes....Northwest winds 5 to 12 mph.
* Mixing Height..........6400 ft AGL.
* Chc of Wetting Rain....0 percent.
.THURSDAY NIGHT...
* Sky/Weather............Clear.
* Min Temperature.......
Valleys/lwr slopes...around 58
Ridges/upr slopes....65-69
* Max Humidity.......
Valleys/lwr slopes...59 percent
Ridges/upr slopes....40-50 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 8 to 15 mph.
Ridges/upr slopes....Northwest winds 8 to 15 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...around 84
Ridges/upr slopes....78-82
* Min Humidity.......
Valleys/lwr slopes...31 percent
Ridges/upr slopes....34-42 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 12 to 19 mph.
Ridges/upr slopes....Northwest winds 12 to 19 mph.
* Mixing Height..........7600 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
.EXTENDED FORECAST FOR DAYS 3 THROUGH 5...
...Northwest California Coast...
.SATURDAY...Mostly cloudy with chance of rain. Patchy fog. Lows
in the mid to upper 50s. Highs 63 to 70. Northwest winds 5 mph.
.SUNDAY...Mostly cloudy with slight chance of rain. Patchy fog.
Lows in the mid to upper 50s. Highs 62 to 68. Winds generally
less than 5 mph.
.MONDAY...Mostly cloudy. Patchy fog. Lows in the lower to mid
50s. Highs 62 to 68. Winds generally less than 5 mph.
...Northwest California Interior...
.SATURDAY...Mostly clear. Slight chance of rain. Lows 56 to 64.
Highs 77 to 88. Northwest winds 10 mph.
.SUNDAY...Partly cloudy. Lows 55 to 63. Highs 76 to 86. West
winds 5 mph.
.MONDAY...Mostly clear. Lows 51 to 59. Highs 77 to 87. West winds
5 mph.
.6 to 10 DAY OUTLOOK...Tuesday August 19 THROUGH Saturday August 23, 2025...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
$$
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