Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
329
FNUS56 KEKA 292202
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE Eureka CA
302 PM PDT Fri Aug 29 2025
...ELEVATED FIRE WEATHER THREAT DUE TO LOW RH AND BREEZY WEST-
SOUTHWEST WINDS FOR HIGHER TERRAIN IN ZONES 277, 283 & 264 TODAY
AND THIS WEEKEND DURING THE AFTERNOON INTO EARLY EVENING...
.DISCUSSION...Dry weather will continue through early next week,
with low daytime RH values in the teens and single digits,
especially in Trinity, Lake, and northeastern Mendocino. Winds
will mostly be diurnally and terrain driven, with a period of
enhanced breezy conditions over the ridges today and this
weekend, with wind gusts up to 25 mph, especially in Trinity and
Lake counties. Some slight improvement in the RH recoveries are
expected for tonight, but poor overnight recoveries with values in
the upper 20`s to upper 30`s is forecast for the far interior
ridges. Onshore marine moisture will continue to promote good RH
recoveries for area below the inversion (<2500 feet). A warming
and drying trend is expected early through mid next week as the
high pressure build in, with high temperatures across the interior
valleys peaking in the 90s and into 100s on Tuesday and
Wednesday. There is a low chance (<10%) for a threat of afternoon
and early evening thunderstorms next Tuesday and Wednesday.
CAZ201-301615-
North Coast-
302 PM PDT Fri Aug 29 2025
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy dense fog after
midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-55
Ridges/upr slopes....50-58
* Max Humidity.......
Valleys/lwr slopes...74-89 percent
Ridges/upr slopes....60-75 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....North winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
then becoming sunny. Patchy dense fog
early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...74-82
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...64-74 percent
Ridges/upr slopes....54-64 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........2400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature.......
Valleys/lwr slopes...49-55
Ridges/upr slopes....50-58
* Max Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....65-80 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy then becoming sunny.
* Max Temperature.......
Valleys/lwr slopes...72-80
Ridges/upr slopes....68-76
* Min Humidity.......
Valleys/lwr slopes...71-81 percent
Ridges/upr slopes....62-72 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........2600 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ202-301615-
Coastal Mendocino-
302 PM PDT Fri Aug 29 2025
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy dense fog in the late evening and
overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...50-55
Ridges/upr slopes....48-56
* Max Humidity.......
Valleys/lwr slopes...78-93 percent
Ridges/upr slopes....68-83 percent
* 20-Foot Winds...
Valleys/lwr slopes...North winds 5 to 9 mph.
Ridges/upr slopes....North winds 5 to 9 mph.
* Mixing Height..........100 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...70-78
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...61-71 percent
Ridges/upr slopes....45-55 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 12 mph.
Ridges/upr slopes....Northwest winds 5 to 12 mph.
* Mixing Height..........1500 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...51-56
Ridges/upr slopes....48-56
* Max Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....68-83 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........100 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...68-76
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...62-77 percent
Ridges/upr slopes....51-61 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........1600 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ203-204-301615-
Upper Smith-Lower Middle Klamath-
302 PM PDT Fri Aug 29 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...55-58
Ridges/upr slopes....around 60
* Max Humidity.......
Valleys/lwr slopes...54-64 percent
Ridges/upr slopes....39-49 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 8 mph.
Ridges/upr slopes....Southwest winds 5 to 8 mph...shifting to
the southeast 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....70-78
* Min Humidity.......
Valleys/lwr slopes...29-37 percent
Ridges/upr slopes....27-35 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph.
Ridges/upr slopes....Southwest winds 5 to 9 mph.
* Mixing Height..........4400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature.......
Valleys/lwr slopes...50-56
Ridges/upr slopes....56-59
* Max Humidity.......
Valleys/lwr slopes...58-73 percent
Ridges/upr slopes....40-50 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
Ridges/upr slopes....Northwest winds 5 to 7 mph...shifting to
the northeast 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....70-78
* Min Humidity.......
Valleys/lwr slopes...40-48 percent
Ridges/upr slopes....32-42 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
west 5 to 8 mph in the afternoon.
Ridges/upr slopes....Northeast 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.
$$
CAZ211-212-301615-
Hoopa-Van Duzen/Mad River-
302 PM PDT Fri Aug 29 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-58
Ridges/upr slopes....52-60
* Max Humidity.......
Valleys/lwr slopes...61-76 percent
Ridges/upr slopes....43-53 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Southwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny then becoming partly cloudy then
becoming sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...85-93
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...22-30 percent
Ridges/upr slopes....26-34 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........4700 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...50-57
Ridges/upr slopes....49-57
* Max Humidity.......
Valleys/lwr slopes...63-78 percent
Ridges/upr slopes....40-50 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....North winds 5 to 9 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...84-92
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...28-36 percent
Ridges/upr slopes....35-43 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northeast winds 5 mph...shifting to the
west 5 to 7 mph in the afternoon.
* Mixing Height..........5000 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ283-301615-
Trinity-
302 PM PDT Fri Aug 29 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-58
Ridges/upr slopes....53-60
* Max Humidity.......
Valleys/lwr slopes...47-57 percent
Ridges/upr slopes....37-47 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 8 mph.
Ridges/upr slopes....Southwest winds 5 to 7 mph...shifting to
the south 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny then becoming partly cloudy then
becoming sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...91-97
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...13-16 percent
Ridges/upr slopes....15-22 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
west 5 to 10 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 to 7 mph...shifting to
the southwest in the afternoon.
* Mixing Height..........8800 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy smoke after midnight.
* Min Temperature.......
Valleys/lwr slopes...55-60
Ridges/upr slopes....53-61
* Max Humidity.......
Valleys/lwr slopes...48-58 percent
Ridges/upr slopes....32-42 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 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.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...92-98
Ridges/upr slopes....76-84
* Min Humidity.......
Valleys/lwr slopes...12-15 percent
Ridges/upr slopes....17-25 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
south 5 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to
the south 5 to 8 mph in the afternoon.
* Mixing Height..........8500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ276-301615-
Interior Mendocino-
302 PM PDT Fri Aug 29 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-60
Ridges/upr slopes....53-61
* Max Humidity.......
Valleys/lwr slopes...54-69 percent
Ridges/upr slopes....54-64 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...85-93
Ridges/upr slopes....80-88
* Min Humidity.......
Valleys/lwr slopes...27-35 percent
Ridges/upr slopes....30-38 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 12 mph.
Ridges/upr slopes....Northwest winds 5 to 12 mph.
* Mixing Height..........4100 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...52-60
Ridges/upr slopes....52-60
* Max Humidity.......
Valleys/lwr slopes...59-74 percent
Ridges/upr slopes....53-63 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 12 mph.
Ridges/upr slopes....Northwest winds 5 to 12 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....78-86
* Min Humidity.......
Valleys/lwr slopes...34-42 percent
Ridges/upr slopes....38-46 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........4500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ277-301615-
W Mendocino NF/E Mendocino Unit-
302 PM PDT Fri Aug 29 2025
.TONIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-60
Ridges/upr slopes....58-65
* Max Humidity.......
Valleys/lwr slopes...51-61 percent
Ridges/upr slopes....37-47 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 7 mph...shifting to the
northwest 5 mph after midnight.
Ridges/upr slopes....Southwest 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.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...89-96
Ridges/upr slopes....78-86
* Min Humidity.......
Valleys/lwr slopes...15-20 percent
Ridges/upr slopes....15-20 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 10 mph.
Ridges/upr slopes....West winds 5 to 10 mph.
* Mixing Height..........7400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...51-59
Ridges/upr slopes....58-65
* Max Humidity.......
Valleys/lwr slopes...48-58 percent
Ridges/upr slopes....27-35 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 7 mph...shifting to
the northeast 5 to 6 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...88-96
Ridges/upr slopes....78-86
* Min Humidity.......
Valleys/lwr slopes...17-24 percent
Ridges/upr slopes....15-23 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northeast winds 5 to 6 mph...shifting to
the west 5 to 8 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to
the southwest 5 to 7 mph in the afternoon.
* Mixing Height..........7500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ264-301615-
Lake County Portion of Lake/Napa/Sonoma RU-
302 PM PDT Fri Aug 29 2025
.TONIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 56
Ridges/upr slopes....65-68
* Max Humidity.......
Valleys/lwr slopes...44 percent
Ridges/upr slopes....31-39 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...around 90
Ridges/upr slopes....83-88
* Min Humidity.......
Valleys/lwr slopes...14 percent
Ridges/upr slopes....14-20 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........8600 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Clear.
* Min Temperature.......
Valleys/lwr slopes...around 57
Ridges/upr slopes....65-69
* Max Humidity.......
Valleys/lwr slopes...47 percent
Ridges/upr slopes....28-36 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 10 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...around 89
Ridges/upr slopes....83-86
* Min Humidity.......
Valleys/lwr slopes...17 percent
Ridges/upr slopes....17-25 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........7600 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
.EXTENDED FORECAST FOR DAYS 3 THROUGH 5...
...Northwest California Coast...
.LABOR DAY...Partly cloudy. Patchy fog. Lows in the lower to mid
50s. Highs 64 to 72. North winds 5 mph.
.TUESDAY...Partly cloudy. Lows in the lower to mid 50s. Highs
66 to 74. North winds 5 mph.
.WEDNESDAY...Partly cloudy. Lows in the 50s. Highs 66 to 75.
Winds generally less than 5 mph.
...Northwest California Interior...
.LABOR DAY...Clear. Lows 55 to 63. Highs 88 to 99. Northwest
winds 5 mph.
.TUESDAY...Mostly clear. Lows 60 to 68. Highs 91 to 102. North
winds 5 mph.
.WEDNESDAY...Mostly clear. Lows 60 to 68. Highs 90 to 101.
Northeast winds 5 mph.
.6 to 10 DAY OUTLOOK...Thursday September 4 THROUGH Monday September 8, 2025...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
$$
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