423
FNUS56 KEKA 180710
FWFEKA

Fire Weather Planning Forecast for Northwest California
National Weather Service Eureka CA
1210 AM PDT Sat Oct 18 2025

.DISCUSSION...Modestly warm and dry conditions will peak today.
The warmest interior valleys will reach near 80 today with
minimum RH as low as 30 percent in drier areas. Winds will
generally be gentle and out of the Northwest. Cooler and more
moist air will build in Sunday with very light rain possible along
the coast. Moderate offshore flow will help conditions quickly
dry back out early next week with RH below 30 percent on Monday.


CAZ201-190115-
North Coast-
1210 AM PDT Sat Oct 18 2025

.TODAY...
* Sky/Weather...Partly cloudy then becoming sunny.
* Max Temperature...66-76.
* Min Humidity...45-60 percent.
* MIXING HEIGHT...2800 ft AGL.
* SNOW LEVEL...Above 4300 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Upslope/upvalley 2 to 4 mph...becoming
                         west 5 mph in the afternoon.
    RIDGES...............Northeast winds 5 mph in the
                         morning...becoming variable 2 to 4 mph.

.TONIGHT...
* Sky/Weather...Partly cloudy. Patchy dense fog after midnight.
                Chance of rain early in the morning.
* Min Temperature...45-53.
* Max Humidity...79-94 percent.
* MIXING HEIGHT...0 ft AGL.
* SNOW LEVEL...Above 4300 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Downslope/downvalley 1 to 3 mph.
    RIDGES...............North winds 5 mph.

.SUNDAY...
* Sky/Weather...Mostly cloudy then becoming partly cloudy. Chance
                of rain through the day.
* Max Temperature...60-70.
* Min Humidity...54-69 percent.
* MIXING HEIGHT...4300 ft AGL.
* SNOW LEVEL...Above 4300 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Light winds 2 to 5 mph...becoming
                         northwest 5 to 9 mph in the afternoon.
    RIDGES...............North winds 5 to 10 mph.


$$

CAZ202-190115-
Coastal Mendocino-
1210 AM PDT Sat Oct 18 2025

.TODAY...
* Sky/Weather...Partly cloudy then becoming sunny. Patchy fog early
                in the morning.
* Max Temperature...66-76.
* Min Humidity...48-58 percent.
* MIXING HEIGHT...2300 ft AGL.
* SNOW LEVEL...Above 2200 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Upslope/upvalley 2 to 4 mph...becoming
                         west 5 mph in the afternoon.
    RIDGES...............Variable 1 to 3 mph.

.TONIGHT...
* Sky/Weather...Mostly clear. Patchy fog after midnight.
* Min Temperature...47-55.
* Max Humidity...80-95 percent.
* MIXING HEIGHT...0 ft AGL.
* SNOW LEVEL...Above 2200 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Downslope/downvalley 1 to 3 mph.
    RIDGES...............Variable 1 to 3 mph.

.SUNDAY...
* Sky/Weather...Sunny. Patchy fog early in the morning.
* Max Temperature...64-73.
* Min Humidity...51-66 percent.
* MIXING HEIGHT...2800 ft AGL.
* SNOW LEVEL...Above 2200 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Northwest winds 6 to 11 mph.
    RIDGES...............Northwest winds 6 to 11 mph.


$$

CAZ203-204-190115-
Upper Smith-Lower Middle Klamath-
1210 AM PDT Sat Oct 18 2025

.TODAY...
* Sky/Weather...Sunny.
* Max Temperature...68-78.
* Min Humidity...28-38 percent.
* MIXING HEIGHT...3700 ft AGL.
* SNOW LEVEL...Above 6000 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......East winds 5 mph...shifting to the
                         southwest in the afternoon.
    RIDGES...............East winds 5 mph in the morning...becoming
                         variable 2 to 4 mph.

.TONIGHT...
* Sky/Weather...Partly cloudy. Slight chance of rain after
                midnight.
* Min Temperature...44-52.
* Max Humidity...76-91 percent.
* MIXING HEIGHT...0 ft AGL.
* SNOW LEVEL...Above 6000 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Southwest winds 5 mph.
    RIDGES...............Southwest winds 5 mph.

.SUNDAY...
* Sky/Weather...Mostly cloudy then becoming partly cloudy. Chance
                of rain through the day.
* Max Temperature...56-66.
* Min Humidity...40-50 percent.
* MIXING HEIGHT...6200 ft AGL.
* SNOW LEVEL...5900 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Light winds 2 to 4 mph...becoming west 5
                         mph in the afternoon.
    RIDGES...............West winds 5 to 8 mph.


$$

CAZ211-212-190115-
Hoopa-Van Duzen/Mad River-
1210 AM PDT Sat Oct 18 2025

.TODAY...
* Sky/Weather...Sunny.
* Max Temperature...68-78.
* Min Humidity...35-45 percent.
* MIXING HEIGHT...4000 ft AGL.
* SNOW LEVEL...Above 5800 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Upslope/upvalley 2 to 4 mph...becoming
                         northwest 5 mph in the afternoon.
    RIDGES...............Southeast winds 5 mph in the
                         morning...becoming variable 2 to 4 mph.

.TONIGHT...
* Sky/Weather...Mostly clear.
* Min Temperature...44-52.
* Max Humidity...74-89 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...............Southwest winds 5 mph.

.SUNDAY...
* Sky/Weather...Sunny then becoming partly cloudy then becoming
                sunny.
* Max Temperature...58-68.
* Min Humidity...45-55 percent.
* MIXING HEIGHT...5200 ft AGL.
* SNOW LEVEL...Above 5800 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Upslope/upvalley 2 to 5 mph...becoming
                         northwest 5 to 9 mph in the afternoon.
    RIDGES...............Variable 2 to 4 mph...becoming northwest 5
                         to 7 mph in the afternoon.


$$

CAZ283-190115-
Trinity-
1210 AM PDT Sat Oct 18 2025

.TODAY...
* Sky/Weather...Sunny.
* Max Temperature...66-76.
* Min Humidity...33-43 percent.
* MIXING HEIGHT...4400 ft AGL.
* SNOW LEVEL...Above 8000 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Upslope/upvalley 1 to 3 mph.
    RIDGES...............Southeast winds 5 mph in the
                         morning...becoming variable 2 to 4 mph.

.TONIGHT...
* Sky/Weather...Mostly clear.
* Min Temperature...42-50.
* Max Humidity...69-84 percent.
* MIXING HEIGHT...0 ft AGL.
* SNOW LEVEL...Above 8000 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Downslope/downvalley 2 to 4 mph...becoming
                         southwest 5 mph after midnight.
    RIDGES...............Southwest winds 5 mph.

.SUNDAY...
* Sky/Weather...Sunny then becoming partly cloudy then becoming
                sunny.
* Max Temperature...58-68.
* Min Humidity...38-48 percent.
* MIXING HEIGHT...6600 ft AGL.
* SNOW LEVEL...7200 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......West winds 5 to 9 mph.
    RIDGES...............West winds 5 to 9 mph.


$$

CAZ276-190115-
Interior Mendocino-
1210 AM PDT Sat Oct 18 2025

.TODAY...
* Sky/Weather...Sunny.
* Max Temperature...72-82.
* Min Humidity...36-46 percent.
* MIXING HEIGHT...4600 ft AGL.
* SNOW LEVEL...Above 4000 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Upslope/upvalley 2 to 4 mph...becoming
                         southwest 5 mph in the afternoon.
    RIDGES...............Southeast winds 5 mph in the
                         morning...becoming variable 2 to 4 mph.

.TONIGHT...
* Sky/Weather...Clear.
* Min Temperature...46-54.
* Max Humidity...74-89 percent.
* MIXING HEIGHT...0 ft AGL.
* SNOW LEVEL...Above 4000 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Northwest winds 5 mph in the
                         evening...becoming downslope/downvalley 2
                         to 4 mph.
    RIDGES...............Variable 1 to 3 mph.

.SUNDAY...
* Sky/Weather...Sunny.
* Max Temperature...68-78.
* Min Humidity...42-52 percent.
* MIXING HEIGHT...4800 ft AGL.
* SNOW LEVEL...Above 4000 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Upslope/upvalley 2 to 5 mph...becoming
                         northwest 5 to 8 mph in the afternoon.
    RIDGES...............Northwest winds 5 to 9 mph.


$$

CAZ277-190115-
W Mendocino NF/E Mendocino Unit-
1210 AM PDT Sat Oct 18 2025

.TODAY...
* Sky/Weather...Sunny.
* Max Temperature...68-78.
* Min Humidity...34-44 percent.
* MIXING HEIGHT...5000 ft AGL.
* SNOW LEVEL...Above 7100 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Upslope/upvalley 1 to 3 mph.
    RIDGES...............Variable 2 to 4 mph...becoming southwest 5
                         mph in the afternoon.

.TONIGHT...
* Sky/Weather...Mostly clear.
* Min Temperature...46-54.
* Max Humidity...71-86 percent.
* MIXING HEIGHT...0 ft AGL.
* SNOW LEVEL...Above 7100 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Downslope/downvalley 1 to 3 mph.
    RIDGES...............Variable 2 to 4 mph...becoming southwest 5
                         mph after midnight.

.SUNDAY...
* Sky/Weather...Sunny.
* Max Temperature...63-73.
* Min Humidity...38-48 percent.
* MIXING HEIGHT...5500 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...............Northwest winds 5 to 8 mph.


$$

CAZ264-190115-
Lake County Portion of Lake/Napa/Sonoma RU-
1210 AM PDT Sat Oct 18 2025

.TODAY...
* Sky/Weather...Sunny.
* Max Temperature...71-79.
* Min Humidity...37-47 percent.
* MIXING HEIGHT...3800 ft AGL.
* SNOW LEVEL...Above 4700 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Southeast winds 5 to 8 mph.
    RIDGES...............Southeast winds 5 to 8 mph.

.TONIGHT...
* Sky/Weather...Mostly clear.
* Min Temperature...49-57.
* Max Humidity...68-83 percent.
* MIXING HEIGHT...0 ft AGL.
* SNOW LEVEL...Above 4700 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......Northwest winds 5 to 6 mph...becoming 5 to
                         7 mph after midnight.
    RIDGES...............West winds 5 mph.

.SUNDAY...
* Sky/Weather...Sunny.
* Max Temperature...69-79.
* Min Humidity...38-48 percent.
* MIXING HEIGHT...4700 ft AGL.
* SNOW LEVEL...Above 4700 feet.
* 20-FOOT WINDS...
    VALLEYS/SLOPES.......West winds 5 to 9 mph.
    RIDGES...............West winds 5 to 9 mph.


$$


.EXTENDED FORECAST FOR DAYS 3 THROUGH 5...

...Northwest California Coast...
.MONDAY...Mostly clear. Lows 44 to 52. Highs 63 to 71. North
winds 5 mph.
.TUESDAY...Mostly clear. Lows 46 to 54. Highs 63 to 71. North
winds 5 mph.
.WEDNESDAY...Mostly cloudy. Lows 45 to 53. Highs 59 to 67.
Northeast winds 5 mph.
.THURSDAY...Mostly cloudy with slight chance of rain. Lows 46 to
54. Highs 60 to 68.
.FRIDAY...Mostly cloudy with rain likely. Lows 49 to 57. Highs
58 to 66.

...Northwest California Interior...
.MONDAY...Mostly clear. Lows 44 to 54. Highs 72 to 82. North
winds 5 mph.
.TUESDAY...Mostly clear. Lows 45 to 55. Highs 71 to 81. Winds
generally less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 44 to 53. Highs 67 to 76. West
winds 5 mph.
.THURSDAY...Partly cloudy. Lows 43 to 52. Highs 65 to 75.
.FRIDAY...Mostly cloudy. Chance of rain. Lows 44 to 52. Highs
60 to 69.

.6 to 10 DAY OUTLOOK...Thursday October 23 THROUGH Monday October 27, 2025...
FOR NW CALIF...NEAR NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.

$$

visit us at www.weather.gov/eureka