530  
FXUS66 KSTO 112052  
AFDSTO  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE SACRAMENTO CA  
152 PM PDT SUN APR 11 2021  
 
   
SYNOPSIS
 
 
DRY, WARM, AND BREEZY CONDITIONS INTO EARLY NEXT WEEK. CHANCES FOR  
MOUNTAIN SHOWERS OVER THE SIERRA ON TUESDAY AND WEDNESDAY.  
 

 
   
DISCUSSION
 
 
ANOTHER WARM AND DRY DAY IS SEEN ACROSS INTERIOR NORCAL TODAY WITH  
JUST A FEW HIGH CLOUDS NOTED ACROSS THE AREA VIA VISIBLE SATELLITE.  
UP IN THE NORTHERN SACRAMENTO VALLEY, THERE HAVE BEEN SOME  
BREEZIER WINDS WITH GUSTS UP TO AROUND 30 MPH LATE THIS MORNING,  
WITH THESE WINDS SLOWLY DECREASING AS THE DAY CONTINUES. ANOTHER  
WARM DAY IS SEEN WITH VALLEY HIGHS PEAKING INTO THE LOW 80S THIS  
AFTERNOON. THIS TREND CONTINUES TOMORROW AS NORTHWEST FLOW  
CONTINUES OVER THE AREA. HIGHS WILL BE A FEW DEGREES WARMER  
TOMORROW WITH ANOTHER ROUND OF BREEZY WINDS IN THE NORTHERN AND  
WESTERN PORTIONS OF THE SACRAMENTO VALLEY.  
 
A SHORTWAVE MOVES INTO THE PACNW ON TUESDAY, EVENTUALLY EVOLVING  
INTO A CUT OFF LOW BY THE AFTERNOON. THIS FEATURE WILL BRING GUSTY  
WINDS, SLIGHTLY COOLER TEMPERATURES, AND THE POSSIBILITY OF SOME  
MOUNTAIN SHOWERS. NORTH WINDS INCREASE IN THE MORNING ON TUESDAY,  
PEAKING DURING THE AFTERNOON HOURS IN THE SAME GENERAL LOCATION OF  
PREVIOUS DAYS. STILL THE POSSIBILITY FOR SOME MOUNTAIN/FOOTHILL  
SHOWERS DURING THE AFTERNOON AND EVENING ON TUESDAY AND WEDNESDAY,  
ALTHOUGH QPF AMOUNTS REMAIN LOW. THERE DOES LOOK TO BE SOME  
INSTABILITY (CAPE OF 100-200 J/KG) OVER THE MOUNTAINS AS WELL AND A  
FEW RUMBLES OF THUNDER LOOK POSSIBLE EACH DAY. WINDS DECREASE LATE  
TUESDAY NIGHT WITH TEMPERATURES ROUGHLY 5 DEGREES ABOVE NORMAL FOR  
WEDNESDAY AFTERNOON.  
 

 
   
EXTENDED DISCUSSION (THURSDAY THROUGH SUNDAY)
 
 
A CLOSED LOW WILL CONTINUE TO BE CENTERED OVER THE GREAT BASIN  
REGION ON THURSDAY, BEFORE WEAKENING FRIDAY PROGRESSING WITH UPPER  
COL MOVING OVER NORTHERN CALIFORNIA. AVAILABLE MOISTURE IS  
LIMITED TO HINDER PRECIPITATION DEVELOPMENT. LARGE DISAGREEMENT IN  
ENSEMBLE CLUSTERS CONTINUES FOR THE WEEKEND LEADING TO A MORE  
UNCERTAIN FORECAST. CONTINUED WITH THE NBM FORECAST FOR NULL POPS.  
TEMPERATURES REMAIN ABOVE AVERAGE FOR MID-APRIL.  
 

 
   
AVIATION
 
 
VFR CONDITIONS WILL CONTINUE TO PREVAIL ACROSS INTERIOR NORCAL  
OVER THE NEXT 24 HOURS. NORTH TO EAST WINDS WILL GUST UP TO 30 KT  
AT TIMES THIS AFTERNOON AND EVENING, WITH WINDS GENERALLY WEAKER  
DURING THE OVERNIGHT HOURS. GUSTY WINDS RETURN TOMORROW.  
 

 
   
STO WATCHES/WARNINGS/ADVISORIES
 
 
NONE.  

 
 

 
 
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