191  
FXUS66 KHNX 312008  
AFDHNX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE HANFORD CA  
108 PM PDT SUN MAY 31 2020  
 
   
SYNOPSIS
 
DRY WEATHER CAN BE EXPECTED OVER THE CENTRAL  
CALIFORNIA INTERIOR THROUGH MONDAY WITH SEASONABLE AFTERNOON  
TEMPERATURES. A RETURN OF TRIPLE DIGIT HEAT IS LIKELY OVER  
MUCH OF THE SAN JOAQUIN VALLEY AND THE KERN COUNTY DESERT BY  
MIDWEEK ALONG WITH A CHANCE OF AFTERNOON THUNDERSTORMS OVER  
THE SIERRA. COOLING RETURNS LATER IN THE WEEK.  
 

 
   
DISCUSSION
 
 
LOOKS LIKE A GOOD NEWS/BAD NEWS SANDWICH FORECAST IS IN STORE FOR  
THE AREA. LUCKILY THE GOOD NEWS WILL BE THE BREAD SO WE GET TWO  
SERVINGS OF THAT WITH A LITTLE BAD NEWS MEAT IN THE MIDDLE. THE  
FIRST BIT OF GOOD NEWS IS WITH TROUGHING IN PLACE OVER THE WESTERN  
THIRD OF THE CONUS WE HAVE NEAR TO SLIGHTLY BELOW NORMAL HIGH  
TEMPERATURES FOR THE NEXT COUPLE OF DAYS ALONG WITH A FEW MID TO  
HIGH LEVEL CLOUDS MAKING FOR BEAUTIFUL WEATHER IN THESE PARTS.  
 
NOW FOR THE BAD NEWS MIDDLE OF THE SANDWICH, THE STRONG RIDGING  
THAT BROUGHT US THE HOT TEMPERATURES LAST WEEK AND CURRENTLY  
SITTING OVER THE SOUTH CENTRAL U.S. WILL UNFORTUNATELY RETROGRADE  
SLIGHTLY BY LATE TUESDAY AS THE WESTERN TROUGHING BEGINS TO  
DEVELOP INTO A CUTOFF LOW FEATURE OVER THE EASTERN PACIFIC JUST  
SOUTHWEST OF CALIFORNIA. THE WESTERN PERIPHERY OF THE RIDGE WILL  
BUILD WESTWARD INTO THE REGION AND ALLOW FOR A INCREASE IN  
TEMPERATURES BUT ALSO ALLOW SOME MOISTURE FROM THE GULF OF  
CALIFORNIA TO STREAM NORTHWARD AND INCREASE CHANCES FOR A FEW  
SHOWERS AND THUNDERSTORMS OVER THE HIGHER ELEVATIONS OF THE SIERRA  
AND EVEN THE KERN MOUNTAINS. AT THIS TIME IT LOOKS AS IF THE FLOW  
WILL BE MOSTLY SOUTHERLY SO THE STORMS SHOULD STAY OVER THE  
SIERRA NEVADA, BUT FOR ANY STORMS THAT DEVELOP OVER THE KERN  
COUNTY MOUNTAINS IT IS POSSIBLE A STRAY THUNDERSTORM OR SHOWER  
COULD MOVE INTO THE SOUTHERN SAN JOAQUIN VALLEY.  
 
NOW BACK TO THE SECOND HELPING OF GOOD NEWS. THANKFULLY THIS RIDGE  
ENCROACHMENT WILL BE TEMPORARY AND LOOKS LIKE BY LATE THURSDAY THE  
CUTOFF FEATURE PREVIOUSLY MENTIONED WILL ONCE AGAIN MOVE EASTWARD,  
ALONG WITH A LARGE TROUGH OVER THE EASTERN PACIFIC ORIGINATING  
FROM THE GULF OF ALASKA, PUSHING THE RIDGING BACK INTO THE SOUTH  
CENTRAL U.S.. THIS WILL ALLOW FOR DECENT SYNOPTIC COOLING AND AN  
INCREASE IN CLOUDS WHICH WILL HELP TO BRING HIGH TEMPERATURES BACK  
TO NEAR NORMAL LEVELS ON FRIDAY AND BELOW NORMAL FOR SATURDAY INTO  
THE BEGINNING OF NEXT WEEK. A ZONAL PATTERN THEN LOOKS TO DEVELOP  
WITH AN ONSHORE FLOW AND SHOULD KEEP THE LONGER TERM COOLER ACROSS  
THE REGION. SO NOT A BAD FORECAST TO SWALLOW. MUCH BETTER THAN TWO  
PARTS OF BAD NEWS I SUPPOSE. BE SAFE OUT THERE.  
 

 
   
AVIATION
 
 
VFR CONDITIONS WILL PREVAIL THROUGHOUT THE CENTRAL CALIFORNIA  
INTERIOR DURING THE NEXT 24 HOURS.  
 

 
   
AIR QUALITY ISSUES
 
 
NONE.  
 

 
   
CERTAINTY
 
 
THE LEVEL OF CERTAINTY FOR DAYS 1 AND 2 IS HIGH.  
THE LEVEL OF CERTAINTY FOR DAYS 3 THROUGH 7 IS MEDIUM.  
 
CERTAINTY LEVELS INCLUDE LOW...MEDIUM...AND HIGH. PLEASE VISIT  
WWW.WEATHER.GOV/HNX/CERTAINTY.HTML FOR ADDITIONAL INFORMATION  
AN/OR TO PROVIDE FEEDBACK.  
 

 
   
HNX WATCHES/WARNINGS/ADVISORIES
 
 
NONE.  

 
 

 
 
PUBLIC...ANDERSEN  
AVIATION....CMC  
 
WEATHER.GOV/HANFORD  
 
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