Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
631
FNUS56 KEKA 211922
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE Eureka CA
1222 PM PDT Mon Jul 21 2025
...ISOLATED TO SCATTERED DRY THUNDERSTORMS POSSIBLE THURSDAY AND
FRIDAY IN ZONES 203, 204, AND 283...
.DISCUSSION...A weak cold front moving through the area will deepen
the marine layer and bring a slight chance for rain to the area.
Wetting rain is unlikely and potential is mostly constrained to the
coast and areas of Trinity County if showers develop in the
afternoon. Cooler temperatures along with higher RHs are forecast.
Thunderstorm confidence remains low (5-10%) outside Siskiyou county
through Wednesday. There is higher confidence (15-20%) in dry
thunderstorms Thursday and Friday, particularly in Siskiyou, but
also in northern Trinity, NE Humboldt, and Del Norte County.
CAZ201-221315-
North Coast-
1222 PM PDT Mon Jul 21 2025
.TONIGHT...
* Sky/Weather............Mostly cloudy. Patchy dense fog in the
late evening and overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-53
Ridges/upr slopes....49-54
* Max Humidity.......
Valleys/lwr slopes...89-100 percent
Ridges/upr slopes....80-95 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.
.TUESDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...66-74
Ridges/upr slopes....62-70
* Min Humidity.......
Valleys/lwr slopes...75-90 percent
Ridges/upr slopes....72-87 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........2400 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy dense fog early in the evening.
Patchy fog after midnight.
* Min Temperature.......
Valleys/lwr slopes...49-54
Ridges/upr slopes....49-56
* Max Humidity.......
Valleys/lwr slopes...85-100 percent
Ridges/upr slopes....76-91 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 to 6 mph...shifting to the
north 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog early in the morning.
* Max Temperature.......
Valleys/lwr slopes...67-75
Ridges/upr slopes....64-72
* Min Humidity.......
Valleys/lwr slopes...73-88 percent
Ridges/upr slopes....69-84 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 west 5 to 6
mph in the afternoon.
* Mixing Height..........2300 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ202-221315-
Coastal Mendocino-
1222 PM PDT Mon Jul 21 2025
.TONIGHT...
* Sky/Weather............Mostly cloudy. Slight chance of rain
through the night. Patchy fog after
midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-54
Ridges/upr slopes....46-54
* Max Humidity.......
Valleys/lwr slopes...91-100 percent
Ridges/upr slopes....85-100 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....10 percent.
.TUESDAY...
* Sky/Weather............Mostly cloudy. Patchy fog early in the
morning. Slight chance of rain in the
morning. Slight chance of rain late in the
afternoon.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...58-66
Ridges/upr slopes....61-69
* Min Humidity.......
Valleys/lwr slopes...82-97 percent
Ridges/upr slopes....70-85 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........2100 ft AGL.
* Chc of Wetting Rain....10 percent.
.TUESDAY NIGHT...
* Sky/Weather............Mostly cloudy. Slight chance of rain
through the night. Patchy fog in the late
evening and overnight.
* Min Temperature.......
Valleys/lwr slopes...50-53
Ridges/upr slopes....46-54
* Max Humidity.......
Valleys/lwr slopes...89-100 percent
Ridges/upr slopes....81-96 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming light winds 2 to 4 mph.
Ridges/upr slopes....West winds 5 to 6 mph in the
evening...becoming light winds 2 to 4 mph.
* Mixing Height..........100 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog in the morning.
* Max Temperature.......
Valleys/lwr slopes...60-68
Ridges/upr slopes....64-72
* Min Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....62-77 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southwest 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..........1900 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ203-204-221315-
Upper Smith-Lower Middle Klamath-
1222 PM PDT Mon Jul 21 2025
.TONIGHT...
* Sky/Weather............Partly cloudy. Areas of smoke late in the
night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-54
Ridges/upr slopes....52-55
* Max Humidity.......
Valleys/lwr slopes...81-96 percent
Ridges/upr slopes....67-79 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 6 mph...shifting to
the northeast after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY...
* Sky/Weather............Sunny. Areas of smoke in the morning.
Slight chance of showers and thunderstorms
early in the afternoon.
* Chance Lightning.......20%.
* Max Temperature.......
Valleys/lwr slopes...80-88
Ridges/upr slopes....66-74
* Min Humidity.......
Valleys/lwr slopes...48-58 percent
Ridges/upr slopes....50-60 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 6 mph...shifting to the
southwest 5 to 8 mph in the afternoon.
Ridges/upr slopes....Northeast winds 5 to 6 mph...shifting to
the west 5 to 7 mph in the afternoon.
* Mixing Height..........5500 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY NIGHT...
* Sky/Weather............Mostly clear. Areas of smoke early in the
morning.
* Min Temperature.......
Valleys/lwr slopes...55-58
Ridges/upr slopes....56-59
* Max Humidity.......
Valleys/lwr slopes...72-87 percent
Ridges/upr slopes....58-71 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 7 mph...shifting to the
northeast 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...81-89
Ridges/upr slopes....68-76
* Min Humidity.......
Valleys/lwr slopes...49-59 percent
Ridges/upr slopes....48-58 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 west 5 to 7
mph in the afternoon.
* Mixing Height..........6300 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ211-212-221315-
Hoopa-Van Duzen/Mad River-
1222 PM PDT Mon Jul 21 2025
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy fog late in the
night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...50-54
Ridges/upr slopes....46-53
* Max Humidity.......
Valleys/lwr slopes...84-99 percent
Ridges/upr slopes....75-90 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest 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 to 6 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY...
* Sky/Weather............Sunny. Patchy fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...79-87
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...40-50 percent
Ridges/upr slopes....50-60 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........4600 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...50-57
Ridges/upr slopes....49-57
* Max Humidity.......
Valleys/lwr slopes...79-94 percent
Ridges/upr slopes....69-84 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
Ridges/upr slopes....West winds 5 to 7 mph...shifting to the
northeast 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...81-89
Ridges/upr slopes....71-79
* Min Humidity.......
Valleys/lwr slopes...38-48 percent
Ridges/upr slopes....44-54 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....East winds 5 to 6 mph...shifting to the
west in the afternoon.
* Mixing Height..........5900 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ283-221315-
Trinity-
1222 PM PDT Mon Jul 21 2025
.TONIGHT...
* Sky/Weather............Mostly clear. Slight chance of rain early
in the evening.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-57
Ridges/upr slopes....47-54
* Max Humidity.......
Valleys/lwr slopes...71-84 percent
Ridges/upr slopes....66-81 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 9 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
Ridges/upr slopes....Southwest winds 5 to 8 mph...shifting to
the east 5 to 6 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY...
* Sky/Weather............Sunny. Slight chance of rain in the
afternoon.
* Chance Lightning.......0% increasing to 20% in the afternoon.
* Max Temperature.......
Valleys/lwr slopes...80-85
Ridges/upr slopes....66-74
* Min Humidity.......
Valleys/lwr slopes...24-31 percent
Ridges/upr slopes....38-48 percent
* 20-Foot Winds...
Valleys/lwr slopes...East winds 5 to 8 mph.
Ridges/upr slopes....Southeast winds 5 to 8 mph.
* Mixing Height..........7000 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY NIGHT...
* Sky/Weather............Mostly clear. Slight chance of rain
through the night.
* Min Temperature.......
Valleys/lwr slopes...52-57
Ridges/upr slopes....49-56
* Max Humidity.......
Valleys/lwr slopes...63-76 percent
Ridges/upr slopes....55-70 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southeast winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....South winds 5 to 7 mph...shifting to the
east 5 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...84-89
Ridges/upr slopes....70-78
* Min Humidity.......
Valleys/lwr slopes...20-26 percent
Ridges/upr slopes....30-38 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southeast 5 to 7 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 to 8 mph.
* Mixing Height..........8500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ276-221315-
Interior Mendocino-
1222 PM PDT Mon Jul 21 2025
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Slight chance of rain through the night.
Patchy fog late in the night.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...48-54
Ridges/upr slopes....47-54
* Max Humidity.......
Valleys/lwr slopes...84-99 percent
Ridges/upr slopes....79-94 percent
* 20-Foot Winds...
Valleys/lwr slopes...West 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.
.TUESDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
then becoming sunny. Patchy fog early in
the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...71-79
Ridges/upr slopes....66-74
* Min Humidity.......
Valleys/lwr slopes...59-69 percent
Ridges/upr slopes....60-70 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 8 mph.
Ridges/upr slopes....Southwest winds 5 to 8 mph.
* Mixing Height..........3600 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY NIGHT...
* Sky/Weather............Partly cloudy. Patchy fog after midnight.
* Min Temperature.......
Valleys/lwr slopes...49-56
Ridges/upr slopes....49-57
* Max Humidity.......
Valleys/lwr slopes...81-96 percent
Ridges/upr slopes....75-90 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West 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.
.WEDNESDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog in the morning.
* Max Temperature.......
Valleys/lwr slopes...74-82
Ridges/upr slopes....68-76
* Min Humidity.......
Valleys/lwr slopes...52-62 percent
Ridges/upr slopes....55-65 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....Variable 2 to 4 mph...becoming southwest 5
to 6 mph in the afternoon.
* Mixing Height..........4500 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ277-221315-
W Mendocino NF/E Mendocino Unit-
1222 PM PDT Mon Jul 21 2025
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...46-54
Ridges/upr slopes....49-54
* Max Humidity.......
Valleys/lwr slopes...82-97 percent
Ridges/upr slopes....70-85 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 8 mph...shifting to the
northeast 5 to 6 mph after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...77-84
Ridges/upr slopes....67-75
* Min Humidity.......
Valleys/lwr slopes...40-50 percent
Ridges/upr slopes....47-57 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 8 mph.
Ridges/upr slopes....Southwest winds 5 to 8 mph.
* Mixing Height..........5600 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy fog early in the
morning.
* Min Temperature.......
Valleys/lwr slopes...48-56
Ridges/upr slopes....51-57
* Max Humidity.......
Valleys/lwr slopes...78-93 percent
Ridges/upr slopes....64-79 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
northeast after midnight.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Max Temperature.......
Valleys/lwr slopes...80-88
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...34-44 percent
Ridges/upr slopes....37-47 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southwest 5 to 6 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..........6900 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ264-221315-
Lake County Portion of Lake/Napa/Sonoma RU-
1222 PM PDT Mon Jul 21 2025
.TONIGHT...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 50
Ridges/upr slopes....54-57
* Max Humidity.......
Valleys/lwr slopes...92 percent
Ridges/upr slopes....67-82 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 12 mph.
Ridges/upr slopes....Northwest winds 5 to 12 mph.
* Mixing Height..........100 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY...
* Sky/Weather............Partly cloudy then becoming sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...around 76
Ridges/upr slopes....69-73
* Min Humidity.......
Valleys/lwr slopes...43 percent
Ridges/upr slopes....50-60 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....Southwest winds 5 to 7 mph...becoming 5 to
8 mph in the afternoon.
* Mixing Height..........5200 ft AGL.
* Chc of Wetting Rain....0 percent.
.TUESDAY NIGHT...
* Sky/Weather............Mostly clear.
* Min Temperature.......
Valleys/lwr slopes...around 51
Ridges/upr slopes....around 60
* Max Humidity.......
Valleys/lwr slopes...86 percent
Ridges/upr slopes....57-71 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........0 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Partly cloudy then becoming sunny.
* Max Temperature.......
Valleys/lwr slopes...around 78
Ridges/upr slopes....71-75
* Min Humidity.......
Valleys/lwr slopes...37 percent
Ridges/upr slopes....44-54 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
south 5 to 7 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 to 8 mph.
* Mixing Height..........5800 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
.EXTENDED FORECAST FOR DAYS 3 THROUGH 5...
...Northwest California Coast...
.THURSDAY...Mostly cloudy. Patchy fog. Lows in the lower 50s.
Highs 59 to 64. Winds generally less than 5 mph.
.FRIDAY...Mostly cloudy with slight chance of rain. Patchy fog.
Lows in the lower 50s. Highs 59 to 64. Winds generally less than
5 mph.
.SATURDAY...Mostly cloudy with slight chance of rain. Patchy fog.
Lows in the lower to mid 50s. Highs 58 to 64. Northwest winds
5 mph.
...Northwest California Interior...
.THURSDAY...Mostly clear. Patchy fog. Lows 49 to 57. Highs 75 to
87. Southwest winds 5 mph.
.FRIDAY...Mostly clear. Patchy fog in the morning. Lows 50 to 58.
Highs 74 to 86. West winds 5 mph.
.SATURDAY...Mostly clear. Patchy fog in the morning. Lows 49 to
57. Highs 73 to 84. West winds 5 mph.
.6 to 10 DAY OUTLOOK...Sunday July 27 THROUGH Thursday July 31, 2025...
FOR NW CALIF...BELOW NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
$$
visit us at www.weather.gov/eureka