342
FXUS01 KWBC 260805
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT FRI MAY 26 2023
VALID 12Z FRI MAY 26 2023 - 12Z SUN MAY 28 2023
...A LOW PRESSURE SYSTEM IS FORECAST TO BRING AREAS OF HEAVY RAIN,
GUSTY WINDS AND HAZARDOUS BEACH CONDITIONS FOR THE SOUTHEAST OVER
THE MEMORIAL DAY WEEKEND...
...SHOWERS AND THUNDERSTORMS EXPECTED TO LINGER ACROSS THE GREAT
BASIN, NORTHERN AND CENTRAL ROCKIES, AND THE HIGH PLAINS FOR THE
NEXT FEW DAYS...
...WARMER THAN NORMAL ACROSS MUCH OF THE NORTHWEST AND
NORTH-CENTRAL U.S. BUT MUCH COOLER THAN NORMAL ACROSS THE
MID-ATLANTIC AND SOUTHEAST...
AN ABNORMALLY SLOW WEATHER PATTERN IS FORECAST TO PREVAIL ACROSS
THE MAINLAND U.S. AS WE HEAD TOWARD AND INTO THE MEMORIAL DAY
WEEKEND. FIRST OF ALL, FINE WEATHER WILL PREVAIL ACROSS THE
ENTIRE NORTHEASTERN QUADRANT OF THE COUNTRY INTO THE NORTHERN
PLAINS UNDER THE INFLUENCE OF A LARGE AND COOL HIGH PRESSURE
SYSTEM. THE COOL TEMPERATURES WILL CONTINUE ACROSS NEW ENGLAND
FOR ONE MORE MORNING TODAY BUT THE STRONG MAY SUN WILL WARM
TEMPERATURES TO ABOVE NORMAL LEVELS BY SATURDAY AFTERNOON AS THEY
REACH INTO THE MID TO UPPER 70S.
MEANWHILE, A LOW PRESSURE SYSTEM THAT HAS BEEN DEVELOPING OVER
FLORIDA WILL BRING DETERIORATING WEATHER INTO THE SOUTHEAST FOR
THE MEMORIAL DAY WEEKEND. THIS SYSTEM WILL HAVE A CHANCE TO
GATHER SOME STRENGTH OVER THE WARM WATERS OFF THE SOUTHEASTERN
U.S. ON FRIDAY BEFORE HEADING NORTH TOWARD THE CAROLINAS ON
SATURDAY. HEAVY RAIN AND THUNDERSTORMS AHEAD OF THE STORM CENTER
ARE FORECAST TO MOVE ONSHORE INTO THE CAROLINAS ON SATURDAY BEFORE
THE STORM CENTER ITSELF MAKES LANDFALL EARLY ON SUNDAY.
SCATTERED INSTANCES OF FLASH FLOODING WILL BE POSSIBLE WITH THE
HEAVIEST RAINS. MEANWHILE, BEACH CONDITIONS ALONG THE
SOUTHEASTERN U.S. COAST WILL BE HAZARDOUS THROUGH THE WEEKEND WITH
GUSTY WINDS AND FREQUENT RIP CURRENTS LIKELY. BY EARLY ON SUNDAY,
SOME OF THE HEAVY RAIN IS EXPECTED TO SPREAD FARTHER INLAND AND
MAY REACH SOUTHERN VIRGINIA.
ON THE WEST SIDE OF THIS ABNORMALLY SLOW WEATHER PATTERN WILL BE
AN UPPER LEVEL TROUGH FORECAST TO LINGER ACROSS THE WESTERN U.S.
SHOWERS AND THUNDERSTORMS WILL PREVAIL EACH DAY OVER PARTS OF THE
HIGH PLAINS DUE TO PERSISTENT TROUGHING AND ENHANCED CONVERGENCE
IN THIS REGION. LOCALLY HEAVY RAINFALL MAY LEAD TO ISOLATED TO
SCATTERED INSTANCES OF FLASH FLOODING. ISOLATED TO SCATTERED
SEVERE THUNDERSTORMS WILL ALSO BE POSSIBLE. THE STORM PREDICTION
CENTER HAS A COUPLE OF SLIGHT RISK AREAS TODAY ACROSS MUCH OF THE
HIGH PLAINS WITH AN EMBEDDED ENHANCED RISK OVER THE SOUTHERN HIGH
PLAINS.
TEMPERATURES WILL TREND ABOVE AVERAGE FOR THE MAJORITY OF THE
NORTHWEST AND NORTH-CENTRAL U.S. WITH HIGHS IN THE 70S AND 80S.
ABOVE AVERAGE TEMPERATURES WILL EXPAND INTO THE NORTHEAST SATURDAY
AND SUNDAY AS A WARM FRONT LIFTS NORTH OF THE REGION, AND HIGHS
WILL REACH INTO THE 80S BY SUNDAY. IN CONTRAST, CONSIDERABLE
CLOUD COVER AND PRECIPITATION ASSOCIATED WITH THE COASTAL STORM
WILL RESULT IN BELOW NORMAL TEMPERATURES IN THE SOUTHEAST AND
SOUTHERN MID-ATLANTIC REGION THROUGH THE WEEKEND WITH HIGHS ONLY
REACHING THE 60S AND LOWER 70S.
KONG/DOLAN
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