290
FNUS56 KEKA 152118
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE EUREKA CA
218 PM PDT MON SEP 15 2025
DISCUSSION
UNSEASONABLY WARM AND DRY CONDITIONS WILL PERSIST
THROUGH TUESDAY AND 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 CONDITIONS WILL EASE LATER IN THE WEEK
WITH MORE MOISTURE ENTERING THE AREA. THERE WILL BE A SLIGHT
CHANCE (20%) OF SEMI-DRY THUNDERSTORMS THURSDAY AND FRIDAY
AFTERNOONS MOSTLY FOCUSED AROUND THE YOLLA BOLLYS AND OVER
MENDOCINO AND LAKE COUNTIES WITH SOME SLIGHT POTENTIAL FURTHER
NORTH.
CAZ201-161345-
NORTH COAST-
218 PM PDT MON SEP 15 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR. PATCHY DENSE FOG IN THE LATE
EVENING AND OVERNIGHT.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...56-62
RIDGES/UPR SLOPES....57-65
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...69-84 PERCENT
RIDGES/UPR SLOPES....54-69 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 6 MPH...SHIFTING TO
THE SOUTHEAST AFTER MIDNIGHT.
RIDGES/UPR SLOPES....EAST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY. PATCHY DENSE FOG EARLY IN THE
MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...77-85
RIDGES/UPR SLOPES....75-83
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...58-68 PERCENT
RIDGES/UPR SLOPES....41-51 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 7 MPH...SHIFTING TO THE
WEST 5 TO 8 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 8 MPH...SHIFTING TO
THE SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........2900 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR. PATCHY FOG EARLY IN THE
MORNING.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-57
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...WEST WINDS 5 MPH...SHIFTING TO THE NORTH
AFTER MIDNIGHT.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING NORTHEAST 5
MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY. PATCHY FOG EARLY IN THE MORNING.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...75-83
RIDGES/UPR SLOPES....71-79
* 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 5 TO 11 MPH.
* MIXING HEIGHT..........2700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ202-161345-
COASTAL MENDOCINO-
218 PM PDT MON SEP 15 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...56-59
RIDGES/UPR SLOPES....54-62
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...78-93 PERCENT
RIDGES/UPR SLOPES....67-82 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...DOWNSLOPE/DOWNVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....EAST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...73-81
RIDGES/UPR SLOPES....76-84
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...59-69 PERCENT
RIDGES/UPR SLOPES....42-52 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 6 MPH...SHIFTING TO THE
WEST IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 6 MPH...SHIFTING TO
THE SOUTHWEST IN THE AFTERNOON.
* MIXING HEIGHT..........1700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-58
RIDGES/UPR SLOPES....50-58
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...82-97 PERCENT
RIDGES/UPR SLOPES....71-86 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 MPH.
* MIXING HEIGHT..........100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...72-80
RIDGES/UPR SLOPES....76-84
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...60-70 PERCENT
RIDGES/UPR SLOPES....43-53 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 MPH...SHIFTING TO THE
NORTHWEST 5 TO 7 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING WEST 5 TO 6
MPH IN THE AFTERNOON.
* MIXING HEIGHT..........1900 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ203-204-161345-
UPPER SMITH-LOWER MIDDLE KLAMATH-
218 PM PDT MON SEP 15 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 60
RIDGES/UPR SLOPES....59-64
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...52-62 PERCENT
RIDGES/UPR SLOPES....31-41 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTHEAST WINDS 5 TO 8 MPH...SHIFTING TO
THE NORTHEAST 5 TO 6 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....EAST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...87-95
RIDGES/UPR SLOPES....74-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...19-27 PERCENT
RIDGES/UPR SLOPES....19-25 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....SOUTHEAST WINDS 5 TO 9 MPH...SHIFTING TO
THE SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-59
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 7 MPH...SHIFTING TO
THE SOUTHEAST 5 TO 6 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...87-95
RIDGES/UPR SLOPES....73-81
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...34-42 PERCENT
RIDGES/UPR SLOPES....31-39 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....EAST WINDS 5 MPH...SHIFTING TO THE WEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........6100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ211-212-161345-
HOOPA-VAN DUZEN/MAD RIVER-
218 PM PDT MON SEP 15 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...57-62
RIDGES/UPR SLOPES....54-62
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...61-76 PERCENT
RIDGES/UPR SLOPES....48-58 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH...SHIFTING TO
THE SOUTHEAST 5 TO 6 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....EAST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...89-97
RIDGES/UPR SLOPES....78-86
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...20-28 PERCENT
RIDGES/UPR SLOPES....20-28 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTHEAST WINDS 5 TO 7 MPH...SHIFTING TO
THE SOUTHWEST 5 TO 10 MPH IN THE
AFTERNOON.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 8 MPH...SHIFTING TO
THE SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5600 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-60
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 8 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 5 MPH.
RIDGES/UPR SLOPES....SOUTH 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.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...88-96
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...NORTHWEST WINDS 5 TO 11 MPH.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 6 MPH...SHIFTING TO
THE SOUTHWEST IN THE AFTERNOON.
* MIXING HEIGHT..........6700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ283-161345-
TRINITY-
218 PM PDT MON SEP 15 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-59
RIDGES/UPR SLOPES....52-60
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...50-60 PERCENT
RIDGES/UPR SLOPES....36-46 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...DOWNSLOPE/DOWNVALLEY 2 TO 4 MPH...BECOMING
EAST 5 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....EAST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...87-93
RIDGES/UPR SLOPES....74-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...14-19 PERCENT
RIDGES/UPR SLOPES....16-23 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...EAST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 8 MPH...SHIFTING TO
THE SOUTH IN THE AFTERNOON.
* MIXING HEIGHT..........7100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...56-60
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...EAST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...90-95
RIDGES/UPR SLOPES....76-84
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...14-19 PERCENT
RIDGES/UPR SLOPES....17-25 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....SOUTH WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........8400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ276-161345-
INTERIOR MENDOCINO-
218 PM PDT MON SEP 15 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...56-64
RIDGES/UPR SLOPES....58-66
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...63-78 PERCENT
RIDGES/UPR SLOPES....55-70 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 10 MPH...SHIFTING TO
THE NORTHEAST 5 TO 6 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 7 MPH...SHIFTING TO THE
EAST 5 TO 6 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...86-94
RIDGES/UPR SLOPES....81-89
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...25-33 PERCENT
RIDGES/UPR SLOPES....29-37 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTHEAST WINDS 5 TO 8 MPH...SHIFTING TO
THE SOUTHWEST 5 TO 9 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 7 MPH...SHIFTING TO
THE SOUTHWEST IN THE AFTERNOON.
* MIXING HEIGHT..........5100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-63
RIDGES/UPR SLOPES....56-64
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...64-79 PERCENT
RIDGES/UPR SLOPES....58-73 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 9 MPH...SHIFTING TO
THE NORTHEAST 5 MPH AFTER MIDNIGHT.
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.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...88-96
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...UPSLOPE/UPVALLEY 2 TO 5 MPH...BECOMING
SOUTHWEST 5 TO 9 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....EAST WINDS 5 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........6800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ277-161345-
W MENDOCINO NF/E MENDOCINO UNIT-
218 PM PDT MON SEP 15 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-62
RIDGES/UPR SLOPES....57-65
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...60-75 PERCENT
RIDGES/UPR SLOPES....43-53 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH...SHIFTING TO
THE EAST 5 TO 6 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....EAST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...88-95
RIDGES/UPR SLOPES....76-84
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...18-23 PERCENT
RIDGES/UPR SLOPES....19-26 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....SOUTH WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........6500 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...53-61
RIDGES/UPR SLOPES....58-66
* 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
EAST AFTER MIDNIGHT.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........0 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...90-98
RIDGES/UPR SLOPES....78-86
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...16-21 PERCENT
RIDGES/UPR SLOPES....17-24 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST 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..........7700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ264-161345-
LAKE COUNTY PORTION OF LAKE/NAPA/SONOMA RU-
218 PM PDT MON SEP 15 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 58
RIDGES/UPR SLOPES....66-70
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...63 PERCENT
RIDGES/UPR SLOPES....41-51 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH...SHIFTING TO
THE NORTHEAST 5 MPH AFTER MIDNIGHT.
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.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 89
RIDGES/UPR SLOPES....80-86
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...17 PERCENT
RIDGES/UPR SLOPES....21-26 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTHEAST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 6 MPH...SHIFTING TO
THE SOUTH 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........6300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY NIGHT
* SKY/WEATHER............CLEAR.
* 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...DOWNSLOPE/DOWNVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....WEST 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.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 92
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
SOUTH 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING SOUTH 5 TO
7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........7700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
EXTENDED FORECAST FOR DAYS 3 THROUGH 5
..NORTHWEST CALIFORNIA COAST
THURSDAY
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 50S. HIGHS
65 TO 71. NORTH WINDS 5 MPH.
FRIDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN
THE MID TO UPPER 50S. HIGHS 64 TO 70. NORTH WINDS 5 MPH.
SATURDAY
PATCHY FOG. MOSTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS. LOWS IN THE MID TO UPPER 50S. HIGHS 64 TO 70. WINDS
GENERALLY LESS THAN 5 MPH.
..NORTHWEST CALIFORNIA INTERIOR
THURSDAY
MOSTLY CLEAR. LOWS 57 TO 65. HIGHS 83 TO 93.
NORTHWEST WINDS 5 MPH.
FRIDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS 57 TO 65.
HIGHS 75 TO 86. SOUTH WINDS 5 MPH.
SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
55 TO 63. HIGHS 78 TO 87. WINDS GENERALLY LESS THAN 5 MPH.
6 TO 10 DAY OUTLOOK
SUNDAY SEPTEMBER 21 THROUGH THURSDAY SEPTEMBER 25, 2025...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
VISIT US AT WWW.WEATHER.GOV/EUREKA
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