474
FNUS56 KEKA 170727
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE EUREKA CA
1227 AM PDT WED SEP 17 2025
...A REMNANT TROPICAL SYSTEM WILL BRING CHANCES FOR SHOWERS AND
SOME THUNDERSTORMS THURSDAY THROUGH SATURDAY ZONES 264, 277, 283
...ELEVATED NORTHEAST RIDGETOP WINDS FOR INTERIOR DEL NORTE COUNTY
ZONE 203 WEDNESDAY NIGHT TO THURSDAY
...BREEZY WINDS AND LOW RH THURSDAY AFTERNOON FOR LAKE COUNTY ZONE
264
DISCUSSION
UNSEASONABLY WARM AND DRY CONDITIONS WILL PERSIST
THROUGH WEDNESDAY AND WILL AID IN QUICKLY DRYING OUT FUELS.
INTERIOR VALLEY HIGHS WILL BE IN THE MID 90S WITH HUMIDITY AS LOW
AS THE UPPER TEENS. STRONG THERMAL BELTS WILL MAINTAIN POOR
OVERNIGHT RECOVERY AT MID AND UPPER ELEVATIONS. WINDS WILL BE
MOSTLY GENTLE AND TERRAIN DRIVEN. DAYTIME TEMPERATURES WILL LOWER
LATER IN THE WEEK WITH MORE MOISTURE AND CLOUD COVER ENTERING THE
AREA. THERE WILL BE A SLIGHT CHANCE (20%) OF SEMI-DRY
THUNDERSTORMS THURSDAY AFTERNOON MOSTLY FOCUSED AROUND THE YOLLA
BOLLYS AND OVER MENDOCINO AND LAKE COUNTIES WITH SOME SLIGHT
POTENTIAL FURTHER NORTH. A SLIGHT CHANCE (20%) FOR ADDITIONAL MORE
RAINFALL PRODUCTIVE SHOWERS AND THUNDERSTORMS FRIDAY AND
SATURDAY, MAINLY FOR TRINITY COUNTY.
CAZ201-180115-
NORTH COAST-
1227 AM PDT WED SEP 17 2025
TODAY
* SKY/WEATHER............SUNNY. PATCHY DENSE FOG LATE IN THE
MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...72-80
RIDGES/UPR SLOPES....68-76
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...68-78 PERCENT
RIDGES/UPR SLOPES....59-69 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 11 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 7 TO 14 MPH.
* MIXING HEIGHT..........2200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY. PATCHY DENSE FOG IN THE
LATE EVENING AND EARLY MORNING.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-56
RIDGES/UPR SLOPES....52-59
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...80-95 PERCENT
RIDGES/UPR SLOPES....69-84 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 11 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............PARTLY CLOUDY. PATCHY DENSE FOG IN THE
MORNING.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...72-80
RIDGES/UPR SLOPES....68-76
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...74-84 PERCENT
RIDGES/UPR SLOPES....66-76 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........1900 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY
THEN BECOMING PARTLY CLOUDY. PATCHY DENSE
FOG AFTER MIDNIGHT.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-59
RIDGES/UPR SLOPES....55-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...77-92 PERCENT
RIDGES/UPR SLOPES....66-81 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....NORTHEAST WINDS 5 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ202-180115-
COASTAL MENDOCINO-
1227 AM PDT WED SEP 17 2025
TODAY
* SKY/WEATHER............SUNNY. PATCHY DENSE FOG EARLY IN THE
MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...73-81
RIDGES/UPR SLOPES....77-85
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...60-70 PERCENT
RIDGES/UPR SLOPES....43-53 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 9 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........1400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...53-58
RIDGES/UPR SLOPES....52-60
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...78-93 PERCENT
RIDGES/UPR SLOPES....67-82 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...69-77
RIDGES/UPR SLOPES....73-81
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...64-79 PERCENT
RIDGES/UPR SLOPES....53-63 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........1300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-57
RIDGES/UPR SLOPES....50-58
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...82-97 PERCENT
RIDGES/UPR SLOPES....77-92 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 2 TO 4 MPH...BECOMING
NORTHEAST 5 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....EAST WINDS 5 MPH.
* MIXING HEIGHT..........100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ203-204-180115-
UPPER SMITH-LOWER MIDDLE KLAMATH-
1227 AM PDT WED SEP 17 2025
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...84-92
RIDGES/UPR SLOPES....71-79
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...34-42 PERCENT
RIDGES/UPR SLOPES....31-39 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHEAST WINDS 5 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 8 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....EAST WINDS 5 MPH...SHIFTING TO THE
NORTHWEST 5 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-59
RIDGES/UPR SLOPES....56-60
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...63-78 PERCENT
RIDGES/UPR SLOPES....50-60 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTH WINDS 7 TO 14 MPH...SHIFTING TO THE
NORTHEAST 8 TO 15 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............SUNNY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...83-91
RIDGES/UPR SLOPES....72-80
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...38-48 PERCENT
RIDGES/UPR SLOPES....36-46 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHEAST WINDS 8 TO 15 MPH...SHIFTING TO
THE NORTHWEST 7 TO 14 MPH IN THE
AFTERNOON.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 TO 9 MPH...SHIFTING TO
THE NORTH IN THE AFTERNOON.
* MIXING HEIGHT..........3300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...56-61
RIDGES/UPR SLOPES....58-63
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...61-76 PERCENT
RIDGES/UPR SLOPES....46-56 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 11 MPH...SHIFTING TO THE
NORTHEAST 5 TO 8 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 7 MPH...SHIFTING TO THE
EAST AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ211-212-180115-
HOOPA-VAN DUZEN/MAD RIVER-
1227 AM PDT WED SEP 17 2025
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...84-92
RIDGES/UPR SLOPES....75-83
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...26-34 PERCENT
RIDGES/UPR SLOPES....31-39 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 10 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 10 MPH.
* MIXING HEIGHT..........4600 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-61
RIDGES/UPR SLOPES....53-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...65-80 PERCENT
RIDGES/UPR SLOPES....52-62 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 10 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 6 MPH...SHIFTING TO THE
NORTHEAST AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............PARTLY CLOUDY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...85-93
RIDGES/UPR SLOPES....76-84
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...32-40 PERCENT
RIDGES/UPR SLOPES....36-44 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....EAST WINDS 5 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY
THEN BECOMING PARTLY CLOUDY. SLIGHT CHANCE
OF SHOWERS IN THE LATE EVENING AND
OVERNIGHT.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...58-63
RIDGES/UPR SLOPES....54-62
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...67-82 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 NORTHEAST 5 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ283-180115-
TRINITY-
1227 AM PDT WED SEP 17 2025
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...89-94
RIDGES/UPR SLOPES....74-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...14-19 PERCENT
RIDGES/UPR SLOPES....17-25 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
SOUTHEAST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 6 MPH...SHIFTING TO
THE SOUTH IN THE AFTERNOON.
* MIXING HEIGHT..........7300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...56-61
RIDGES/UPR SLOPES....53-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...54-64 PERCENT
RIDGES/UPR SLOPES....41-51 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 6 MPH...SHIFTING TO
THE NORTHEAST AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............PARTLY CLOUDY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...88-93
RIDGES/UPR SLOPES....74-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...17-22 PERCENT
RIDGES/UPR SLOPES....19-27 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 1 TO 3 MPH...BECOMING
SOUTHEAST 5 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....EAST WINDS 5 TO 6 MPH...SHIFTING TO THE
SOUTH IN THE AFTERNOON.
* MIXING HEIGHT..........6000 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS
THROUGH THE NIGHT.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 60
RIDGES/UPR SLOPES....53-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...59-71 PERCENT
RIDGES/UPR SLOPES....47-57 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING LIGHT WINDS 2 TO 4 MPH.
RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 6 MPH...SHIFTING TO
THE NORTH 5 TO 9 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ276-180115-
INTERIOR MENDOCINO-
1227 AM PDT WED SEP 17 2025
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...87-95
RIDGES/UPR SLOPES....82-90
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...24-32 PERCENT
RIDGES/UPR SLOPES....28-36 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 MPH...SHIFTING TO THE WEST 5
TO 8 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 MPH...SHIFTING TO THE
WEST 5 TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...56-64
RIDGES/UPR SLOPES....56-64
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...56-71 PERCENT
RIDGES/UPR SLOPES....54-64 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...84-92
RIDGES/UPR SLOPES....80-87
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...31-39 PERCENT
RIDGES/UPR SLOPES....36-44 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTHEAST WINDS 5 TO 7 MPH...SHIFTING TO
THE SOUTH 5 TO 9 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....EAST WINDS 5 TO 6 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY. SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-62
RIDGES/UPR SLOPES....55-63
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...68-83 PERCENT
RIDGES/UPR SLOPES....62-77 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING LIGHT WINDS 2 TO 4 MPH.
RIDGES/UPR SLOPES....EAST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ277-180115-
W MENDOCINO NF/E MENDOCINO UNIT-
1227 AM PDT WED SEP 17 2025
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...88-96
RIDGES/UPR SLOPES....77-85
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...16-21 PERCENT
RIDGES/UPR SLOPES....17-24 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....WEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........6800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-63
RIDGES/UPR SLOPES....59-67
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...53-63 PERCENT
RIDGES/UPR SLOPES....36-46 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 6 MPH...SHIFTING TO THE
EAST AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...88-95
RIDGES/UPR SLOPES....76-84
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...20-25 PERCENT
RIDGES/UPR SLOPES....21-29 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 MPH...SHIFTING TO THE
SOUTH 5 TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........6600 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS
THROUGH THE NIGHT. SLIGHT CHANCE OF
THUNDERSTORMS IN THE LATE EVENING AND
OVERNIGHT.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-62
RIDGES/UPR SLOPES....57-65
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...62-77 PERCENT
RIDGES/UPR SLOPES....48-58 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING LIGHT WINDS 2 TO 4 MPH.
RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 7 MPH...SHIFTING TO
THE NORTHEAST 5 TO 6 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ264-180115-
LAKE COUNTY PORTION OF LAKE/NAPA/SONOMA RU-
1227 AM PDT WED SEP 17 2025
TODAY
* SKY/WEATHER............SUNNY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 90
RIDGES/UPR SLOPES....82-88
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...14 PERCENT
RIDGES/UPR SLOPES....17-22 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 SOUTHWEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........7100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 61
RIDGES/UPR SLOPES....69-72
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...45 PERCENT
RIDGES/UPR SLOPES....31-39 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING LIGHT WINDS 2 TO 4 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 88
RIDGES/UPR SLOPES....79-85
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...19 PERCENT
RIDGES/UPR SLOPES....24-30 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 1 TO 3 MPH...BECOMING
SOUTH 5 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 MPH...SHIFTING TO THE
SOUTH 5 TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS
THROUGH THE NIGHT. SLIGHT CHANCE OF
THUNDERSTORMS IN THE LATE EVENING AND
OVERNIGHT.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 58
RIDGES/UPR SLOPES....63-68
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...66 PERCENT
RIDGES/UPR SLOPES....44-54 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 MPH...SHIFTING TO THE
SOUTH AFTER MIDNIGHT.
* MIXING HEIGHT..........100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
EXTENDED FORECAST FOR DAYS 3 THROUGH 5
..NORTHWEST CALIFORNIA COAST
FRIDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. PATCHY
FOG. LOWS IN THE MID TO UPPER 50S. HIGHS 65 TO 71. NORTHWEST
WINDS 5 MPH.
SATURDAY
PARTLY CLOUDY. PATCHY FOG IN THE MORNING. LOWS IN THE
LOWER TO MID 50S. HIGHS 65 TO 70. NORTH WINDS 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE MID TO UPPER 50S. HIGHS
66 TO 73. NORTH WINDS 5 MPH.
..NORTHWEST CALIFORNIA INTERIOR
FRIDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 55 TO 63. HIGHS 76 TO 87. SOUTH WINDS 5 MPH.
SATURDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 55 TO 63. HIGHS 79 TO 88. WINDS GENERALLY
LESS THAN 5 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 57 TO 65. HIGHS 83 TO 92. NORTHWEST
WINDS 5 MPH.
6 TO 10 DAY OUTLOOK
MONDAY SEPTEMBER 22 THROUGH FRIDAY SEPTEMBER 26, 2025...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
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