864
FNUS56 KSTO 222140
FWFSTO
FIRE WEATHER PLANNING FORECAST FOR INTERIOR NORTHERN CALIFORNIA
NATIONAL WEATHER SERVICE SACRAMENTO CA
240 PM PDT TUE JUL 22 2025
...ISOLATED MOUNTAIN THUNDERSTORMS EXPECTED WEDNESDAY THROUGH
SATURDAY...
DISCUSSION
COOLER TEMPERATURES CONTINUE THE REST OF THIS WEEK, WITH PERIODICALLY
BREEZY ONSHORE INFLUENCED WINDS, AND IMPROVING HUMIDITY RECOVERY
STILL EXPECTED AS WELL. ISOLATED MOUNTAIN SHOWER AND THUNDERSTORM
POTENTIAL INCREASES THIS WEEK AS WELL, WITH HIGHEST CHANCES
WEDNESDAY THROUGH SATURDAY, AND HIGHEST CHANCES ON THURSDAY AND
FRIDAY. MOST STORMS ARE EXPECTED TO FORM ALONG THE CREST AND MOVE
NORTH OR EAST FROM THERE, THOUGH DUE TO POTENTIAL FOR ISOLATED DRY
THUNDERSTORMS THERE ARE STILL ELEVATED FIRE WEATHER CONCERNS IN
THE MOUNTAINS WEDNESDAY THROUGH FRIDAY.
CAZ213-232145-
EASTERN PORTION OF SHASTA-TRINITY NF-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........57-62 LOWER ELEVATIONS...EXCEPT 49-58
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........64-79 PERCENT.
* 24 HR TREND..........8 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS UP TO 7 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS UP TO 8 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........900 FT AGL.
* CHANCE OF THUNDER......1 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........86-91 LOWER ELEVATIONS...EXCEPT 78-87
HIGHER ELEVATIONS.
* 24 HR TREND..........4 DEGREES WARMER.
* MIN HUMIDITY...........24-29 PERCENT.
* 24 HR TREND..........4 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTH 4
TO 9 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING SOUTH 4
TO 9 MPH WITH LOCAL GUSTS UP TO 20 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5300 FT AGL.
* CHANCE OF THUNDER......1 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........59-64 LOWER ELEVATIONS...EXCEPT 52-60
HIGHER ELEVATIONS.
* MAX HUMIDITY...........68-83 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS UP TO 8 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 10 MPH.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......2 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY IN THE MORNING, THEN PARTLY
CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE........86-91 LOWER ELEVATIONS...EXCEPT 77-85
HIGHER ELEVATIONS.
* MIN HUMIDITY...........31-46 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTH UP
TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING SOUTH UP
TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5200 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......18 PERCENT.
CAZ214-232145-
BURNEY BASIN AND NORTHEAST PLATEAU IN SHASTA COUNTY INCLUDING
NORTHWEST LASSEN NF NORTH OF LASSEN NP-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........48-53 LOWER ELEVATIONS...EXCEPT 43-52
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........76-91 PERCENT.
* 24 HR TREND..........5 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH WITH LOCAL GUSTS UP TO
20 MPH IN THE EVENING BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH WITH LOCAL GUSTS UP TO
20 MPH SHIFTING TO THE SOUTHEAST UP TO 7 MPH AFTER MIDNIGHT.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........1200 FT AGL.
* CHANCE OF THUNDER......1 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........84-89 LOWER ELEVATIONS...EXCEPT 77-83
HIGHER ELEVATIONS.
* 24 HR TREND..........4 DEGREES WARMER.
* MIN HUMIDITY...........27-32 PERCENT.
* 24 HR TREND..........4 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING WEST 4 TO
10 MPH WITH LOCAL GUSTS UP TO 20 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING WEST 4
TO 10 MPH WITH LOCAL GUSTS UP TO 20 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........6800 FT AGL.
* CHANCE OF THUNDER......3 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........49-55.
* MAX HUMIDITY...........68-83 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........1000 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......4 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY IN THE MORNING, THEN PARTLY
CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE........83-88 LOWER ELEVATIONS...EXCEPT 77-83
HIGHER ELEVATIONS.
* MIN HUMIDITY...........32-47 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING WEST UP
TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING WEST UP
TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........7400 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......24 PERCENT.
CAZ215-232145-
NORTHERN SACRAMENTO VALLEY TO SOUTHERN TEHAMA COUNTY LINE BELOW
1000 FT-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........58-63.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........71-86 PERCENT.
* 24 HR TREND..........5 PERCENT DOWN.
* 20-FOOT WINDS..........SOUTHEAST WINDS 4 TO 9 MPH. LOCAL GUSTS UP
TO 20 MPH IN THE EVENING.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........800 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........87-92.
* 24 HR TREND..........4 DEGREES WARMER.
* MIN HUMIDITY...........25-35 PERCENT.
* 24 HR TREND..........5 PERCENT DOWN.
* 20-FOOT WINDS..........SOUTH WINDS 4 TO 9 MPH. LOCAL GUSTS UP TO
20 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5100 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........59-64.
* MAX HUMIDITY...........73-88 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........88-93.
* MIN HUMIDITY...........30-45 PERCENT.
* 20-FOOT WINDS..........VARIABLE WINDS LESS THAN 5 MPH BECOMING
SOUTH 4 TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......6 PERCENT.
CAZ216-232145-
CENTRAL SACRAMENTO VALLEY IN GLENN, COLUSA, YUBA, NORTHERN
SUTTER, AND BUTTE COUNTY BELOW 1000 FT-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........55-60.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........84-99 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTHEAST WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........84-89.
* 24 HR TREND..........4 DEGREES WARMER.
* MIN HUMIDITY...........37-52 PERCENT.
* 24 HR TREND..........7 PERCENT DOWN.
* 20-FOOT WINDS..........SOUTHEAST WINDS 4 TO 9 MPH. LOCAL GUSTS UP
TO 20 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........4300 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........56-61.
* MAX HUMIDITY...........71-86 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 4 TO 10 MPH. LOCAL GUSTS UP TO
20 MPH IN THE EVENING.
* MIXING HEIGHT..........500 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........85-90.
* MIN HUMIDITY...........38-53 PERCENT.
* 20-FOOT WINDS..........SOUTHEAST WINDS UP TO 8 MPH.
* MIXING HEIGHT..........4400 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
CAZ217-232145-
SOUTHERN SACRAMENTO VALLEY IN YOLO-
SACRAMENTO FAR WESTERN PLACER, SOUTHERN SUTTER AND SOLANO COUNTY
BELOW 1000 FT-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* MIN TEMPERATURE........53-58.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........86-98 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTH WINDS 6 TO 12 MPH WITH LOCAL GUSTS
UP TO 20 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........800 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............PARTLY CLOUDY IN THE MORNING THEN
CLEARING.
* MAX TEMPERATURE........81-86.
* 24 HR TREND..........4 DEGREES WARMER.
* MIN HUMIDITY...........38-47 PERCENT.
* 24 HR TREND..........5 PERCENT DOWN.
* 20-FOOT WINDS..........SOUTHWEST WINDS 4 TO 10 MPH. LOCAL GUSTS
UP TO 20 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........4100 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........54-59.
* MAX HUMIDITY...........71-86 PERCENT.
* 20-FOOT WINDS..........SOUTHWEST WINDS 7 TO 13 MPH WITH LOCAL
GUSTS UP TO 25 MPH.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........82-87.
* MIN HUMIDITY...........38-53 PERCENT.
* 20-FOOT WINDS..........SOUTHWEST WINDS 5 TO 11 MPH. LOCAL GUSTS
UP TO 20 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........3700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ218-232145-
CARQUINEZ STRAIT AND DELTA-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY.
* MIN TEMPERATURE........54-59.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........88-93 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........WEST WINDS 9 TO 15 MPH WITH LOCAL GUSTS UP
TO 25 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........1100 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............PARTLY CLOUDY IN THE MORNING THEN
CLEARING.
* MAX TEMPERATURE........74-81.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........48-58 PERCENT.
* 24 HR TREND..........4 PERCENT DOWN.
* 20-FOOT WINDS..........WEST WINDS 8 TO 14 MPH WITH LOCAL GUSTS UP
TO 25 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........2900 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........55-60.
* MAX HUMIDITY...........79-94 PERCENT.
* 20-FOOT WINDS..........WEST WINDS 12 TO 18 MPH WITH LOCAL GUSTS
UP TO 30 MPH.
* MIXING HEIGHT..........1100 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............PARTLY CLOUDY EARLY IN THE MORNING THEN
CLEARING.
* MAX TEMPERATURE........73-81.
* MIN HUMIDITY...........58-73 PERCENT.
* 20-FOOT WINDS..........WEST WINDS 9 TO 15 MPH WITH LOCAL GUSTS UP
TO 25 MPH.
* MIXING HEIGHT..........2700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ219-232145-
NORTHERN SAN JOAQUIN VALLEY IN SAN JOAQUIN AND STANISLAUS
COUNTIES BELOW 1000 FT-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* MIN TEMPERATURE........54-59.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........86-98 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........NORTHWEST WINDS 7 TO 13 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........900 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........82-87.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........37-46 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........NORTHWEST WINDS 5 TO 11 MPH. LOCAL GUSTS
UP TO 20 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........4400 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........54-59.
* MAX HUMIDITY...........67-82 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS 8 TO 14 MPH.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........82-87.
* MIN HUMIDITY...........34-49 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........3900 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ263-279-232145-
SOUTHEAST EDGE SHASTA-TRINITY NF AND WESTERN PORTIONS OF TEHAMA-
GLENN UNIT-EASTERN MENDOCINO NF-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........59-64 LOWER ELEVATIONS...EXCEPT 52-58
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........62-73 PERCENT.
* 24 HR TREND..........8 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS UP TO 8 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS UP TO 8 MPH IN THE EVENING
BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........900 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........86-91 LOWER ELEVATIONS...EXCEPT 71-81
HIGHER ELEVATIONS.
* 24 HR TREND..........4 DEGREES WARMER.
* MIN HUMIDITY...........27-38 PERCENT.
* 24 HR TREND..........6 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHEAST
5 TO 10 MPH WITH LOCAL GUSTS UP TO 20 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST WINDS 5 TO 11 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5000 FT AGL.
* CHANCE OF THUNDER......1 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........61-66 LOWER ELEVATIONS...EXCEPT 54-60
HIGHER ELEVATIONS.
* MAX HUMIDITY...........55-70 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 6 TO 12 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 5 TO 11 MPH SHIFTING TO THE
SOUTHWEST UP TO 7 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........900 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........87-92 LOWER ELEVATIONS...EXCEPT 70-80
HIGHER ELEVATIONS.
* MIN HUMIDITY...........29-40 PERCENT LOWER ELEVATIONS...EXCEPT
37-52 PERCENT HIGH ELEVATIONS.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHEAST
UP TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING
SOUTHEAST 4 TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4900 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......6 PERCENT.
CAZ266-232145-
NORTHERN SIERRA FOOTHILLS FROM 1000 TO 3000 FT. INCLUDES PORTIONS
OF SHASTA-TRINITY AND BUTTE UNITS-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........56-61.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........62-77 PERCENT.
* 24 HR TREND..........9 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 4 TO 9 MPH WITH LOCAL GUSTS UP
TO 20 MPH IN THE EVENING BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS UP TO 8 MPH IN THE EVENING
BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........800 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........79-87.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........28-42 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHWEST
4 TO 9 MPH WITH LOCAL GUSTS UP TO 20 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING
SOUTHWEST UP TO 8 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........4600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........59-64.
* MAX HUMIDITY...........65-80 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 4 TO 9 MPH. LOCAL GUSTS UP
TO 20 MPH IN THE EVENING.
* RIDGES/UPR SLOPES....SOUTH WINDS 4 TO 9 MPH IN THE EVENING
BECOMING VARIABLE UP TO 5 MPH.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY. AT HIGHER ELEVATIONS, A
SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE........82-87 LOWER ELEVATIONS...EXCEPT 77-83
HIGHER ELEVATIONS.
* MIN HUMIDITY...........39-54 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHWEST
UP TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING
SOUTHWEST UP TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4500 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......8 PERCENT.
CAZ220-267-232145-
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-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* MIN TEMPERATURE........53-58.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........75-90 PERCENT.
* 24 HR TREND..........4 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS UP TO 8 MPH SHIFTING TO THE
NORTHEAST AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS UP TO 8 MPH SHIFTING TO THE
NORTHEAST UP TO 7 MPH AFTER MIDNIGHT.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........700 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........79-84.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........36-43 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING WEST UP
TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING WEST UP
TO 8 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........4600 FT AGL.
* CHANCE OF THUNDER......1 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........54-59.
* MAX HUMIDITY...........73-88 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS UP TO 8 MPH SHIFTING TO THE
NORTHEAST 4 TO 9 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS UP TO 8 MPH SHIFTING TO THE
NORTHEAST AFTER MIDNIGHT.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........78-84.
* MIN HUMIDITY...........31-46 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS UP TO 8 MPH.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING WEST UP
TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4400 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......3 PERCENT.
CAZ268-232145-
NORTHERN SIERRA INCLUDING LASSEN NP AND PLUMAS AND LASSEN NF/S
WEST OF THE SIERRA CREST (WEST OF EVANS PEAK-GRIZZLY PEAK-
BECKWORTH PEAK)-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........45-55.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........64-79 PERCENT...EXCEPT 80-95 PERCENT IN
THE HIGH MOUNTAIN VALLEYS.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS UP TO 8 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH IN THE EVENING
BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........900 FT AGL.
* CHANCE OF THUNDER......2 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........73-83 LOWER ELEVATIONS...EXCEPT 68-77
HIGHER ELEVATIONS.
* 24 HR TREND..........4 DEGREES WARMER.
* MIN HUMIDITY...........27-41 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........4800 FT AGL.
* CHANCE OF THUNDER......4 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........46-56.
* MAX HUMIDITY...........68-83 PERCENT...EXCEPT 76-91 PERCENT IN
THE HIGH MOUNTAIN VALLEYS.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......4 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY IN THE MORNING, THEN PARTLY
CLOUDY WITH A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE........73-81 LOWER ELEVATIONS...EXCEPT 67-75
HIGHER ELEVATIONS.
* MIN HUMIDITY...........38-53 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHWEST
UP TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING WEST UP
TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4800 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......19 PERCENT.
CAZ221-269-232145-
STANISLAUS NF WEST OF THE SIERRA CREST-
NORTHERN SIERRA INCLUDING THE TAHOE AND ELDORADO NF/S WEST OF THE
SIERRA CREST-
240 PM PDT TUE JUL 22 2025
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* MIN TEMPERATURE........52-59 LOWER ELEVATIONS...EXCEPT 42-52
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........63-78 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS UP TO 7 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 10 MPH IN THE EVENING
BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......1 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY SUNNY. AT HIGHER ELEVATIONS, A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE........74-80 LOWER ELEVATIONS...EXCEPT 65-75
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........35-45 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........4500 FT AGL.
* CHANCE OF THUNDER......9 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR. AT HIGHER ELEVATIONS, A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE........54-60 LOWER ELEVATIONS...EXCEPT 43-53
HIGHER ELEVATIONS.
* MAX HUMIDITY...........69-84 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 11 MPH SHIFTING TO THE
SOUTHEAST UP TO 7 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........500 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......12 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY IN THE MORNING, THEN PARTLY
CLOUDY WITH A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE........74-80 LOWER ELEVATIONS...EXCEPT 63-73
HIGHER ELEVATIONS.
* MIN HUMIDITY...........38-53 PERCENT LOWER ELEVATIONS...EXCEPT
49-64 PERCENT HIGH ELEVATIONS.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING WEST UP
TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING WEST 4
TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4800 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......18 PERCENT.
EXTENDED
...SHASTA COUNTY MOUNTAINS AND COASTAL RANGE
THURSDAY NIGHT
PARTLY CLOUDY WITH A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. LOWS 52 TO 60. SOUTHWEST WINDS
5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY WITH A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. HIGHS 73 TO 83. SOUTH WINDS UP TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS 50 TO 59. WEST WINDS UP TO
10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS 71 TO 80. SOUTH WINDS UP TO
10 MPH.
SATURDAY NIGHT
CLEAR. LOWS 50 TO 60. WEST WINDS UP TO 10 MPH.
SUNDAY
SUNNY. HIGHS 75 TO 84. VARIABLE LESS THAN 5 MPH.
SUNDAY NIGHT
CLEAR. LOWS 53 TO 63. VARIABLE LESS THAN 5 MPH.
...NORTHERN SIERRA AND LASSEN PARK
THURSDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS 49 TO 59. SOUTHEAST WINDS UP TO 10 MPH.
FRIDAY
PARTLY CLOUDY WITH A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. HIGHS 73 TO 82. WEST WINDS UP TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS 47 TO 57. SOUTHEAST WINDS UP
TO 10 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS 71 TO 79. SOUTHWEST WINDS UP TO 10 MPH.
SATURDAY NIGHT
CLEAR. LOWS 48 TO 58. VARIABLE LESS THAN 5 MPH.
SUNDAY
SUNNY. HIGHS 75 TO 83. VARIABLE LESS THAN 5 MPH.
SUNDAY NIGHT
CLEAR. LOWS 50 TO 60. VARIABLE LESS THAN 5 MPH.
...SIERRA NEVADA FOOTHILLS
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 54 TO 61. SOUTHEAST WINDS UP
TO 10 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS 78 TO 85. SOUTHWEST WINDS UP TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS 53 TO 60. SOUTHEAST WINDS UP
TO 10 MPH.
SATURDAY
SUNNY. HIGHS 77 TO 83. SOUTHWEST WINDS UP TO 10 MPH.
SATURDAY NIGHT
CLEAR. LOWS 54 TO 60. VARIABLE LESS THAN 5 MPH.
SUNDAY
SUNNY. HIGHS 81 TO 87. VARIABLE LESS THAN 5 MPH.
SUNDAY NIGHT
CLEAR. LOWS 58 TO 64. VARIABLE LESS THAN 5 MPH.
...CENTRAL VALLEY AND DELTA
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 54 TO 59. SOUTHWEST WINDS
10 TO 20 MPH.
FRIDAY
SUNNY. HIGHS 82 TO 87. SOUTHWEST WINDS 5 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS 54 TO 59. SOUTHWEST WINDS
10 TO 20 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS 82 TO 87. SOUTHWEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
CLEAR. LOWS 54 TO 59. SOUTH WINDS UP TO 10 MPH.
SUNDAY
SUNNY. HIGHS 87 TO 92. WEST WINDS UP TO 10 MPH.
SUNDAY NIGHT
CLEAR. LOWS 56 TO 61. SOUTHWEST WINDS UP TO
10 MPH.
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