489  
FNUS56 KSTO 171926  
FWFSTO  
 
FIRE WEATHER PLANNING FORECAST FOR INTERIOR NORTHERN CALIFORNIA  
NATIONAL WEATHER SERVICE SACRAMENTO CA  
1226 PM PDT MON MAR 17 2025  
   
DISCUSSION
 
 
CONTINUED ACTIVE WEATHER THROUGH TONIGHT WITH SCATTERED  
THUNDERSTORMS THIS AFTERNOON AND EVENING ACROSS THE VALLEY AND  
ADJACENT FOOTHILLS. ADDITIONAL WEAK SYSTEMS THROUGH THE WORK WEEK WITH  
PERIODS OF MODERATE PRECIPITATION AND BREEZY WINDS WITH BREAKS OF  
DRY WEATHER IN BETWEEN WAVES.  
 
CAZ213-181930-  
EASTERN PORTION OF SHASTA-TRINITY NF-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR. AREAS OF FROST IN THE  
EVENING. WIDESPREAD FROST AFTER MIDNIGHT.  
* MIN TEMPERATURE........29-34 LOWER ELEVATIONS...EXCEPT 20-28  
HIGHER ELEVATIONS.  
* 24 HR TREND..........9 DEGREES COOLER.  
* MAX HUMIDITY...........73-88 PERCENT.  
* 24 HR TREND..........15 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 9 MPH.  
* RIDGES/UPR SLOPES....NORTH WINDS 4 TO 9 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...8 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY. WIDESPREAD FROST IN THE  
MORNING.  
* MAX TEMPERATURE........54-59 LOWER ELEVATIONS...EXCEPT 42-51  
HIGHER ELEVATIONS.  
* 24 HR TREND..........6 DEGREES WARMER.  
* MIN HUMIDITY...........34-41 PERCENT LOWER ELEVATIONS...EXCEPT  
41-53 PERCENT HIGH ELEVATIONS.  
* 24 HR TREND..........23 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH.  
* RIDGES/UPR SLOPES....NORTHEAST WINDS 4 TO 10 MPH SHIFTING TO THE  
SOUTHWEST UP TO 7 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR. AREAS OF FROST AFTER  
MIDNIGHT. WIDESPREAD FROST EARLY IN THE MORNING.  
* MIN TEMPERATURE........34-39 LOWER ELEVATIONS...EXCEPT 26-34  
HIGHER ELEVATIONS.  
* MAX HUMIDITY...........73-88 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...DRAINAGE WINDS UP TO 5 MPH.  
* RIDGES/UPR SLOPES....SOUTHWEST WINDS UP TO 8 MPH SHIFTING TO THE  
NORTHEAST UP TO 7 MPH AFTER MIDNIGHT.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............MOSTLY CLOUDY. WIDESPREAD FROST EARLY IN  
THE MORNING.  
* MAX TEMPERATURE........49-54 LOWER ELEVATIONS...EXCEPT 39-47  
HIGHER ELEVATIONS.  
* MIN HUMIDITY...........56-71 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTH 6  
TO 12 MPH WITH LOCAL GUSTS UP TO 25 MPH IN THE AFTERNOON.  
* RIDGES/UPR SLOPES....EAST WINDS UP TO 7 MPH INCREASING TO SOUTH  
10 TO 16 MPH WITH LOCAL GUSTS UP TO 30 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
CAZ214-181930-  
BURNEY BASIN AND NORTHEAST PLATEAU IN SHASTA COUNTY INCLUDING  
NORTHWEST LASSEN NF NORTH OF LASSEN NP-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............PARTLY CLOUDY. AT LOWER ELEVATIONS, A  
CHANCE OF SHOWERS IN THE EVENING. AT HIGHER ELEVATIONS, A CHANCE  
OF SNOW SHOWERS IN THE EVENING.  
* MIN TEMPERATURE........17-26.  
* 24 HR TREND..........10 DEGREES COOLER.  
* MAX HUMIDITY...........85-97 PERCENT.  
* 24 HR TREND..........5 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...WEST WINDS UP TO 7 MPH IN THE EVENING  
BECOMING DRAINAGE UP TO 5 MPH.  
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH IN THE EVENING  
BECOMING VARIABLE UP TO 5 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...7 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY.  
* MAX TEMPERATURE........46-51 LOWER ELEVATIONS...EXCEPT 40-45  
HIGHER ELEVATIONS.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........38-46 PERCENT.  
* 24 HR TREND..........28 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH.  
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR.  
* MIN TEMPERATURE........23-30.  
* MAX HUMIDITY...........74-89 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...DRAINAGE WINDS UP TO 5 MPH.  
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 5 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............MOSTLY CLOUDY.  
* MAX TEMPERATURE........48-53 LOWER ELEVATIONS...EXCEPT 43-48  
HIGHER ELEVATIONS.  
* MIN HUMIDITY...........38-53 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHWEST  
4 TO 10 MPH WITH LOCAL GUSTS UP TO 25 MPH IN THE AFTERNOON.  
* RIDGES/UPR SLOPES....SOUTHEAST WINDS UP TO 7 MPH INCREASING TO  
SOUTHWEST 10 TO 16 MPH WITH LOCAL GUSTS UP TO 30 MPH IN THE  
AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
CAZ215-181930-  
NORTHERN SACRAMENTO VALLEY TO SOUTHERN TEHAMA COUNTY LINE BELOW  
1000 FT-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............PARTLY CLOUDY WITH A CHANCE OF SHOWERS IN  
THE EVENING, THEN CLEAR AFTER MIDNIGHT. AREAS OF FROST AFTER  
MIDNIGHT.  
* MIN TEMPERATURE........32-37.  
* 24 HR TREND..........9 DEGREES COOLER.  
* MAX HUMIDITY...........77-90 PERCENT.  
* 24 HR TREND..........9 PERCENT DOWN.  
* 20-FOOT WINDS..........NORTHWEST WINDS UP TO 8 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...10 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY. AREAS OF FROST IN THE  
MORNING.  
* MAX TEMPERATURE........58-63.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........31-36 PERCENT.  
* 24 HR TREND..........28 PERCENT DOWN.  
* 20-FOOT WINDS..........NORTH WINDS UP TO 8 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR. AREAS OF FROST EARLY IN THE  
MORNING.  
* MIN TEMPERATURE........36-41.  
* MAX HUMIDITY...........71-86 PERCENT.  
* 20-FOOT WINDS..........SOUTH WINDS UP TO 6 MPH SHIFTING TO THE  
NORTH AFTER MIDNIGHT.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............PARTLY CLOUDY EARLY IN THE MORNING THEN  
BECOMING MOSTLY CLOUDY. AREAS OF FROST EARLY IN THE MORNING.  
* MAX TEMPERATURE........55-60.  
* MIN HUMIDITY...........45-60 PERCENT.  
* 20-FOOT WINDS..........NORTH WINDS UP TO 6 MPH INCREASING TO  
SOUTH 9 TO 15 MPH WITH LOCAL GUSTS UP TO 30 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
CAZ216-181930-  
CENTRAL SACRAMENTO VALLEY IN GLENN, COLUSA, YUBA, NORTHERN  
SUTTER, AND BUTTE COUNTY BELOW 1000 FT-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE  
EVENING.  
* MIN TEMPERATURE........33-38.  
* 24 HR TREND..........9 DEGREES COOLER.  
* MAX HUMIDITY...........80-94 PERCENT.  
* 24 HR TREND..........LITTLE CHANGE.  
* 20-FOOT WINDS..........NORTHWEST WINDS 6 TO 12 MPH. LOCAL GUSTS  
UP TO 20 MPH IN THE EVENING.  
* CWR....................10 PERCENT.  
* CHANCE OF THUNDER...11 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY. AREAS OF FROST IN THE  
MORNING.  
* MAX TEMPERATURE........58-63.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........35-42 PERCENT.  
* 24 HR TREND..........25 PERCENT DOWN.  
* 20-FOOT WINDS..........NORTHWEST WINDS UP TO 8 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR.  
* MIN TEMPERATURE........36-41.  
* MAX HUMIDITY...........73-88 PERCENT.  
* 20-FOOT WINDS..........NORTHEAST WINDS UP TO 7 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY EARLY IN THE MORNING THEN  
BECOMING MOSTLY CLOUDY. AREAS OF FROST EARLY IN THE MORNING.  
* MAX TEMPERATURE........57-62.  
* MIN HUMIDITY...........45-60 PERCENT.  
* 20-FOOT WINDS..........SOUTHEAST WINDS UP TO 6 MPH INCREASING TO  
SOUTH 10 TO 16 MPH WITH LOCAL GUSTS UP TO 25 MPH IN THE  
AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
CAZ217-181930-  
SOUTHERN SACRAMENTO VALLEY IN YOLO-  
SACRAMENTO FAR WESTERN PLACER, SOUTHERN SUTTER AND SOLANO COUNTY  
BELOW 1000 FT-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............PARTLY CLOUDY. A CHANCE OF SHOWERS AND A  
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.  
* MIN TEMPERATURE........37-42.  
* 24 HR TREND..........9 DEGREES COOLER.  
* MAX HUMIDITY...........85-99 PERCENT.  
* 24 HR TREND..........LITTLE CHANGE.  
* 20-FOOT WINDS..........NORTHWEST WINDS 6 TO 12 MPH. LOCAL GUSTS  
UP TO 20 MPH IN THE EVENING.  
* CWR....................10 PERCENT.  
* CHANCE OF THUNDER...15 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY.  
* MAX TEMPERATURE........58-63.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........38-47 PERCENT.  
* 24 HR TREND..........24 PERCENT DOWN.  
* 20-FOOT WINDS..........NORTHWEST WINDS 4 TO 9 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR. PATCHY FROST EARLY IN THE  
MORNING.  
* MIN TEMPERATURE........37-42.  
* MAX HUMIDITY...........74-89 PERCENT.  
* 20-FOOT WINDS..........NORTHWEST WINDS UP TO 7 MPH SHIFTING TO  
THE SOUTH UP TO 6 MPH AFTER MIDNIGHT.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY EARLY IN THE MORNING THEN  
BECOMING MOSTLY CLOUDY. PATCHY FROST EARLY IN THE MORNING.  
* MAX TEMPERATURE........58-63.  
* MIN HUMIDITY...........47-62 PERCENT.  
* 20-FOOT WINDS..........SOUTH WINDS 4 TO 9 MPH. LOCAL GUSTS UP TO  
20 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
CAZ218-181930-  
CARQUINEZ STRAIT AND DELTA-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR. A CHANCE OF SHOWERS IN THE  
EVENING.  
* MIN TEMPERATURE........37-42.  
* 24 HR TREND..........10 DEGREES COOLER.  
* MAX HUMIDITY...........81-88 PERCENT.  
* 24 HR TREND..........5 PERCENT DOWN.  
* 20-FOOT WINDS..........WEST WINDS 8 TO 14 MPH WITH LOCAL GUSTS UP  
TO 25 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...11 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY.  
* MAX TEMPERATURE........60-65.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........38-44 PERCENT.  
* 24 HR TREND..........22 PERCENT DOWN.  
* 20-FOOT WINDS..........NORTHWEST WINDS 4 TO 9 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR. PATCHY FROST EARLY IN THE  
MORNING.  
* MIN TEMPERATURE........36-41.  
* MAX HUMIDITY...........77-92 PERCENT.  
* 20-FOOT WINDS..........WEST WINDS 4 TO 9 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY EARLY IN THE MORNING THEN  
BECOMING MOSTLY CLOUDY. PATCHY FROST EARLY IN THE MORNING.  
* MAX TEMPERATURE........59-64.  
* MIN HUMIDITY...........48-63 PERCENT.  
* 20-FOOT WINDS..........SOUTH WINDS 4 TO 9 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
CAZ219-181930-  
NORTHERN SAN JOAQUIN VALLEY IN SAN JOAQUIN AND STANISLAUS  
COUNTIES BELOW 1000 FT-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND  
A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY  
CLOUDY AFTER MIDNIGHT.  
* MIN TEMPERATURE........39-44.  
* 24 HR TREND..........9 DEGREES COOLER.  
* MAX HUMIDITY...........83-98 PERCENT.  
* 24 HR TREND..........LITTLE CHANGE.  
* 20-FOOT WINDS..........WEST WINDS 10 TO 16 MPH WITH LOCAL GUSTS  
UP TO 30 MPH.  
* CWR....................10 PERCENT.  
* CHANCE OF THUNDER...15 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY.  
* MAX TEMPERATURE........57-62.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........39-51 PERCENT.  
* 24 HR TREND..........20 PERCENT DOWN.  
* 20-FOOT WINDS..........NORTHWEST WINDS 6 TO 12 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR. PATCHY FROST EARLY IN THE  
MORNING.  
* MIN TEMPERATURE........36-41.  
* MAX HUMIDITY...........73-88 PERCENT.  
* 20-FOOT WINDS..........NORTHWEST WINDS 5 TO 11 MPH. LOCAL GUSTS  
UP TO 20 MPH IN THE EVENING.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY  
IN THE LATE MORNING AND EARLY AFTERNOON THEN BECOMING MOSTLY  
CLOUDY. PATCHY FROST EARLY IN THE MORNING.  
* MAX TEMPERATURE........61-66.  
* MIN HUMIDITY...........42-57 PERCENT.  
* 20-FOOT WINDS..........SOUTHEAST WINDS UP TO 8 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
CAZ263-279-181930-  
SOUTHEAST EDGE SHASTA-TRINITY NF AND WESTERN PORTIONS OF TEHAMA-  
GLENN UNIT-EASTERN MENDOCINO NF-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............PARTLY CLOUDY.  
* MIN TEMPERATURE........32-37 LOWER ELEVATIONS...EXCEPT 21-29  
HIGHER ELEVATIONS.  
* 24 HR TREND..........6 DEGREES COOLER.  
* MAX HUMIDITY...........62-77 PERCENT.  
* 24 HR TREND..........17 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 11 TO 17 MPH.  
* RIDGES/UPR SLOPES....NORTHWEST WINDS 11 TO 17 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...8 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY.  
* MAX TEMPERATURE........54-59 LOWER ELEVATIONS...EXCEPT 38-48  
HIGHER ELEVATIONS.  
* 24 HR TREND..........4 DEGREES WARMER.  
* MIN HUMIDITY...........37-42 PERCENT LOWER ELEVATIONS...EXCEPT  
44-55 PERCENT HIGH ELEVATIONS.  
* 24 HR TREND..........14 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH IN THE MORNING  
BECOMING UPSLOPE UP TO 5 MPH.  
* RIDGES/UPR SLOPES....WEST WINDS 6 TO 12 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR.  
* MIN TEMPERATURE........36-41 LOWER ELEVATIONS...EXCEPT 28-34  
HIGHER ELEVATIONS.  
* MAX HUMIDITY...........66-81 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.  
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............MOSTLY CLOUDY.  
* MAX TEMPERATURE........51-56 LOWER ELEVATIONS...EXCEPT 38-46  
HIGHER ELEVATIONS.  
* MIN HUMIDITY...........49-64 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHEAST  
7 TO 13 MPH WITH LOCAL GUSTS UP TO 25 MPH IN THE AFTERNOON.  
* RIDGES/UPR SLOPES....SOUTH WINDS 5 TO 11 MPH INCREASING TO 13 TO  
19 MPH WITH LOCAL GUSTS UP TO 35 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
CAZ266-181930-  
NORTHERN SIERRA FOOTHILLS FROM 1000 TO 3000 FT. INCLUDES PORTIONS  
OF SHASTA-TRINITY AND BUTTE UNITS-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE  
EVENING. AREAS OF FROST AFTER MIDNIGHT.  
* MIN TEMPERATURE........28-36.  
* 24 HR TREND..........9 DEGREES COOLER.  
* MAX HUMIDITY...........78-87 PERCENT.  
* 24 HR TREND..........9 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...DRAINAGE WINDS UP TO 5 MPH BECOMING  
NORTHEAST UP TO 8 MPH AFTER MIDNIGHT.  
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 5 MPH BECOMING  
NORTHEAST UP TO 7 MPH AFTER MIDNIGHT.  
* CWR....................10 PERCENT.  
* CHANCE OF THUNDER...11 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY. WIDESPREAD FROST IN THE  
MORNING.  
* MAX TEMPERATURE........53-58 LOWER ELEVATIONS...EXCEPT 48-53  
HIGHER ELEVATIONS.  
* 24 HR TREND..........4 DEGREES WARMER.  
* MIN HUMIDITY...........35-49 PERCENT.  
* 24 HR TREND..........30 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...NORTHEAST WINDS UP TO 8 MPH SHIFTING TO THE  
WEST IN THE AFTERNOON.  
* RIDGES/UPR SLOPES....NORTHEAST WINDS UP TO 8 MPH SHIFTING TO THE  
WEST IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR.  
* MIN TEMPERATURE........33-41.  
* MAX HUMIDITY...........65-80 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...EAST WINDS UP TO 8 MPH.  
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 5 MPH BECOMING EAST UP  
TO 8 MPH AFTER MIDNIGHT.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............PARTLY CLOUDY EARLY IN THE MORNING THEN  
BECOMING MOSTLY CLOUDY.  
* MAX TEMPERATURE........48-56.  
* MIN HUMIDITY...........46-61 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 6 TO 12 MPH. LOCAL GUSTS UP  
TO 30 MPH IN THE AFTERNOON.  
* RIDGES/UPR SLOPES....SOUTH WINDS 6 TO 12 MPH. LOCAL GUSTS UP TO  
30 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
CAZ220-267-181930-  
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-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............SHOWERS AND A SLIGHT CHANCE OF  
THUNDERSTORMS IN THE EVENING. PATCHY FROST AFTER MIDNIGHT.  
* MIN TEMPERATURE........34-39 LOWER ELEVATIONS...EXCEPT 29-34  
HIGHER ELEVATIONS.  
* 24 HR TREND..........8 DEGREES COOLER.  
* MAX HUMIDITY...........95-100 PERCENT.  
* 24 HR TREND..........LITTLE CHANGE.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...SOUTH WINDS UP TO 7 MPH IN THE EVENING  
BECOMING DRAINAGE UP TO 5 MPH.  
* RIDGES/UPR SLOPES....SOUTH WINDS UP TO 7 MPH IN THE EVENING  
BECOMING VARIABLE UP TO 5 MPH.  
* CWR....................30 PERCENT.  
* CHANCE OF THUNDER...20 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY. AREAS OF FROST IN THE  
MORNING.  
* MAX TEMPERATURE........49-58.  
* 24 HR TREND..........5 DEGREES WARMER.  
* MIN HUMIDITY...........50-58 PERCENT.  
* 24 HR TREND..........28 PERCENT DOWN.  
* 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.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR. AREAS OF FROST AFTER  
MIDNIGHT.  
* MIN TEMPERATURE........32-39.  
* MAX HUMIDITY...........78-93 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...NORTH WINDS UP TO 8 MPH IN THE EVENING  
BECOMING DRAINAGE UP TO 5 MPH.  
* RIDGES/UPR SLOPES....NORTHEAST WINDS UP TO 8 MPH.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY  
LATE IN THE MORNING THEN BECOMING MOSTLY CLOUDY. AREAS OF FROST  
EARLY IN THE MORNING.  
* MAX TEMPERATURE........52-60.  
* MIN HUMIDITY...........49-64 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTH 4  
TO 9 MPH IN THE AFTERNOON.  
* RIDGES/UPR SLOPES....EAST WINDS UP TO 7 MPH SHIFTING TO THE SOUTH  
4 TO 10 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
CAZ268-181930-  
NORTHERN SIERRA INCLUDING LASSEN NP AND PLUMAS AND LASSEN NF/S  
WEST OF THE SIERRA CREST (WEST OF EVANS PEAK-GRIZZLY PEAK-  
BECKWORTH PEAK)-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............PARTLY CLOUDY. A CHANCE OF SNOW SHOWERS IN  
THE EVENING.  
* MIN TEMPERATURE........15-23 LOWER ELEVATIONS...EXCEPT 11-18  
HIGHER ELEVATIONS.  
* 24 HR TREND..........11 DEGREES COOLER.  
* MAX HUMIDITY...........79-94 PERCENT...EXCEPT 92-100 PERCENT IN  
THE HIGH MOUNTAIN VALLEYS.  
* 24 HR TREND..........9 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 11 MPH.  
* RIDGES/UPR SLOPES....NORTH WINDS 5 TO 11 MPH.  
* CWR....................10 PERCENT.  
* CHANCE OF THUNDER...10 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY.  
* MAX TEMPERATURE........40-45 LOWER ELEVATIONS...EXCEPT 33-40  
HIGHER ELEVATIONS.  
* 24 HR TREND..........4 DEGREES WARMER.  
* MIN HUMIDITY...........45-57 PERCENT.  
* 24 HR TREND..........23 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 4 TO 9 MPH SHIFTING TO THE  
SOUTHWEST UP TO 8 MPH IN THE AFTERNOON.  
* RIDGES/UPR SLOPES....NORTHEAST WINDS UP TO 8 MPH SHIFTING TO THE  
WEST 4 TO 9 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR.  
* MIN TEMPERATURE........19-29.  
* MAX HUMIDITY...........73-88 PERCENT...EXCEPT 82-97 PERCENT IN  
THE HIGH MOUNTAIN VALLEYS.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS UP TO 8 MPH SHIFTING TO THE  
EAST 4 TO 9 MPH AFTER MIDNIGHT.  
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 9 MPH SHIFTING TO THE  
EAST AFTER MIDNIGHT.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............PARTLY CLOUDY EARLY IN THE MORNING THEN  
BECOMING MOSTLY CLOUDY.  
* MAX TEMPERATURE........42-47 LOWER ELEVATIONS...EXCEPT 35-41  
HIGHER ELEVATIONS.  
* MIN HUMIDITY...........47-62 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 7 TO 13 MPH. LOCAL GUSTS UP  
TO 30 MPH IN THE AFTERNOON.  
* RIDGES/UPR SLOPES....BREEZY. SOUTHEAST WINDS 6 TO 12 MPH  
INCREASING TO SOUTH 13 TO 25 MPH WITH LOCAL GUSTS UP TO 35 MPH  
IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
CAZ221-269-181930-  
STANISLAUS NF WEST OF THE SIERRA CREST-  
NORTHERN SIERRA INCLUDING THE TAHOE AND ELDORADO NF/S WEST OF THE  
SIERRA CREST-  
1226 PM PDT MON MAR 17 2025  
   
TONIGHT
 
 
* SKY/WEATHER............HEAVY SNOW SHOWERS AND A SLIGHT CHANCE OF  
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY WITH A SLIGHT  
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.  
* MIN TEMPERATURE........24-29 LOWER ELEVATIONS...EXCEPT 11-21  
HIGHER ELEVATIONS.  
* 24 HR TREND..........9 DEGREES COOLER.  
* MAX HUMIDITY...........85-100 PERCENT.  
* 24 HR TREND..........LITTLE CHANGE.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...SOUTH WINDS UP TO 7 MPH IN THE EVENING  
BECOMING DRAINAGE UP TO 5 MPH.  
* RIDGES/UPR SLOPES....WEST WINDS 9 TO 15 MPH WITH LOCAL GUSTS UP  
TO 30 MPH SHIFTING TO THE NORTH 4 TO 10 MPH AFTER MIDNIGHT.  
* CWR....................30 PERCENT.  
* CHANCE OF THUNDER...14 PERCENT.  
   
TUESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY.  
* MAX TEMPERATURE........43-48 LOWER ELEVATIONS...EXCEPT 33-42  
HIGHER ELEVATIONS.  
* 24 HR TREND..........4 DEGREES WARMER.  
* MIN HUMIDITY...........54-64 PERCENT LOWER ELEVATIONS...EXCEPT  
40-55 PERCENT HIGH ELEVATIONS.  
* 24 HR TREND..........29 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING WEST UP  
TO 8 MPH IN THE AFTERNOON.  
* RIDGES/UPR SLOPES....NORTHEAST WINDS UP TO 8 MPH SHIFTING TO THE  
WEST 4 TO 9 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
TUESDAY NIGHT
 
 
* SKY/WEATHER............MOSTLY CLEAR.  
* MIN TEMPERATURE........28-33 LOWER ELEVATIONS...EXCEPT 17-25  
HIGHER ELEVATIONS.  
* MAX HUMIDITY...........66-81 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...NORTHEAST WINDS UP TO 7 MPH.  
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH SHIFTING TO THE EAST  
AFTER MIDNIGHT.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
   
WEDNESDAY
 
 
* SKY/WEATHER............MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY  
LATE IN THE MORNING THEN BECOMING MOSTLY CLOUDY.  
* MAX TEMPERATURE........47-53 LOWER ELEVATIONS...EXCEPT 35-45  
HIGHER ELEVATIONS.  
* MIN HUMIDITY...........44-59 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTH 5  
TO 11 MPH IN THE AFTERNOON.  
* RIDGES/UPR SLOPES....SOUTH WINDS 7 TO 13 MPH. LOCAL GUSTS UP TO  
30 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER...0 PERCENT.  
 

 
 
   
EXTENDED
 
 
 
...SHASTA COUNTY MOUNTAINS AND COASTAL RANGE   
WEDNESDAY NIGHT
 
SHOWERS AND A CHANCE OF SNOW SHOWERS. LOWS  
26 TO 34. SOUTHWEST WINDS 10 TO 20 MPH.    
THURSDAY
 
MOSTLY CLOUDY WITH A CHANCE OF SNOW SHOWERS AND  
SHOWERS. HIGHS 41 TO 50. SOUTHWEST WINDS UP TO 13 MPH.    
THURSDAY NIGHT
 
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND SNOW  
SHOWERS. LOWS 28 TO 37. WEST WINDS UP TO 13 MPH.    
FRIDAY
 
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND SNOW  
SHOWERS. HIGHS 43 TO 51. WEST WINDS UP TO 10 MPH.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND SNOW  
SHOWERS. LOWS 30 TO 39. WEST WINDS UP TO 10 MPH.    
SATURDAY
 
NOT AS COOL. MOSTLY CLOUDY WITH A CHANCE OF SNOW  
SHOWERS AND A SLIGHT CHANCE OF SHOWERS. HIGHS 49 TO 58. NORTHWEST  
WINDS UP TO 10 MPH.    
SATURDAY NIGHT
 
PARTLY CLOUDY. LOWS 31 TO 41. NORTHWEST WINDS  
UP TO 10 MPH.  
 
...NORTHERN SIERRA AND LASSEN PARK   
WEDNESDAY NIGHT
 
SHOWERS AND SNOW SHOWERS LIKELY. LOWS 29 TO  
37. SOUTH WINDS 8 TO 18 MPH.    
THURSDAY
 
SNOW SHOWERS LIKELY AND A CHANCE OF SHOWERS. HIGHS  
42 TO 52. SOUTHWEST WINDS UP TO 10 MPH.    
THURSDAY NIGHT
 
PARTLY CLOUDY. LOWS 26 TO 36. NORTHEAST WINDS  
UP TO 10 MPH.    
FRIDAY
 
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND SNOW  
SHOWERS. HIGHS 46 TO 54. VARIABLE LESS THAN 5 MPH.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND SNOW  
SHOWERS. LOWS 30 TO 38. VARIABLE LESS THAN 5 MPH.    
SATURDAY
 
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND  
SNOW SHOWERS. HIGHS 51 TO 59. VARIABLE LESS THAN 5 MPH.    
SATURDAY NIGHT
 
PARTLY CLOUDY. LOWS 31 TO 41. VARIABLE LESS  
THAN 5 MPH.  
 
...SIERRA NEVADA FOOTHILLS   
WEDNESDAY NIGHT
 
SHOWERS LIKELY. LOWS 38 TO 43. SOUTHEAST WINDS  
5 TO 15 MPH.    
THURSDAY
 
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS 52 TO  
59. SOUTHWEST WINDS UP TO 10 MPH.    
THURSDAY NIGHT
 
PARTLY CLOUDY. LOWS 36 TO 41. NORTHEAST WINDS  
UP TO 10 MPH.    
FRIDAY
 
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. HIGHS  
54 TO 60. VARIABLE LESS THAN 5 MPH.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.  
LOWS 38 TO 43. VARIABLE LESS THAN 5 MPH.    
SATURDAY
 
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. HIGHS  
59 TO 64. NORTHWEST WINDS UP TO 10 MPH.    
SATURDAY NIGHT
 
PARTLY CLOUDY. LOWS 40 TO 45. VARIABLE LESS  
THAN 5 MPH.  
 
...CENTRAL VALLEY AND DELTA   
WEDNESDAY NIGHT
 
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS  
41 TO 46. SOUTH WINDS 5 TO 15 MPH.    
THURSDAY
 
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. HIGHS  
62 TO 67. NORTHWEST WINDS UP TO 13 MPH.    
THURSDAY NIGHT
 
PARTLY CLOUDY. LOWS 41 TO 46. NORTHWEST WINDS  
UP TO 13 MPH.    
FRIDAY
 
MOSTLY CLOUDY. HIGHS 62 TO 67. NORTHWEST WINDS UP TO  
10 MPH.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 43 TO 48. NORTHWEST WINDS UP  
TO 10 MPH.    
SATURDAY
 
MOSTLY CLOUDY. HIGHS 67 TO 72. NORTHWEST WINDS 5 TO  
15 MPH.    
SATURDAY NIGHT
 
MOSTLY CLEAR. LOWS 43 TO 48. NORTHWEST WINDS  
5 TO 10 MPH.  
 

 
 
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