Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
200
FNUS56 KEKA 210718
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE Eureka CA
1218 AM PDT Tue Jul 21 2026
...ADDITIONAL LOW CHANCES FOR DRY THUNDERSTORMS IN THE INTERIOR
THROUGH WEDNESDAY...
.DISCUSSION...Thunderstorms are possible again on Tuesday, but the
chances are low. Wednesday there is a slight chance for
thunderstorms in northern Trinity county again. Hot temperatures
and low afternoon RH are expected again Tuesday with some cooling
expected Wednesday and through the rest of the week. Locally
stronger westerly winds are also possible late in the week.
CAZ401-220115-
Coastal Del Norte-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy. Patchy fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...65-72
Ridges/upr slopes....68-74
* Min Humidity.......
Valleys/lwr slopes...67-82 percent
Ridges/upr slopes....68-78 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 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..........1200 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly cloudy. Patchy fog after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...56-59
Ridges/upr slopes....56-59
* Max Humidity.......
Valleys/lwr slopes...87-97 percent
Ridges/upr slopes....82-92 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 mph in the
evening...becoming light winds 1 to 3 mph.
Ridges/upr slopes....Variable 1 to 3 mph.
* Mixing Height..........500 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...64-70
Ridges/upr slopes....65-72
* Min Humidity.......
Valleys/lwr slopes...71-83 percent
Ridges/upr slopes....71-81 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming
southwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....Southwest winds 5 to 8 mph.
* Mixing Height..........1800 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy fog in the late evening and
overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-56
Ridges/upr slopes....52-55
* Max Humidity.......
Valleys/lwr slopes...94-100 percent
Ridges/upr slopes....93-100 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 mph in the evening...becoming
light winds 1 to 3 mph.
Ridges/upr slopes....West winds 5 mph in the evening...becoming
downslope/downvalley 2 to 4 mph.
* Mixing Height..........800 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ402-220115-
Interior Del Norte Including the Smith River Valley-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...79-87
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...59-69 percent
Ridges/upr slopes....55-65 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 7 mph.
Ridges/upr slopes....Southwest winds 5 to 7 mph.
* Mixing Height..........2100 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...57-65
Ridges/upr slopes....62-70
* Max Humidity.......
Valleys/lwr slopes...64-79 percent
Ridges/upr slopes....54-69 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Northwest winds 5 mph...shifting to the
east after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0% increasing to 10% in the afternoon.
* Max Temperature.......
Valleys/lwr slopes...75-83
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...63-73 percent
Ridges/upr slopes....59-69 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..........2200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Partly cloudy. Slight chance of showers
and thunderstorms through the night.
* Chance Lightning.......10% decreasing to 0% after midnight.
* Min Temperature.......
Valleys/lwr slopes...53-57
Ridges/upr slopes....55-61
* Max Humidity.......
Valleys/lwr slopes...85-100 percent
Ridges/upr slopes....74-89 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 in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ403-220115-
Northeastern Interior Humboldt and Southwestern Siskiyou
Including Orleans-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...94-102
Ridges/upr slopes....78-86
* Min Humidity.......
Valleys/lwr slopes...22-30 percent
Ridges/upr slopes....31-39 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming
southwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 mph...shifting to the
southwest 5 to 6 mph in the afternoon.
* Mixing Height..........5300 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...61-68
Ridges/upr slopes....66-71
* Max Humidity.......
Valleys/lwr slopes...58-73 percent
Ridges/upr slopes....43-53 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....West winds 5 mph...shifting to the
northeast after midnight.
* Mixing Height..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny. Slight chance of thunderstorms in
the afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...92-100
Ridges/upr slopes....77-85
* Min Humidity.......
Valleys/lwr slopes...28-36 percent
Ridges/upr slopes....35-45 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph...becoming
southwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 5 mph...becoming southwest 5
to 8 mph in the afternoon.
* Mixing Height..........7600 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Mostly clear. Slight chance of showers and
thunderstorms.
* Chance Lightning.......10%.
* Min Temperature.......
Valleys/lwr slopes...55-61
Ridges/upr slopes....around 60
* Max Humidity.......
Valleys/lwr slopes...75-90 percent
Ridges/upr slopes....61-73 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 6 to 9 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ404-220115-
Northern Coastal Humboldt-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy. Patchy fog early in the
morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...67-75
Ridges/upr slopes....around 70
* Min Humidity.......
Valleys/lwr slopes...66-81 percent
Ridges/upr slopes....68 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph.
Ridges/upr slopes....Northwest winds 5 to 7 mph.
* Mixing Height..........1300 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...around 60
Ridges/upr slopes....around 58
* Max Humidity.......
Valleys/lwr slopes...80-93 percent
Ridges/upr slopes....76 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 1 to 3 mph.
* Mixing Height..........500 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
then becoming sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...67-73
Ridges/upr slopes....around 70
* Min Humidity.......
Valleys/lwr slopes...64-79 percent
Ridges/upr slopes....66 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 1 to 3 mph.
* Mixing Height..........2100 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy fog in the late evening and
overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...55-58
Ridges/upr slopes....around 55
* Max Humidity.......
Valleys/lwr slopes...94-100 percent
Ridges/upr slopes....90 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph in the
evening...becoming light winds 2 to 4 mph.
Ridges/upr slopes....Variable 1 to 3 mph.
* Mixing Height..........700 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ405-220115-
Northwestern Interior Humboldt Including the Bald Hills-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...80-88
Ridges/upr slopes....77-85
* Min Humidity.......
Valleys/lwr slopes...56-66 percent
Ridges/upr slopes....51-61 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming west 5
to 6 mph in the afternoon.
Ridges/upr slopes....Southwest winds 5 to 7 mph.
* Mixing Height..........2000 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...57-65
Ridges/upr slopes....61-69
* Max Humidity.......
Valleys/lwr slopes...67-82 percent
Ridges/upr slopes....58-73 percent
* 20-Foot Winds...
Valleys/lwr slopes...North winds 5 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Variable 1 to 3 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...76-84
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...60-70 percent
Ridges/upr slopes....57-67 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..........2100 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Partly cloudy. Patchy fog early in the
morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-59
Ridges/upr slopes....54-62
* Max Humidity.......
Valleys/lwr slopes...82-97 percent
Ridges/upr slopes....77-92 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 1 to 3 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ406-220115-
Eastern Interior Humboldt Including Willow Creek and Hoopa-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...93-101
Ridges/upr slopes....77-85
* Min Humidity.......
Valleys/lwr slopes...26-34 percent
Ridges/upr slopes....31-39 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming west 5
to 6 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 to 6 mph...shifting to
the southwest in the afternoon.
* Mixing Height..........3500 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...61-66
Ridges/upr slopes....66-73
* Max Humidity.......
Valleys/lwr slopes...57-72 percent
Ridges/upr slopes....43-52 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..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny. Slight chance of thunderstorms in
the afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...90-98
Ridges/upr slopes....76-84
* Min Humidity.......
Valleys/lwr slopes...34-44 percent
Ridges/upr slopes....38-48 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....Southeast winds 5 mph...shifting to the
southwest 5 to 7 mph in the afternoon.
* Mixing Height..........4200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Mostly clear. Slight chance of showers and
thunderstorms through the night.
* Chance Lightning.......10%.
* Min Temperature.......
Valleys/lwr slopes...56-59
Ridges/upr slopes....58-62
* Max Humidity.......
Valleys/lwr slopes...78-93 percent
Ridges/upr slopes....65-77 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 1
to 3 mph.
Ridges/upr slopes....West winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ407-220115-
Southwestern Humboldt Including the King Range and the Eel River
Valley-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...86-94
Ridges/upr slopes....80-88
* Min Humidity.......
Valleys/lwr slopes...39-47 percent
Ridges/upr slopes....48-58 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming west 5
to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 mph
in the afternoon.
* Mixing Height..........2700 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...59-65
Ridges/upr slopes....65-73
* Max Humidity.......
Valleys/lwr slopes...59-74 percent
Ridges/upr slopes....50-60 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 1 to 3 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...77-85
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...45-55 percent
Ridges/upr slopes....54-64 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....Variable 2 to 5 mph...becoming south 5 to
8 mph in the afternoon.
* Mixing Height..........2200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...55-60
Ridges/upr slopes....59-66
* Max Humidity.......
Valleys/lwr slopes...83-98 percent
Ridges/upr slopes....74-89 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....West winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ408-220115-
Southeastern Interior Humboldt Including Kneeland and Alderpoint-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...84-92
Ridges/upr slopes....77-85
* Min Humidity.......
Valleys/lwr slopes...48-58 percent
Ridges/upr slopes....55-65 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming west 5
to 6 mph in the afternoon.
Ridges/upr slopes....South winds 5 mph...shifting to the
southwest 5 to 6 mph in the afternoon.
* Mixing Height..........3100 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...60-68
Ridges/upr slopes....63-71
* Max Humidity.......
Valleys/lwr slopes...57-72 percent
Ridges/upr slopes....53-63 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....North winds 5 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...78-86
Ridges/upr slopes....74-82
* Min Humidity.......
Valleys/lwr slopes...49-59 percent
Ridges/upr slopes....54-64 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....Southeast winds 5 mph...shifting to the
southwest 5 to 6 mph in the afternoon.
* Mixing Height..........3200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy fog after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-60
Ridges/upr slopes....54-62
* Max Humidity.......
Valleys/lwr slopes...80-95 percent
Ridges/upr slopes....75-90 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 in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ409-220115-
Northwestern Trinity Including Salyer and Big Bar-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
then becoming mostly cloudy. Slight chance
of showers and thunderstorms late in the
afternoon.
* Chance Lightning.......0% increasing to 10% in the afternoon.
* Max Temperature.......
Valleys/lwr slopes...92-100
Ridges/upr slopes....76-84
* Min Humidity.......
Valleys/lwr slopes...22-30 percent
Ridges/upr slopes....29-37 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming
southwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 to 6 mph...shifting to
the southwest in the afternoon.
* Mixing Height..........5100 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear. Slight chance of showers and
thunderstorms in the evening.
* Chance Lightning.......10% decreasing to 0% after midnight.
* Min Temperature.......
Valleys/lwr slopes...62-66
Ridges/upr slopes....63-69
* Max Humidity.......
Valleys/lwr slopes...54-69 percent
Ridges/upr slopes....44-54 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....Northwest winds 5 mph...shifting to the
east after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny then becoming partly cloudy. Slight
chance of showers and thunderstorms in the
late morning and afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...91-99
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...27-35 percent
Ridges/upr slopes....37-47 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
south 5 to 6 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 to 12 mph.
* Mixing Height..........6800 ft AGL.
* Chc of Wetting Rain....10 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly clear.
Slight chance of showers and thunderstorms
through the night.
* Chance Lightning.......10%.
* Min Temperature.......
Valleys/lwr slopes...56-60
Ridges/upr slopes....56-62
* Max Humidity.......
Valleys/lwr slopes...76-91 percent
Ridges/upr slopes....60-71 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....Southwest winds 6 to 10 mph...shifting to
the east 5 mph after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ410-220115-
Northeastern Trinity Including Trinity Lake-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Partly cloudy. Slight chance of showers
and thunderstorms late in the afternoon.
* Chance Lightning.......0% increasing to 10% in the afternoon.
* Max Temperature.......
Valleys/lwr slopes...87-95
Ridges/upr slopes....75-83
* Min Humidity.......
Valleys/lwr slopes...23-31 percent
Ridges/upr slopes....31-39 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
south 5 to 6 mph in the afternoon.
Ridges/upr slopes....South winds 5 to 7 mph.
* Mixing Height..........6800 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear. Slight chance of showers and
thunderstorms in the evening.
* Chance Lightning.......10% decreasing to 0% after midnight.
* Min Temperature.......
Valleys/lwr slopes...62-68
Ridges/upr slopes....59-67
* Max Humidity.......
Valleys/lwr slopes...57-72 percent
Ridges/upr slopes....51-61 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 mph in the
evening...becoming downslope/downvalley 1
to 3 mph.
Ridges/upr slopes....West winds 5 mph...shifting to the east
after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny then becoming partly cloudy. Slight
chance of showers and thunderstorms in the
late morning and afternoon.
* Chance Lightning.......10% increasing to 20% in the afternoon.
* Max Temperature.......
Valleys/lwr slopes...86-94
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...27-35 percent
Ridges/upr slopes....38-48 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
southeast 5 to 9 mph in the afternoon.
Ridges/upr slopes....Southeast winds 6 to 13 mph.
* Mixing Height..........6300 ft AGL.
* Chc of Wetting Rain....10 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming clear. Slight
chance of showers and thunderstorms in the
evening.
* Chance Lightning.......10%.
* Min Temperature.......
Valleys/lwr slopes...59-64
Ridges/upr slopes....54-62
* Max Humidity.......
Valleys/lwr slopes...66-81 percent
Ridges/upr slopes....55-70 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 9 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Southeast winds 5 to 12 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....10 percent.
$$
CAZ411-220115-
Eastern Trinity Including Weaverville and Hayfork-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
* Chance Lightning.......0% increasing to 10% in the afternoon.
* Max Temperature.......
Valleys/lwr slopes...91-98
Ridges/upr slopes....79-87
* Min Humidity.......
Valleys/lwr slopes...22-30 percent
Ridges/upr slopes....26-34 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....Southeast winds 5 mph...shifting to the
southwest 5 to 7 mph in the afternoon.
* Mixing Height..........7300 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear. Slight chance of showers and
thunderstorms in the evening.
* Chance Lightning.......10% decreasing to 0% after midnight.
* Min Temperature.......
Valleys/lwr slopes...59-67
Ridges/upr slopes....64-68
* Max Humidity.......
Valleys/lwr slopes...58-72 percent
Ridges/upr slopes....49-59 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 mph in the
evening...becoming downslope/downvalley 1
to 3 mph.
Ridges/upr slopes....West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny. Slight chance of showers and
thunderstorms in the late morning and
afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...89-96
Ridges/upr slopes....78-86
* Min Humidity.......
Valleys/lwr slopes...26-34 percent
Ridges/upr slopes....34-44 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
southeast 5 to 8 mph in the afternoon.
Ridges/upr slopes....Southeast winds 5 to 11 mph.
* Mixing Height..........7300 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Mostly clear. Slight chance of showers and
thunderstorms through the night.
* Chance Lightning.......10%.
* Min Temperature.......
Valleys/lwr slopes...54-62
Ridges/upr slopes....57-62
* Max Humidity.......
Valleys/lwr slopes...73-88 percent
Ridges/upr slopes....66-81 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Southwest winds 5 to 11 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ412-220115-
Southern Trinity Including Ruth Lake and the Yolla Bollys-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...88-96
Ridges/upr slopes....79-87
* Min Humidity.......
Valleys/lwr slopes...26-32 percent
Ridges/upr slopes....29-37 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southeast winds 5 mph...shifting to the
southwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....South winds 5 to 8 mph.
* Mixing Height..........5000 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...60-66
Ridges/upr slopes....58-66
* Max Humidity.......
Valleys/lwr slopes...53-68 percent
Ridges/upr slopes....53-68 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....Southwest winds 5 to 6 mph...shifting to
the east 5 mph after midnight.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny. Slight chance of showers and
thunderstorms in the late morning and
afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...85-93
Ridges/upr slopes....77-85
* Min Humidity.......
Valleys/lwr slopes...34-43 percent
Ridges/upr slopes....36-46 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....Southeast winds 5 to 6 mph...shifting to
the south 5 to 8 mph in the afternoon.
* Mixing Height..........6400 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Mostly clear. Slight chance of showers and
thunderstorms through the night. Patchy
fog after midnight.
* Chance Lightning.......10%.
* Min Temperature.......
Valleys/lwr slopes...53-57
Ridges/upr slopes....51-59
* Max Humidity.......
Valleys/lwr slopes...84-99 percent
Ridges/upr slopes....80-95 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....Southwest winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ413-220115-
Coastal Mendocino-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...75-83
Ridges/upr slopes....76-84
* Min Humidity.......
Valleys/lwr slopes...58-68 percent
Ridges/upr slopes....45-55 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 6
mph in the afternoon.
* Mixing Height..........1200 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...57-61
Ridges/upr slopes....56-64
* Max Humidity.......
Valleys/lwr slopes...69-84 percent
Ridges/upr slopes....65-80 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 mph in the evening...becoming
downslope/downvalley 2 to 4 mph.
Ridges/upr slopes....West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...70-78
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...65-80 percent
Ridges/upr slopes....58-71 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 11 mph.
Ridges/upr slopes....South winds 5 to 11 mph.
* Mixing Height..........1700 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Mostly cloudy. Patchy fog in the late
evening and overnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...54-58
Ridges/upr slopes....53-61
* Max Humidity.......
Valleys/lwr slopes...90-100 percent
Ridges/upr slopes....83-98 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph in the
evening...becoming light winds 2 to 4 mph.
Ridges/upr slopes....Southwest winds 5 to 6 mph in the
evening...becoming light winds 2 to 4 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ414-220115-
Northern Interior Mendocino Including Leggett and Willits-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...91-99
Ridges/upr slopes....84-92
* Min Humidity.......
Valleys/lwr slopes...23-31 percent
Ridges/upr slopes....27-35 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 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..........3200 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...56-64
Ridges/upr slopes....60-68
* Max Humidity.......
Valleys/lwr slopes...58-73 percent
Ridges/upr slopes....55-65 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 mph in the evening...becoming
downslope/downvalley 2 to 4 mph.
Ridges/upr slopes....Variable 1 to 3 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....77-85
* Min Humidity.......
Valleys/lwr slopes...39-49 percent
Ridges/upr slopes....48-58 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
south 5 to 8 mph in the afternoon.
Ridges/upr slopes....South winds 5 to 8 mph.
* Mixing Height..........4800 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Partly cloudy. Patchy fog after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-58
Ridges/upr slopes....53-61
* Max Humidity.......
Valleys/lwr slopes...85-100 percent
Ridges/upr slopes....78-93 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....Southwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ415-220115-
Northeastern Interior Mendocino Including Covelo-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...90-98
Ridges/upr slopes....79-87
* Min Humidity.......
Valleys/lwr slopes...27-35 percent
Ridges/upr slopes....31-39 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming
southwest 5 to 6 mph in the afternoon.
Ridges/upr slopes....South winds 5 to 7 mph.
* Mixing Height..........5100 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...59-67
Ridges/upr slopes....62-69
* Max Humidity.......
Valleys/lwr slopes...58-73 percent
Ridges/upr slopes....47-57 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....West winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny. Slight chance of thunderstorms in
the afternoon.
* Chance Lightning.......10%.
* Max Temperature.......
Valleys/lwr slopes...87-95
Ridges/upr slopes....76-84
* Min Humidity.......
Valleys/lwr slopes...31-41 percent
Ridges/upr slopes....39-49 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
south 5 to 9 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 5 mph...becoming south 6 to
10 mph in the afternoon.
* Mixing Height..........6800 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy fog early in the
morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-60
Ridges/upr slopes....54-60
* Max Humidity.......
Valleys/lwr slopes...81-96 percent
Ridges/upr slopes....74-89 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....Southwest winds 5 to 9 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ416-220115-
Southeastern Interior Mendocino Including Ukiah and Potter Valley-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...92-100
Ridges/upr slopes....85-93
* Min Humidity.......
Valleys/lwr slopes...23-30 percent
Ridges/upr slopes....25-32 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 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..........4700 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...61-69
Ridges/upr slopes....65-73
* Max Humidity.......
Valleys/lwr slopes...55-70 percent
Ridges/upr slopes....51-61 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 in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...85-93
Ridges/upr slopes....77-85
* Min Humidity.......
Valleys/lwr slopes...41-51 percent
Ridges/upr slopes....51-61 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
south 6 to 9 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 5 mph...becoming south 6 to
9 mph in the afternoon.
* Mixing Height..........5800 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Clear then becoming partly cloudy. Patchy
fog early in the morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...54-62
Ridges/upr slopes....58-65
* Max Humidity.......
Valleys/lwr slopes...82-97 percent
Ridges/upr slopes....72-87 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....Southwest winds 5 to 9 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ417-220115-
Southwestern Interior Mendocino Including Boonville-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...88-96
Ridges/upr slopes....85-93
* Min Humidity.......
Valleys/lwr slopes...30-38 percent
Ridges/upr slopes....32-40 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 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..........2400 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...61-69
Ridges/upr slopes....63-71
* Max Humidity.......
Valleys/lwr slopes...57-72 percent
Ridges/upr slopes....55-70 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 in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...79-86
Ridges/upr slopes....76-83
* Min Humidity.......
Valleys/lwr slopes...48-58 percent
Ridges/upr slopes....51-61 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 8 mph.
Ridges/upr slopes....South winds 5 to 8 mph.
* Mixing Height..........3000 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy fog after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...56-64
Ridges/upr slopes....56-64
* Max Humidity.......
Valleys/lwr slopes...83-98 percent
Ridges/upr slopes....81-96 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 in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ418-220115-
Northern Lake Including Gravelly Valley-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...96-100
Ridges/upr slopes....80-88
* Min Humidity.......
Valleys/lwr slopes...23-28 percent
Ridges/upr slopes....29-37 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
southwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....South winds 5 mph...shifting to the
southwest 5 to 7 mph in the afternoon.
* Mixing Height..........5900 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...60-68
Ridges/upr slopes....65-73
* Max Humidity.......
Valleys/lwr slopes...54-69 percent
Ridges/upr slopes....43-53 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...91-97
Ridges/upr slopes....77-85
* Min Humidity.......
Valleys/lwr slopes...30-38 percent
Ridges/upr slopes....38-48 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 9 mph.
Ridges/upr slopes....South winds 5 to 9 mph.
* Mixing Height..........5900 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-60
Ridges/upr slopes....55-63
* Max Humidity.......
Valleys/lwr slopes...74-89 percent
Ridges/upr slopes....69-84 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 9 mph.
Ridges/upr slopes....West winds 5 to 9 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ419-220115-
Eastern Lake Including Clearlake and Middletown-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...95-98
Ridges/upr slopes....88-93
* Min Humidity.......
Valleys/lwr slopes...24-29 percent
Ridges/upr slopes....25-33 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
southwest 5 to 9 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming southwest 5
to 7 mph in the afternoon.
* Mixing Height..........5700 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...60-68
Ridges/upr slopes....67-75
* Max Humidity.......
Valleys/lwr slopes...53-63 percent
Ridges/upr slopes....45-54 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph.
Ridges/upr slopes....West winds 5 to 9 mph.
* Mixing Height..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...86-93
Ridges/upr slopes....83-88
* Min Humidity.......
Valleys/lwr slopes...35-45 percent
Ridges/upr slopes....35-45 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 8 mph.
Ridges/upr slopes....South winds 5 to 9 mph.
* Mixing Height..........5100 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...54-61
Ridges/upr slopes....58-64
* Max Humidity.......
Valleys/lwr slopes...80-95 percent
Ridges/upr slopes....74-84 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 10 mph.
Ridges/upr slopes....Southwest winds 5 to 10 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ420-220115-
Southern Lake Including Cobb and Konocti-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...93-97
Ridges/upr slopes....84-92
* Min Humidity.......
Valleys/lwr slopes...26-31 percent
Ridges/upr slopes....26-32 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 5 mph...becoming
southwest 5 to 10 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming southwest 5
to 8 mph in the afternoon.
* Mixing Height..........4000 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...61-69
Ridges/upr slopes....69-73
* Max Humidity.......
Valleys/lwr slopes...53-63 percent
Ridges/upr slopes....49-59 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 10 mph.
Ridges/upr slopes....Southwest winds 5 to 10 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...85-88
Ridges/upr slopes....76-83
* Min Humidity.......
Valleys/lwr slopes...42-52 percent
Ridges/upr slopes....48-58 percent
* 20-Foot Winds...
Valleys/lwr slopes...South winds 5 to 9 mph.
Ridges/upr slopes....South winds 5 to 9 mph.
* Mixing Height..........3500 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...55-63
Ridges/upr slopes....62-65
* Max Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....75-85 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph.
Ridges/upr slopes....Southwest winds 5 to 9 mph.
* Mixing Height..........200 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ421-220115-
Western Lake Including Lakeport-
1218 AM PDT Tue Jul 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...90-97
Ridges/upr slopes....86-91
* Min Humidity.......
Valleys/lwr slopes...26-34 percent
Ridges/upr slopes....24-29 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..........5600 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...61-67
Ridges/upr slopes....68-76
* Max Humidity.......
Valleys/lwr slopes...55-70 percent
Ridges/upr slopes....45-55 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 7 mph.
* Mixing Height..........500 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...84-91
Ridges/upr slopes....79-84
* Min Humidity.......
Valleys/lwr slopes...42-52 percent
Ridges/upr slopes....43-53 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
south 5 to 8 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 5 mph...becoming south 6 to
9 mph in the afternoon.
* Mixing Height..........5400 ft AGL.
* Chc of Wetting Rain....0 percent.
.WEDNESDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...54-59
Ridges/upr slopes....58-66
* Max Humidity.......
Valleys/lwr slopes...83-98 percent
Ridges/upr slopes....68-83 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
.EXTENDED FORECAST FOR DAYS 3 THROUGH 5...
...Northwest California Coast...
.THURSDAY...Mostly cloudy. Patchy fog in the morning. Patchy fog.
Lows 51 to 56. Highs 62 to 69. Winds generally less than 5 mph.
.FRIDAY...Mostly cloudy. Patchy fog in the morning. Patchy fog
after midnight. Lows in the lower to mid 50s. Highs 62 to 69.
Northwest winds 5 mph.
.SATURDAY...Partly cloudy. Patchy fog in the morning. Patchy fog
after midnight. Lows 50 to 55. Highs 61 to 68. Northwest winds
5 mph.
...Northwest California Interior...
.THURSDAY...Mostly clear. Patchy fog in the morning. Lows 52 to
60. Highs 79 to 92. West winds 5 mph.
.FRIDAY...Mostly clear. Lows 52 to 60. Highs 83 to 96. West winds
5 mph.
.SATURDAY...Mostly clear. Lows 53 to 61. Highs 82 to 95.
Northwest winds 5 mph.
.6 to 10 DAY OUTLOOK...Sunday July 26 THROUGH Thursday July 30, 2026...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
$$
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