110
FXUS01 KWBC 210802
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT SAT SEP 21 2024
VALID 12Z SAT SEP 21 2024 - 12Z MON SEP 23 2024
...THREAT OF HEAVY RAINFALL AND SEVERE WEATHER WILL BE FOCUSED
ACROSS THE CENTRAL U.S. AND INTO MIDWEST FOR THE NEXT COUPLE OF
DAYS...
...A SLOW-MOVING COASTAL STORM WILL BRING ANOTHER RAINY DAY TODAY
ACROSS SOUTHEASTERN NEW ENGLAND AND COASTAL FLOODING DURING HIGH
TIDES FOR THE NORTHERN MID-ATLANTIC COAST...
...MUCH BELOW NORMAL TEMPERATURES SURGE INTO THE CENTRAL HIGH
PLAINS ON SUNDAY AS ABOVE AVERAGE TEMPERATURES SHIFT EAST FROM THE
PLAINS INTO THE OHIO AND MISSISSIPPI VALLEY...
MOST OF THE ACTIVE WEATHER FOR THE NEXT COUPLE OF DAYS WILL BE
FOCUSED ACROSS THE CENTRAL U.S. AND WILL SLOWLY SHIFT EAST INTO
THE MIDWEST BY MONDAY MORNING. THIS IS IN RESPONSE TO A VIGOROUS
UPPER-LEVEL LOW PRESSURE SYSTEM THAT WILL SWING ACROSS THE
SOUTHWEST TODAY AND THEN INTERACT WITH A SURGE OF COOL AIR DOWN
FROM WESTERN CANADA. THUNDERSTORMS ARE EXPECTED TO DEVELOP
QUICKLY LATER TODAY ACROSS THE SOUTHERN HIGH PLAINS WHERE SEVERE
WEATHER WILL BE POSSIBLE AS A COLD FRONT SURGES SOUTH AND CLASHES
WITH WARM AND MOIST AIR LIFTED NORTHWARD BY THE UPPER LOW. BY
SATURDAY NIGHT INTO SUNDAY, THE MAIN ACTIVITIES WILL THEN
GRADUALLY SHIFT EAST ACROSS THE CENTRAL PLAINS TOWARD THE
MID-MISSISSIPPI VALLEY AS LOW PRESSURE WAVES FORM ALONG THE FRONT.
SUNDAY INTO MONDAY MORNING WILL SEE THE POTENTIAL OF HEAVY RAIN
SHIFTING FARTHER EAST INTO THE MIDWEST AND TOWARD THE OHIO VALLEY.
MEANWHILE, COLDER AIR BEHIND THE SYSTEM WILL CHANGE THE RAIN INTO
WET SNOW ACROSS THE HIGHER ELEVATIONS OF COLORADO ROCKIES SATURDAY
NIGHT INTO SUNDAY MORNING. SHOWERS AND EMBEDDED THUNDERSTORMS CAN
ALSO BE EXPECTED FARTHER NORTH NEAR/BEHIND THE COLD FRONT ACROSS
THE NORTHERN PLAINS TODAY, INTO THE UPPER MIDWEST TONIGHT,
FOLLOWED BY THE UPPER MIDWEST AND THE GREAT LAKES SUNDAY INTO
MONDAY MORNING.
TEMPERATURES WILL FALL PRECIPITOUSLY ON THE BACKSIDE OF THE COLD
FRONT OVER PORTIONS OF THE SOUTHERN HIGH PLAINS AND CENTRAL PLAINS
BEGINNING SATURDAY. HIGH TEMPERATURES IN THE 50S WILL REPRESENT
15 TO 30 DEGREE DEPARTURES FROM AVERAGE FOR THE AFOREMENTIONED
AREAS. ABOVE AVERAGE TEMPERATURES WILL BE IN PLACE ACROSS THE
MIDWEST AND SOUTHEAST THIS WEEKEND AS UPPER-LEVEL RIDGING
EXTENDING FROM MEXICO INTO TEXAS REMAINS IN PLACE. ELSEWHERE, A
SLOW-MOVING COASTAL STORM WILL BRING ANOTHER RAINY DAY ACROSS
SOUTHEASTERN NEW ENGLAND WITH COASTAL FLOODING DURING HIGH TIDES
FOR THE NORTHERN MID-ATLANTIC COAST FOR TODAY BEFORE THE STORM
SLOWLY MOVES OUT INTO THE ATLANTIC ON SUNDAY.
KONG/KEBEDE
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