667
FNUS56 KEKA 202035
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE EUREKA CA
135 PM PDT SUN SEP 20 2026
DISCUSSION
HIGH PRESSURE OVER THE PACIFIC NORTHWEST WILL MAINTAIN
WARM, DRY WEATHER ACROSS INTERIOR VALLEYS THROUGH MONDAY WITH
ZERO CHANCE OF WETTING RAIN. INTERIOR HIGHS WILL CONTINUE REACH
THE LOW 980S WITH RH AROUND 20 PERCENT. DAYTIME WINDS WILL REMAIN
GENTLE AND TERRAIN DRIVEN. LIGHT OFFSHORE WINDS WITH AN EASTERLY
COMPONENT WILL DEVELOP TUESDAY NIGHT INTO WEDNESDAY MORNING AS
LOW PRESSURE SYSTEM MOVES OVERHEAD. THIS LOW WILL ALSO COOL
CONDITIONS SLIGHTLY MID WEEK AND PULL IN MORE MARINE INFLUENCE.
CAZ401-211315-
COASTAL DEL NORTE-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY FOG IN THE LATE
EVENING AND EARLY MORNING. AREAS OF FOG
LATE IN THE NIGHT.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-54
RIDGES/UPR SLOPES....50-53
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...94-100 PERCENT
RIDGES/UPR SLOPES....92-100 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...63-69
RIDGES/UPR SLOPES....61-68
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...75-85 PERCENT
RIDGES/UPR SLOPES....76-86 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 2 TO 4 MPH...BECOMING WEST 5
TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING WEST 5 TO 6
MPH IN THE AFTERNOON.
* MIXING HEIGHT..........1200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING MOSTLY CLOUDY. PATCHY FOG IN
THE LATE EVENING AND OVERNIGHT.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-54
RIDGES/UPR SLOPES....50-53
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...92-100 PERCENT
RIDGES/UPR SLOPES....92-100 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 MPH IN THE EVENING...BECOMING
DOWNSLOPE/DOWNVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING LIGHT WINDS 2 TO 4 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING SUNNY. PATCHY FOG IN THE
MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...64-71
RIDGES/UPR SLOPES....63-69
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...64-77 PERCENT
RIDGES/UPR SLOPES....70-80 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 TO 9 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING NORTHWEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........1700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ402-211315-
INTERIOR DEL NORTE INCLUDING THE SMITH RIVER VALLEY-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY
THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-56
RIDGES/UPR SLOPES....53-59
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...81-96 PERCENT
RIDGES/UPR SLOPES....64-79 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...DOWNSLOPE/DOWNVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...70-78
RIDGES/UPR SLOPES....65-73
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...68-78 PERCENT
RIDGES/UPR SLOPES....69-79 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 1 TO 3 MPH...BECOMING
WEST 5 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 MPH...SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* MIXING HEIGHT..........2200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-55
RIDGES/UPR SLOPES....52-56
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...83-98 PERCENT
RIDGES/UPR SLOPES....69-84 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...DOWNSLOPE/DOWNVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 MPH...SHIFTING TO THE
NORTHEAST 5 TO 6 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...70-78
RIDGES/UPR SLOPES....64-72
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...63-73 PERCENT
RIDGES/UPR SLOPES....59-69 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHEAST WINDS 5 TO 6 MPH...SHIFTING TO
THE NORTHWEST IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 TO 6 MPH...SHIFTING TO
THE NORTHWEST IN THE AFTERNOON.
* MIXING HEIGHT..........3200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ403-211315-
NORTHEASTERN INTERIOR HUMBOLDT AND SOUTHWESTERN SISKIYOU
INCLUDING ORLEANS-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY
THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-59
RIDGES/UPR SLOPES....56-59
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...60-75 PERCENT
RIDGES/UPR SLOPES....48-58 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...DOWNSLOPE/DOWNVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY 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....37-47 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 1 TO 3 MPH...BECOMING
SOUTHWEST 5 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING WEST 5 TO 6
MPH IN THE AFTERNOON.
* MIXING HEIGHT..........3600 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...53-57
RIDGES/UPR SLOPES....53-56
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...75-90 PERCENT
RIDGES/UPR SLOPES....57-72 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...DOWNSLOPE/DOWNVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...81-89
RIDGES/UPR SLOPES....67-75
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...30-38 PERCENT
RIDGES/UPR SLOPES....39-49 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 1 TO 3 MPH...BECOMING
NORTHWEST 5 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING NORTHWEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ404-211315-
NORTHERN COASTAL HUMBOLDT-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............CLOUDY. PATCHY FOG IN THE LATE EVENING AND
OVERNIGHT.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-54
RIDGES/UPR SLOPES....AROUND 52
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...94-100 PERCENT
RIDGES/UPR SLOPES....95 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING LIGHT WINDS 2 TO 4 MPH.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............CLOUDY. PATCHY FOG IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...61-66
RIDGES/UPR SLOPES....AROUND 57
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...78-91 PERCENT
RIDGES/UPR SLOPES....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..........1400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............CLOUDY. PATCHY FOG IN THE LATE EVENING AND
OVERNIGHT.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-53
RIDGES/UPR SLOPES....AROUND 52
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...95-100 PERCENT
RIDGES/UPR SLOPES....95 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH IN THE
EVENING...BECOMING LIGHT WINDS 2 TO 4 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...62-66
RIDGES/UPR SLOPES....AROUND 58
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...73-87 PERCENT
RIDGES/UPR SLOPES....87 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 10 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 10 MPH.
* MIXING HEIGHT..........1800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ405-211315-
NORTHWESTERN INTERIOR HUMBOLDT INCLUDING THE BALD HILLS-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-56
RIDGES/UPR SLOPES....50-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...80-95 PERCENT
RIDGES/UPR SLOPES....71-86 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...67-75
RIDGES/UPR SLOPES....62-70
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...69-84 PERCENT
RIDGES/UPR SLOPES....67-82 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH...BECOMING WEST 5
MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH...BECOMING NORTHWEST 5
MPH IN THE AFTERNOON.
* MIXING HEIGHT..........1300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING 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...50-55
RIDGES/UPR SLOPES....50-54
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...82-97 PERCENT
RIDGES/UPR SLOPES....77-92 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* 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....61-68
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...67-82 PERCENT
RIDGES/UPR SLOPES....66-81 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING NORTHWEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........1900 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ406-211315-
EASTERN INTERIOR HUMBOLDT INCLUDING WILLOW CREEK AND HOOPA-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...53-56
RIDGES/UPR SLOPES....54-58
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...70-85 PERCENT
RIDGES/UPR SLOPES....50-60 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...DOWNSLOPE/DOWNVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...80-88
RIDGES/UPR SLOPES....66-74
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...39-49 PERCENT
RIDGES/UPR SLOPES....45-55 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING NORTHWEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........2100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-55
RIDGES/UPR SLOPES....52-55
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...80-95 PERCENT
RIDGES/UPR SLOPES....62-77 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 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...77-85
RIDGES/UPR SLOPES....63-71
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...40-50 PERCENT
RIDGES/UPR SLOPES....49-59 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 1 TO 3 MPH...BECOMING
NORTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING NORTHWEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........2800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ407-211315-
SOUTHWESTERN HUMBOLDT INCLUDING THE KING RANGE AND THE EEL RIVER
VALLEY-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-54
RIDGES/UPR SLOPES....50-54
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...84-99 PERCENT
RIDGES/UPR SLOPES....81-96 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 10 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...71-79
RIDGES/UPR SLOPES....59-67
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...60-70 PERCENT
RIDGES/UPR SLOPES....76-91 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 10 MPH.
* MIXING HEIGHT..........1700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-54
RIDGES/UPR SLOPES....50-54
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...85-100 PERCENT
RIDGES/UPR SLOPES....81-96 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 10 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 6 TO 13 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...70-78
RIDGES/UPR SLOPES....58-66
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...56-66 PERCENT
RIDGES/UPR SLOPES....74-89 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 11 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 6 TO 13 MPH.
* MIXING HEIGHT..........2000 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ408-211315-
SOUTHEASTERN INTERIOR HUMBOLDT INCLUDING KNEELAND AND ALDERPOINT-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-55
RIDGES/UPR SLOPES....51-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...82-97 PERCENT
RIDGES/UPR SLOPES....66-81 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING LIGHT WINDS 2 TO 4 MPH.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...70-78
RIDGES/UPR SLOPES....64-72
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...69-79 PERCENT
RIDGES/UPR SLOPES....74-89 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING NORTHWEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........2000 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-54
RIDGES/UPR SLOPES....49-55
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...85-100 PERCENT
RIDGES/UPR SLOPES....75-90 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...69-77
RIDGES/UPR SLOPES....62-70
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...66-76 PERCENT
RIDGES/UPR SLOPES....70-85 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........2500 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ409-211315-
NORTHWESTERN TRINITY INCLUDING SALYER AND BIG BAR-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-58
RIDGES/UPR SLOPES....56-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...56-71 PERCENT
RIDGES/UPR SLOPES....35-45 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...DOWNSLOPE/DOWNVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 MPH...SHIFTING TO THE
EAST AFTER MIDNIGHT.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...83-91
RIDGES/UPR SLOPES....72-80
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...27-35 PERCENT
RIDGES/UPR SLOPES....24-32 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....EAST WINDS 5 MPH...SHIFTING TO THE WEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........6800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-56
RIDGES/UPR SLOPES....53-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...78-93 PERCENT
RIDGES/UPR SLOPES....52-62 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...79-87
RIDGES/UPR SLOPES....68-76
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...31-39 PERCENT
RIDGES/UPR SLOPES....31-39 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 6 MPH...SHIFTING TO THE
WEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ410-211315-
NORTHEASTERN TRINITY INCLUDING TRINITY LAKE-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-60
RIDGES/UPR SLOPES....52-59
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...48-58 PERCENT
RIDGES/UPR SLOPES....31-41 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...84-92
RIDGES/UPR SLOPES....71-79
* 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.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING SOUTH 5 MPH
IN THE AFTERNOON.
* MIXING HEIGHT..........9200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...53-57
RIDGES/UPR SLOPES....49-56
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...66-77 PERCENT
RIDGES/UPR SLOPES....53-63 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...DOWNSLOPE/DOWNVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...82-90
RIDGES/UPR SLOPES....68-76
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...20-26 PERCENT
RIDGES/UPR SLOPES....25-33 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 MPH...SHIFTING TO THE WEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........8300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ411-211315-
EASTERN TRINITY INCLUDING WEAVERVILLE AND HAYFORK-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-58
RIDGES/UPR SLOPES....56-60
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...52-62 PERCENT
RIDGES/UPR SLOPES....41-51 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...87-93
RIDGES/UPR SLOPES....76-84
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...16-21 PERCENT
RIDGES/UPR SLOPES....18-26 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING NORTH 5 MPH
IN THE AFTERNOON.
* MIXING HEIGHT..........8800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...49-55
RIDGES/UPR SLOPES....53-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...70-85 PERCENT
RIDGES/UPR SLOPES....59-74 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 MPH IN THE EVENING...BECOMING
DOWNSLOPE/DOWNVALLEY 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...85-90
RIDGES/UPR SLOPES....72-80
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...21-26 PERCENT
RIDGES/UPR SLOPES....24-30 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....NORTHWEST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........6800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ412-211315-
SOUTHERN TRINITY INCLUDING RUTH LAKE AND THE YOLLA BOLLYS-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-57
RIDGES/UPR SLOPES....50-58
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...60-75 PERCENT
RIDGES/UPR SLOPES....50-60 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY THEN
BECOMING PARTLY CLOUDY THEN BECOMING
MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...80-88
RIDGES/UPR SLOPES....74-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...32-40 PERCENT
RIDGES/UPR SLOPES....28-36 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..........7100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-57
RIDGES/UPR SLOPES....50-58
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...68-83 PERCENT
RIDGES/UPR SLOPES....60-75 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...78-86
RIDGES/UPR SLOPES....71-79
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...36-46 PERCENT
RIDGES/UPR SLOPES....35-45 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 NORTHWEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........7200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ413-211315-
COASTAL MENDOCINO-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY FOG IN THE LATE
EVENING AND EARLY MORNING. AREAS OF FOG
LATE IN THE NIGHT.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-53
RIDGES/UPR SLOPES....48-54
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...91-100 PERCENT
RIDGES/UPR SLOPES....85-100 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING LIGHT WINDS 2 TO 4 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
AREAS OF FOG EARLY IN THE MORNING. PATCHY
FOG LATE IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...65-73
RIDGES/UPR SLOPES....66-72
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...67-82 PERCENT
RIDGES/UPR SLOPES....59-74 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........1400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING MOSTLY CLOUDY. PATCHY FOG IN
THE LATE EVENING AND OVERNIGHT.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-53
RIDGES/UPR SLOPES....48-55
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...90-100 PERCENT
RIDGES/UPR SLOPES....85-100 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING SUNNY. PATCHY FOG IN THE
MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...64-72
RIDGES/UPR SLOPES....67-75
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...64-79 PERCENT
RIDGES/UPR SLOPES....62-72 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....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........1500 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ414-211315-
NORTHERN INTERIOR MENDOCINO INCLUDING LEGGETT AND WILLITS-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...48-55
RIDGES/UPR SLOPES....50-58
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...73-88 PERCENT
RIDGES/UPR SLOPES....70-85 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY THEN
BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...79-87
RIDGES/UPR SLOPES....72-80
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...36-46 PERCENT
RIDGES/UPR SLOPES....46-56 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..........3300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
PATCHY FOG EARLY IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...47-54
RIDGES/UPR SLOPES....49-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...82-97 PERCENT
RIDGES/UPR SLOPES....74-89 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY. PATCHY FOG EARLY IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...79-87
RIDGES/UPR SLOPES....71-79
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...39-49 PERCENT
RIDGES/UPR SLOPES....44-54 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....NORTH WINDS 5 TO 6 MPH...SHIFTING TO THE
NORTHWEST IN THE AFTERNOON.
* MIXING HEIGHT..........3400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ415-211315-
NORTHEASTERN INTERIOR MENDOCINO INCLUDING COVELO-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-59
RIDGES/UPR SLOPES....55-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...54-69 PERCENT
RIDGES/UPR SLOPES....42-52 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY THEN
BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...84-92
RIDGES/UPR SLOPES....74-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...21-27 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....VARIABLE 2 TO 4 MPH...BECOMING WEST 5 TO 6
MPH IN THE AFTERNOON.
* MIXING HEIGHT..........6300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-59
RIDGES/UPR SLOPES....54-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...62-77 PERCENT
RIDGES/UPR SLOPES....49-59 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 6 MPH...SHIFTING TO
THE NORTHEAST 5 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...83-91
RIDGES/UPR SLOPES....73-81
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...24-32 PERCENT
RIDGES/UPR SLOPES....26-34 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..........6300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ416-211315-
SOUTHEASTERN INTERIOR MENDOCINO INCLUDING UKIAH AND POTTER VALLEY-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-59
RIDGES/UPR SLOPES....56-62
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...66-81 PERCENT
RIDGES/UPR SLOPES....54-69 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 MPH IN THE EVENING...BECOMING
LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...82-90
RIDGES/UPR SLOPES....75-83
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...28-36 PERCENT
RIDGES/UPR SLOPES....34-42 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
SOUTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTH WINDS 5 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........3900 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-58
RIDGES/UPR SLOPES....56-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...71-86 PERCENT
RIDGES/UPR SLOPES....58-73 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...81-89
RIDGES/UPR SLOPES....75-83
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...32-42 PERCENT
RIDGES/UPR SLOPES....36-46 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....NORTH WINDS 5 MPH...SHIFTING TO THE WEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........3500 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ417-211315-
SOUTHWESTERN INTERIOR MENDOCINO INCLUDING BOONVILLE-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY FOG LATE IN THE
NIGHT.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-56
RIDGES/UPR SLOPES....52-58
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...79-94 PERCENT
RIDGES/UPR SLOPES....72-87 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING LIGHT WINDS 2 TO 4 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING SUNNY THEN BECOMING PARTLY
CLOUDY. PATCHY FOG IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...75-83
RIDGES/UPR SLOPES....72-80
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...50-60 PERCENT
RIDGES/UPR SLOPES....54-64 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
WEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING WEST 5 TO 6
MPH IN THE AFTERNOON.
* MIXING HEIGHT..........2100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY. PATCHY FOG EARLY IN THE
MORNING.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-56
RIDGES/UPR SLOPES....51-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...80-95 PERCENT
RIDGES/UPR SLOPES....74-89 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY. PATCHY
FOG IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...73-81
RIDGES/UPR SLOPES....71-79
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...51-61 PERCENT
RIDGES/UPR SLOPES....54-64 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........2100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ418-211315-
NORTHERN LAKE INCLUDING GRAVELLY VALLEY-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-60
RIDGES/UPR SLOPES....57-63
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...55-65 PERCENT
RIDGES/UPR SLOPES....38-48 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING NORTHEAST 5
MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...88-93
RIDGES/UPR SLOPES....74-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...18-25 PERCENT
RIDGES/UPR SLOPES....21-29 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
SOUTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....EAST WINDS 5 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY 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...57-72 PERCENT
RIDGES/UPR SLOPES....44-54 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....WEST WINDS 5 TO 6 MPH...SHIFTING TO THE
NORTH 5 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...88-92
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...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
SOUTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTH WINDS 5 MPH...SHIFTING TO THE SOUTH
5 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5900 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ419-211315-
EASTERN LAKE INCLUDING CLEARLAKE AND MIDDLETOWN-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...53-61
RIDGES/UPR SLOPES....57-64
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...66-81 PERCENT
RIDGES/UPR SLOPES....53-63 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....VARIABLE 1 TO 3 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...85-91
RIDGES/UPR SLOPES....81-85
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...26-34 PERCENT
RIDGES/UPR SLOPES....24-32 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....NORTHEAST WINDS 5 MPH...SHIFTING TO THE
SOUTH 5 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5600 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-59
RIDGES/UPR SLOPES....55-63
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...68-83 PERCENT
RIDGES/UPR SLOPES....58-70 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 IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...87-91
RIDGES/UPR SLOPES....81-85
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...27-35 PERCENT
RIDGES/UPR SLOPES....25-33 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 1 TO 3 MPH...BECOMING
SOUTHEAST 5 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTH WINDS 5 MPH...SHIFTING TO THE
SOUTHEAST 5 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ420-211315-
SOUTHERN LAKE INCLUDING COBB AND KONOCTI-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...53-61
RIDGES/UPR SLOPES....59-63
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...64-79 PERCENT
RIDGES/UPR SLOPES....56-66 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....WEST WINDS 5 MPH IN THE EVENING...BECOMING
LIGHT WINDS 2 TO 4 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...84-87
RIDGES/UPR SLOPES....74-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...32-40 PERCENT
RIDGES/UPR SLOPES....34-44 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 4 MPH...BECOMING SOUTHWEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-60
RIDGES/UPR SLOPES....57-62
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...65-80 PERCENT
RIDGES/UPR SLOPES....57-70 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....WEST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...85-89
RIDGES/UPR SLOPES....76-83
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...31-39 PERCENT
RIDGES/UPR SLOPES....34-44 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
SOUTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTH WINDS 5 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ421-211315-
WESTERN LAKE INCLUDING LAKEPORT-
135 PM PDT SUN SEP 20 2026
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-61
RIDGES/UPR SLOPES....58-64
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...62-77 PERCENT
RIDGES/UPR SLOPES....50-60 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 1 TO 3 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 6 MPH...SHIFTING TO
THE NORTH 5 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...83-88
RIDGES/UPR SLOPES....79-83
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...28-36 PERCENT
RIDGES/UPR SLOPES....27-33 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
SOUTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....EAST WINDS 5 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5000 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
MONDAY 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...68-83 PERCENT
RIDGES/UPR SLOPES....53-68 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TUESDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...83-89
RIDGES/UPR SLOPES....79-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...29-37 PERCENT
RIDGES/UPR SLOPES....31-37 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
SOUTHWEST 5 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTH WINDS 5 MPH...SHIFTING TO THE WEST 5
TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
EXTENDED FORECAST FOR DAYS 3 THROUGH 5
..NORTHWEST CALIFORNIA COAST
WEDNESDAY
PARTLY CLOUDY. LOWS NEAR 50. HIGHS 64 TO 71. NORTH
WINDS 5 MPH.
THURSDAY
MOSTLY CLOUDY. LOWS 50 TO 55. HIGHS 64 TO 70. NORTH
WINDS 5 MPH.
FRIDAY
MOSTLY CLOUDY WITH CHANCE OF RAIN. LOWS 51 TO 56. HIGHS
61 TO 67. NORTH WINDS 5 MPH.
..NORTHWEST CALIFORNIA INTERIOR
WEDNESDAY
MOSTLY CLEAR. LOWS 51 TO 59. HIGHS 79 TO 90.
NORTHWEST WINDS 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 54 TO 62. HIGHS 78 TO 89.
NORTHWEST WINDS 5 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 57. HIGHS 70 TO 81. NORTHWEST
WINDS 5 MPH.
6 TO 10 DAY OUTLOOK
SATURDAY SEPTEMBER 26 THROUGH WEDNESDAY SEPTEMBER 30, 2026...
FOR NW CALIF...NEAR NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
VISIT US AT WWW.WEATHER.GOV/EUREKA
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