489
FNUS56 KSTO 172030
FWFSTO
FIRE WEATHER PLANNING FORECAST FOR INTERIOR NORTHERN CALIFORNIA
NATIONAL WEATHER SERVICE SACRAMENTO CA
130 PM PDT THU JUL 17 2025
DISCUSSION
SEASONABLE TEMPERATURES CONTINUE LATE WEEK INTO THE WEEKEND AS
DIURNAL WIND PATTERNS PERSIST, WITH TERRAIN INFLUENCES AT HIGHER
ELEVATIONS AND ONSHORE INFLUENCE ELSEWHERE. AS DRY WEATHER
CONTINUES, SLIGHTLY LOWER DAYTIME HUMIDITY IS EXPECTED OVER THE
WEEKEND. BELOW NORMAL TEMPERATURES AND BREEZIER ONSHORE WINDS THEN
ANTICIPATED BY EARLY NEXT WEEK.
CAZ213-182030-
EASTERN PORTION OF SHASTA-TRINITY NF-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............CLEAR. AREAS OF SMOKE.
* MIN TEMPERATURE........62-67 LOWER ELEVATIONS...EXCEPT 54-64
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........50-65 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 4 TO 9 MPH WITH LOCAL GUSTS
UP TO 20 MPH IN THE EVENING BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........700 FT AGL.
* CHANCE OF THUNDER......1 PERCENT.
FRIDAY
* SKY/WEATHER............SUNNY. AREAS OF SMOKE IN THE AFTERNOON.
* MAX TEMPERATURE........92-97 LOWER ELEVATIONS...EXCEPT 83-92
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........18-23 PERCENT.
* 24 HR TREND..........5 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTH UP
TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTH WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5500 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR. AREAS OF SMOKE UNTIL EARLY MORNING.
* MIN TEMPERATURE........63-68 LOWER ELEVATIONS...EXCEPT 56-66
HIGHER ELEVATIONS.
* MAX HUMIDITY...........49-64 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 9 MPH WITH LOCAL GUSTS
UP TO 20 MPH SHIFTING TO THE NORTHWEST UP TO 7 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........92-97 LOWER ELEVATIONS...EXCEPT 82-90
HIGHER ELEVATIONS.
* MIN HUMIDITY...........21-36 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTH UP
TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING SOUTH 4
TO 10 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5900 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ214-182030-
BURNEY BASIN AND NORTHEAST PLATEAU IN SHASTA COUNTY INCLUDING
NORTHWEST LASSEN NF NORTH OF LASSEN NP-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............CLEAR. AREAS OF SMOKE.
* MIN TEMPERATURE........48-57.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........58-70 PERCENT.
* 24 HR TREND..........4 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 10 MPH WITH LOCAL GUSTS UP
TO 20 MPH IN THE EVENING BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 4 TO 9 MPH. LOCAL GUSTS UP TO 20
MPH IN THE EVENING.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........1000 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY
* SKY/WEATHER............SUNNY. AREAS OF SMOKE.
* MAX TEMPERATURE........87-92 LOWER ELEVATIONS...EXCEPT 82-87
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........17-22 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING WEST 5 TO
11 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING WEST 5
TO 11 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........6500 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR. AREAS OF SMOKE UNTIL EARLY MORNING.
* MIN TEMPERATURE........50-58.
* MAX HUMIDITY...........47-62 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS 6 TO 12 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 11 MPH WITH LOCAL GUSTS UP
TO 25 MPH IN THE EVENING BECOMING VARIABLE UP TO 5 MPH.
* MIXING HEIGHT..........1000 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........87-92 LOWER ELEVATIONS...EXCEPT 81-87
HIGHER ELEVATIONS.
* MIN HUMIDITY...........19-27 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING WEST 4 TO
9 MPH WITH LOCAL GUSTS UP TO 20 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING WEST 4
TO 9 MPH WITH LOCAL GUSTS UP TO 20 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........8200 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ215-182030-
NORTHERN SACRAMENTO VALLEY TO SOUTHERN TEHAMA COUNTY LINE BELOW
1000 FT-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........61-68.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........63-78 PERCENT.
* 24 HR TREND..........8 PERCENT DOWN.
* 20-FOOT WINDS..........SOUTHEAST WINDS UP TO 8 MPH. LOCAL GUSTS
UP TO 20 MPH IN THE EVENING.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........700 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........95-100.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........18-25 PERCENT.
* 24 HR TREND..........6 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..........5600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........63-70.
* MAX HUMIDITY...........59-74 PERCENT.
* 20-FOOT WINDS..........SOUTHEAST WINDS 4 TO 9 MPH. LOCAL GUSTS UP
TO 20 MPH IN THE EVENING.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........94-100.
* MIN HUMIDITY...........20-35 PERCENT.
* 20-FOOT WINDS..........VARIABLE WINDS LESS THAN 5 MPH BECOMING
SOUTH 4 TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ216-182030-
CENTRAL SACRAMENTO VALLEY IN GLENN, COLUSA, YUBA, NORTHERN
SUTTER, AND BUTTE COUNTY BELOW 1000 FT-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........56-61.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........80-95 PERCENT.
* 24 HR TREND..........4 PERCENT DOWN.
* 20-FOOT WINDS..........SOUTHEAST WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........91-96.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........27-36 PERCENT.
* 24 HR TREND..........6 PERCENT DOWN.
* 20-FOOT WINDS..........SOUTHEAST WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........4200 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........56-62.
* MAX HUMIDITY...........67-82 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........500 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........91-96.
* MIN HUMIDITY...........26-41 PERCENT.
* 20-FOOT WINDS..........SOUTHEAST WINDS UP TO 7 MPH.
* MIXING HEIGHT..........3800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ217-182030-
SOUTHERN SACRAMENTO VALLEY IN YOLO-
SACRAMENTO FAR WESTERN PLACER, SOUTHERN SUTTER AND SOLANO COUNTY
BELOW 1000 FT-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........54-59.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........81-96 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTH WINDS 5 TO 11 MPH WITH LOCAL GUSTS
UP TO 20 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........90-95.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........28-35 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTHWEST WINDS 5 TO 11 MPH. LOCAL GUSTS
UP TO 20 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........3800 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........53-59.
* MAX HUMIDITY...........67-82 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 7 TO 13 MPH.
* MIXING HEIGHT..........600 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........89-94.
* MIN HUMIDITY...........25-40 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 4 TO 10 MPH.
* MIXING HEIGHT..........3100 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ218-182030-
CARQUINEZ STRAIT AND DELTA-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............CLEAR IN THE EVENING THEN BECOMING PARTLY
CLOUDY.
* MIN TEMPERATURE........55-60.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........89-94 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........WEST WINDS 10 TO 16 MPH WITH LOCAL GUSTS
UP TO 30 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........800 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY
* SKY/WEATHER............PARTLY CLOUDY IN THE MORNING THEN
CLEARING.
* MAX TEMPERATURE........80-89.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........35-48 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..........2100 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........54-59.
* MAX HUMIDITY...........77-92 PERCENT.
* 20-FOOT WINDS..........WEST WINDS 11 TO 17 MPH WITH LOCAL GUSTS
UP TO 30 MPH.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
SATURDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........78-88.
* MIN HUMIDITY...........50-65 PERCENT.
* 20-FOOT WINDS..........WEST WINDS 8 TO 14 MPH WITH LOCAL GUSTS UP
TO 25 MPH.
* MIXING HEIGHT..........2100 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ219-182030-
NORTHERN SAN JOAQUIN VALLEY IN SAN JOAQUIN AND STANISLAUS
COUNTIES BELOW 1000 FT-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........56-61.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........74-89 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........NORTHWEST WINDS 6 TO 12 MPH WITH LOCAL
GUSTS UP TO 20 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........700 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........90-95.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........27-34 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..........3600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........56-62.
* MAX HUMIDITY...........56-71 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS 7 TO 13 MPH.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........89-94.
* MIN HUMIDITY...........20-35 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........3300 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ263-279-182030-
SOUTHEAST EDGE SHASTA-TRINITY NF AND WESTERN PORTIONS OF TEHAMA-
GLENN UNIT-EASTERN MENDOCINO NF-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........64-69 LOWER ELEVATIONS...EXCEPT 58-63
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........46-56 PERCENT.
* 24 HR TREND..........9 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 4 TO 9 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 4 TO 9 MPH SHIFTING TO THE NORTH
UP TO 7 MPH AFTER MIDNIGHT.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........800 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........93-98 LOWER ELEVATIONS...EXCEPT 77-87
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........21-28 PERCENT.
* 24 HR TREND..........5 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHEAST
4 TO 9 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST WINDS UP TO 8 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5400 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........66-71 LOWER ELEVATIONS...EXCEPT 60-66
HIGHER ELEVATIONS.
* MAX HUMIDITY...........43-58 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 4 TO 9 MPH SHIFTING TO THE WEST
UP TO 7 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 10 MPH.
* MIXING HEIGHT..........900 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........92-97 LOWER ELEVATIONS...EXCEPT 77-87
HIGHER ELEVATIONS.
* MIN HUMIDITY...........21-29 PERCENT LOWER ELEVATIONS...EXCEPT
25-40 PERCENT HIGH ELEVATIONS.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHEAST
4 TO 9 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING
SOUTHEAST 4 TO 9 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5600 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ266-182030-
NORTHERN SIERRA FOOTHILLS FROM 1000 TO 3000 FT. INCLUDES PORTIONS
OF SHASTA-TRINITY AND BUTTE UNITS-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........61-67.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........49-64 PERCENT.
* 24 HR TREND..........7 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS UP TO 8 MPH WITH LOCAL GUSTS UP
TO 20 MPH IN THE EVENING BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 4 TO 9 MPH IN THE EVENING
BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........90-95 LOWER ELEVATIONS...EXCEPT 85-91
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........19-29 PERCENT.
* 24 HR TREND..........6 PERCENT DOWN.
* 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 4 TO 9 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5200 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........63-69.
* MAX HUMIDITY...........46-61 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 SHIFTING TO THE EAST
UP TO 7 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........600 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........89-94 LOWER ELEVATIONS...EXCEPT 84-90
HIGHER ELEVATIONS.
* MIN HUMIDITY...........21-36 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHEAST WINDS UP TO 7 MPH SHIFTING TO THE
SOUTHWEST 4 TO 9 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING
SOUTHWEST UP TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4500 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ220-267-182030-
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-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........58-65.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........58-72 PERCENT.
* 24 HR TREND..........7 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 EAST
AFTER MIDNIGHT.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........85-94.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........26-31 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS UP TO 8 MPH.
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING WEST 4
TO 9 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........4800 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........58-65.
* MAX HUMIDITY...........52-67 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS UP TO 8 MPH SHIFTING TO THE EAST
UP TO 7 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS UP TO 8 MPH SHIFTING TO THE EAST
UP TO 7 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........600 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........85-93.
* MIN HUMIDITY...........15-30 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 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........4300 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ268-182030-
NORTHERN SIERRA INCLUDING LASSEN NP AND PLUMAS AND LASSEN NF/S
WEST OF THE SIERRA CREST (WEST OF EVANS PEAK-GRIZZLY PEAK-
BECKWORTH PEAK)-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........48-60.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........50-65 PERCENT...EXCEPT 69-84 PERCENT IN
THE HIGH MOUNTAIN VALLEYS.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 10 MPH SHIFTING TO THE
EAST UP TO 7 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........700 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........79-88 LOWER ELEVATIONS...EXCEPT 73-81
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........20-30 PERCENT.
* 24 HR TREND..........4 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 10 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........5200 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........49-60.
* MAX HUMIDITY...........51-66 PERCENT...EXCEPT 65-80 PERCENT IN
THE HIGH MOUNTAIN VALLEYS.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 11 MPH SHIFTING TO THE
EAST UP TO 7 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........600 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........79-87 LOWER ELEVATIONS...EXCEPT 73-81
HIGHER ELEVATIONS.
* MIN HUMIDITY...........19-34 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS UP TO 7 MPH SHIFTING TO THE
SOUTHWEST 4 TO 9 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST WINDS UP TO 7 MPH SHIFTING TO THE
SOUTHWEST 5 TO 11 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........6400 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ221-269-182030-
STANISLAUS NF WEST OF THE SIERRA CREST-
NORTHERN SIERRA INCLUDING THE TAHOE AND ELDORADO NF/S WEST OF THE
SIERRA CREST-
130 PM PDT THU JUL 17 2025
TONIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........57-65 LOWER ELEVATIONS...EXCEPT 46-56
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........54-69 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS UP TO 8 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 11 MPH SHIFTING TO THE
SOUTHEAST UP TO 8 MPH AFTER MIDNIGHT.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........82-88 LOWER ELEVATIONS...EXCEPT 72-82
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........24-32 PERCENT.
* 24 HR TREND..........4 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHWEST
4 TO 9 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 11 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........4800 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
FRIDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........59-65 LOWER ELEVATIONS...EXCEPT 48-58
HIGHER ELEVATIONS.
* MAX HUMIDITY...........51-66 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 6 TO 12 MPH SHIFTING TO THE EAST
UP TO 8 MPH AFTER MIDNIGHT.
* MIXING HEIGHT..........300 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
SATURDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........82-88 LOWER ELEVATIONS...EXCEPT 71-81
HIGHER ELEVATIONS.
* MIN HUMIDITY...........20-35 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHWEST
4 TO 9 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS UP TO 8 MPH SHIFTING TO THE
SOUTHWEST 6 TO 12 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........5800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
EXTENDED
...SHASTA COUNTY MOUNTAINS AND COASTAL RANGE
SATURDAY NIGHT
CLEAR. LOWS 54 TO 64. WEST WINDS UP TO 10 MPH.
SUNDAY
SUNNY. HIGHS 78 TO 86. SOUTHEAST WINDS UP TO 13 MPH.
SUNDAY NIGHT
CLEAR. LOWS 52 TO 61. WEST WINDS UP TO 13 MPH.
MONDAY
SUNNY. HIGHS 73 TO 81. SOUTHWEST WINDS UP TO 10 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 58. SOUTHWEST WINDS UP
TO 10 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 70 TO 80. SOUTH WINDS UP TO
10 MPH.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 58. WEST WINDS UP TO
10 MPH.
...NORTHERN SIERRA AND LASSEN PARK
SATURDAY NIGHT
CLEAR. LOWS 52 TO 62. SOUTHEAST WINDS UP TO
10 MPH.
SUNDAY
SUNNY. HIGHS 78 TO 87. SOUTHWEST WINDS UP TO 13 MPH.
SUNDAY NIGHT
CLEAR. LOWS 51 TO 61. SOUTHEAST WINDS UP TO
13 MPH.
MONDAY
SUNNY. HIGHS 74 TO 82. SOUTHWEST WINDS 5 TO 15 MPH.
MONDAY NIGHT
CLEAR. LOWS 48 TO 58. SOUTHEAST WINDS UP TO
10 MPH.
TUESDAY
SUNNY. HIGHS 72 TO 81. SOUTHWEST WINDS UP TO 10 MPH.
TUESDAY NIGHT
CLEAR. LOWS 47 TO 57. VARIABLE LESS THAN 5 MPH.
...SIERRA NEVADA FOOTHILLS
SATURDAY NIGHT
CLEAR. LOWS 58 TO 65. EAST WINDS UP TO 10 MPH.
SUNDAY
SUNNY. HIGHS 85 TO 91. SOUTHWEST WINDS UP TO 10 MPH.
SUNDAY NIGHT
CLEAR. LOWS 58 TO 63. SOUTHEAST WINDS UP TO
10 MPH.
MONDAY
SUNNY. HIGHS 81 TO 86. SOUTHWEST WINDS UP TO 10 MPH.
MONDAY NIGHT
CLEAR. LOWS 55 TO 60. SOUTHEAST WINDS UP TO
10 MPH.
TUESDAY
SUNNY. HIGHS 79 TO 84. SOUTHWEST WINDS UP TO 10 MPH.
TUESDAY NIGHT
CLEAR. LOWS 55 TO 61. SOUTHEAST WINDS UP TO
10 MPH.
...CENTRAL VALLEY AND DELTA
SATURDAY NIGHT
CLEAR. LOWS 54 TO 59. SOUTH WINDS 5 TO 15 MPH.
SUNDAY
SUNNY. HIGHS 88 TO 93. SOUTHWEST WINDS UP TO 13 MPH.
SUNDAY NIGHT
CLEAR. LOWS 56 TO 61. SOUTH WINDS 5 TO 15 MPH.
MONDAY
SUNNY. HIGHS 84 TO 89. SOUTHWEST WINDS 5 TO 15 MPH.
MONDAY NIGHT
CLEAR. LOWS 54 TO 59. SOUTH WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 83 TO 88. SOUTHWEST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
CLEAR. LOWS 54 TO 59. SOUTHWEST WINDS 5 TO
10 MPH.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page