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
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