451  
FNUS86 KSTO 212144  
FWLSTO  
 
ECCDA DISCUSSIONS FOR CALIFORNIA  
NATIONAL WEATHER SERVICE SACRAMENTO CA  
244 PM PDT TUE JUL 21 2026  
 
ECC005-221545-  
SHASTA-TRINITY NATIONAL FOREST-  
DISCUSSION FOR REDDING ECC DISPATCH  
244 PM PDT TUE JUL 21 2026  
 
...MOUNTAIN SHOWERS AND ISOLATED THUNDERSTORMS POSSIBLE TODAY  
THROUGH WEDNESDAY, WITH HIGHEST POTENTIAL IN THE SIERRA SOUTH OF  
I-80...  
 
HIGHER THAN NORMAL TEMPERATURES TODAY, FOLLOWED BY NEAR NORMAL  
CONDITIONS THE REMAINDER OF THIS WEEK. MONSOONAL AND REMNANT  
TROPICAL MOISTURE CONTINUE TO PUSH INTO THE REGION, BRINGING  
CHANCES FOR SHOWERS AND MOUNTAIN THUNDERSTORMS THROUGH WEDNESDAY.  
HIGHEST CHANCES FOR THUNDERSTORMS ARE THIS AFTERNOON ALONG THE  
SOUTHERN CASCADES AND SIERRA CREST, AROUND 20 TO 40%, WITH BEST  
POTENTIAL SOUTH OF I-80. THUNDERSTORM CHANCES IN THAT AREA  
DECREASE TO 10 TO 20% IN THE AFTERNOON ON WEDNESDAY, HIGHEST  
SOUTH OF US 50. WEDNESDAY WILL ALSO SEE BREEZY TO GUSTY WINDS IN  
THE NORTHERN SACRAMENTO VALLEY AS WELL AS ALONG THE FAR WESTERN  
EDGE OF THE SACRAMENTO VALLEY, WITH STRONGEST GUSTS IN TEHAMA  
COUNTY UP TO 30 MPH, THOUGH DAYTIME HUMIDITIES WILL BE RELATIVELY  
HIGH.  
 
 
 
ECC007-221545-  
MENDOCINO NATIONAL FOREST, SOUTHERN SACRAMENTO VALLEY, AND DELTA-  
DISCUSSION FOR WILLOWS ECC DISPATCH  
244 PM PDT TUE JUL 21 2026  
 
...MOUNTAIN SHOWERS AND ISOLATED THUNDERSTORMS POSSIBLE TODAY  
THROUGH WEDNESDAY, WITH HIGHEST POTENTIAL IN THE SIERRA SOUTH OF  
I-80...  
 
HIGHER THAN NORMAL TEMPERATURES TODAY, FOLLOWED BY NEAR NORMAL  
CONDITIONS THE REMAINDER OF THIS WEEK. MONSOONAL AND REMNANT  
TROPICAL MOISTURE CONTINUE TO PUSH INTO THE REGION, BRINGING  
CHANCES FOR SHOWERS THROUGH THIS EVENING ALTHOUGH BETTER CHANCES  
WILL BE WESTWARD. WEDNESDAY WILL ALSO SEE BREEZY TO GUSTY WINDS  
IN THE NORTHERN SACRAMENTO VALLEY AS WELL AS ALONG THE FAR WESTERN  
EDGE OF THE SACRAMENTO VALLEY, WITH STRONGEST GUSTS IN TEHAMA  
COUNTY AND IN THE DELTA REGION (UP TO 30 MPH), THOUGH DAYTIME  
HUMIDITIES WILL BE RELATIVELY HIGH.  
 
 
 
ECC008-221545-  
RED BLUFF AND OROVILLE-  
DISCUSSION FOR RED BLUFF AND OROVILLE ECC DISPATCH  
244 PM PDT TUE JUL 21 2026  
 
...MOUNTAIN SHOWERS AND ISOLATED THUNDERSTORMS POSSIBLE TODAY  
THROUGH WEDNESDAY, WITH HIGHEST POTENTIAL IN THE SIERRA SOUTH OF  
I-80...  
 
HIGHER THAN NORMAL TEMPERATURES TODAY, FOLLOWED BY NEAR NORMAL  
CONDITIONS THE REMAINDER OF THIS WEEK. MONSOONAL AND REMNANT  
TROPICAL MOISTURE CONTINUE TO PUSH INTO THE REGION, BRINGING  
CHANCES FOR SHOWERS AND MOUNTAIN THUNDERSTORMS THROUGH WEDNESDAY.  
HIGHEST CHANCES FOR THUNDERSTORMS ARE THIS AFTERNOON ALONG THE  
SOUTHERN CASCADES AND SIERRA CREST, AROUND 20 TO 40%, WITH BEST  
POTENTIAL SOUTH OF I-80. THUNDERSTORM CHANCES IN THAT AREA  
DECREASE TO 10 TO 20% IN THE AFTERNOON ON WEDNESDAY, HIGHEST  
SOUTH OF US 50. WEDNESDAY WILL ALSO SEE BREEZY TO GUSTY WINDS IN  
THE NORTHERN SACRAMENTO VALLEY AS WELL AS ALONG THE FAR WESTERN  
EDGE OF THE SACRAMENTO VALLEY, WITH STRONGEST GUSTS IN TEHAMA  
COUNTY (UP TO 30 MPH), THOUGH DAYTIME HUMIDITIES WILL BE  
RELATIVELY HIGH.  
 
 
 
ECC011-221545-  
TAHOE NATIONAL FOREST-  
DISCUSSION FOR GRASS VALLEY ECC DISPATCH  
244 PM PDT TUE JUL 21 2026  
 
...MOUNTAIN SHOWERS AND ISOLATED THUNDERSTORMS POSSIBLE TODAY  
THROUGH WEDNESDAY, WITH HIGHEST POTENTIAL IN THE SIERRA SOUTH OF  
I-80...  
 
HIGHER THAN NORMAL TEMPERATURES TODAY, FOLLOWED BY NEAR NORMAL  
CONDITIONS THE REMAINDER OF THIS WEEK. MONSOONAL AND REMNANT  
TROPICAL MOISTURE CONTINUE TO PUSH INTO THE REGION, BRINGING  
CHANCES FOR SHOWERS AND MOUNTAIN THUNDERSTORMS THROUGH WEDNESDAY.  
HIGHEST CHANCES FOR THUNDERSTORMS ARE THIS AFTERNOON ALONG THE  
SOUTHERN CASCADES AND SIERRA CREST, AROUND 20 TO 40%, WITH BEST  
POTENTIAL SOUTH OF I-80. THUNDERSTORM CHANCES IN THAT AREA  
DECREASE TO 10 TO 20% IN THE AFTERNOON ON WEDNESDAY, HIGHEST  
SOUTH OF US 50. DIURNAL WINDS EXPECTED WITH BREEZY WEST WINDS IN  
THE AFTERNOONS GUSTING UP TO 20-30 MPH.  
 
 
 
ECC015-221545-  
STANISLAUS NATIONAL FOREST-  
DISCUSSION FOR SAN ANDREAS ECC DISPATCH  
244 PM PDT TUE JUL 21 2026  
 
...MOUNTAIN SHOWERS AND ISOLATED THUNDERSTORMS POSSIBLE TODAY  
THROUGH WEDNESDAY, WITH HIGHEST POTENTIAL IN THE SIERRA SOUTH OF  
I-80...  
 
HIGHER THAN NORMAL TEMPERATURES TODAY, FOLLOWED BY NEAR NORMAL  
CONDITIONS THE REMAINDER OF THIS WEEK. MONSOONAL AND REMNANT  
TROPICAL MOISTURE CONTINUE TO PUSH INTO THE REGION, BRINGING  
CHANCES FOR SHOWERS AND MOUNTAIN THUNDERSTORMS THROUGH WEDNESDAY.  
HIGHEST CHANCES FOR THUNDERSTORMS ARE THIS AFTERNOON ALONG THE  
SOUTHERN CASCADES AND SIERRA CREST, AROUND 20 TO 40%, WITH BEST  
POTENTIAL SOUTH OF I-80. THUNDERSTORM CHANCES IN THAT AREA  
DECREASE TO 10 TO 20% IN THE AFTERNOON ON WEDNESDAY, HIGHEST  
SOUTH OF US 50. DIURNAL WINDS EXPECTED WITH BREEZY WEST WINDS IN  
THE AFTERNOONS GUSTING UP TO 20-30 MPH.  
 
 
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