147
FNUS56 KEKA 310807
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE EUREKA CA
107 AM PDT FRI JUL 31 2026
...GUSTY WINDS AND LOW RH THROUGH THE WEEKEND AND EARLY NEXT
WEEK...
DISCUSSION
DRY CONDITIONS ARE EXPECTED FOR THE NEXT WEEK.
ONSHORE WINDS WILL BECOME STRONG ON SATURDAY, BUT A SMALL
INCREASE IN AFTERNOON RELATIVE HUMIDITY WILL KEEP CONDITIONS FROM
BECOMING CRITICAL. LOWER RELATIVE HUMIDITY AND HOTTER
TEMPERATURES ARE EXPECTED EARLY NEXT WEEK WITH WIDESPREAD 100
DEGREE WEATHER ACROSS THE INTERIOR. NORTHEASTERLY WINDS WILL BE
GUSTY ON THE RIDGES OF HUMBOLDT, TRINITY, DEL NORTE, AND SISKIYOU
COUNTIES DURING THE OVERNIGHT HOURS SATURDAY NIGHT THROUGH MONDAY
NIGHT.
CAZ401-010115-
COASTAL DEL NORTE-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...65-70
RIDGES/UPR SLOPES....65-71
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...67-77 PERCENT
RIDGES/UPR SLOPES....67-77 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..........1500 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............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...93-100 PERCENT
RIDGES/UPR SLOPES....92-100 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 MPH IN THE EVENING...BECOMING
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.
SATURDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
PATCHY FOG EARLY IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...65-71
RIDGES/UPR SLOPES....65-71
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...66-79 PERCENT
RIDGES/UPR SLOPES....70-80 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 3 TO 7 MPH...BECOMING
NORTHWEST 8 TO 15 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....VARIABLE 2 TO 5 MPH...BECOMING NORTHWEST 6
TO 10 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........1800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...53-56
RIDGES/UPR SLOPES....51-54
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...80-94 PERCENT
RIDGES/UPR SLOPES....87-97 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 10 TO 17 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 10 TO 17 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ402-010115-
INTERIOR DEL NORTE INCLUDING THE SMITH RIVER VALLEY-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...74-82
RIDGES/UPR SLOPES....71-79
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...60-70 PERCENT
RIDGES/UPR SLOPES....57-67 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....SOUTH WINDS 5 TO 6 MPH...SHIFTING TO THE
WEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........2200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR THEN BECOMING MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-54
RIDGES/UPR SLOPES....52-56
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...79-94 PERCENT
RIDGES/UPR SLOPES....65-80 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 6 MPH...SHIFTING TO
THE NORTH 5 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...73-81
RIDGES/UPR SLOPES....67-75
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...64-74 PERCENT
RIDGES/UPR SLOPES....60-70 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 TO 8 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........3500 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-54
RIDGES/UPR SLOPES....52-56
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...77-90 PERCENT
RIDGES/UPR SLOPES....62-77 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH...SHIFTING TO
THE NORTHEAST 5 TO 9 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....NORTHWEST WINDS 6 TO 10 MPH...SHIFTING TO
THE NORTHEAST 6 TO 13 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ403-010115-
NORTHEASTERN INTERIOR HUMBOLDT AND SOUTHWESTERN SISKIYOU
INCLUDING ORLEANS-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...91-99
RIDGES/UPR SLOPES....77-85
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...20-28 PERCENT
RIDGES/UPR SLOPES....29-37 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 SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4500 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............CLEAR THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-58
RIDGES/UPR SLOPES....54-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...65-80 PERCENT
RIDGES/UPR SLOPES....49-59 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 IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...86-94
RIDGES/UPR SLOPES....72-80
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...27-35 PERCENT
RIDGES/UPR SLOPES....35-43 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....VARIABLE 2 TO 5 MPH...BECOMING WEST 5 TO 9
MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-57
RIDGES/UPR SLOPES....53-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...66-81 PERCENT
RIDGES/UPR SLOPES....54-64 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 8 MPH...SHIFTING TO THE
NORTH 5 TO 6 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....NORTHWEST WINDS 6 TO 9 MPH...SHIFTING TO
THE NORTHEAST 5 TO 9 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ404-010115-
NORTHERN COASTAL HUMBOLDT-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
PATCHY FOG EARLY IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...66-70
RIDGES/UPR SLOPES....AROUND 64
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...63-78 PERCENT
RIDGES/UPR SLOPES....73 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 9 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........1800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY DENSE FOG IN THE
LATE EVENING AND OVERNIGHT.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-55
RIDGES/UPR SLOPES....AROUND 54
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...93-100 PERCENT
RIDGES/UPR SLOPES....93 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...66-70
RIDGES/UPR SLOPES....AROUND 64
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...69-84 PERCENT
RIDGES/UPR SLOPES....80 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 6 TO 13 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 6 TO 13 MPH.
* MIXING HEIGHT..........2400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-55
RIDGES/UPR SLOPES....AROUND 54
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...90-100 PERCENT
RIDGES/UPR SLOPES....87 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 8 TO 15 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 8 TO 15 MPH.
* MIXING HEIGHT..........500 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ405-010115-
NORTHWESTERN INTERIOR HUMBOLDT INCLUDING THE BALD HILLS-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...73-81
RIDGES/UPR SLOPES....70-78
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...58-68 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....WEST WINDS 5 TO 7 MPH.
* MIXING HEIGHT..........1700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
PATCHY FOG EARLY IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-54
RIDGES/UPR SLOPES....50-55
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...82-97 PERCENT
RIDGES/UPR SLOPES....67-82 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 1
TO 3 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 6 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...70-78
RIDGES/UPR SLOPES....66-74
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...63-78 PERCENT
RIDGES/UPR SLOPES....60-75 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...LIGHT WINDS 2 TO 5 MPH...BECOMING
NORTHWEST 6 TO 10 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 10 MPH.
* MIXING HEIGHT..........2500 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY. PATCHY FOG EARLY IN THE
MORNING.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-54
RIDGES/UPR SLOPES....50-55
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...83-98 PERCENT
RIDGES/UPR SLOPES....72-87 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 11 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ406-010115-
EASTERN INTERIOR HUMBOLDT INCLUDING WILLOW CREEK AND HOOPA-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...86-94
RIDGES/UPR SLOPES....74-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...30-38 PERCENT
RIDGES/UPR SLOPES....35-45 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHEAST WINDS 5 TO 6 MPH...SHIFTING TO
THE WEST 5 TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........2400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-55
RIDGES/UPR SLOPES....53-56
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...70-85 PERCENT
RIDGES/UPR SLOPES....51-61 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...81-89
RIDGES/UPR SLOPES....68-76
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...39-49 PERCENT
RIDGES/UPR SLOPES....44-54 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 5 MPH...BECOMING
NORTHWEST 6 TO 10 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........2900 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-55
RIDGES/UPR SLOPES....54-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...76-91 PERCENT
RIDGES/UPR SLOPES....58-73 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 11 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 7 TO 14 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ407-010115-
SOUTHWESTERN HUMBOLDT INCLUDING THE KING RANGE AND THE EEL RIVER
VALLEY-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...79-87
RIDGES/UPR SLOPES....70-78
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...43-53 PERCENT
RIDGES/UPR SLOPES....60-70 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 9 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 6 TO 13 MPH.
* MIXING HEIGHT..........2200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-56
RIDGES/UPR SLOPES....55-59
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...78-93 PERCENT
RIDGES/UPR SLOPES....70-85 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 9 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 9 TO 16 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...76-84
RIDGES/UPR SLOPES....67-75
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...53-63 PERCENT
RIDGES/UPR SLOPES....69-79 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 10 TO 17 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 11 TO 18 MPH.
* MIXING HEIGHT..........2400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-56
RIDGES/UPR SLOPES....54-58
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...78-93 PERCENT
RIDGES/UPR SLOPES....65-80 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 13 TO 23 MPH.
RIDGES/UPR SLOPES....BREEZY. NORTH WINDS 18 TO 28 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ408-010115-
SOUTHEASTERN INTERIOR HUMBOLDT INCLUDING KNEELAND AND ALDERPOINT-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...77-85
RIDGES/UPR SLOPES....69-77
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...54-64 PERCENT
RIDGES/UPR SLOPES....62-72 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........2100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-55
RIDGES/UPR SLOPES....49-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...80-95 PERCENT
RIDGES/UPR SLOPES....62-77 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...74-82
RIDGES/UPR SLOPES....67-75
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...61-71 PERCENT
RIDGES/UPR SLOPES....69-79 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 6 TO 13 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 6 TO 13 MPH.
* MIXING HEIGHT..........2700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-55
RIDGES/UPR SLOPES....48-55
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...84-99 PERCENT
RIDGES/UPR SLOPES....69-84 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 6 TO 13 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 8 TO 15 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ409-010115-
NORTHWESTERN TRINITY INCLUDING SALYER AND BIG BAR-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...90-98
RIDGES/UPR SLOPES....79-87
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...22-30 PERCENT
RIDGES/UPR SLOPES....22-30 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 5 MPH...BECOMING
NORTHWEST 5 TO 8 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 7 MPH...SHIFTING TO
THE SOUTHWEST 5 TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-57
RIDGES/UPR SLOPES....54-60
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...62-77 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 8 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...84-92
RIDGES/UPR SLOPES....74-82
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...27-35 PERCENT
RIDGES/UPR SLOPES....27-35 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 3 TO 6 MPH...BECOMING
NORTHWEST 7 TO 11 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........4800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-56
RIDGES/UPR SLOPES....53-59
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...71-86 PERCENT
RIDGES/UPR SLOPES....53-63 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 6 TO 13 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 8 TO 15 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ410-010115-
NORTHEASTERN TRINITY INCLUDING TRINITY LAKE-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...92-100
RIDGES/UPR SLOPES....78-86
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...13-18 PERCENT
RIDGES/UPR SLOPES....17-25 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....SOUTH WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........6900 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...59-63
RIDGES/UPR SLOPES....55-62
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...50-60 PERCENT
RIDGES/UPR SLOPES....39-47 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 7 MPH...SHIFTING TO
THE WEST 5 TO 6 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...91-99
RIDGES/UPR SLOPES....76-84
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...15-20 PERCENT
RIDGES/UPR SLOPES....19-27 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....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........8200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...AROUND 60
RIDGES/UPR SLOPES....51-59
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...55-65 PERCENT
RIDGES/UPR SLOPES....45-55 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 6 TO 13 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 6 TO 13 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ411-010115-
EASTERN TRINITY INCLUDING WEAVERVILLE AND HAYFORK-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...95-102
RIDGES/UPR SLOPES....83-91
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...13-18 PERCENT
RIDGES/UPR SLOPES....15-22 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....VARIABLE 2 TO 4 MPH...BECOMING SOUTHWEST 5
TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........7200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-60
RIDGES/UPR SLOPES....55-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...53-63 PERCENT
RIDGES/UPR SLOPES....41-51 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....WEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...90-97
RIDGES/UPR SLOPES....78-86
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...18-23 PERCENT
RIDGES/UPR SLOPES....21-29 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 3 TO 6 MPH...BECOMING
WEST 6 TO 11 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........5700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...50-58
RIDGES/UPR SLOPES....53-58
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...65-80 PERCENT
RIDGES/UPR SLOPES....53-68 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 6 TO 13 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 8 TO 15 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ412-010115-
SOUTHERN TRINITY INCLUDING RUTH LAKE AND THE YOLLA BOLLYS-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...87-95
RIDGES/UPR SLOPES....80-88
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...22-30 PERCENT
RIDGES/UPR SLOPES....23-31 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....EAST WINDS 5 TO 6 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...53-57
RIDGES/UPR SLOPES....53-61
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...60-75 PERCENT
RIDGES/UPR SLOPES....51-61 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..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...85-93
RIDGES/UPR SLOPES....78-86
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...26-34 PERCENT
RIDGES/UPR SLOPES....28-36 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 3 TO 6 MPH...BECOMING
NORTHWEST 6 TO 11 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........5400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-56
RIDGES/UPR SLOPES....51-59
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...68-83 PERCENT
RIDGES/UPR SLOPES....56-71 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 12 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 6 TO 13 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ413-010115-
COASTAL MENDOCINO-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY. PATCHY FOG EARLY IN THE MORNING.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...68-76
RIDGES/UPR SLOPES....71-79
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...59-74 PERCENT
RIDGES/UPR SLOPES....54-64 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........1700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-54
RIDGES/UPR SLOPES....51-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...78-93 PERCENT
RIDGES/UPR SLOPES....72-87 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 10 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...71-79
RIDGES/UPR SLOPES....75-83
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...60-70 PERCENT
RIDGES/UPR SLOPES....49-59 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 7 TO 14 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 7 TO 14 MPH.
* MIXING HEIGHT..........1500 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-55
RIDGES/UPR SLOPES....51-57
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...77-92 PERCENT
RIDGES/UPR SLOPES....73-88 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 8 TO 15 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 10 TO 17 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ414-010115-
NORTHERN INTERIOR MENDOCINO INCLUDING LEGGETT AND WILLITS-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...86-94
RIDGES/UPR SLOPES....79-87
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...31-39 PERCENT
RIDGES/UPR SLOPES....33-41 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....WEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........2800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-57
RIDGES/UPR SLOPES....52-60
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...67-82 PERCENT
RIDGES/UPR SLOPES....58-73 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...88-96
RIDGES/UPR SLOPES....80-88
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...30-38 PERCENT
RIDGES/UPR SLOPES....31-39 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 11 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........3700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...51-56
RIDGES/UPR SLOPES....51-59
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...69-84 PERCENT
RIDGES/UPR SLOPES....61-76 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTH WINDS 6 TO 13 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 8 TO 15 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ415-010115-
NORTHEASTERN INTERIOR MENDOCINO INCLUDING COVELO-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...91-99
RIDGES/UPR SLOPES....81-89
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...17-24 PERCENT
RIDGES/UPR SLOPES....18-26 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....WEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........5100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-63
RIDGES/UPR SLOPES....58-65
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...53-68 PERCENT
RIDGES/UPR SLOPES....43-53 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 7 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...91-99
RIDGES/UPR SLOPES....81-89
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...18-26 PERCENT
RIDGES/UPR SLOPES....19-27 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 5 MPH...BECOMING
NORTHWEST 5 TO 10 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........5800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...55-63
RIDGES/UPR SLOPES....58-66
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...54-69 PERCENT
RIDGES/UPR SLOPES....43-53 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 6 TO 11 MPH...SHIFTING TO
THE NORTH 5 TO 11 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....NORTHWEST WINDS 6 TO 10 MPH...SHIFTING TO
THE NORTH 5 TO 12 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........300 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ416-010115-
SOUTHEASTERN INTERIOR MENDOCINO INCLUDING UKIAH AND POTTER VALLEY-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...88-96
RIDGES/UPR SLOPES....83-91
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...24-32 PERCENT
RIDGES/UPR SLOPES....25-33 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 9 MPH.
RIDGES/UPR SLOPES....WEST WINDS 5 TO 10 MPH.
* MIXING HEIGHT..........3100 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-60
RIDGES/UPR SLOPES....58-66
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...59-74 PERCENT
RIDGES/UPR SLOPES....47-57 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 9 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...88-96
RIDGES/UPR SLOPES....83-91
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...27-35 PERCENT
RIDGES/UPR SLOPES....28-36 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 12 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 12 MPH.
* MIXING HEIGHT..........3400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...54-61
RIDGES/UPR SLOPES....59-67
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...59-74 PERCENT
RIDGES/UPR SLOPES....49-59 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 12 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 6 TO 13 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ417-010115-
SOUTHWESTERN INTERIOR MENDOCINO INCLUDING BOONVILLE-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...79-87
RIDGES/UPR SLOPES....77-85
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...40-50 PERCENT
RIDGES/UPR SLOPES....42-52 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........1800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-58
RIDGES/UPR SLOPES....52-60
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...70-85 PERCENT
RIDGES/UPR SLOPES....64-79 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............PARTLY CLOUDY THEN BECOMING SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...81-89
RIDGES/UPR SLOPES....79-87
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...37-47 PERCENT
RIDGES/UPR SLOPES....39-49 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 11 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 12 MPH.
* MIXING HEIGHT..........2000 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...52-58
RIDGES/UPR SLOPES....52-59
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...72-87 PERCENT
RIDGES/UPR SLOPES....65-80 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 12 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 6 TO 13 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ418-010115-
NORTHERN LAKE INCLUDING GRAVELLY VALLEY-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...95-101
RIDGES/UPR SLOPES....82-90
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...14-21 PERCENT
RIDGES/UPR SLOPES....16-23 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........4800 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...59-67
RIDGES/UPR SLOPES....63-70
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...43-53 PERCENT
RIDGES/UPR SLOPES....33-43 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 7 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 7 MPH...SHIFTING TO
THE NORTH AFTER MIDNIGHT.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...96-103
RIDGES/UPR SLOPES....84-92
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...15-22 PERCENT
RIDGES/UPR SLOPES....18-25 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 5 MPH...BECOMING
WEST 5 TO 8 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTH WINDS 5 MPH...SHIFTING TO THE WEST 5
TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........6600 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...59-67
RIDGES/UPR SLOPES....64-71
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...42-52 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..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ419-010115-
EASTERN LAKE INCLUDING CLEARLAKE AND MIDDLETOWN-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...96-100
RIDGES/UPR SLOPES....90-95
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...14-20 PERCENT
RIDGES/UPR SLOPES....15-21 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....NORTH WINDS 5 TO 6 MPH...SHIFTING TO THE
SOUTHWEST 5 TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5700 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...59-65
RIDGES/UPR SLOPES....62-70
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...49-59 PERCENT
RIDGES/UPR SLOPES....40-50 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...98-103
RIDGES/UPR SLOPES....91-98
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...15-21 PERCENT
RIDGES/UPR SLOPES....16-22 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...UPSLOPE/UPVALLEY 2 TO 5 MPH...BECOMING
WEST 5 TO 9 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....NORTH WINDS 5 TO 6 MPH...SHIFTING TO THE
WEST 5 TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........7000 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...61-66
RIDGES/UPR SLOPES....64-72
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...45-55 PERCENT
RIDGES/UPR SLOPES....37-47 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 10 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 10 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ420-010115-
SOUTHERN LAKE INCLUDING COBB AND KONOCTI-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...94-99
RIDGES/UPR SLOPES....86-93
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...18-24 PERCENT
RIDGES/UPR SLOPES....18-26 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....NORTH WINDS 5 MPH...SHIFTING TO THE WEST 5
TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...60-65
RIDGES/UPR SLOPES....65-70
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...44-54 PERCENT
RIDGES/UPR SLOPES....34-44 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...WEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....WEST WINDS 5 TO 8 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...94-102
RIDGES/UPR SLOPES....88-95
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...18-24 PERCENT
RIDGES/UPR SLOPES....19-26 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 9 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........6200 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...60-65
RIDGES/UPR SLOPES....65-72
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...44-54 PERCENT
RIDGES/UPR SLOPES....36-46 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 10 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 12 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
CAZ421-010115-
WESTERN LAKE INCLUDING LAKEPORT-
107 AM PDT FRI JUL 31 2026
TODAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...91-97
RIDGES/UPR SLOPES....86-89
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...20-28 PERCENT
RIDGES/UPR SLOPES....21-26 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....NORTHWEST WINDS 5 TO 9 MPH.
* MIXING HEIGHT..........4400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...57-62
RIDGES/UPR SLOPES....59-66
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...53-68 PERCENT
RIDGES/UPR SLOPES....46-56 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 8 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 10 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* CHANCE LIGHTNING.......0%.
* MAX TEMPERATURE.......
VALLEYS/LWR SLOPES...91-98
RIDGES/UPR SLOPES....86-89
* MIN HUMIDITY.......
VALLEYS/LWR SLOPES...23-31 PERCENT
RIDGES/UPR SLOPES....24-29 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 11 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........5000 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
SATURDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* CHANCE LIGHTNING.......0%.
* MIN TEMPERATURE.......
VALLEYS/LWR SLOPES...57-62
RIDGES/UPR SLOPES....59-66
* MAX HUMIDITY.......
VALLEYS/LWR SLOPES...54-64 PERCENT
RIDGES/UPR SLOPES....46-56 PERCENT
* 20-FOOT WINDS...
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 12 MPH.
RIDGES/UPR SLOPES....NORTHWEST WINDS 7 TO 14 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CHC OF WETTING RAIN....0 PERCENT.
EXTENDED FORECAST FOR DAYS 3 THROUGH 5
..NORTHWEST CALIFORNIA COAST
SUNDAY
MOSTLY CLEAR. LOWS 51 TO 57. HIGHS 65 TO 74. NORTH
WINDS 5 MPH.
MONDAY
MOSTLY CLEAR. LOWS 53 TO 58. HIGHS 69 TO 80. NORTH
WINDS 5 MPH.
TUESDAY
MOSTLY CLEAR. LOWS IN THE 50S. HIGHS 68 TO 76. WINDS
GENERALLY LESS THAN 5 MPH.
..NORTHWEST CALIFORNIA INTERIOR
SUNDAY
CLEAR. LOWS 58 TO 66. HIGHS 88 TO 101. NORTHWEST WINDS
5 MPH.
MONDAY
CLEAR. LOWS 62 TO 70. HIGHS 93 TO 104. NORTH WINDS
5 MPH.
TUESDAY
CLEAR. LOWS 60 TO 68. HIGHS 91 TO 104. WEST WINDS
5 MPH.
6 TO 10 DAY OUTLOOK
WEDNESDAY AUGUST 5 THROUGH SUNDAY AUGUST 9, 2026...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
VISIT US AT WWW.WEATHER.GOV/EUREKA
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