563  
FNUS56 KSTO 180731  
FWFSTO  
 
FIRE WEATHER PLANNING FORECAST FOR INTERIOR NORTHERN CALIFORNIA  
NATIONAL WEATHER SERVICE SACRAMENTO CA  
1230 AM PDT FRI JUL 18 2025  
 
NOTE: THIS PRODUCT HAS UPDATED FORECAST DATA BUT THE FORECAST  
DISCUSSION IS FROM THE PREVIOUS DAY.  
 
   
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.  
 
CAZ213-190000-  
EASTERN PORTION OF SHASTA-TRINITY NF-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............SUNNY. AREAS OF SMOKE IN THE AFTERNOON.  
* MAX TEMPERATURE........93-98 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....SOUTHWEST WINDS 4 TO 9 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........5600 FT AGL.  
* CHANCE OF THUNDER......1 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER............CLEAR. AREAS OF SMOKE IN THE EVENING.  
* MIN TEMPERATURE........63-68 LOWER ELEVATIONS...EXCEPT 55-65  
HIGHER ELEVATIONS.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........46-61 PERCENT.  
* 24 HR TREND..........4 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 IN THE EVENING  
BECOMING VARIABLE UP TO 5 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........700 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........93-98 LOWER ELEVATIONS...EXCEPT 83-91  
HIGHER ELEVATIONS.  
* MIN HUMIDITY...........19-33 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.  
 
 
 
CAZ214-190000-  
BURNEY BASIN AND NORTHEAST PLATEAU IN SHASTA COUNTY INCLUDING  
NORTHWEST LASSEN NF NORTH OF LASSEN NP-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............SUNNY. AREAS OF SMOKE.  
* MAX TEMPERATURE........88-93 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..........6900 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER............CLEAR. AREAS OF SMOKE.  
* MIN TEMPERATURE........49-58.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........51-62 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....SOUTHWEST WINDS 4 TO 10 MPH WITH LOCAL GUSTS  
UP TO 20 MPH IN THE EVENING BECOMING VARIABLE UP TO 5 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........900 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........88-93 LOWER ELEVATIONS...EXCEPT 81-87  
HIGHER ELEVATIONS.  
* MIN HUMIDITY...........17-25 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..........7900 FT AGL.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER......0 PERCENT.  
 
 
 
CAZ215-190000-  
NORTHERN SACRAMENTO VALLEY TO SOUTHERN TEHAMA COUNTY LINE BELOW  
1000 FT-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........95-101.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........19-26 PERCENT.  
* 24 HR TREND..........5 PERCENT DOWN.  
* 20-FOOT WINDS..........WEST WINDS UP TO 6 MPH SHIFTING TO THE  
SOUTH 5 TO 11 MPH WITH LOCAL GUSTS UP TO 20 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........5500 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER............CLEAR.  
* MIN TEMPERATURE........63-69.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........57-72 PERCENT.  
* 24 HR TREND..........7 PERCENT DOWN.  
* 20-FOOT WINDS..........SOUTHEAST WINDS 4 TO 9 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........600 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........94-101.  
* MIN HUMIDITY...........19-34 PERCENT.  
* 20-FOOT WINDS..........VARIABLE WINDS LESS THAN 5 MPH BECOMING  
SOUTH 4 TO 9 MPH IN THE AFTERNOON.  
* MIXING HEIGHT..........4900 FT AGL.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER......0 PERCENT.  
 
 
 
CAZ216-190000-  
CENTRAL SACRAMENTO VALLEY IN GLENN, COLUSA, YUBA, NORTHERN  
SUTTER, AND BUTTE COUNTY BELOW 1000 FT-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........92-97.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........27-37 PERCENT.  
* 24 HR TREND..........6 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..........4100 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER............CLEAR.  
* MIN TEMPERATURE........57-62.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........75-90 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.  
   
SATURDAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........92-97.  
* MIN HUMIDITY...........24-39 PERCENT.  
* 20-FOOT WINDS..........SOUTHEAST WINDS UP TO 8 MPH.  
* MIXING HEIGHT..........3500 FT AGL.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER......0 PERCENT.  
 
 
 
CAZ217-190000-  
SOUTHERN SACRAMENTO VALLEY IN YOLO-  
SACRAMENTO FAR WESTERN PLACER, SOUTHERN SUTTER AND SOLANO COUNTY  
BELOW 1000 FT-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............MOSTLY SUNNY.  
* MAX TEMPERATURE........90-95.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........27-34 PERCENT.  
* 24 HR TREND..........LITTLE CHANGE.  
* 20-FOOT WINDS..........SOUTHWEST WINDS 4 TO 10 MPH. LOCAL GUSTS  
UP TO 20 MPH IN THE AFTERNOON.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........4000 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER............MOSTLY CLEAR.  
* MIN TEMPERATURE........53-58.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........80-95 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.  
   
SATURDAY  
 
* SKY/WEATHER............MOSTLY SUNNY.  
* MAX TEMPERATURE........90-95.  
* MIN HUMIDITY...........24-39 PERCENT.  
* 20-FOOT WINDS..........SOUTH WINDS 4 TO 10 MPH.  
* MIXING HEIGHT..........3100 FT AGL.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER......0 PERCENT.  
 
 
 
CAZ218-190000-  
CARQUINEZ STRAIT AND DELTA-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............PARTLY CLOUDY IN THE MORNING THEN  
CLEARING.  
* MAX TEMPERATURE........81-89.  
* 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..........2300 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER............CLEAR IN THE EVENING THEN BECOMING PARTLY  
CLOUDY.  
* MIN TEMPERATURE........54-59.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........87-94 PERCENT.  
* 24 HR TREND..........LITTLE CHANGE.  
* 20-FOOT WINDS..........WEST WINDS 10 TO 16 MPH WITH LOCAL GUSTS  
UP TO 25 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........700 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER............MOSTLY SUNNY.  
* MAX TEMPERATURE........79-89.  
* MIN HUMIDITY...........49-64 PERCENT.  
* 20-FOOT WINDS..........WEST WINDS 8 TO 14 MPH WITH LOCAL GUSTS UP  
TO 25 MPH.  
* MIXING HEIGHT..........1900 FT AGL.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER......0 PERCENT.  
 
 
 
CAZ219-190000-  
NORTHERN SAN JOAQUIN VALLEY IN SAN JOAQUIN AND STANISLAUS  
COUNTIES BELOW 1000 FT-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........91-96.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........28-34 PERCENT.  
* 24 HR TREND..........LITTLE CHANGE.  
* 20-FOOT WINDS..........NORTHWEST WINDS 6 TO 12 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........3700 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER............CLEAR.  
* MIN TEMPERATURE........55-61.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........68-83 PERCENT.  
* 24 HR TREND..........5 PERCENT DOWN.  
* 20-FOOT WINDS..........NORTHWEST WINDS 6 TO 12 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........600 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........90-95.  
* MIN HUMIDITY...........19-34 PERCENT.  
* 20-FOOT WINDS..........NORTHWEST WINDS 5 TO 11 MPH.  
* MIXING HEIGHT..........3000 FT AGL.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER......0 PERCENT.  
 
 
 
CAZ263-279-190000-  
SOUTHEAST EDGE SHASTA-TRINITY NF AND WESTERN PORTIONS OF TEHAMA-  
GLENN UNIT-EASTERN MENDOCINO NF-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........93-98 LOWER ELEVATIONS...EXCEPT 78-88  
HIGHER ELEVATIONS.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........22-29 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 4 TO 9 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........5400 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER............CLEAR.  
* MIN TEMPERATURE........66-71 LOWER ELEVATIONS...EXCEPT 59-65  
HIGHER ELEVATIONS.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........46-55 PERCENT.  
* 24 HR TREND..........LITTLE CHANGE.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...SOUTH WINDS UP TO 8 MPH IN THE EVENING  
BECOMING DRAINAGE UP TO 5 MPH.  
* RIDGES/UPR SLOPES....WEST WINDS UP TO 8 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........800 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........93-98 LOWER ELEVATIONS...EXCEPT 78-88  
HIGHER ELEVATIONS.  
* MIN HUMIDITY...........23-38 PERCENT.  
* 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..........5600 FT AGL.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER......0 PERCENT.  
 
 
 
CAZ266-190000-  
NORTHERN SIERRA FOOTHILLS FROM 1000 TO 3000 FT. INCLUDES PORTIONS  
OF SHASTA-TRINITY AND BUTTE UNITS-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........90-95 LOWER ELEVATIONS...EXCEPT 85-91  
HIGHER ELEVATIONS.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........19-28 PERCENT.  
* 24 HR TREND..........5 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHWEST  
5 TO 11 MPH IN THE AFTERNOON.  
* RIDGES/UPR SLOPES....VARIABLE WINDS UP TO 7 MPH BECOMING  
SOUTHWEST 4 TO 9 MPH WITH LOCAL GUSTS UP TO 20 MPH IN THE  
AFTERNOON.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........5100 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER............CLEAR.  
* MIN TEMPERATURE........62-68.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........43-56 PERCENT.  
* 24 HR TREND..........6 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...EAST WINDS UP TO 8 MPH.  
* RIDGES/UPR SLOPES....EAST WINDS UP TO 8 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........600 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........90-95 LOWER ELEVATIONS...EXCEPT 85-91  
HIGHER ELEVATIONS.  
* MIN HUMIDITY...........20-35 PERCENT.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...NORTH 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.  
 
 
 
CAZ220-267-190000-  
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-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........86-94.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........25-30 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..........5000 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER............CLEAR.  
* MIN TEMPERATURE........58-65.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........54-68 PERCENT.  
* 24 HR TREND..........4 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...SOUTHWEST 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.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........600 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........86-94.  
* MIN HUMIDITY...........14-28 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..........4000 FT AGL.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER......0 PERCENT.  
 
 
 
CAZ268-190000-  
NORTHERN SIERRA INCLUDING LASSEN NP AND PLUMAS AND LASSEN NF/S  
WEST OF THE SIERRA CREST (WEST OF EVANS PEAK-GRIZZLY PEAK-  
BECKWORTH PEAK)-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........80-88 LOWER ELEVATIONS...EXCEPT 73-82  
HIGHER ELEVATIONS.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........21-30 PERCENT.  
* 24 HR TREND..........4 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 10 MPH.  
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 10 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........5200 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
TONIGHT  
 
* SKY/WEATHER............CLEAR.  
* MIN TEMPERATURE........48-60.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........44-59 PERCENT...EXCEPT 64-79 PERCENT IN  
THE HIGH MOUNTAIN VALLEYS.  
* 24 HR TREND..........4 PERCENT DOWN.  
* 20-FOOT WINDS..........  
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 9 MPH SHIFTING TO THE  
EAST UP TO 7 MPH AFTER MIDNIGHT.  
* RIDGES/UPR SLOPES....SOUTH WINDS 4 TO 9 MPH.  
* CWR....................0 PERCENT.  
* MIXING HEIGHT..........600 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........79-87 LOWER ELEVATIONS...EXCEPT 73-81  
HIGHER ELEVATIONS.  
* MIN HUMIDITY...........17-32 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..........6200 FT AGL.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER......0 PERCENT.  
 
 
 
CAZ221-269-190000-  
STANISLAUS NF WEST OF THE SIERRA CREST-  
NORTHERN SIERRA INCLUDING THE TAHOE AND ELDORADO NF/S WEST OF THE  
SIERRA CREST-  
1230 AM PDT FRI JUL 18 2025  
   
TODAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........83-88 LOWER ELEVATIONS...EXCEPT 72-82  
HIGHER ELEVATIONS.  
* 24 HR TREND..........LITTLE CHANGE.  
* MIN HUMIDITY...........23-30 PERCENT.  
* 24 HR TREND..........5 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.  
   
TONIGHT  
 
* SKY/WEATHER............CLEAR.  
* MIN TEMPERATURE........57-65 LOWER ELEVATIONS...EXCEPT 47-57  
HIGHER ELEVATIONS.  
* 24 HR TREND..........LITTLE CHANGE.  
* MAX HUMIDITY...........49-64 PERCENT.  
* 24 HR TREND..........4 PERCENT DOWN.  
* 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..........500 FT AGL.  
* CHANCE OF THUNDER......0 PERCENT.  
   
SATURDAY  
 
* SKY/WEATHER............SUNNY.  
* MAX TEMPERATURE........83-89 LOWER ELEVATIONS...EXCEPT 71-81  
HIGHER ELEVATIONS.  
* MIN HUMIDITY...........19-34 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..........5700 FT AGL.  
* CWR....................0 PERCENT.  
* CHANCE OF THUNDER......0 PERCENT.  
 
 
 
   
EXTENDED  
 
 
...SHASTA COUNTY MOUNTAINS AND COASTAL RANGE   
SATURDAY NIGHT  
CLEAR. LOWS 55 TO 65. WEST WINDS UP TO 10 MPH.    
SUNDAY  
SUNNY. HIGHS 79 TO 88. SOUTHEAST WINDS UP TO 13 MPH.    
SUNDAY NIGHT  
MOSTLY CLEAR. LOWS 53 TO 61. WEST WINDS UP TO  
13 MPH.    
MONDAY  
MOSTLY SUNNY. HIGHS 72 TO 81. SOUTHWEST WINDS UP TO  
10 MPH.    
MONDAY NIGHT  
MOSTLY CLEAR. LOWS 50 TO 58. SOUTHWEST WINDS UP  
TO 10 MPH.    
TUESDAY  
MOSTLY SUNNY. HIGHS 70 TO 79. SOUTH WINDS UP TO  
10 MPH.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS 50 TO 59. SOUTHWEST 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 80 TO 88. SOUTHWEST WINDS UP TO 13 MPH.    
SUNDAY NIGHT  
CLEAR. LOWS 51 TO 61. SOUTHEAST WINDS UP TO  
13 MPH.    
MONDAY  
SUNNY. HIGHS 73 TO 82. SOUTHWEST WINDS 5 TO 15 MPH.    
MONDAY NIGHT  
MOSTLY CLEAR. LOWS 48 TO 58. SOUTHEAST WINDS UP  
TO 10 MPH.    
TUESDAY  
MOSTLY SUNNY. HIGHS 72 TO 81. SOUTHWEST WINDS UP TO  
10 MPH.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS 48 TO 58. VARIABLE LESS THAN  
5 MPH.  
 
...SIERRA NEVADA FOOTHILLS   
SATURDAY NIGHT  
CLEAR. LOWS 59 TO 66. EAST WINDS UP TO 10 MPH.    
SUNDAY  
SUNNY. HIGHS 86 TO 92. SOUTHWEST WINDS UP TO 10 MPH.    
SUNDAY NIGHT  
CLEAR. LOWS 59 TO 64. SOUTHEAST WINDS UP TO  
10 MPH.    
MONDAY  
SUNNY. HIGHS 81 TO 86. SOUTHWEST WINDS UP TO 10 MPH.    
MONDAY NIGHT  
MOSTLY CLEAR. LOWS 55 TO 60. SOUTHEAST WINDS UP  
TO 10 MPH.    
TUESDAY  
MOSTLY SUNNY. HIGHS 79 TO 84. SOUTHWEST WINDS UP TO  
10 MPH.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS 55 TO 61. SOUTHEAST WINDS UP  
TO 10 MPH.  
 
...CENTRAL VALLEY AND DELTA   
SATURDAY NIGHT  
CLEAR. LOWS 54 TO 61. SOUTH WINDS 5 TO 15 MPH.    
SUNDAY  
SUNNY. HIGHS 90 TO 95. SOUTHWEST WINDS UP TO 13 MPH.    
SUNDAY NIGHT  
CLEAR. LOWS 56 TO 61. SOUTH WINDS 8 TO 18 MPH.    
MONDAY  
SUNNY. HIGHS 84 TO 89. SOUTHWEST WINDS 5 TO 15 MPH.    
MONDAY NIGHT  
MOSTLY CLEAR. LOWS 55 TO 60. SOUTH WINDS 5 TO  
15 MPH.    
TUESDAY  
MOSTLY SUNNY. HIGHS 82 TO 87. SOUTHWEST WINDS 5 TO  
10 MPH.    
TUESDAY NIGHT  
MOSTLY CLEAR. LOWS 54 TO 59. SOUTH WINDS 5 TO  
10 MPH.  
 
 
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