937
FNUS56 KEKA 190842
FWFEKA
FIRE WEATHER PLANNING FORECAST FOR NORTHWEST CALIFORNIA
NATIONAL WEATHER SERVICE EUREKA CA
142 AM PDT THU MAR 19 2026
DISCUSSION.
A DOMINANT BLOCKING RIDGING PATTERN PROMOTING
UNSEASONABLY WARM AND DRY CONDITIONS PERSIST THROUGH FRIDAY.
WINDS WILL CONTINUE TO BE LIGHT TO MODERATE AND TERRAIN- DRIVEN
TODAY, WHILE HUMIDITY WILL CONTINUE TO BE UNSEASONABLY LOW WITH
MINS FROM 15 TO 35 PERCENT FOR THE INTERIOR. OVERNIGHT RH
RECOVERIES VALUES WILL CONTINUE TO BE LOWER THAN NORMAL WITH A
MIDSLOPE THERMAL BELT REMAINS THROUGH THE FRIDAY. WIND INCREASES
THIS WEEKEND. EXPECT BREEZY TO LOCALLY GUSTY W TO NW WINDS,
ESPECIALLY OVER THE COASTAL HEADLANDS, EXPOSED RIDGES AND THROUGH
THE CHANNELED TERRAIN. THIS UPTICK IN W-NW BREEZES WILL BRING A
PUSH OF MARINE MOISTURE ON SATURDAY. THIS WILL MODERATE THE RH'S,
ALTHOUGH AREAS FAR EAST WILL REMAIN WITH POCKETS OF LOW TO
MODERATE RH VALUES. COOLING EXPECTED THIS WEEKEND WITH A RETURN
OF RAIN BY MID OF NEXT WEEK.
CAZ201-200130-
NORTH COAST-
142 AM PDT THU MAR 19 2026
TODAY
* SKY/WEATHER...SUNNY. AREAS OF DENSE FOG IN THE MORNING. PATCHY
DENSE FOG EARLY IN THE AFTERNOON.
* MAX TEMPERATURE...72-82.
* MIN HUMIDITY...20-30 PERCENT.
* MIXING HEIGHT...2500 FT AGL.
* SNOW LEVEL...ABOVE 4300 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 MPH IN THE AFTERNOON.
RIDGES...............VARIABLE 1 TO 3 MPH.
TONIGHT
* SKY/WEATHER...PARTLY CLOUDY. PATCHY DENSE FOG.
* MIN TEMPERATURE...46-56.
* MAX HUMIDITY...70-85 PERCENT.
* MIXING HEIGHT...0 FT AGL.
* SNOW LEVEL...ABOVE 4300 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTH WINDS 5 MPH.
RIDGES...............NORTH WINDS 5 TO 8 MPH.
FRIDAY
* SKY/WEATHER...PARTLY CLOUDY. PATCHY DENSE FOG EARLY IN THE
MORNING.
* MAX TEMPERATURE...65-75.
* MIN HUMIDITY...35-45 PERCENT.
* MIXING HEIGHT...3500 FT AGL.
* SNOW LEVEL...ABOVE 4300 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTHWEST WINDS 5 TO 9 MPH.
RIDGES...............NORTHWEST WINDS 5 TO 9 MPH.
CAZ202-200130-
COASTAL MENDOCINO-
142 AM PDT THU MAR 19 2026
TODAY
* SKY/WEATHER...SUNNY. AREAS OF DENSE FOG IN THE MORNING. PATCHY
DENSE FOG EARLY IN THE AFTERNOON.
* MAX TEMPERATURE...73-83.
* MIN HUMIDITY...22-32 PERCENT.
* MIXING HEIGHT...1500 FT AGL.
* SNOW LEVEL...ABOVE 2200 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTHWEST WINDS 5 TO 9 MPH.
RIDGES...............NORTHWEST WINDS 5 TO 9 MPH.
TONIGHT
* SKY/WEATHER...PARTLY CLOUDY. PATCHY DENSE FOG IN THE LATE EVENING
AND OVERNIGHT.
* MIN TEMPERATURE...46-55.
* MAX HUMIDITY...69-84 PERCENT.
* MIXING HEIGHT...0 FT AGL.
* SNOW LEVEL...ABOVE 2200 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTH WINDS 5 TO 8 MPH.
RIDGES...............NORTH WINDS 5 TO 8 MPH.
FRIDAY
* SKY/WEATHER...PARTLY CLOUDY. PATCHY DENSE FOG IN THE MORNING.
* MAX TEMPERATURE...70-80.
* MIN HUMIDITY...30-40 PERCENT.
* MIXING HEIGHT...2300 FT AGL.
* SNOW LEVEL...ABOVE 2200 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTHWEST WINDS 5 TO 9 MPH.
RIDGES...............NORTHWEST WINDS 5 TO 9 MPH.
CAZ203-204-200130-
UPPER SMITH-LOWER MIDDLE KLAMATH-
142 AM PDT THU MAR 19 2026
TODAY
* SKY/WEATHER...SUNNY.
* MAX TEMPERATURE...70-80.
* MIN HUMIDITY...15-23 PERCENT.
* MIXING HEIGHT...4400 FT AGL.
* SNOW LEVEL...ABOVE 6000 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
SOUTHWEST 5 MPH IN THE AFTERNOON.
RIDGES...............SOUTHWEST WINDS 5 MPH.
TONIGHT
* SKY/WEATHER...MOSTLY CLEAR.
* MIN TEMPERATURE...50-58.
* MAX HUMIDITY...53-68 PERCENT.
* MIXING HEIGHT...0 FT AGL.
* SNOW LEVEL...ABOVE 6000 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......SOUTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES...............SOUTHWEST WINDS 5 MPH...SHIFTING TO THE
SOUTHEAST AFTER MIDNIGHT.
FRIDAY
* SKY/WEATHER...PARTLY CLOUDY THEN BECOMING SUNNY THEN BECOMING
PARTLY CLOUDY.
* MAX TEMPERATURE...68-78.
* MIN HUMIDITY...31-41 PERCENT.
* MIXING HEIGHT...6500 FT AGL.
* SNOW LEVEL...ABOVE 6000 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......UPSLOPE/UPVALLEY 2 TO 5 MPH...BECOMING
SOUTHWEST 5 TO 8 MPH IN THE AFTERNOON.
RIDGES...............VARIABLE 2 TO 4 MPH...BECOMING WEST 5 MPH
IN THE AFTERNOON.
CAZ211-212-200130-
HOOPA-VAN DUZEN/MAD RIVER-
142 AM PDT THU MAR 19 2026
TODAY
* SKY/WEATHER...SUNNY.
* MAX TEMPERATURE...74-84.
* MIN HUMIDITY...15-23 PERCENT.
* MIXING HEIGHT...3900 FT AGL.
* SNOW LEVEL...ABOVE 5800 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 TO 7 MPH IN THE AFTERNOON.
RIDGES...............VARIABLE 2 TO 4 MPH...BECOMING WEST 5 MPH
IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER...MOSTLY CLEAR.
* MIN TEMPERATURE...49-59.
* MAX HUMIDITY...62-77 PERCENT.
* MIXING HEIGHT...0 FT AGL.
* SNOW LEVEL...ABOVE 5800 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTHWEST WINDS 5 MPH IN THE
EVENING...BECOMING DOWNSLOPE/DOWNVALLEY 2
TO 4 MPH.
RIDGES...............NORTH WINDS 5 MPH.
FRIDAY
* SKY/WEATHER...SUNNY.
* MAX TEMPERATURE...72-82.
* MIN HUMIDITY...23-33 PERCENT.
* MIXING HEIGHT...5400 FT AGL.
* SNOW LEVEL...ABOVE 5800 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTHWEST WINDS 5 TO 8 MPH.
RIDGES...............NORTHWEST WINDS 5 TO 8 MPH.
CAZ283-200130-
TRINITY-
142 AM PDT THU MAR 19 2026
TODAY
* SKY/WEATHER...SUNNY.
* MAX TEMPERATURE...73-83.
* MIN HUMIDITY...14-22 PERCENT.
* MIXING HEIGHT...5100 FT AGL.
* SNOW LEVEL...ABOVE 8000 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......UPSLOPE/UPVALLEY 1 TO 3 MPH...BECOMING
WEST 5 MPH IN THE AFTERNOON.
RIDGES...............SOUTHWEST WINDS 5 MPH.
TONIGHT
* SKY/WEATHER...MOSTLY CLEAR.
* MIN TEMPERATURE...47-57.
* MAX HUMIDITY...51-61 PERCENT.
* MIXING HEIGHT...0 FT AGL.
* SNOW LEVEL...ABOVE 8000 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......WEST WINDS 5 MPH IN THE EVENING...BECOMING
DOWNSLOPE/DOWNVALLEY 2 TO 4 MPH.
RIDGES...............NORTHWEST WINDS 5 TO 8 MPH.
FRIDAY
* SKY/WEATHER...SUNNY.
* MAX TEMPERATURE...72-82.
* MIN HUMIDITY...18-26 PERCENT.
* MIXING HEIGHT...7300 FT AGL.
* SNOW LEVEL...ABOVE 8000 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......UPSLOPE/UPVALLEY 1 TO 3 MPH...BECOMING
WEST 5 MPH IN THE AFTERNOON.
RIDGES...............NORTH WINDS 5 MPH...SHIFTING TO THE WEST
IN THE AFTERNOON.
CAZ276-200130-
INTERIOR MENDOCINO-
142 AM PDT THU MAR 19 2026
TODAY
* SKY/WEATHER...SUNNY.
* MAX TEMPERATURE...81-91.
* MIN HUMIDITY...18-26 PERCENT.
* MIXING HEIGHT...3300 FT AGL.
* SNOW LEVEL...ABOVE 4000 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTHWEST WINDS 5 TO 8 MPH.
RIDGES...............NORTHWEST WINDS 5 TO 8 MPH.
TONIGHT
* SKY/WEATHER...MOSTLY CLEAR. PATCHY DENSE FOG EARLY IN THE
MORNING.
* MIN TEMPERATURE...50-60.
* MAX HUMIDITY...61-76 PERCENT.
* MIXING HEIGHT...0 FT AGL.
* SNOW LEVEL...ABOVE 4000 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTH WINDS 5 TO 8 MPH.
RIDGES...............NORTH WINDS 5 TO 8 MPH.
FRIDAY
* SKY/WEATHER...SUNNY. PATCHY DENSE FOG IN THE MORNING.
* MAX TEMPERATURE...81-91.
* MIN HUMIDITY...24-34 PERCENT.
* MIXING HEIGHT...5200 FT AGL.
* SNOW LEVEL...ABOVE 4000 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTHWEST WINDS 5 TO 8 MPH.
RIDGES...............NORTHWEST WINDS 5 TO 8 MPH.
CAZ277-200130-
W MENDOCINO NF/E MENDOCINO UNIT-
142 AM PDT THU MAR 19 2026
TODAY
* SKY/WEATHER...SUNNY.
* MAX TEMPERATURE...77-87.
* MIN HUMIDITY...14-22 PERCENT.
* MIXING HEIGHT...4300 FT AGL.
* SNOW LEVEL...ABOVE 7100 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 TO 7 MPH IN THE AFTERNOON.
RIDGES...............VARIABLE 2 TO 4 MPH...BECOMING NORTHWEST 5
MPH IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER...MOSTLY CLEAR.
* MIN TEMPERATURE...52-62.
* MAX HUMIDITY...51-61 PERCENT.
* MIXING HEIGHT...0 FT AGL.
* SNOW LEVEL...ABOVE 7100 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTH WINDS 5 TO 8 MPH.
RIDGES...............NORTH WINDS 5 TO 8 MPH.
FRIDAY
* SKY/WEATHER...SUNNY.
* MAX TEMPERATURE...78-88.
* MIN HUMIDITY...16-24 PERCENT.
* MIXING HEIGHT...6400 FT AGL.
* SNOW LEVEL...ABOVE 7100 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTH WINDS 5 MPH...SHIFTING TO THE WEST 5
TO 7 MPH IN THE AFTERNOON.
RIDGES...............NORTHEAST WINDS 5 MPH...SHIFTING TO THE
WEST IN THE AFTERNOON.
CAZ264-200130-
LAKE COUNTY PORTION OF LAKE/NAPA/SONOMA RU-
142 AM PDT THU MAR 19 2026
TODAY
* SKY/WEATHER...SUNNY.
* MAX TEMPERATURE...84-94.
* MIN HUMIDITY...18-26 PERCENT.
* MIXING HEIGHT...3700 FT AGL.
* SNOW LEVEL...ABOVE 4700 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 TO 7 MPH IN THE AFTERNOON.
RIDGES...............VARIABLE 2 TO 4 MPH...BECOMING NORTHWEST 5
MPH IN THE AFTERNOON.
TONIGHT
* SKY/WEATHER...MOSTLY CLEAR.
* MIN TEMPERATURE...55-65.
* MAX HUMIDITY...55-65 PERCENT.
* MIXING HEIGHT...0 FT AGL.
* SNOW LEVEL...ABOVE 4700 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......NORTHWEST WINDS 5 TO 8 MPH.
RIDGES...............NORTHWEST WINDS 5 TO 8 MPH.
FRIDAY
* SKY/WEATHER...SUNNY.
* MAX TEMPERATURE...86-96.
* MIN HUMIDITY...17-25 PERCENT.
* MIXING HEIGHT...4900 FT AGL.
* SNOW LEVEL...ABOVE 4700 FEET.
* 20-FOOT WINDS...
VALLEYS/SLOPES.......UPSLOPE/UPVALLEY 2 TO 4 MPH...BECOMING
NORTHWEST 5 TO 7 MPH IN THE AFTERNOON.
RIDGES...............NORTHEAST WINDS 5 TO 7 MPH...SHIFTING TO
THE NORTHWEST 5 MPH IN THE AFTERNOON.
EXTENDED FORECAST FOR DAYS 3 THROUGH 5
..NORTHWEST CALIFORNIA COAST
SATURDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF DRIZZLE. LOWS 44 TO
52. HIGHS 57 TO 65. NORTHWEST WINDS 5 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 40 TO 48. HIGHS 60 TO 69. NORTH
WINDS 5 MPH.
MONDAY
MOSTLY CLOUDY. LOWS 44 TO 52. HIGHS 63 TO 71. NORTH
WINDS 5 MPH.
TUESDAY
MOSTLY CLOUDY. CHANCE OF RAIN. LOWS 45 TO 53. HIGHS
62 TO 70.
WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF RAIN. LOWS 43 TO 51.
HIGHS 55 TO 63.
..NORTHWEST CALIFORNIA INTERIOR
SATURDAY
PARTLY CLOUDY. LOWS 48 TO 58. HIGHS 70 TO 83.
NORTHWEST WINDS 5 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 41 TO 51. HIGHS 72 TO 85. NORTHWEST
WINDS 5 MPH.
MONDAY
PARTLY CLOUDY. LOWS 45 TO 55. HIGHS 72 TO 85. WINDS
GENERALLY LESS THAN 5 MPH.
TUESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN. LOWS 45 TO 55.
HIGHS 72 TO 82.
WEDNESDAY
PARTLY CLOUDY WITH CHANCE OF RAIN. LOWS 43 TO 52.
HIGHS 65 TO 75.
6 TO 10 DAY OUTLOOK
TUESDAY MARCH 24 THROUGH SATURDAY MARCH 28, 2026...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND BELOW NORMAL PRECIPITATION.
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