865  
FXUS01 KWBC 210605  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
204 AM EDT SAT MAY 21 2022  
 
VALID 12Z SAT MAY 21 2022 - 12Z MON MAY 23 2022  
   
..RECORD HEAT IN THE EAST; RECORD COLD IN THE ROCKIES
 
 
...STRONG TO SEVERE STORMS POSSIBLE FROM THE NORTHEAST TO THE  
SOUTHERN PLAINS THIS WEEKEND...  
 
...HEAVY SNOW ENDING LATE THIS MORNING OVER PORTIONS OF THE  
CENTRAL ROCKIES...  
 
WHILE IT MAY LOOK AND FEEL LIKE A RETURN TO WINTER OVER PORTIONS  
OF COLORADO, MID-SUMMER HEAT WILL GRASP MUCH OF THE EAST TODAY AND  
LINGER INTO TOMORROW OVER NEW ENGLAND. A DIP IN THE JET STREAM  
WILL MAINTAIN MUCH COOLER THAN NORMAL TEMPERATURES FOR THE ROCKIES  
INTO THE PLAINS, WITH A STRONG COLD FRONT SEPARATING IT FROM THE  
HOT WEATHER IN THE EAST. ALONG AND AHEAD OF THIS BOUNDARY, SHOWERS  
AND THUNDERSTORMS WILL AGAIN BE COMMON TODAY WITH HEAVY RAIN/FLASH  
FLOODING POSSIBLE OVER THE MIDDLE MISSISSIPPI VALLEY. IN ADDITION,  
SEVERE WEATHER IS POSSIBLE ANYWHERE FROM TEXAS NORTHEASTWARD TO  
NORTHERN NEW ENGLAND TODAY. STORMS MAY BE CAPABLE OF PRODUCING  
DAMAGING WINDS AND LARGE HAIL. TEMPERATURES TO THE EAST OF THE  
COLD FRONT WILL BE WELL ABOVE NORMAL WITH MANY AREAS NEAR RECORD  
HIGHS FOR THE DATE. THIS WILL ALSO BE THE WARMEST DAY OF THE YEAR  
SO FAR FOR SOME. 90S WILL BE COMMON EVEN INTO THE NORTHEAST WHICH  
IS ABOUT 20-25 DEGREES ABOVE NORMAL. HEAT ADVISORIES ARE IN EFFECT  
FOR TODAY. BEHIND THE FRONT, SNOW WILL GRADUALLY DIMINISH THROUGH  
THE DAY OVER COLORADO BUT TEMPERATURES WILL REMAIN VERY COLD FOR  
LATE MAY -- NEARLY 40 DEGREES BELOW NORMAL.  
 
ON SUNDAY, THE COLD FRONT WILL PROGRESS EASTWARD INTO THE  
NORTHEAST BUT SLOW AS IT MOVES INTO THE LOWER MISSISSIPPI VALLEY.  
THIS WILL BE THE FOCUS FOR HEAVY RAIN/FLASH FLOODING THOUGH MANY  
THUNDERSTORMS CAN PRODUCE HEAVY RAIN. IN THE NORTHEAST, SUNDAY  
WILL BRING ANOTHER CHANCE OF SEVERE WEATHER AS THE FRONT SLOWLY  
MOVES EASTWARD. TEMPERATURES WILL RISE INTO THE 80S AND 90S ONCE  
AGAIN AFTER A STEAMY START WITH LOWS ONLY IN THE UPPER 60S TO MID  
70S. FARTHER WEST, SUNDAY WILL BRING MUCH COOLER WEATHER TO THE  
MIDWEST, MIDDLE MISSISSIPPI VALLEY, AND MUCH OF TEXAS BEHIND THE  
COLD FRONT. MANY AREAS WILL SEE HIGHS ABOUT 20 DEGREES COOLER ON  
SUNDAY COMPARED TO SATURDAY. SUNDAY NIGHT INTO MONDAY, THE FRONT  
WILL PUSH OFF THE NORTHEAST AND MID-ATLANTIC COAST BUT STALL  
ACROSS THE SOUTHEAST, MAINTAINING A CHANCE OF SHOWERS AND SOME  
STORMS.  
 
WHILE FIRE WEATHER CONCERNS ARE EXPECTED TO BE COMPARATIVELY LESS  
THAN THOSE OF PREVIOUS DAYS, REGIONAL CONCERNS ARE EXPECTED TO  
CONTINUE FOR PORTIONS OF NEW MEXICO, WHERE DRY AND WINDY  
CONDITIONS MAY CONTINUE TO PROMOTE CONDITIONS FAVORABLE FOR RAPID  
FIRE GROWTH.  
 
FRACASSO  
 
GRAPHICS ARE AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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