857
FNUS56 KSTO 250923
FWFSTO
FIRE WEATHER PLANNING FORECAST FOR INTERIOR NORTHERN CALIFORNIA
NATIONAL WEATHER SERVICE SACRAMENTO CA
123 AM PST THU DEC 25 2025
DISCUSSION
WIDESPREAD MODERATE TO HEAVY PRECIPITATION CONTINUES THROUGH
FRIDAY, WITH GUSTY SOUTH WINDS THIS EVENING THROUGH THURSDAY.
SNOW LEVELS FALL TO AROUND 4500 FEET IN THE SIERRA AND 3500 FEET
FOR SHASTA COUNTY MOUNTAINS AND COAST RANGE THROUGH FRIDAY.
LINGERING SHOWERS REMAIN POSSIBLE SATURDAY WITH CONDITIONS SLOWLY
CLEARING THROUGH THE WEEKEND.
CAZ213-260100-
EASTERN PORTION OF SHASTA-TRINITY NF-
123 AM PST THU DEC 25 2025
TODAY
* SKY/WEATHER............RAIN AT LOWER ELEVATIONS....AND RAIN AND
SNOW...HEAVY AT TIMES AT HIGHER ELEVATIONS.
* MAX TEMPERATURE........47-52 LOWER ELEVATIONS...EXCEPT 39-45
HIGHER ELEVATIONS.
* 24 HR TREND..........6 DEGREES COOLER.
* MIN HUMIDITY...........86-95 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...BREEZY. SOUTH WINDS 17 TO 29 MPH WITH LOCAL
GUSTS UP TO 50 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 17 TO 29 MPH. LOCAL GUSTS
UP TO 50 MPH IN THE MORNING.
* CWR....................90 PERCENT.
* MIXING HEIGHT..........3100 FT AGL.
* CHANCE OF THUNDER......13 PERCENT.
TONIGHT
* SKY/WEATHER............RAIN AT LOWER ELEVATIONS....AND RAIN AND
SNOW...HEAVY AT TIMES AT HIGHER ELEVATIONS.
* MIN TEMPERATURE........39-44 LOWER ELEVATIONS...EXCEPT 30-37
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 16 TO 22 MPH WITH LOCAL GUSTS UP
TO 35 MPH.
* RIDGES/UPR SLOPES....BREEZY. SOUTH WINDS 16 TO 22 MPH WITH LOCAL
GUSTS UP TO 40 MPH.
* CWR....................90 PERCENT.
* MIXING HEIGHT..........1300 FT AGL.
* CHANCE OF THUNDER......12 PERCENT.
FRIDAY
* SKY/WEATHER............RAIN AT LOWER ELEVATIONS....AND RAIN AND
SNOW AT HIGHER ELEVATIONS.
* MAX TEMPERATURE........45-50 LOWER ELEVATIONS...EXCEPT 36-42
HIGHER ELEVATIONS.
* MIN HUMIDITY...........81-96 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 11 TO 17 MPH WITH LOCAL GUSTS UP
TO 35 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 11 TO 17 MPH WITH LOCAL GUSTS UP
TO 35 MPH.
* MIXING HEIGHT..........2600 FT AGL.
* CWR....................90 PERCENT.
* CHANCE OF THUNDER......6 PERCENT.
CAZ214-260100-
BURNEY BASIN AND NORTHEAST PLATEAU IN SHASTA COUNTY INCLUDING
NORTHWEST LASSEN NF NORTH OF LASSEN NP-
123 AM PST THU DEC 25 2025
TODAY
* SKY/WEATHER............RAIN AT LOWER ELEVATIONS....AND RAIN AND
SNOW AT HIGHER ELEVATIONS. SNOW LEVEL 4500 FEET.
* MAX TEMPERATURE........43-48 LOWER ELEVATIONS...EXCEPT 38-43
HIGHER ELEVATIONS.
* 24 HR TREND..........6 DEGREES COOLER.
* MIN HUMIDITY...........78-84 PERCENT.
* 24 HR TREND..........9 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 15 TO 27 MPH WITH LOCAL GUSTS UP
TO 35 MPH.
* RIDGES/UPR SLOPES....BREEZY. SOUTH WINDS 15 TO 27 MPH WITH LOCAL
GUSTS UP TO 45 MPH.
* CWR....................70 PERCENT.
* MIXING HEIGHT..........4500 FT AGL.
* CHANCE OF THUNDER......10 PERCENT.
TONIGHT
* SKY/WEATHER............AT LOWER ELEVATIONS, RAIN IN THE EVENING,
THEN RAIN AND SNOW AFTER MIDNIGHT. AT HIGHER ELEVATIONS, RAIN AND
SNOW IN THE EVENING, THEN SNOW AND A CHANCE OF RAIN AFTER
MIDNIGHT. SNOW LEVEL 4500 FEET DECREASING TO 4000 FEET AFTER
MIDNIGHT.
* MIN TEMPERATURE........27-32.
* 24 HR TREND..........4 DEGREES COOLER.
* MAX HUMIDITY...........93-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 13 TO 25 MPH WITH LOCAL GUSTS UP
TO 40 MPH.
* RIDGES/UPR SLOPES....BREEZY. SOUTH WINDS 13 TO 25 MPH WITH LOCAL
GUSTS UP TO 45 MPH.
* CWR....................80 PERCENT.
* MIXING HEIGHT..........1200 FT AGL.
* CHANCE OF THUNDER......8 PERCENT.
FRIDAY
* SKY/WEATHER............AT LOWER ELEVATIONS, RAIN AND SNOW IN THE
MORNING, THEN RAIN IN THE AFTERNOON. AT HIGHER ELEVATIONS, RAIN
AND SNOW. SNOW LEVEL 4000 FEET INCREASING TO 4500 FEET IN THE
AFTERNOON.
* MAX TEMPERATURE........41-46 LOWER ELEVATIONS...EXCEPT 36-41
HIGHER ELEVATIONS.
* MIN HUMIDITY...........80-95 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 11 TO 17 MPH WITH LOCAL
GUSTS UP TO 25 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 11 TO 17 MPH WITH LOCAL
GUSTS UP TO 35 MPH.
* MIXING HEIGHT..........3500 FT AGL.
* CWR....................30 PERCENT.
* CHANCE OF THUNDER......4 PERCENT.
CAZ215-260100-
NORTHERN SACRAMENTO VALLEY TO SOUTHERN TEHAMA COUNTY LINE BELOW
1000 FT-
123 AM PST THU DEC 25 2025
..HIGH WIND WARNING IN EFFECT UNTIL 4 PM PST THIS AFTERNOON
TODAY
* SKY/WEATHER............A CHANCE OF RAIN IN THE MORNING, THEN RAIN
IN THE AFTERNOON.
* MAX TEMPERATURE........49-54.
* 24 HR TREND..........6 DEGREES COOLER.
* MIN HUMIDITY...........89-95 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........WINDY. SOUTH WINDS 19 TO 31 MPH WITH LOCAL
GUSTS UP TO 50 MPH.
* CWR....................60 PERCENT.
* MIXING HEIGHT..........3400 FT AGL.
* CHANCE OF THUNDER......11 PERCENT.
TONIGHT
* SKY/WEATHER............RAIN.
* MIN TEMPERATURE........41-46.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........BREEZY. SOUTHEAST WINDS 13 TO 25 MPH WITH
LOCAL GUSTS UP TO 40 MPH.
* CWR....................50 PERCENT.
* MIXING HEIGHT..........800 FT AGL.
* CHANCE OF THUNDER......13 PERCENT.
FRIDAY
* SKY/WEATHER............RAIN.
* MAX TEMPERATURE........46-51.
* MIN HUMIDITY...........90-100 PERCENT.
* 20-FOOT WINDS..........BREEZY. SOUTHEAST WINDS 13 TO 25 MPH WITH
LOCAL GUSTS UP TO 45 MPH.
* MIXING HEIGHT..........2600 FT AGL.
* CWR....................80 PERCENT.
* CHANCE OF THUNDER......7 PERCENT.
CAZ216-260100-
CENTRAL SACRAMENTO VALLEY IN GLENN, COLUSA, YUBA, NORTHERN
SUTTER, AND BUTTE COUNTY BELOW 1000 FT-
123 AM PST THU DEC 25 2025
..HIGH WIND WARNING IN EFFECT UNTIL 4 PM PST THIS AFTERNOON
TODAY
* SKY/WEATHER............A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN RAIN IN THE AFTERNOON.
* MAX TEMPERATURE........51-56.
* 24 HR TREND..........5 DEGREES COOLER.
* MIN HUMIDITY...........88-96 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........WINDY. SOUTH WINDS 20 TO 32 MPH WITH LOCAL
GUSTS UP TO 45 MPH.
* CWR....................70 PERCENT.
* MIXING HEIGHT..........3200 FT AGL.
* CHANCE OF THUNDER......13 PERCENT.
TONIGHT
* SKY/WEATHER............SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN RAIN AFTER MIDNIGHT.
* MIN TEMPERATURE........41-47.
* 24 HR TREND..........4 DEGREES COOLER.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........BREEZY. SOUTH WINDS 15 TO 27 MPH WITH
LOCAL GUSTS UP TO 40 MPH.
* CWR....................50 PERCENT.
* MIXING HEIGHT..........900 FT AGL.
* CHANCE OF THUNDER......16 PERCENT.
FRIDAY
* SKY/WEATHER............RAIN.
* MAX TEMPERATURE........48-53.
* MIN HUMIDITY...........83-98 PERCENT.
* 20-FOOT WINDS..........BREEZY. SOUTHEAST WINDS 14 TO 26 MPH WITH
LOCAL GUSTS UP TO 40 MPH.
* MIXING HEIGHT..........2700 FT AGL.
* CWR....................60 PERCENT.
* CHANCE OF THUNDER......11 PERCENT.
CAZ217-260100-
SOUTHERN SACRAMENTO VALLEY IN YOLO-
SACRAMENTO FAR WESTERN PLACER, SOUTHERN SUTTER AND SOLANO COUNTY
BELOW 1000 FT-
123 AM PST THU DEC 25 2025
..HIGH WIND WARNING IN EFFECT UNTIL 4 PM PST THIS AFTERNOON
TODAY
* SKY/WEATHER............SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS.
* MAX TEMPERATURE........53-58.
* 24 HR TREND..........4 DEGREES COOLER.
* MIN HUMIDITY...........86-94 PERCENT.
* 24 HR TREND..........4 PERCENT UP.
* 20-FOOT WINDS..........WINDY. SOUTH WINDS 18 TO 30 MPH WITH LOCAL
GUSTS UP TO 45 MPH.
* CWR....................80 PERCENT.
* MIXING HEIGHT..........3100 FT AGL.
* CHANCE OF THUNDER......18 PERCENT.
TONIGHT
* SKY/WEATHER............SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN A CHANCE OF RAIN AFTER
MIDNIGHT.
* MIN TEMPERATURE........46-51.
* 24 HR TREND..........4 DEGREES COOLER.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........BREEZY. SOUTH WINDS 15 TO 27 MPH WITH
LOCAL GUSTS UP TO 40 MPH.
* CWR....................60 PERCENT.
* MIXING HEIGHT..........2000 FT AGL.
* CHANCE OF THUNDER......16 PERCENT.
FRIDAY
* SKY/WEATHER............RAIN.
* MAX TEMPERATURE........51-56.
* MIN HUMIDITY...........80-95 PERCENT.
* 20-FOOT WINDS..........BREEZY. SOUTHEAST WINDS 14 TO 26 MPH
SHIFTING TO THE SOUTH 12 TO 18 MPH IN THE AFTERNOON. LOCAL GUSTS
UP TO 35 MPH.
* MIXING HEIGHT..........3400 FT AGL.
* CWR....................30 PERCENT.
* CHANCE OF THUNDER......11 PERCENT.
CAZ218-260100-
CARQUINEZ STRAIT AND DELTA-
123 AM PST THU DEC 25 2025
..HIGH WIND WARNING IN EFFECT UNTIL 4 PM PST THIS AFTERNOON
TODAY
* SKY/WEATHER............SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS.
* MAX TEMPERATURE........56-61.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........77-85 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........WINDY. SOUTH WINDS 20 TO 32 MPH WITH LOCAL
GUSTS UP TO 50 MPH.
* CWR....................60 PERCENT.
* MIXING HEIGHT..........3800 FT AGL.
* CHANCE OF THUNDER......15 PERCENT.
TONIGHT
* SKY/WEATHER............SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN RAIN LIKELY AFTER MIDNIGHT.
* MIN TEMPERATURE........47-52.
* 24 HR TREND..........5 DEGREES COOLER.
* MAX HUMIDITY...........91-96 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........WINDY. SOUTH WINDS 18 TO 30 MPH WITH LOCAL
GUSTS UP TO 45 MPH.
* CWR....................50 PERCENT.
* MIXING HEIGHT..........2500 FT AGL.
* CHANCE OF THUNDER......15 PERCENT.
FRIDAY
* SKY/WEATHER............RAIN UNTIL LATE AFTERNOON, THEN A CHANCE
OF RAIN LATE IN THE AFTERNOON.
* MAX TEMPERATURE........53-58.
* MIN HUMIDITY...........80-95 PERCENT.
* 20-FOOT WINDS..........BREEZY. SOUTH WINDS 16 TO 28 MPH WITH
LOCAL GUSTS UP TO 40 MPH DECREASING TO 12 TO 18 MPH WITH LOCAL
GUSTS UP TO 30 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........3500 FT AGL.
* CWR....................30 PERCENT.
* CHANCE OF THUNDER......10 PERCENT.
CAZ219-260100-
NORTHERN SAN JOAQUIN VALLEY IN SAN JOAQUIN AND STANISLAUS
COUNTIES BELOW 1000 FT-
123 AM PST THU DEC 25 2025
..HIGH WIND WARNING IN EFFECT UNTIL 4 PM PST THIS AFTERNOON
TODAY
* SKY/WEATHER............SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS.
* MAX TEMPERATURE........54-59.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........75-90 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........WINDY. SOUTH WINDS 23 TO 35 MPH DECREASING
TO 15 TO 27 MPH IN THE AFTERNOON. LOCAL GUSTS UP TO 50 MPH.
* CWR....................60 PERCENT.
* MIXING HEIGHT..........3000 FT AGL.
* CHANCE OF THUNDER......21 PERCENT.
TONIGHT
* SKY/WEATHER............SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN A CHANCE OF RAIN AFTER
MIDNIGHT.
* MIN TEMPERATURE........45-50.
* 24 HR TREND..........4 DEGREES COOLER.
* MAX HUMIDITY...........93-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........WINDY. SOUTH WINDS 20 TO 32 MPH WITH LOCAL
GUSTS UP TO 40 MPH.
* CWR....................60 PERCENT.
* MIXING HEIGHT..........1900 FT AGL.
* CHANCE OF THUNDER......16 PERCENT.
FRIDAY
* SKY/WEATHER............RAIN UNTIL LATE AFTERNOON, THEN A CHANCE
OF RAIN LATE IN THE AFTERNOON.
* MAX TEMPERATURE........52-57.
* MIN HUMIDITY...........75-90 PERCENT.
* 20-FOOT WINDS..........BREEZY. SOUTHEAST WINDS 14 TO 26 MPH
DECREASING TO 11 TO 17 MPH IN THE AFTERNOON. LOCAL GUSTS UP TO 35
MPH.
* MIXING HEIGHT..........3900 FT AGL.
* CWR....................30 PERCENT.
* CHANCE OF THUNDER......8 PERCENT.
CAZ263-279-260100-
SOUTHEAST EDGE SHASTA-TRINITY NF AND WESTERN PORTIONS OF TEHAMA-
GLENN UNIT-EASTERN MENDOCINO NF-
123 AM PST THU DEC 25 2025
TODAY
* SKY/WEATHER............AT LOWER ELEVATIONS, A CHANCE OF RAIN IN
THE MORNING, THEN RAIN IN THE AFTERNOON. AT HIGHER ELEVATIONS,
RAIN AND SNOW. SNOW LEVEL 4500 FEET.
* MAX TEMPERATURE........48-53 LOWER ELEVATIONS...EXCEPT 35-44
HIGHER ELEVATIONS.
* 24 HR TREND..........6 DEGREES COOLER.
* MIN HUMIDITY...........77-87 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...BREEZY. SOUTH WINDS 18 TO 30 MPH WITH LOCAL
GUSTS UP TO 40 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 18 TO 30 MPH WITH LOCAL
GUSTS UP TO 50 MPH.
* CWR....................80 PERCENT.
* MIXING HEIGHT..........3300 FT AGL.
* CHANCE OF THUNDER......13 PERCENT.
TONIGHT
* SKY/WEATHER............AT LOWER ELEVATIONS, RAIN. AT HIGHER
ELEVATIONS, RAIN, SNOW...HEAVY AT TIMES AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN RAIN AND SNOW AFTER MIDNIGHT.
SNOW LEVEL 4500 FEET DECREASING TO 4000 FEET AFTER MIDNIGHT.
* MIN TEMPERATURE........38-43 LOWER ELEVATIONS...EXCEPT 29-36
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........88-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 15 TO 27 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 15 TO 27 MPH WITH LOCAL
GUSTS UP TO 45 MPH.
* CWR....................70 PERCENT.
* MIXING HEIGHT..........1000 FT AGL.
* CHANCE OF THUNDER......14 PERCENT.
FRIDAY
* SKY/WEATHER............RAIN AT LOWER ELEVATIONS....AND RAIN AND
SNOW AT HIGHER ELEVATIONS. SNOW LEVEL 4000 FEET INCREASING TO
4500 FEET IN THE AFTERNOON.
* MAX TEMPERATURE........45-50 LOWER ELEVATIONS...EXCEPT 34-42
HIGHER ELEVATIONS.
* MIN HUMIDITY...........77-92 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 11 TO 17 MPH WITH LOCAL
GUSTS UP TO 30 MPH.
* RIDGES/UPR SLOPES....BREEZY. SOUTH WINDS 17 TO 29 MPH DECREASING
TO 13 TO 19 MPH IN THE AFTERNOON. LOCAL GUSTS UP TO 40 MPH.
* MIXING HEIGHT..........1200 FT AGL.
* CWR....................70 PERCENT.
* CHANCE OF THUNDER......7 PERCENT.
CAZ266-260100-
NORTHERN SIERRA FOOTHILLS FROM 1000 TO 3000 FT. INCLUDES PORTIONS
OF SHASTA-TRINITY AND BUTTE UNITS-
123 AM PST THU DEC 25 2025
..HIGH WIND WARNING IN EFFECT UNTIL 4 PM PST THIS AFTERNOON
TODAY
* SKY/WEATHER............SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN RAIN IN THE AFTERNOON.
* MAX TEMPERATURE........46-51.
* 24 HR TREND..........6 DEGREES COOLER.
* MIN HUMIDITY...........87-98 PERCENT.
* 24 HR TREND..........7 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...VERY WINDY. SOUTH WINDS 24 TO 36 MPH WITH
LOCAL GUSTS UP TO 55 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 22 TO 34 MPH WITH LOCAL
GUSTS UP TO 55 MPH.
* CWR....................90 PERCENT.
* MIXING HEIGHT..........2900 FT AGL.
* CHANCE OF THUNDER......12 PERCENT.
TONIGHT
* SKY/WEATHER............HEAVY SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN A CHANCE OF RAIN AFTER
MIDNIGHT.
* MIN TEMPERATURE........38-43.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WINDY. SOUTH WINDS 18 TO 30 MPH WITH LOCAL
GUSTS UP TO 45 MPH.
* RIDGES/UPR SLOPES....BREEZY. SOUTH WINDS 18 TO 30 MPH WITH LOCAL
GUSTS UP TO 45 MPH.
* CWR....................80 PERCENT.
* MIXING HEIGHT..........1000 FT AGL.
* CHANCE OF THUNDER......13 PERCENT.
FRIDAY
* SKY/WEATHER............RAIN.
* MAX TEMPERATURE........43-48.
* MIN HUMIDITY...........78-93 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WINDY. SOUTHEAST WINDS 20 TO 32 MPH BECOMING
SOUTH 13 TO 19 MPH IN THE AFTERNOON. LOCAL GUSTS UP TO 45 MPH.
* RIDGES/UPR SLOPES....BREEZY. SOUTH WINDS 16 TO 28 MPH DECREASING
TO 10 TO 16 MPH IN THE AFTERNOON. LOCAL GUSTS UP TO 45 MPH.
* MIXING HEIGHT..........2600 FT AGL.
* CWR....................90 PERCENT.
* CHANCE OF THUNDER......9 PERCENT.
CAZ220-267-260100-
SOUTHERN MOTHERLODE FROM 1000 TO 3000 FT. INCLUDES PORTIONS OF
TOULUMNE-CALAVERAS UNIT-
NORTHERN MOTHERLODE FROM 1000 TO 3000 FT. INCLUDES PORTIONS OF
NEVADA-YUBA-PLACER-AMADOR AND ELDORADO UNITS-
123 AM PST THU DEC 25 2025
..HIGH WIND WARNING IN EFFECT UNTIL 4 PM PST THIS AFTERNOON
TODAY
* SKY/WEATHER............SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS.
* MAX TEMPERATURE........47-52.
* 24 HR TREND..........5 DEGREES COOLER.
* MIN HUMIDITY...........93-98 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...BREEZY. SOUTH WINDS 17 TO 29 MPH DECREASING
TO 15 TO 21 MPH IN THE AFTERNOON. LOCAL GUSTS UP TO 45 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 18 TO 30 MPH DECREASING
TO 15 TO 21 MPH IN THE AFTERNOON. LOCAL GUSTS UP TO 45 MPH.
* CWR....................90 PERCENT.
* MIXING HEIGHT..........2700 FT AGL.
* CHANCE OF THUNDER......20 PERCENT.
TONIGHT
* SKY/WEATHER............SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS.
* MIN TEMPERATURE........38-43.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...BREEZY. SOUTH WINDS 14 TO 26 MPH WITH LOCAL
GUSTS UP TO 40 MPH.
* RIDGES/UPR SLOPES....BREEZY. SOUTH WINDS 14 TO 26 MPH WITH LOCAL
GUSTS UP TO 40 MPH.
* CWR....................90 PERCENT.
* MIXING HEIGHT..........1200 FT AGL.
* CHANCE OF THUNDER......16 PERCENT.
FRIDAY
* SKY/WEATHER............RAIN.
* MAX TEMPERATURE........45-50.
* MIN HUMIDITY...........80-95 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 10 TO 16 MPH WITH LOCAL
GUSTS UP TO 30 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 10 TO 16 MPH WITH LOCAL GUSTS UP
TO 30 MPH.
* MIXING HEIGHT..........3600 FT AGL.
* CWR....................70 PERCENT.
* CHANCE OF THUNDER......9 PERCENT.
CAZ268-260100-
NORTHERN SIERRA INCLUDING LASSEN NP AND PLUMAS AND LASSEN NF/S
WEST OF THE SIERRA CREST (WEST OF EVANS PEAK-GRIZZLY PEAK-
BECKWORTH PEAK)-
123 AM PST THU DEC 25 2025
TODAY
* SKY/WEATHER............SNOW...HEAVY AT TIMES AND RAIN. SNOW LEVEL
5000 FEET.
* MAX TEMPERATURE........37-42 LOWER ELEVATIONS...EXCEPT 32-37
HIGHER ELEVATIONS.
* 24 HR TREND..........7 DEGREES COOLER.
* MIN HUMIDITY...........86-97 PERCENT.
* 24 HR TREND..........7 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WINDY. SOUTH WINDS 22 TO 34 MPH. LOCAL GUSTS
UP TO 55 MPH DECREASING TO 40 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 22 TO 34 MPH. LOCAL GUSTS
UP TO 60 MPH DECREASING TO 45 MPH IN THE AFTERNOON.
* CWR....................100 PERCENT.
* MIXING HEIGHT..........3500 FT AGL.
* CHANCE OF THUNDER......11 PERCENT.
TONIGHT
* SKY/WEATHER............SNOW...HEAVY AT TIMES AND RAIN. SNOW LEVEL
5000 FEET DECREASING TO 4000 FEET AFTER MIDNIGHT.
* MIN TEMPERATURE........24-33.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........93-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WINDY. SOUTH WINDS 21 TO 33 MPH WITH LOCAL
GUSTS UP TO 50 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 21 TO 33 MPH WITH LOCAL
GUSTS UP TO 55 MPH.
* CWR....................100 PERCENT.
* MIXING HEIGHT..........1800 FT AGL.
* CHANCE OF THUNDER......11 PERCENT.
FRIDAY
* SKY/WEATHER............RAIN AND SNOW. SNOW LEVEL 4000 FEET
INCREASING TO 4500 FEET IN THE AFTERNOON.
* MAX TEMPERATURE........35-40 LOWER ELEVATIONS...EXCEPT 29-35
HIGHER ELEVATIONS.
* MIN HUMIDITY...........78-93 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...BREEZY. SOUTH WINDS 16 TO 28 MPH DECREASING
TO 9 TO 15 MPH IN THE AFTERNOON. LOCAL GUSTS UP TO 40 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 21 TO 33 MPH WITH LOCAL
GUSTS UP TO 50 MPH BECOMING SOUTHWEST 15 TO 21 MPH WITH LOCAL
GUSTS UP TO 35 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........2700 FT AGL.
* CWR....................90 PERCENT.
* CHANCE OF THUNDER......7 PERCENT.
CAZ221-269-260100-
STANISLAUS NF WEST OF THE SIERRA CREST-
NORTHERN SIERRA INCLUDING THE TAHOE AND ELDORADO NF/S WEST OF THE
SIERRA CREST-
123 AM PST THU DEC 25 2025
TODAY
* SKY/WEATHER............AT LOWER ELEVATIONS, SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. AT HIGHER ELEVATIONS, SNOW...HEAVY AT
TIMES AND RAIN...HEAVY AT TIMES IN THE MORNING, THEN SNOW...HEAVY
AT TIMES IN THE AFTERNOON. SNOW LEVEL 5500 FEET.
* MAX TEMPERATURE........41-46 LOWER ELEVATIONS...EXCEPT 30-39
HIGHER ELEVATIONS.
* 24 HR TREND..........6 DEGREES COOLER.
* MIN HUMIDITY...........81-96 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...BREEZY. SOUTH WINDS 20 TO 32 MPH WITH LOCAL
GUSTS UP TO 45 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 20 TO 32 MPH WITH LOCAL
GUSTS UP TO 65 MPH.
* CWR....................100 PERCENT.
* MIXING HEIGHT..........2900 FT AGL.
* CHANCE OF THUNDER......14 PERCENT.
TONIGHT
* SKY/WEATHER............AT LOWER ELEVATIONS, SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SHOWERS, SNOW AND A
SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. AT HIGHER
ELEVATIONS, HEAVY SNOW SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN SNOW...HEAVY AT TIMES AFTER
MIDNIGHT. SNOW LEVEL 5500 FEET DECREASING TO 5000 FEET AFTER
MIDNIGHT.
* MIN TEMPERATURE........33-38 LOWER ELEVATIONS...EXCEPT 22-30
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........90-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...BREEZY. SOUTH WINDS 18 TO 30 MPH WITH LOCAL
GUSTS UP TO 45 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 19 TO 31 MPH WITH LOCAL
GUSTS UP TO 65 MPH.
* CWR....................100 PERCENT.
* MIXING HEIGHT..........1700 FT AGL.
* CHANCE OF THUNDER......14 PERCENT.
FRIDAY
* SKY/WEATHER............SNOW...HEAVY AT TIMES AND RAIN. SNOW LEVEL
4500 FEET INCREASING TO 5000 FEET IN THE AFTERNOON.
* MAX TEMPERATURE........39-45 LOWER ELEVATIONS...EXCEPT 28-36
HIGHER ELEVATIONS.
* MIN HUMIDITY...........74-89 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 10 TO 16 MPH WITH LOCAL GUSTS UP
TO 30 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 21 TO 33 MPH WITH LOCAL
GUSTS UP TO 50 MPH BECOMING SOUTHWEST 13 TO 19 MPH WITH LOCAL
GUSTS UP TO 35 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........3000 FT AGL.
* CWR....................80 PERCENT.
* CHANCE OF THUNDER......8 PERCENT.
EXTENDED
...SHASTA COUNTY MOUNTAINS AND COASTAL RANGE
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN AND SNOW.
LOWS 25 TO 34. WEST WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN AND SNOW.
HIGHS 37 TO 45. NORTH WINDS 5 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 22 TO 32. NORTH WINDS 5 TO
15 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS 40 TO 50. NORTH WINDS 5 TO 15 MPH.
SUNDAY NIGHT
CLEAR. LOWS 25 TO 35. NORTH WINDS 5 TO 10 MPH.
MONDAY
SUNNY. HIGHS 45 TO 55. NORTH WINDS UP TO 10 MPH.
MONDAY NIGHT
CLEAR. LOWS 29 TO 39. NORTH WINDS UP TO 10 MPH.
...NORTHERN SIERRA AND LASSEN PARK
FRIDAY NIGHT
RAIN AND SNOW LIKELY. LOWS 25 TO 35. SOUTH WINDS
5 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN AND SNOW. HIGHS
38 TO 47. NORTHEAST WINDS UP TO 10 MPH.
SATURDAY NIGHT
COLDER. MOSTLY CLEAR. LOWS 20 TO 30. NORTHEAST
WINDS 5 TO 15 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS 40 TO 50. NORTHEAST WINDS UP TO
10 MPH.
SUNDAY NIGHT
CLEAR. LOWS 23 TO 33. NORTHEAST WINDS 5 TO
10 MPH.
MONDAY
SUNNY. HIGHS 45 TO 55. NORTHEAST WINDS UP TO 10 MPH.
MONDAY NIGHT
CLEAR. LOWS 26 TO 36. NORTHEAST WINDS 5 TO
10 MPH.
...SIERRA NEVADA FOOTHILLS
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN. LOWS 35 TO
40. SOUTHEAST WINDS UP TO 10 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN. HIGHS
47 TO 52. NORTH WINDS UP TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 32 TO 37. NORTHEAST WINDS
5 TO 15 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS 48 TO 53. VARIABLE LESS THAN 5 MPH.
SUNDAY NIGHT
CLEAR. LOWS 33 TO 38. VARIABLE LESS THAN 5 MPH.
MONDAY
SUNNY. HIGHS 51 TO 57. VARIABLE LESS THAN 5 MPH.
MONDAY NIGHT
CLEAR. LOWS 36 TO 41. VARIABLE LESS THAN 5 MPH.
...CENTRAL VALLEY AND DELTA
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN. LOWS 40 TO
45. SOUTHEAST WINDS UP TO 10 MPH.
SATURDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN. HIGHS
48 TO 53. NORTH WINDS UP TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 37 TO 42. NORTHWEST WINDS
5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. HIGHS 48 TO 53. NORTH WINDS 5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 35 TO 40. VARIABLE LESS THAN
5 MPH.
MONDAY
MOSTLY CLOUDY. HIGHS 48 TO 53. VARIABLE LESS THAN
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 35 TO 40. VARIABLE LESS THAN
5 MPH.
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