Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
249
FNUS56 KEKA 210744
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE Eureka CA
1244 AM PDT Fri Aug 21 2026
...SLIGHT CHANCE OF ISOLATED DRY THUNDERSTORMS FRIDAY MORNING AND
AFTERNOON FOCUSED IN TRINITY COUNTY...
.DISCUSSION...Marine influence has just started to increase across
the area and will continue to increase through the end of the
week. High clouds Friday will aid in the warmest interior
temperatures pulling back closer to 90 with RH closer to 25
percent. Mid and upper slope recoveries will also improve though
remain poor on higher peaks. Winds will remain gentle and from the
west. Tropical moisture moving overhead Friday will bring a very
slight (5%) chance of isolated, dry thunderstorms Friday morning
and through the afternoon, but simple high level clouds and virga
are the most likely outcome. Warmer, near average conditions will
return Sunday and into early next week.
CAZ401-220115-
Coastal Del Norte-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy. Areas of fog early in the
morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...61-65
Ridges/upr slopes....60-66
* Min Humidity.......
Valleys/lwr slopes...76-90 percent
Ridges/upr slopes....76-86 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming
southwest 5 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming southwest 5
to 6 mph in the afternoon.
* Mixing Height..........1800 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly cloudy. Patchy fog after midnight.
Areas of fog early in the morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...50-53
Ridges/upr slopes....47-51
* Max Humidity.......
Valleys/lwr slopes...94-100 percent
Ridges/upr slopes....93-100 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 mph in the
evening...becoming light winds 1 to 3 mph.
Ridges/upr slopes....Southwest winds 5 mph in the
evening...becoming light winds 1 to 3 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...61-65
Ridges/upr slopes....60-67
* Min Humidity.......
Valleys/lwr slopes...77-90 percent
Ridges/upr slopes....77-87 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 1 to 3 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..........2200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-52
Ridges/upr slopes....47-52
* Max Humidity.......
Valleys/lwr slopes...94-100 percent
Ridges/upr slopes....93-100 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 mph in the
evening...becoming downslope/downvalley 1
to 3 mph.
Ridges/upr slopes....Northwest winds 5 to 6 mph...shifting to
the northeast 5 mph after midnight.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ402-220115-
Interior Del Norte Including the Smith River Valley-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...67-75
Ridges/upr slopes....64-72
* Min Humidity.......
Valleys/lwr slopes...70-85 percent
Ridges/upr slopes....70-85 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph.
Ridges/upr slopes....Southwest winds 5 to 9 mph.
* Mixing Height..........2000 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy fog after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...46-51
Ridges/upr slopes....49-53
* Max Humidity.......
Valleys/lwr slopes...87-100 percent
Ridges/upr slopes....70-85 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....Southwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...66-74
Ridges/upr slopes....62-70
* Min Humidity.......
Valleys/lwr slopes...68-83 percent
Ridges/upr slopes....68-83 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..........3100 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...46-51
Ridges/upr slopes....49-53
* Max Humidity.......
Valleys/lwr slopes...86-100 percent
Ridges/upr slopes....71-86 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
northeast 5 mph after midnight.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ403-220115-
Northeastern Interior Humboldt and Southwestern Siskiyou
Including Orleans-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....71-79
* Min Humidity.......
Valleys/lwr slopes...28-36 percent
Ridges/upr slopes....36-46 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 10 mph.
Ridges/upr slopes....Southwest winds 5 to 10 mph.
* Mixing Height..........4000 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-56
Ridges/upr slopes....51-54
* Max Humidity.......
Valleys/lwr slopes...74-89 percent
Ridges/upr slopes....54-69 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph.
Ridges/upr slopes....Southwest winds 5 to 9 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...81-89
Ridges/upr slopes....67-75
* Min Humidity.......
Valleys/lwr slopes...27-35 percent
Ridges/upr slopes....36-46 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....Southwest winds 5 to 9 mph.
* Mixing Height..........5700 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-55
Ridges/upr slopes....51-54
* Max Humidity.......
Valleys/lwr slopes...67-82 percent
Ridges/upr slopes....55-65 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 mph after midnight.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ404-220115-
Northern Coastal Humboldt-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy. Areas of fog early in the
morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...61-67
Ridges/upr slopes....around 60
* Min Humidity.......
Valleys/lwr slopes...74-89 percent
Ridges/upr slopes....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..........1900 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly cloudy. Patchy fog early in the
morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-54
Ridges/upr slopes....around 51
* Max Humidity.......
Valleys/lwr slopes...93-100 percent
Ridges/upr slopes....95 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph in the
evening...becoming light winds 1 to 3 mph.
Ridges/upr slopes....Northwest winds 5 mph in the
evening...becoming light winds 1 to 3 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* 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...62-66
Ridges/upr slopes....around 61
* Min Humidity.......
Valleys/lwr slopes...72-87 percent
Ridges/upr slopes....80 percent
* 20-Foot Winds...
Valleys/lwr slopes...Light winds 2 to 4 mph...becoming
northwest 5 to 8 mph in the afternoon.
Ridges/upr slopes....Variable 1 to 3 mph...becoming north 5 to
6 mph in the afternoon.
* Mixing Height..........2200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-54
Ridges/upr slopes....around 52
* Max Humidity.......
Valleys/lwr slopes...94-100 percent
Ridges/upr slopes....95 percent
* 20-Foot Winds...
Valleys/lwr slopes...North winds 5 to 8 mph.
Ridges/upr slopes....North winds 5 to 8 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ405-220115-
Northwestern Interior Humboldt Including the Bald Hills-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* 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....63-71
* Min Humidity.......
Valleys/lwr slopes...69-84 percent
Ridges/upr slopes....65-80 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.
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy
then becoming partly cloudy. Patchy fog
after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...48-52
Ridges/upr slopes....48-54
* Max Humidity.......
Valleys/lwr slopes...84-99 percent
Ridges/upr slopes....71-86 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 6 mph in the
evening...becoming light winds 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..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy
then becoming sunny. Patchy fog in the
morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...66-74
Ridges/upr slopes....63-70
* Min Humidity.......
Valleys/lwr slopes...67-82 percent
Ridges/upr slopes....63-78 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 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..........2700 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy fog early in the
morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-53
Ridges/upr slopes....49-53
* Max Humidity.......
Valleys/lwr slopes...84-99 percent
Ridges/upr slopes....71-86 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....Northwest winds 5 to 6 mph...shifting to
the northeast 5 mph after midnight.
* Mixing Height..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ406-220115-
Eastern Interior Humboldt Including Willow Creek and Hoopa-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy smoke early in the morning. Patchy
smoke late in the afternoon.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...81-89
Ridges/upr slopes....68-76
* Min Humidity.......
Valleys/lwr slopes...39-49 percent
Ridges/upr slopes....45-55 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....South winds 5 to 7 mph...shifting to the
southwest 5 to 10 mph in the afternoon.
* Mixing Height..........3100 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear. Patchy smoke in the evening.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-54
Ridges/upr slopes....51-54
* Max Humidity.......
Valleys/lwr slopes...78-93 percent
Ridges/upr slopes....55-70 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....Southwest winds 5 to 10 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
* Mixing Height..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny. Patchy smoke late in the afternoon.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...78-86
Ridges/upr slopes....65-73
* Min Humidity.......
Valleys/lwr slopes...38-48 percent
Ridges/upr slopes....42-52 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph...becoming
northwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming west 5 to 7
mph in the afternoon.
* Mixing Height..........4300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy smoke early in the
evening.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-54
Ridges/upr slopes....51-54
* Max Humidity.......
Valleys/lwr slopes...73-88 percent
Ridges/upr slopes....54-69 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 north 5 to 6 mph after midnight.
* Mixing Height..........300 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ407-220115-
Southwestern Humboldt Including the King Range and the Eel River
Valley-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* 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...72-80
Ridges/upr slopes....63-71
* Min Humidity.......
Valleys/lwr slopes...55-65 percent
Ridges/upr slopes....64-79 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........2300 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy fog early in the
morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...50-53
Ridges/upr slopes....50-54
* 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 4 mph.
Ridges/upr slopes....Northwest winds 5 to 6 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...73-81
Ridges/upr slopes....65-73
* Min Humidity.......
Valleys/lwr slopes...54-64 percent
Ridges/upr slopes....65-75 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....North winds 5 to 8 mph.
* Mixing Height..........3000 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...50-54
Ridges/upr slopes....53-57
* Max Humidity.......
Valleys/lwr slopes...83-98 percent
Ridges/upr slopes....73-88 percent
* 20-Foot Winds...
Valleys/lwr slopes...North winds 5 to 11 mph.
Ridges/upr slopes....North winds 5 to 12 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ408-220115-
Southeastern Interior Humboldt Including Kneeland and Alderpoint-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming sunny. Patchy
fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...72-80
Ridges/upr slopes....65-73
* Min Humidity.......
Valleys/lwr slopes...64-74 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..........2800 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy. Patchy fog after midnight.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-54
Ridges/upr slopes....47-54
* Max Humidity.......
Valleys/lwr slopes...88-100 percent
Ridges/upr slopes....71-86 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....West winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Partly cloudy then becoming sunny. Patchy
fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...70-78
Ridges/upr slopes....63-71
* Min Humidity.......
Valleys/lwr slopes...64-74 percent
Ridges/upr slopes....72-82 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 2 to 4 mph...becoming
northwest 5 to 7 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 4 mph...becoming northwest 5
to 7 mph in the afternoon.
* Mixing Height..........3900 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-54
Ridges/upr slopes....47-54
* Max Humidity.......
Valleys/lwr slopes...85-100 percent
Ridges/upr slopes....71-86 percent
* 20-Foot Winds...
Valleys/lwr slopes...North winds 5 to 8 mph.
Ridges/upr slopes....North winds 5 to 8 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ409-220115-
Northwestern Trinity Including Salyer and Big Bar-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...84-92
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...26-34 percent
Ridges/upr slopes....27-35 percent
* 20-Foot Winds...
Valleys/lwr slopes...East winds 5 to 8 mph...shifting to the
west 5 to 10 mph in the afternoon.
Ridges/upr slopes....South winds 5 to 11 mph.
* Mixing Height..........6800 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-55
Ridges/upr slopes....52-56
* Max Humidity.......
Valleys/lwr slopes...72-87 percent
Ridges/upr slopes....51-61 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 10 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
Ridges/upr slopes....West winds 5 to 9 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...81-88
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...27-35 percent
Ridges/upr slopes....26-34 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph...becoming
west 5 to 7 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 5 mph...becoming west 5 to 9
mph in the afternoon.
* Mixing Height..........7100 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...50-54
Ridges/upr slopes....52-56
* Max Humidity.......
Valleys/lwr slopes...65-80 percent
Ridges/upr slopes....47-57 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph...shifting to
the north 5 to 7 mph after midnight.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ410-220115-
Northeastern Trinity Including Trinity Lake-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...82-90
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...20-27 percent
Ridges/upr slopes....27-35 percent
* 20-Foot Winds...
Valleys/lwr slopes...East winds 5 to 7 mph...shifting to the
southeast 5 to 9 mph in the afternoon.
Ridges/upr slopes....Southeast winds 6 to 13 mph.
* Mixing Height..........5200 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...55-58
Ridges/upr slopes....49-56
* Max Humidity.......
Valleys/lwr slopes...55-69 percent
Ridges/upr slopes....48-58 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....South winds 5 to 12 mph in the
evening...becoming downslope/downvalley 3
to 6 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...82-90
Ridges/upr slopes....69-77
* Min Humidity.......
Valleys/lwr slopes...16-22 percent
Ridges/upr slopes....20-28 percent
* 20-Foot Winds...
Valleys/lwr slopes...Upslope/upvalley 1 to 3 mph...becoming
south 5 to 6 mph in the afternoon.
Ridges/upr slopes....Variable 2 to 5 mph...becoming southwest 5
to 8 mph in the afternoon.
* Mixing Height..........8500 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...55-58
Ridges/upr slopes....48-56
* Max Humidity.......
Valleys/lwr slopes...52-62 percent
Ridges/upr slopes....44-54 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 6 mph...shifting to
the northwest 5 mph after midnight.
Ridges/upr slopes....West winds 5 to 7 mph...shifting to the
north 5 to 6 mph after midnight.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ411-220115-
Eastern Trinity Including Weaverville and Hayfork-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...85-92
Ridges/upr slopes....74-82
* Min Humidity.......
Valleys/lwr slopes...20-26 percent
Ridges/upr slopes....26-34 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southeast winds 5 to 8 mph.
Ridges/upr slopes....Southeast winds 5 to 9 mph.
* Mixing Height..........6700 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-57
Ridges/upr slopes....50-56
* Max Humidity.......
Valleys/lwr slopes...62-77 percent
Ridges/upr slopes....53-67 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.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...85-91
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...17-24 percent
Ridges/upr slopes....21-29 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....West winds 5 to 7 mph.
* Mixing Height..........8700 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-57
Ridges/upr slopes....51-56
* Max Humidity.......
Valleys/lwr slopes...56-71 percent
Ridges/upr slopes....53-63 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ412-220115-
Southern Trinity Including Ruth Lake and the Yolla Bollys-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Cloudy then becoming partly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...80-88
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...33-41 percent
Ridges/upr slopes....32-40 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 9 mph.
Ridges/upr slopes....Southeast winds 5 to 8 mph...shifting to
the southwest 6 to 10 mph in the
afternoon.
* Mixing Height..........4900 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-52
Ridges/upr slopes....47-55
* Max Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....66-81 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....Southwest winds 5 to 8 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...78-86
Ridges/upr slopes....70-78
* Min Humidity.......
Valleys/lwr slopes...32-40 percent
Ridges/upr slopes....29-37 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....Variable 2 to 4 mph...becoming west 5 to 7
mph in the afternoon.
* Mixing Height..........6400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...50-54
Ridges/upr slopes....48-56
* Max Humidity.......
Valleys/lwr slopes...72-87 percent
Ridges/upr slopes....63-78 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 7 mph...shifting to
the north 5 mph after midnight.
Ridges/upr slopes....Northwest winds 5 to 7 mph...shifting to
the north 5 mph after midnight.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ413-220115-
Coastal Mendocino-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Areas of fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...60-68
Ridges/upr slopes....61-69
* Min Humidity.......
Valleys/lwr slopes...79-94 percent
Ridges/upr slopes....73-88 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 10 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........1700 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
Patchy fog after midnight. Areas of fog
early in the morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...48-52
Ridges/upr slopes....47-53
* Max Humidity.......
Valleys/lwr slopes...92-100 percent
Ridges/upr slopes....85-100 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph in the
evening...becoming light winds 2 to 5 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Mostly cloudy then becoming sunny. Patchy
fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...62-70
Ridges/upr slopes....64-72
* Min Humidity.......
Valleys/lwr slopes...73-88 percent
Ridges/upr slopes....65-80 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........1700 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Partly cloudy. Patchy fog after midnight.
Areas of fog early in the morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-52
Ridges/upr slopes....48-54
* Max Humidity.......
Valleys/lwr slopes...89-100 percent
Ridges/upr slopes....83-98 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....Northwest winds 5 to 8 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ414-220115-
Northern Interior Mendocino Including Leggett and Willits-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...77-85
Ridges/upr slopes....70-78
* Min Humidity.......
Valleys/lwr slopes...44-54 percent
Ridges/upr slopes....55-65 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........2600 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear. Patchy fog early in the
morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...46-53
Ridges/upr slopes....48-56
* Max Humidity.......
Valleys/lwr slopes...82-97 percent
Ridges/upr slopes....71-86 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....Northwest winds 5 to 7 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny. Patchy fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...78-86
Ridges/upr slopes....71-79
* Min Humidity.......
Valleys/lwr slopes...39-49 percent
Ridges/upr slopes....47-57 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..........4300 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...48-55
Ridges/upr slopes....49-57
* Max Humidity.......
Valleys/lwr slopes...77-92 percent
Ridges/upr slopes....70-85 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph...shifting to
the north 5 mph after midnight.
Ridges/upr slopes....Northwest winds 5 to 6 mph...shifting to
the north after midnight.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ415-220115-
Northeastern Interior Mendocino Including Covelo-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...28-34 percent
Ridges/upr slopes....31-39 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 11 mph.
Ridges/upr slopes....South winds 5 to 8 mph...shifting to the
southwest 5 to 10 mph in the afternoon.
* Mixing Height..........4600 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...48-56
Ridges/upr slopes....52-57
* Max Humidity.......
Valleys/lwr slopes...68-83 percent
Ridges/upr slopes....54-69 percent
* 20-Foot Winds...
Valleys/lwr slopes...Southwest winds 5 to 9 mph in the
evening...becoming downslope/downvalley 2
to 4 mph.
Ridges/upr slopes....West winds 5 to 9 mph in the
evening...becoming downslope/downvalley 2
to 5 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...82-90
Ridges/upr slopes....72-80
* Min Humidity.......
Valleys/lwr slopes...24-31 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....Variable 2 to 4 mph...becoming west 5 to 7
mph in the afternoon.
* Mixing Height..........6400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-59
Ridges/upr slopes....54-60
* Max Humidity.......
Valleys/lwr slopes...63-78 percent
Ridges/upr slopes....54-64 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 7 mph...shifting to the
north 5 to 6 mph after midnight.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ416-220115-
Southeastern Interior Mendocino Including Ukiah and Potter Valley-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...79-87
Ridges/upr slopes....73-81
* Min Humidity.......
Valleys/lwr slopes...38-48 percent
Ridges/upr slopes....41-51 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 11 mph.
Ridges/upr slopes....West winds 5 to 11 mph.
* Mixing Height..........3000 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-55
Ridges/upr slopes....53-59
* Max Humidity.......
Valleys/lwr slopes...74-89 percent
Ridges/upr slopes....61-76 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 11 mph.
Ridges/upr slopes....Northwest winds 5 to 11 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...79-87
Ridges/upr slopes....74-81
* Min Humidity.......
Valleys/lwr slopes...33-43 percent
Ridges/upr slopes....35-45 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 9 mph.
* Mixing Height..........3900 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...50-58
Ridges/upr slopes....55-62
* Max Humidity.......
Valleys/lwr slopes...70-85 percent
Ridges/upr slopes....57-72 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ417-220115-
Southwestern Interior Mendocino Including Boonville-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy then becoming partly cloudy.
Patchy fog early in the morning.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...71-79
Ridges/upr slopes....68-76
* Min Humidity.......
Valleys/lwr slopes...59-69 percent
Ridges/upr slopes....61-71 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........2100 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy then becoming mostly cloudy
then becoming partly cloudy. Patchy fog
early in the morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...49-54
Ridges/upr slopes....49-55
* Max Humidity.......
Valleys/lwr slopes...83-98 percent
Ridges/upr slopes....76-91 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 9 mph.
Ridges/upr slopes....Northwest winds 5 to 9 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* 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...72-80
Ridges/upr slopes....70-78
* Min Humidity.......
Valleys/lwr slopes...52-62 percent
Ridges/upr slopes....55-65 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........2400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear. Patchy fog early in the
morning.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-56
Ridges/upr slopes....51-57
* Max Humidity.......
Valleys/lwr slopes...78-93 percent
Ridges/upr slopes....72-87 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ418-220115-
Northern Lake Including Gravelly Valley-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...87-93
Ridges/upr slopes....74-82
* Min Humidity.......
Valleys/lwr slopes...22-30 percent
Ridges/upr slopes....26-34 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 9 mph.
Ridges/upr slopes....Southwest winds 5 to 9 mph.
* Mixing Height..........3800 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...51-59
Ridges/upr slopes....55-61
* Max Humidity.......
Valleys/lwr slopes...55-70 percent
Ridges/upr slopes....44-54 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 9 mph.
Ridges/upr slopes....West winds 5 to 9 mph...shifting to the
northwest 5 to 7 mph after midnight.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...87-93
Ridges/upr slopes....74-82
* Min Humidity.......
Valleys/lwr slopes...22-30 percent
Ridges/upr slopes....24-32 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph...shifting to
the southwest 5 to 7 mph in the afternoon.
* Mixing Height..........5800 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-60
Ridges/upr slopes....56-63
* Max Humidity.......
Valleys/lwr slopes...55-70 percent
Ridges/upr slopes....46-56 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph...shifting to the
north 5 mph after midnight.
Ridges/upr slopes....West winds 5 to 8 mph...shifting to the
north 5 to 6 mph after midnight.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ419-220115-
Eastern Lake Including Clearlake and Middletown-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Partly cloudy then becoming mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...88-92
Ridges/upr slopes....82-87
* Min Humidity.......
Valleys/lwr slopes...24-32 percent
Ridges/upr slopes....28-36 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 11 mph.
Ridges/upr slopes....West winds 5 to 6 mph...shifting to the
southwest 6 to 11 mph in the afternoon.
* Mixing Height..........4600 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-59
Ridges/upr slopes....54-62
* Max Humidity.......
Valleys/lwr slopes...64-79 percent
Ridges/upr slopes....53-68 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 10 mph.
Ridges/upr slopes....West winds 5 to 10 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...87-92
Ridges/upr slopes....82-87
* Min Humidity.......
Valleys/lwr slopes...19-26 percent
Ridges/upr slopes....20-28 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........6500 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-60
Ridges/upr slopes....56-64
* Max Humidity.......
Valleys/lwr slopes...61-76 percent
Ridges/upr slopes....53-63 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ420-220115-
Southern Lake Including Cobb and Konocti-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...83-89
Ridges/upr slopes....76-83
* Min Humidity.......
Valleys/lwr slopes...31-39 percent
Ridges/upr slopes....32-42 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 11 mph.
Ridges/upr slopes....Southwest winds 5 to 11 mph.
* Mixing Height..........3300 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...53-59
Ridges/upr slopes....58-63
* Max Humidity.......
Valleys/lwr slopes...58-69 percent
Ridges/upr slopes....51-61 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 10 mph.
Ridges/upr slopes....West winds 5 to 10 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...83-91
Ridges/upr slopes....78-85
* Min Humidity.......
Valleys/lwr slopes...23-31 percent
Ridges/upr slopes....26-34 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 8 mph.
* Mixing Height..........6400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...54-61
Ridges/upr slopes....61-65
* Max Humidity.......
Valleys/lwr slopes...55-67 percent
Ridges/upr slopes....47-57 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
CAZ421-220115-
Western Lake Including Lakeport-
1244 AM PDT Fri Aug 21 2026
.TODAY...
* Sky/Weather............Mostly cloudy.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...82-87
Ridges/upr slopes....76-81
* Min Humidity.......
Valleys/lwr slopes...32-42 percent
Ridges/upr slopes....35-42 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 6 mph...shifting to
the southwest 5 to 9 mph in the afternoon.
Ridges/upr slopes....West winds 5 to 9 mph.
* Mixing Height..........3600 ft AGL.
* Chc of Wetting Rain....0 percent.
.TONIGHT...
* Sky/Weather............Partly cloudy.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...50-57
Ridges/upr slopes....53-60
* Max Humidity.......
Valleys/lwr slopes...67-82 percent
Ridges/upr slopes....56-71 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 9 mph.
Ridges/upr slopes....West winds 5 to 9 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY...
* Sky/Weather............Sunny.
* Chance Lightning.......0%.
* Max Temperature.......
Valleys/lwr slopes...81-87
Ridges/upr slopes....75-80
* Min Humidity.......
Valleys/lwr slopes...32-40 percent
Ridges/upr slopes....32-39 percent
* 20-Foot Winds...
Valleys/lwr slopes...West winds 5 to 8 mph.
Ridges/upr slopes....West winds 5 to 9 mph.
* Mixing Height..........5200 ft AGL.
* Chc of Wetting Rain....0 percent.
.SATURDAY NIGHT...
* Sky/Weather............Mostly clear.
* Chance Lightning.......0%.
* Min Temperature.......
Valleys/lwr slopes...52-58
Ridges/upr slopes....55-62
* Max Humidity.......
Valleys/lwr slopes...62-77 percent
Ridges/upr slopes....54-64 percent
* 20-Foot Winds...
Valleys/lwr slopes...Northwest winds 5 to 8 mph.
Ridges/upr slopes....Northwest winds 5 to 8 mph.
* Mixing Height..........400 ft AGL.
* Chc of Wetting Rain....0 percent.
$$
.EXTENDED FORECAST FOR DAYS 3 THROUGH 5...
...Northwest California Coast...
.SUNDAY...Mostly cloudy. Patchy fog. Lows in the lower to mid
50s. Highs 62 to 70. Northwest winds 5 mph.
.MONDAY...Mostly cloudy. Patchy fog in the morning. Patchy fog.
Lows in the lower to mid 50s. Highs 62 to 69. Winds generally
less than 5 mph.
.TUESDAY...Mostly cloudy. Patchy fog in the morning. Patchy fog.
Lows in the lower to mid 50s. Highs 60 to 66. Winds generally
less than 5 mph.
...Northwest California Interior...
.SUNDAY...Mostly clear. Lows 55 to 63. Highs 83 to 94. West winds
5 mph.
.MONDAY...Mostly clear. Lows 53 to 61. Highs 82 to 93. Southwest
winds 5 mph.
.TUESDAY...Partly cloudy. Lows 53 to 61. Highs 81 to 91. West
winds 5 mph.
.6 to 10 DAY OUTLOOK...Wednesday August 26 THROUGH Sunday August 30, 2026...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
$$
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