570
FNUS56 KEKA 161920
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE EUREKA CA
1220 PM PDT TUE SEP 16 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.
CAZ201-171345-
NORTH COAST-
1220 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR. PATCHY DENSE FOG UNTIL EARLY
MORNING.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-58
RIDGES/UPR SLOPES....53-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...79-94 PERCENT
RIDGES/UPR SLOPES....67-82 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...73-81
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 12 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 6 TO 13 MPH.
* MIXING HEIGHT..........2100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-57
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 12 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 12 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............PARTLY CLOUDY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...72-80
RIDGES/UPR SLOPES....68-76
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...76-86 PERCENT
RIDGES/UPR SLOPES....67-77 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.
CAZ202-171345-
COASTAL MENDOCINO-
1220 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-58
RIDGES/UPR SLOPES....52-60
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...82-97 PERCENT
RIDGES/UPR SLOPES....71-86 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 6 MPH.
* MIXING HEIGHT..........100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* 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.
WEDNESDAY 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...81-96 PERCENT
RIDGES/UPR SLOPES....71-86 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST 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....72-80
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...67-82 PERCENT
RIDGES/UPR SLOPES....56-66 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 6 MPH...SHIFTING TO THE
WEST IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 6 MPH...SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* MIXING HEIGHT..........1400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ203-204-171345-
UPPER SMITH-LOWER MIDDLE KLAMATH-
1220 PM PDT TUE SEP 16 2025
...ELEVATED NORTHEAST RIDGETOP WINDS FOR INTERIOR DEL NORTE COUNTY
WEDNESDAY NIGHT TO THURSDAY
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 60
RIDGES/UPR SLOPES....59-62
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...63-78 PERCENT
RIDGES/UPR SLOPES....42-52 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....SOUTHWEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* 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...SOUTH WINDS 5 TO 6 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 8 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHEAST 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.
WEDNESDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-58
RIDGES/UPR SLOPES....56-60
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...63-78 PERCENT
RIDGES/UPR SLOPES....49-59 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 9 MPH...SHIFTING TO
THE SOUTHEAST 5 TO 12 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...84-92
RIDGES/UPR SLOPES....72-80
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...39-49 PERCENT
RIDGES/UPR SLOPES....37-47 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHEAST WINDS 6 TO 13 MPH...SHIFTING TO
THE NORTHWEST IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 TO 10 MPH...SHIFTING TO
THE NORTH 5 TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ211-212-171345-
HOOPA-VAN DUZEN/MAD RIVER-
1220 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...57-61
RIDGES/UPR SLOPES....53-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...70-85 PERCENT
RIDGES/UPR SLOPES....55-70 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 6 MPH...SHIFTING TO
THE EAST 5 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...84-92
RIDGES/UPR SLOPES....76-84
* 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..........4500 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-60
RIDGES/UPR SLOPES....52-60
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...66-81 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 6 MPH...SHIFTING TO
THE NORTHEAST 5 MPH 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...33-41 PERCENT
RIDGES/UPR SLOPES....38-46 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 MPH...SHIFTING TO THE
NORTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....EAST WINDS 5 TO 6 MPH...SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* MIXING HEIGHT..........5400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ283-171345-
TRINITY-
1220 PM PDT TUE SEP 16 2025
...A REMNANT TROPICAL SYSTEM WILL BRING CHANCES FOR SHOWERS AND
SOME THUNDERSTORMS THURSDAY THROUGH SATURDAY ZONES
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 60
RIDGES/UPR SLOPES....53-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...55-70 PERCENT
RIDGES/UPR SLOPES....42-52 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....SOUTH WINDS 5 TO 6 MPH...SHIFTING TO THE
SOUTHEAST 5 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...89-95
RIDGES/UPR SLOPES....75-83
* 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
WEST 5 TO 9 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........7300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-60
RIDGES/UPR SLOPES....53-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...53-63 PERCENT
RIDGES/UPR SLOPES....42-52 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 6 MPH...SHIFTING TO
THE NORTHEAST 5 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............PARTLY CLOUDY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...87-93
RIDGES/UPR SLOPES....74-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...18-23 PERCENT
RIDGES/UPR SLOPES....21-29 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....EAST WINDS 5 MPH...SHIFTING TO THE SOUTH 5
TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........7900 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ276-171345-
INTERIOR MENDOCINO-
1220 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-63
RIDGES/UPR SLOPES....57-65
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...64-79 PERCENT
RIDGES/UPR SLOPES....58-73 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 6 MPH...SHIFTING TO
THE NORTH AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* 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....NORTH WINDS 5 TO 6 MPH...SHIFTING TO THE
WEST 5 TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY
THEN BECOMING PARTLY CLOUDY THEN BECOMING
MOSTLY CLOUDY.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-63
RIDGES/UPR SLOPES....56-64
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...58-73 PERCENT
RIDGES/UPR SLOPES....54-69 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...84-92
RIDGES/UPR SLOPES....79-86
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...34-42 PERCENT
RIDGES/UPR SLOPES....38-48 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHEAST WINDS 5 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 9 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 TO 6 MPH...SHIFTING TO
THE SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ277-171345-
W MENDOCINO NF/E MENDOCINO UNIT-
1220 PM PDT TUE SEP 16 2025
...A REMNANT TROPICAL SYSTEM WILL BRING CHANCES FOR SHOWERS AND
SOME THUNDERSTORMS THURSDAY THROUGH SATURDAY ZONES
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...53-61
RIDGES/UPR SLOPES....57-65
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...63-78 PERCENT
RIDGES/UPR SLOPES....44-54 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 6 MPH...SHIFTING TO THE
NORTH 5 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 6 MPH...SHIFTING TO
THE SOUTHEAST AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* 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 9 MPH.
RIDGES/UPR SLOPES....WEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........6900 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR THEN BECOMING MOSTLY CLOUDY
THEN BECOMING PARTLY CLOUDY THEN BECOMING
MOSTLY CLOUDY.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-63
RIDGES/UPR SLOPES....59-67
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...54-64 PERCENT
RIDGES/UPR SLOPES....37-47 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 9 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 6 MPH...SHIFTING TO
THE EAST 5 MPH 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...87-95
RIDGES/UPR SLOPES....76-84
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...21-26 PERCENT
RIDGES/UPR SLOPES....22-29 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 TO 6 MPH...SHIFTING TO
THE SOUTH 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........7300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ264-171345-
LAKE COUNTY PORTION OF LAKE/NAPA/SONOMA RU-
1220 PM PDT TUE SEP 16 2025
...A REMNANT TROPICAL SYSTEM WILL BRING CHANCES FOR SHOWERS AND
SOME THUNDERSTORMS THURSDAY THROUGH SATURDAY ZONES
...BREEZY WINDS AND LOW RH THURSDAY AFTERNOON
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 59
RIDGES/UPR SLOPES....AROUND 70
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...58 PERCENT
RIDGES/UPR SLOPES....35-45 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 90
RIDGES/UPR SLOPES....83-88
* 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....SOUTHEAST WINDS 5 TO 6 MPH...SHIFTING TO
THE WEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........7200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 61
RIDGES/UPR SLOPES....69-72
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...46 PERCENT
RIDGES/UPR SLOPES....32-40 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....WEST 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
THEN BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 88
RIDGES/UPR SLOPES....80-85
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...19 PERCENT
RIDGES/UPR SLOPES....23-29 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHEAST WINDS 5 TO 6 MPH...SHIFTING TO
THE SOUTH 5 TO 7 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....EAST WINDS 5 MPH...SHIFTING TO THE SOUTH 6
TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5900 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. LOWS IN
THE MID TO UPPER 50S. HIGHS 64 TO 70. NORTH WINDS 5 MPH.
SATURDAY
MOSTLY CLOUDY. PATCHY FOG. LOWS IN THE LOWER TO MID
50S. HIGHS 64 TO 69. WINDS GENERALLY LESS THAN 5 MPH.
SUNDAY
PARTLY CLOUDY. PATCHY FOG. LOWS IN THE LOWER TO MID
50S. HIGHS 66 TO 72. NORTH WINDS 5 MPH.
..NORTHWEST CALIFORNIA INTERIOR
FRIDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS 55 TO
63. HIGHS 76 TO 87. SOUTH WINDS 5 MPH.
SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
54 TO 62. HIGHS 78 TO 87. WINDS GENERALLY LESS THAN 5 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 54 TO 62. HIGHS 82 TO 92. WINDS
GENERALLY LESS THAN 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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