Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
533
FNUS56 KEKA 232015
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE Eureka CA
115 PM PDT Sat Aug 23 2025
...HOT AND VERY DRY CONDITIONS WILL INCREASE FIRE DANGER
ACROSS THE INTERIOR THROUGH THE WEEKEND...
...VERY SLIGHT CHANCES FOR DRY THUNDERSTORMS IN TRINITY COUNTY
SATURDAY AND SUNDAY, GREAT CHANCES MONDAY TUESDAY...
.DISCUSSION...Hot and very dry weather will continue to peak today with
the hottest valleys reaching over 100 with exceptionally dry RH
in the single digits. Overnight recoveries have also become
increasingly poor at mid and upper elevations as low as 30 percent.
Similar hot and dry conditions will continue through the weekend.
There is a very slight chance (5-10%) of dry thunderstorms over
the Trinity Alps Saturday and Sunday. Thunderstorm chances over
high terrain will increase early next week but any storms will
also become increasingly wet.
CAZ201-241400-
North Coast-
115 PM PDT Sat Aug 23 2025
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy dense fog.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...55-61
Ridges/upr slopes....56-64
* Max Humidity.......
Valleys/lwr slopes...74-89 percent
Ridges/upr slopes....60-75 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Variable 2 to 4 mph...becoming north 5 mph
after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy. Patchy dense fog in the
morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...76-84
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...73-83 percent
Ridges/upr slopes....63-73 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........1900 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY NIGHT...
* Sky/Weather............Partly cloudy. Patchy dense fog in the
evening. Patchy fog early in the morning.
* Min Temperature.......
Valleys/lwr slopes...55-61
Ridges/upr slopes....57-65
* Max Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....66-81 percent
* 20-Foot Winds...
Valleys/lwr slopes...North winds 5 to 7 mph.
Ridges/upr slopes....Northwest winds 5 to 6 mph...shifting to
the north after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.MONDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
dense fog late in the morning.
* Max Temperature.......
Valleys/lwr slopes...77-85
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...74-84 percent
Ridges/upr slopes....64-74 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
west 5 to 7 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 mph...shifting to the
west 5 to 6 mph in the afternoon.
* Mixing Height..........2200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ202-241400-
Coastal Mendocino-
115 PM PDT Sat Aug 23 2025
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy dense fog in the evening. Patchy
fog late in the night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-55
Ridges/upr slopes....51-57
* Max Humidity.......
Valleys/lwr slopes...82-97 percent
Ridges/upr slopes....73-88 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph.
Ridges/upr slopes....Northwest winds 5 to 6 mph.
* Mixing Height..........100 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...68-76
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...68-83 percent
Ridges/upr slopes....58-68 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........1400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy
then becoming partly cloudy. Patchy fog
after midnight.
* Min Temperature.......
Valleys/lwr slopes...53-56
Ridges/upr slopes....52-58
* Max Humidity.......
Valleys/lwr slopes...82-97 percent
Ridges/upr slopes....71-86 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 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.
.MONDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog early in the morning.
* Max Temperature.......
Valleys/lwr slopes...70-78
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...67-82 percent
Ridges/upr slopes....54-64 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....Variable 2 to 4 mph...becoming southwest 5
to 6 mph in the afternoon.
* Mixing Height..........1400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ203-204-241400-
Upper Smith-Lower Middle Klamath-
115 PM PDT Sat Aug 23 2025
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy smoke late in the
night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...64-67
Ridges/upr slopes....66-70
* Max Humidity.......
Valleys/lwr slopes...47-57 percent
Ridges/upr slopes....34-44 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....Northwest winds 5 to 6 mph...shifting to
the east 5 to 7 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny. Patchy smoke.
* Chance Lightning.......0% increasing to 20% in the afternoon.
* Max Temperature.......
Valleys/lwr slopes...92-100
Ridges/upr slopes....80-88
* Min Humidity.......
Valleys/lwr slopes...33-41 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....Southeast winds 5 to 6 mph...shifting to
the west 5 to 7 mph in the afternoon.
* Mixing Height..........6200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY NIGHT...
* Sky/Weather............Partly cloudy. Slight chance of showers
and thunderstorms.
* Min Temperature.......
Valleys/lwr slopes...64-67
Ridges/upr slopes....65-69
* Max Humidity.......
Valleys/lwr slopes...57-72 percent
Ridges/upr slopes....45-55 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph...shifting to
the northeast 5 to 6 mph after midnight.
Ridges/upr slopes....North winds 5 to 6 mph...shifting to the
northeast 5 to 7 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.MONDAY...
* Sky/Weather............Sunny. Slight chance of thunderstorms in
the afternoon.
* Max Temperature.......
Valleys/lwr slopes...93-101
Ridges/upr slopes....79-87
* Min Humidity.......
Valleys/lwr slopes...37-45 percent
Ridges/upr slopes....32-42 percent
* 20-Foot Winds...
Valleys/lwr slopes...East winds 5 to 6 mph...shifting to the
west in the afternoon.
Ridges/upr slopes....East winds 5 to 6 mph...shifting to the
northwest in the afternoon.
* Mixing Height..........9300 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ211-212-241400-
Hoopa-Van Duzen/Mad River-
115 PM PDT Sat Aug 23 2025
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy smoke late in the
night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...60-66
Ridges/upr slopes....60-68
* Max Humidity.......
Valleys/lwr slopes...54-69 percent
Ridges/upr slopes....40-50 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....Southwest winds 5 to 6 mph...shifting to
the east after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny. Patchy smoke until late afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...93-101
Ridges/upr slopes....83-91
* Min Humidity.......
Valleys/lwr slopes...24-32 percent
Ridges/upr slopes....27-35 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Southeast winds 5 to 6 mph...shifting to
the southwest 5 to 7 mph in the afternoon.
* Mixing Height..........5000 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...61-67
Ridges/upr slopes....60-68
* Max Humidity.......
Valleys/lwr slopes...57-72 percent
Ridges/upr slopes....47-57 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph...shifting to
the northeast 5 mph after midnight.
Ridges/upr slopes....Northwest winds 5 to 6 mph...shifting to
the east 5 to 7 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.MONDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...94-102
Ridges/upr slopes....83-91
* Min Humidity.......
Valleys/lwr slopes...26-34 percent
Ridges/upr slopes....30-38 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
west 5 to 9 mph in the afternoon.
Ridges/upr slopes....East winds 5 to 7 mph...shifting to the
west 5 to 6 mph in the afternoon.
* Mixing Height..........8900 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ283-241400-
Trinity-
115 PM PDT Sat Aug 23 2025
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy smoke in the late
evening and overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...64-69
Ridges/upr slopes....61-69
* Max Humidity.......
Valleys/lwr slopes...41-51 percent
Ridges/upr slopes....32-42 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 mph...shifting to the
northeast after midnight.
Ridges/upr slopes....Southeast winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny. Patchy smoke until late afternoon.
Slight chance of showers and thunderstorms
late in the afternoon.
* Chance Lightning.......20%.
* Max Temperature.......
Valleys/lwr slopes...95-101
Ridges/upr slopes....81-89
* Min Humidity.......
Valleys/lwr slopes...15-20 percent
Ridges/upr slopes....20-28 percent
* 20-Foot Winds...
Valleys/lwr slopes...East winds 5 to 7 mph.
Ridges/upr slopes....Southeast winds 5 to 8 mph...shifting to
the south in the afternoon.
* Mixing Height..........9200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY NIGHT...
* Sky/Weather............Mostly clear. Slight chance of showers and
thunderstorms through the night.
* Min Temperature.......
Valleys/lwr slopes...63-68
Ridges/upr slopes....60-68
* Max Humidity.......
Valleys/lwr slopes...52-62 percent
Ridges/upr slopes....41-51 percent
* 20-Foot Winds...
Valleys/lwr slopes...East winds 5 mph in the evening...becoming
downslope/downvalley 2 to 4 mph.
Ridges/upr slopes....North winds 5 to 6 mph...shifting to the
northeast after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.MONDAY...
* Sky/Weather............Sunny then becoming partly cloudy. Chance
of showers and slight chance of
thunderstorms in the late morning and
afternoon.
* Max Temperature.......
Valleys/lwr slopes...95-101
Ridges/upr slopes....81-89
* Min Humidity.......
Valleys/lwr slopes...18-23 percent
Ridges/upr slopes....25-33 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southeast 5 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to
the southeast in the afternoon.
* Mixing Height..........12200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ276-241400-
Interior Mendocino-
115 PM PDT Sat Aug 23 2025
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...56-64
Ridges/upr slopes....57-65
* Max Humidity.......
Valleys/lwr slopes...56-71 percent
Ridges/upr slopes....54-69 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....West 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.
.SUNDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...87-95
Ridges/upr slopes....81-89
* Min Humidity.......
Valleys/lwr slopes...34-42 percent
Ridges/upr slopes....38-46 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph.
Ridges/upr slopes....Southwest winds 5 to 9 mph.
* Mixing Height..........3300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...57-65
Ridges/upr slopes....58-66
* Max Humidity.......
Valleys/lwr slopes...57-72 percent
Ridges/upr slopes....55-70 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 6 mph...shifting to
the northeast 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.MONDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...89-97
Ridges/upr slopes....84-92
* Min Humidity.......
Valleys/lwr slopes...33-41 percent
Ridges/upr slopes....36-44 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 mph...shifting to the
southwest 5 to 6 mph in the afternoon.
* Mixing Height..........5900 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ277-241400-
W Mendocino NF/E Mendocino Unit-
115 PM PDT Sat Aug 23 2025
.TONIGHT...
* Sky/Weather............Mostly clear. Patchy smoke in the late
evening and early morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...59-67
Ridges/upr slopes....65-72
* Max Humidity.......
Valleys/lwr slopes...42-52 percent
Ridges/upr slopes....30-38 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....South winds 5 to 6 mph...shifting to the
southeast after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...94-102
Ridges/upr slopes....83-91
* Min Humidity.......
Valleys/lwr slopes...17-22 percent
Ridges/upr slopes....17-25 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph.
Ridges/upr slopes....Southwest winds 5 to 9 mph.
* Mixing Height..........7400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...61-69
Ridges/upr slopes....64-72
* Max Humidity.......
Valleys/lwr slopes...46-56 percent
Ridges/upr slopes....32-42 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....West winds 5 to 6 mph...shifting to the
east 5 to 7 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.MONDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...95-103
Ridges/upr slopes....83-91
* Min Humidity.......
Valleys/lwr slopes...19-24 percent
Ridges/upr slopes....19-26 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....East winds 5 to 6 mph...shifting to the
south 5 to 7 mph in the afternoon.
* Mixing Height..........10800 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ264-241400-
Lake County Portion of Lake/Napa/Sonoma RU-
115 PM PDT Sat Aug 23 2025
.TONIGHT...
* Sky/Weather............Mostly clear. Patchy smoke.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 64
Ridges/upr slopes....70-74
* Max Humidity.......
Valleys/lwr slopes...40 percent
Ridges/upr slopes....29-37 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Southwest winds 5 to 8 mph decreasing to 5
mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY...
* Sky/Weather............Sunny. Patchy smoke.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...around 94
Ridges/upr slopes....86-91
* Min Humidity.......
Valleys/lwr slopes...15 percent
Ridges/upr slopes....19-24 percent
* 20-Foot Winds...
Valleys/lwr slopes...East winds 5 to 6 mph...shifting to the
southwest 5 to 8 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 to 6 mph...shifting to
the south 6 to 9 mph in the afternoon.
* Mixing Height..........5800 ft AGL.
* Chc of Wetting Rain....0 percent.
.SUNDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy smoke early in the
evening.
* Min Temperature.......
Valleys/lwr slopes...around 64
Ridges/upr slopes....70-74
* Max Humidity.......
Valleys/lwr slopes...43 percent
Ridges/upr slopes....33-43 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 7 mph...shifting to the
north after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.MONDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...around 95
Ridges/upr slopes....88-92
* Min Humidity.......
Valleys/lwr slopes...17 percent
Ridges/upr slopes....21-27 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northeast winds 5 mph...shifting to the
south 6 mph in the afternoon.
Ridges/upr slopes....East winds 5 to 9 mph...shifting to the
south 5 to 8 mph in the afternoon.
* Mixing Height..........7300 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
.EXTENDED FORECAST FOR DAYS 3 THROUGH 5...
...Northwest California Coast...
.TUESDAY...Partly cloudy. Patchy fog. Lows 54 to 59. Highs 65 to
73. Winds generally less than 5 mph.
.WEDNESDAY...Mostly cloudy. Patchy fog. Lows in the 50s. Highs
64 to 71. Winds generally less than 5 mph.
.THURSDAY...Mostly cloudy. Patchy fog. Lows in the lower to mid
50s. Highs 65 to 70. Winds generally less than 5 mph.
...Northwest California Interior...
.TUESDAY...Mostly clear. Lows 62 to 70. Highs 88 to 98. Northwest
winds 5 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows 59 to 67. Highs 84 to 94. Southwest winds
5 mph.
.THURSDAY...Mostly clear. Lows 55 to 63. Highs 81 to 92.
Southwest winds 5 mph.
.6 to 10 DAY OUTLOOK...Friday August 29 THROUGH Tuesday September 2, 2025...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
$$
visit us at www.weather.gov/eureka