Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
943
FNUS56 KEKA 282119
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE Eureka CA
219 PM PDT Thu Aug 28 2025
...ELEVATED FIRE WEATHER THREAT DUE TO LOW RH AND BREEZY WEST-
SOUTWEST WINDS FOR HIGHER TERRAIN IN ZONES 277, 283 & 284 FRIDAY
AFTERNOON...
.DISCUSSION...Low daytime RH values in the teens and single
digits over the higher terrain, especially in Trinity, Lake, and
norteastern Mendocino. Winds will mostly be diurnally and terrain
driven, with locally breezy conditions over the ridges. Poor overnight
recoveries with values in the mid 20`s to mid 30`s is forecast for
the far interior ridges, while onshore marine moiture will
continue to promote good RH recoveries for area below the
inversion (<2500 feet). Some slight imporovement in the minimum
RH and recoveries are expected for Friday and through the weekend.
An enhanced breezy west and southwest is forecast for Friday over
the interior higher terrain where wind gusts over 25 mph are
probable (40 to 60%), especially in Trinity and Lake counties.
CAZ201-291545-
North Coast-
219 PM PDT Thu Aug 28 2025
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy dense fog through the night. Slight
chance of drizzle late in the night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-55
Ridges/upr slopes....50-58
* Max Humidity.......
Valleys/lwr slopes...76-91 percent
Ridges/upr slopes....66-81 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 in the evening...becoming
downslope/downvalley 2 to 4 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.......0%.
* Max Temperature.......
Valleys/lwr slopes...72-80
Ridges/upr slopes....68-76
* Min Humidity.......
Valleys/lwr slopes...69-79 percent
Ridges/upr slopes....60-70 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........2200 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy
then becoming partly cloudy.
* Min Temperature.......
Valleys/lwr slopes...49-56
Ridges/upr slopes....50-58
* Max Humidity.......
Valleys/lwr slopes...72-87 percent
Ridges/upr slopes....61-76 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.
.SATURDAY...
* Sky/Weather............Partly cloudy then becoming sunny.
* Max Temperature.......
Valleys/lwr slopes...74-82
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...61-71 percent
Ridges/upr slopes....55-65 percent
* 20-Foot Winds...
Valleys/lwr slopes...North winds 5 mph...shifting to the
northwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to
the northwest in the afternoon.
* Mixing Height..........2700 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ202-291545-
Coastal Mendocino-
219 PM PDT Thu Aug 28 2025
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy fog in the late evening and
overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-54
Ridges/upr slopes....46-54
* Max Humidity.......
Valleys/lwr slopes...83-98 percent
Ridges/upr slopes....75-90 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph.
Ridges/upr slopes....Northwest winds 5 to 7 mph.
* Mixing Height..........100 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...67-75
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...64-79 percent
Ridges/upr slopes....52-62 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........1600 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
* Min Temperature.......
Valleys/lwr slopes...50-54
Ridges/upr slopes....47-55
* Max Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....67-82 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....North winds 5 to 8 mph.
* Mixing Height..........100 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...69-77
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...61-71 percent
Ridges/upr slopes....46-56 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........1600 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ203-204-291545-
Upper Smith-Lower Middle Klamath-
219 PM PDT Thu Aug 28 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...55-60
Ridges/upr slopes....around 60
* Max Humidity.......
Valleys/lwr slopes...52-62 percent
Ridges/upr slopes....40-50 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
Ridges/upr slopes....South winds 5 to 8 mph...shifting to the
southeast after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...84-92
Ridges/upr slopes....71-79
* Min Humidity.......
Valleys/lwr slopes...33-41 percent
Ridges/upr slopes....29-37 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph.
Ridges/upr slopes....Southwest winds 5 to 9 mph.
* Mixing Height..........5600 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Partly cloudy.
* Min Temperature.......
Valleys/lwr slopes...53-58
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 in the
evening...becoming downslope/downvalley 2
to 5 mph.
Ridges/upr slopes....Southwest winds 5 to 9 mph...shifting to
the south 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...82-90
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...31-39 percent
Ridges/upr slopes....29-37 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....East winds 5 mph...shifting to the west 5
to 6 mph in the afternoon.
* Mixing Height..........5300 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ211-212-291545-
Hoopa-Van Duzen/Mad River-
219 PM PDT Thu Aug 28 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-60
Ridges/upr slopes....54-62
* Max Humidity.......
Valleys/lwr slopes...55-70 percent
Ridges/upr slopes....40-50 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....South winds 5 to 7 mph...shifting to the
southeast after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...86-94
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 9 mph.
Ridges/upr slopes....South winds 5 to 9 mph...shifting to the
southwest in the afternoon.
* Mixing Height..........5800 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...52-58
Ridges/upr slopes....51-59
* Max Humidity.......
Valleys/lwr slopes...60-75 percent
Ridges/upr slopes....47-57 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.
* Max Temperature.......
Valleys/lwr slopes...84-92
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...25-33 percent
Ridges/upr slopes....27-35 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....East winds 5 mph...shifting to the west 5
to 6 mph in the afternoon.
* Mixing Height..........5700 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ283-291545-
Trinity-
219 PM PDT Thu Aug 28 2025
.TONIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-61
Ridges/upr slopes....55-63
* Max Humidity.......
Valleys/lwr slopes...41-51 percent
Ridges/upr slopes....31-41 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....South winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny then becoming partly cloudy. Haze in
the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...90-95
Ridges/upr slopes....74-82
* Min Humidity.......
Valleys/lwr slopes...14-19 percent
Ridges/upr slopes....16-24 percent
* 20-Foot Winds...
Valleys/lwr slopes...East winds 5 mph...shifting to the south 5
to 7 mph in the afternoon.
Ridges/upr slopes....South winds 5 to 9 mph.
* Mixing Height..........10100 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...52-60
Ridges/upr slopes....53-60
* Max Humidity.......
Valleys/lwr slopes...48-58 percent
Ridges/upr slopes....36-46 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 8 mph.
Ridges/upr slopes....Southwest winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...91-96
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...14-19 percent
Ridges/upr slopes....16-24 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
south 5 mph in the afternoon.
Ridges/upr slopes....East winds 5 to 6 mph...shifting to the
southwest in the afternoon.
* Mixing Height..........9400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ276-291545-
Interior Mendocino-
219 PM PDT Thu Aug 28 2025
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...47-55
Ridges/upr slopes....52-60
* Max Humidity.......
Valleys/lwr slopes...58-73 percent
Ridges/upr slopes....58-73 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Partly cloudy then becoming sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....78-86
* Min Humidity.......
Valleys/lwr slopes...33-41 percent
Ridges/upr slopes....37-45 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph.
Ridges/upr slopes....Southwest winds 5 to 9 mph.
* Mixing Height..........5000 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...48-56
Ridges/upr slopes....53-61
* Max Humidity.......
Valleys/lwr slopes...56-71 percent
Ridges/upr slopes....53-68 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....78-86
* Min Humidity.......
Valleys/lwr slopes...31-39 percent
Ridges/upr slopes....34-42 percent
* 20-Foot Winds...
Valleys/lwr slopes...North winds 5 to 6 mph...shifting to the
west 5 to 7 mph in the afternoon.
Ridges/upr slopes....North winds 5 to 6 mph...shifting to the
west 5 to 7 mph in the afternoon.
* Mixing Height..........5000 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ277-291545-
W Mendocino NF/E Mendocino Unit-
219 PM PDT Thu Aug 28 2025
.TONIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-60
Ridges/upr slopes....59-67
* Max Humidity.......
Valleys/lwr slopes...46-56 percent
Ridges/upr slopes....30-38 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....South winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...87-95
Ridges/upr slopes....76-84
* Min Humidity.......
Valleys/lwr slopes...17-22 percent
Ridges/upr slopes....18-25 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 11 mph.
Ridges/upr slopes....Southwest winds 5 to 11 mph.
* Mixing Height..........8600 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly clear.
* Min Temperature.......
Valleys/lwr slopes...50-58
Ridges/upr slopes....57-65
* Max Humidity.......
Valleys/lwr slopes...48-58 percent
Ridges/upr slopes....32-42 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 7 mph...shifting to
the northwest 5 mph after midnight.
Ridges/upr slopes....Southwest winds 5 to 8 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.
* Max Temperature.......
Valleys/lwr slopes...88-96
Ridges/upr slopes....77-85
* Min Humidity.......
Valleys/lwr slopes...17-23 percent
Ridges/upr slopes....16-22 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northeast winds 5 mph...shifting to the
west 5 to 6 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..........8600 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ264-291545-
Lake County Portion of Lake/Napa/Sonoma RU-
219 PM PDT Thu Aug 28 2025
.TONIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 59
Ridges/upr slopes....66-70
* Max Humidity.......
Valleys/lwr slopes...43 percent
Ridges/upr slopes....31-39 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph.
Ridges/upr slopes....Northwest winds 5 to 7 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...around 88
Ridges/upr slopes....82-86
* Min Humidity.......
Valleys/lwr slopes...17 percent
Ridges/upr slopes....19-26 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....Southwest winds 5 to 6 mph increasing to 6
to 10 mph in the afternoon.
* Mixing Height..........9600 ft AGL.
* Chc of Wetting Rain....0 percent.
.FRIDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...around 58
Ridges/upr slopes....65-69
* Max Humidity.......
Valleys/lwr slopes...44 percent
Ridges/upr slopes....30-38 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 10 mph.
Ridges/upr slopes....West winds 5 to 10 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...around 88
Ridges/upr slopes....83-86
* Min Humidity.......
Valleys/lwr slopes...17 percent
Ridges/upr slopes....17-25 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph...shifting to
the west in the afternoon.
Ridges/upr slopes....Northwest winds 5 to 7 mph...shifting to
the west 5 to 8 mph in the afternoon.
* Mixing Height..........9300 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
.EXTENDED FORECAST FOR DAYS 3 THROUGH 5...
...Northwest California Coast...
.SUNDAY...Partly cloudy. Lows in the lower to mid 50s. Highs
64 to 70. North winds 5 mph.
.LABOR DAY...Partly cloudy. Patchy fog. Lows in the lower to mid
50s. Highs 63 to 71. North winds 5 mph.
.TUESDAY...Mostly cloudy. Patchy fog. Lows in the lower to mid
50s. Highs 65 to 73. North winds 5 mph.
...Northwest California Interior...
.SUNDAY...Mostly clear. Lows 54 to 62. Highs 84 to 97. Northwest
winds 5 mph.
.LABOR DAY...Mostly clear. Lows 54 to 62. Highs 86 to 98.
Northwest winds 5 mph.
.TUESDAY...Mostly clear. Lows 57 to 65. Highs 89 to 99. Northwest
winds 5 mph.
.6 to 10 DAY OUTLOOK...Wednesday September 3 THROUGH Sunday September 7, 2025...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
$$
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