620
FNUS56 KSTO 162026
FWFSTO
FIRE WEATHER PLANNING FORECAST FOR INTERIOR NORTHERN CALIFORNIA
NATIONAL WEATHER SERVICE SACRAMENTO CA
126 PM PDT TUE SEP 16 2025
..CHANCE OF THUNDERSTORMS THURSDAY THROUGH SATURDAY
DISCUSSION
WARM AND DRY CONDITIONS CONTINUE THROUGH WEDNESDAY WITH ABOVE
NORMAL TEMPERATURES AND LOWERING RELATIVE HUMIDITY. A SURGE OF
MOISTURE WILL BRING SHOWER AND THUNDERSTORM CHANCES TO THE AREA
LATER THIS WEEK, ALONG WITH COOLER TEMPERATURES, HIGHER RELATIVE
HUMIDITY, AND PERIODICALLY BREEZY ONSHORE WINDS. LIGHTNING FROM
THUNDERSTORMS WILL LEAD TO ELEVATED FIRE WEATHER CONCERNS THURSDAY
THROUGH SATURDAY, INCLUDING THURSDAY NIGHT INTO FRIDAY MORNING.
CAZ213-172030-
EASTERN PORTION OF SHASTA-TRINITY NF-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........61-67 LOWER ELEVATIONS...EXCEPT 51-61
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........37-52 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...DRAINAGE WINDS UP TO 5 MPH BECOMING NORTH UP
TO 8 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS UP TO 7 MPH SHIFTING TO THE
NORTH UP TO 8 MPH AFTER MIDNIGHT.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........700 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........93-98 LOWER ELEVATIONS...EXCEPT 83-92
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........13-18 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTH WINDS UP TO 7 MPH IN THE MORNING
BECOMING UPSLOPE UP TO 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS UP TO 8 MPH SHIFTING TO THE
SOUTH UP TO 7 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........6100 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........62-68 LOWER ELEVATIONS...EXCEPT 54-64
HIGHER ELEVATIONS.
* MAX HUMIDITY...........40-55 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...DRAINAGE WINDS UP TO 5 MPH BECOMING NORTH UP
TO 7 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS UP TO 7 MPH SHIFTING TO THE NORTH
4 TO 9 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........91-96 LOWER ELEVATIONS...EXCEPT 82-90
HIGHER ELEVATIONS.
* MIN HUMIDITY...........15-28 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTH WINDS UP TO 8 MPH IN THE MORNING
BECOMING UPSLOPE UP TO 5 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 4 TO 9 MPH SHIFTING TO THE SOUTH
UP TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5300 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ214-172030-
BURNEY BASIN AND NORTHEAST PLATEAU IN SHASTA COUNTY INCLUDING
NORTHWEST LASSEN NF NORTH OF LASSEN NP-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........46-52.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........58-66 PERCENT LOWER ELEVATIONS...EXCEPT
43-56 PERCENT HIGH ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHWEST WINDS UP TO 7 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS UP TO 7 MPH IN THE EVENING
BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........700 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........87-92 LOWER ELEVATIONS...EXCEPT 81-86
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........14-19 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING WEST UP
TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING
NORTHWEST UP TO 8 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........6900 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........48-54.
* MAX HUMIDITY...........42-57 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS UP TO 7 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS UP TO 7 MPH IN THE EVENING
BECOMING VARIABLE UP TO 5 MPH.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY
LATE IN THE MORNING THEN BECOMING MOSTLY SUNNY THEN BECOMING
PARTLY CLOUDY LATE IN THE AFTERNOON.
* MAX TEMPERATURE........87-92 LOWER ELEVATIONS...EXCEPT 80-86
HIGHER ELEVATIONS.
* MIN HUMIDITY...........17-23 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING NORTHWEST
UP TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING WEST UP
TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........7300 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ215-172030-
NORTHERN SACRAMENTO VALLEY TO SOUTHERN TEHAMA COUNTY LINE BELOW
1000 FT-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........62-67.
* 24 HR TREND..........4 DEGREES WARMER.
* MAX HUMIDITY...........44-55 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTH WINDS UP TO 7 MPH SHIFTING TO THE
NORTH UP TO 8 MPH AFTER MIDNIGHT.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........95-100.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........15-20 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........NORTH WINDS UP TO 8 MPH SHIFTING TO THE
SOUTHWEST UP TO 6 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........6100 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........64-69.
* MAX HUMIDITY...........39-54 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS UP TO 7 MPH.
* MIXING HEIGHT..........600 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............PARTLY CLOUDY IN THE MORNING THEN BECOMING
MOSTLY SUNNY.
* MAX TEMPERATURE........92-97.
* MIN HUMIDITY...........18-31 PERCENT.
* 20-FOOT WINDS..........NORTH WINDS UP TO 7 MPH SHIFTING TO THE
SOUTH UP TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4200 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ216-172030-
CENTRAL SACRAMENTO VALLEY IN GLENN, COLUSA, YUBA, NORTHERN
SUTTER, AND BUTTE COUNTY BELOW 1000 FT-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........59-66.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........54-69 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTH WINDS UP TO 6 MPH SHIFTING TO THE
NORTH UP TO 7 MPH AFTER MIDNIGHT.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........94-99.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........20-27 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........NORTHWEST WINDS UP TO 8 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5700 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........62-68.
* MAX HUMIDITY...........44-59 PERCENT.
* 20-FOOT WINDS..........SOUTHWEST WINDS UP TO 7 MPH SHIFTING TO
THE NORTH AFTER MIDNIGHT.
* MIXING HEIGHT..........500 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............PARTLY CLOUDY UNTIL LATE AFTERNOON THEN
BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE........89-94.
* MIN HUMIDITY...........24-39 PERCENT.
* 20-FOOT WINDS..........NORTH WINDS UP TO 7 MPH SHIFTING TO THE
SOUTHEAST 4 TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........3800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
CAZ217-172030-
SOUTHERN SACRAMENTO VALLEY IN YOLO-
SACRAMENTO FAR WESTERN PLACER, SOUTHERN SUTTER AND SOLANO COUNTY
BELOW 1000 FT-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........59-66.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........55-70 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTHWEST WINDS UP TO 7 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........400 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........96-101.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........18-23 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........NORTHWEST WINDS UP TO 8 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5700 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........63-69.
* MAX HUMIDITY...........44-59 PERCENT.
* 20-FOOT WINDS..........SOUTHWEST WINDS UP TO 8 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY CLOUDY.
* MAX TEMPERATURE........87-92.
* MIN HUMIDITY...........25-40 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........3400 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......4 PERCENT.
CAZ218-172030-
CARQUINEZ STRAIT AND DELTA-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........61-66.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........67-76 PERCENT.
* 24 HR TREND..........5 PERCENT DOWN.
* 20-FOOT WINDS..........WEST WINDS 5 TO 11 MPH WITH LOCAL GUSTS UP
TO 20 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........400 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........94-99.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........22-27 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........WEST WINDS 5 TO 11 MPH. LOCAL GUSTS UP TO
20 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........3900 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* MIN TEMPERATURE........63-68.
* MAX HUMIDITY...........67-82 PERCENT.
* 20-FOOT WINDS..........WEST WINDS 6 TO 12 MPH WITH LOCAL GUSTS UP
TO 20 MPH.
* MIXING HEIGHT..........500 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
LATE IN THE MORNING THEN BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE........81-89.
* MIN HUMIDITY...........54-69 PERCENT.
* 20-FOOT WINDS..........WEST WINDS 6 TO 12 MPH WITH LOCAL GUSTS UP
TO 20 MPH.
* MIXING HEIGHT..........2000 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......5 PERCENT.
CAZ219-172030-
NORTHERN SAN JOAQUIN VALLEY IN SAN JOAQUIN AND STANISLAUS
COUNTIES BELOW 1000 FT-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........63-69.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........48-63 PERCENT.
* 24 HR TREND..........6 PERCENT DOWN.
* 20-FOOT WINDS..........NORTHWEST WINDS 5 TO 11 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........95-100.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........19-24 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........NORTHWEST WINDS 7 TO 13 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5200 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY.
* MIN TEMPERATURE........67-72.
* MAX HUMIDITY...........39-54 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS 7 TO 13 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 CLOUDY.
* MAX TEMPERATURE........87-92.
* MIN HUMIDITY...........25-40 PERCENT.
* 20-FOOT WINDS..........WEST WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........3700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......5 PERCENT.
CAZ263-279-172030-
SOUTHEAST EDGE SHASTA-TRINITY NF AND WESTERN PORTIONS OF TEHAMA-
GLENN UNIT-EASTERN MENDOCINO NF-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........66-71 LOWER ELEVATIONS...EXCEPT 58-66
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........38-46 PERCENT.
* 24 HR TREND..........4 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS UP TO 8 MPH.
* RIDGES/UPR SLOPES....WEST WINDS UP TO 8 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........92-97 LOWER ELEVATIONS...EXCEPT 77-87
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........19-26 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHWEST WINDS UP TO 8 MPH IN THE MORNING
BECOMING UPSLOPE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5900 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........68-73 LOWER ELEVATIONS...EXCEPT 61-67
HIGHER ELEVATIONS.
* MAX HUMIDITY...........34-49 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........600 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............PARTLY CLOUDY EARLY IN THE MORNING THEN
BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE........90-95 LOWER ELEVATIONS...EXCEPT 74-84
HIGHER ELEVATIONS.
* MIN HUMIDITY...........24-39 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHWEST WINDS UP TO 8 MPH SHIFTING TO THE
EAST IN THE AFTERNOON.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON.
* MIXING HEIGHT..........5000 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......2 PERCENT.
CAZ266-172030-
NORTHERN SIERRA FOOTHILLS FROM 1000 TO 3000 FT. INCLUDES PORTIONS
OF SHASTA-TRINITY AND BUTTE UNITS-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........62-70.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........30-41 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 5 TO 11 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........88-94.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........16-21 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 8 TO 14 MPH IN THE MORNING
BECOMING UPSLOPE UP TO 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 5 TO 11 MPH IN THE MORNING
BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5700 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........66-72.
* MAX HUMIDITY...........29-44 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...DRAINAGE WINDS UP TO 5 MPH BECOMING
NORTHEAST 4 TO 9 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 5 MPH BECOMING EAST UP
TO 8 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........500 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............PARTLY CLOUDY.
* MAX TEMPERATURE........85-91.
* MIN HUMIDITY...........20-35 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 6 TO 12 MPH SHIFTING TO THE
SOUTHWEST UP TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST WINDS 4 TO 10 MPH SHIFTING TO THE
SOUTHWEST UP TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4100 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ220-267-172030-
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-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........63-68.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........38-44 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHEAST WINDS UP TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS UP TO 8 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........90-95.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........16-21 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHWEST WINDS UP TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS UP TO 7 MPH SHIFTING TO THE
WEST UP TO 8 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........6200 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR UNTIL EARLY MORNING THEN
BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE........65-70.
* MAX HUMIDITY...........32-47 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHEAST WINDS UP TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS UP TO 8 MPH SHIFTING TO THE
NORTHEAST UP TO 7 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........500 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY CLOUDY.
* MAX TEMPERATURE........84-89.
* MIN HUMIDITY...........21-36 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS UP TO 7 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST WINDS UP TO 7 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* MIXING HEIGHT..........3700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......3 PERCENT.
CAZ268-172030-
NORTHERN SIERRA INCLUDING LASSEN NP AND PLUMAS AND LASSEN NF/S
WEST OF THE SIERRA CREST (WEST OF EVANS PEAK-GRIZZLY PEAK-
BECKWORTH PEAK)-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........49-59.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........35-50 PERCENT...EXCEPT 52-67 PERCENT IN
THE HIGH MOUNTAIN VALLEYS.
* 24 HR TREND..........5 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS UP TO 8 MPH SHIFTING TO THE
NORTHEAST 4 TO 10 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 4 TO 10 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........300 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........80-88 LOWER ELEVATIONS...EXCEPT 74-81
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........17-23 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 5 TO 11 MPH SHIFTING TO THE
WEST UP TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST WINDS 5 TO 11 MPH SHIFTING TO THE
SOUTHWEST UP TO 8 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........6200 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........51-61.
* MAX HUMIDITY...........38-53 PERCENT...EXCEPT 52-67 PERCENT IN
THE HIGH MOUNTAIN VALLEYS.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS UP TO 7 MPH SHIFTING TO THE EAST
UP TO 8 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS UP TO 7 MPH SHIFTING TO THE EAST
UP TO 8 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........300 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............PARTLY CLOUDY UNTIL LATE AFTERNOON THEN
BECOMING MOSTLY CLOUDY.
* MAX TEMPERATURE........79-85 LOWER ELEVATIONS...EXCEPT 73-79
HIGHER ELEVATIONS.
* MIN HUMIDITY...........17-32 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS 4 TO 10 MPH SHIFTING TO THE
SOUTHWEST UP TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST WINDS 5 TO 11 MPH SHIFTING TO THE
SOUTHWEST UP TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........6700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
CAZ221-269-172030-
STANISLAUS NF WEST OF THE SIERRA CREST-
NORTHERN SIERRA INCLUDING THE TAHOE AND ELDORADO NF/S WEST OF THE
SIERRA CREST-
126 PM PDT TUE SEP 16 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........58-66 LOWER ELEVATIONS...EXCEPT 47-57
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........38-53 PERCENT.
* 24 HR TREND..........4 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........300 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........85-91 LOWER ELEVATIONS...EXCEPT 73-83
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........18-25 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS UP TO 8 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST WINDS 4 TO 9 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........6600 FT AGL.
* CHANCE OF THUNDER......2 PERCENT.
WEDNESDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR UNTIL EARLY MORNING THEN
BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE........60-68 LOWER ELEVATIONS...EXCEPT 49-59
HIGHER ELEVATIONS.
* MAX HUMIDITY...........38-53 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHWEST WINDS UP TO 8 MPH SHIFTING TO THE
NORTHEAST AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....NORTHWEST WINDS UP TO 8 MPH SHIFTING TO THE
EAST 5 TO 11 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........300 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
THURSDAY
* SKY/WEATHER............MOSTLY CLOUDY.
* MAX TEMPERATURE........80-86 LOWER ELEVATIONS...EXCEPT 68-78
HIGHER ELEVATIONS.
* MIN HUMIDITY...........22-37 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS UP TO 7 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST WINDS 5 TO 11 MPH SHIFTING TO THE
SOUTHWEST UP TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5100 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......5 PERCENT.
EXTENDED
...SHASTA COUNTY MOUNTAINS AND COASTAL RANGE
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS 53 TO 63. SOUTHWEST WINDS
UP TO 10 MPH.
FRIDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS 70 TO 80. SOUTHEAST WINDS UP TO 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS 51 TO 61. VARIABLE LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS 72 TO 81. VARIABLE LESS THAN 5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 50 TO 60. VARIABLE LESS THAN
5 MPH.
SUNDAY
SUNNY. HIGHS 76 TO 86. VARIABLE LESS THAN 5 MPH.
SUNDAY NIGHT
CLEAR. LOWS 52 TO 62. NORTHWEST WINDS UP TO
10 MPH.
...NORTHERN SIERRA AND LASSEN PARK
THURSDAY NIGHT
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS 52 TO 62. SOUTHEAST WINDS UP TO 10 MPH.
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. HIGHS 70 TO 77. SOUTHWEST WINDS UP TO
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
50 TO 60. VARIABLE LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. HIGHS
73 TO 81. VARIABLE LESS THAN 5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS 49 TO 59. VARIABLE LESS THAN 5 MPH.
SUNDAY
SUNNY. HIGHS 76 TO 85. VARIABLE LESS THAN 5 MPH.
SUNDAY NIGHT
CLEAR. LOWS 51 TO 61. VARIABLE LESS THAN 5 MPH.
...SIERRA NEVADA FOOTHILLS
THURSDAY NIGHT
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS 61 TO 66. SOUTHEAST WINDS UP TO 10 MPH.
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS 76 TO 82.
SOUTH WINDS UP TO 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS 60 TO 65. VARIABLE LESS THAN 5 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. HIGHS
80 TO 85. VARIABLE LESS THAN 5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 60 TO 65. VARIABLE LESS THAN
5 MPH.
SUNDAY
SUNNY. HIGHS 83 TO 89. VARIABLE LESS THAN 5 MPH.
SUNDAY NIGHT
CLEAR. LOWS 62 TO 67. VARIABLE LESS THAN 5 MPH.
...CENTRAL VALLEY AND DELTA
THURSDAY NIGHT
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS 62 TO 67. SOUTH WINDS 5 TO 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS 81 TO 86.
SOUTH WINDS 5 TO 15 MPH.
FRIDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS 60 TO 65. WEST WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. HIGHS
86 TO 91. VARIABLE LESS THAN 5 MPH.
SATURDAY NIGHT
CLEAR. LOWS 60 TO 65. VARIABLE LESS THAN 5 MPH.
SUNDAY
SUNNY. HIGHS 90 TO 95. NORTHWEST WINDS UP TO 10 MPH.
SUNDAY NIGHT
CLEAR. LOWS 62 TO 67. VARIABLE LESS THAN 5 MPH.
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