790
FXUS01 KWBC 251940
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
339 PM EDT THU MAY 25 2023
VALID 00Z FRI MAY 26 2023 - 00Z SUN MAY 28 2023
...LOCALLY HEAVY RAIN AND THUNDERSTORMS POSSIBLE IN THE SOUTHEAST,
GREAT BASIN, NORTHERN ROCKIES, AND HIGH PLAINS OVER THE NEXT FEW
DAYS...
..HAZARDOUS BEACH CONDITIONS IN THE SOUTHEAST THIS WEEKEND
...ABOVE AVERAGE TEMPS IN THE NORTHWEST AND NORTH-CENTRAL U.S. AND
BELOW AVERAGE TEMPS IN THE MID-ATLANTIC AND SOUTHEAST THROUGH THE
WEEKEND...
A SLOW AND WEAK UPPER LEVEL PATTERN WILL RESULT IN A FAIRLY
STAGNANT WEATHER PATTERN ACROSS THE LOWER 48 STATES THROUGH THE
WEEKEND. A COUPLE UPPER LEVEL TROUGHS WILL IMPACT THE WEST AND
SOUTHEAST DURING THE PERIOD, WHICH WILL CHANGE UP THE PATTERN
SLIGHTLY.
THE FIRST UPPER TROUGH WILL MOVE VERY SLOWLY ACROSS THE WEST OVER
THE NEXT FEW DAYS. THIS FEATURE WILL BE FAIRLY WEAK, BUT WILL
PRODUCE SHOWER AND THUNDERSTORM CHANCES EACH DAY FOR MUCH OF THE
GREAT BASIN AND NORTHERN ROCKIES. LOCALLY HEAVY RAINFALL WILL BE
POSSIBLE WITH SLOW-MOVING STORMS, AND ISOLATED TO SCATTERED
INSTANCES OF FLASH FLOODING WILL BE POSSIBLE.
SHOWER AND THUNDERSTORM CHANCES WILL ALSO 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, AND THE
STORM PREDICTION CENTER HAS A MARGINAL RISK OF SEVERE
THUNDERSTORMS (LEVEL 1/5) OVER THE ENTIRE REGION FOR FRIDAY AND
SATURDAY WITH SMALLER EMBEDDED SLIGHT RISK AREAS (LEVEL 2/5) FOR
FRIDAY.
THE SECOND UPPER TROUGH WILL BRING A SURFACE LOW TOWARDS THE
SOUTHEAST COAST OVER THE WEEKEND. THIS FEATURE WILL APPROACH THE
COAST VERY SLOWLY, RESULTING IN A PROLONGED PERIOD OF LESS THAN
IDEAL HOLIDAY WEEKEND CONDITIONS. SHOWER AND THUNDERSTORM CHANCES
WILL INCREASE ALONG THE COAST AND OVER FLORIDA ON FRIDAY, THEN
SHIFT NORTH INTO THE CAROLINAS AND SOUTHERN MID-ATLANTIC SATURDAY
INTO SUNDAY. THE HEAVIEST RAIN IS EXPECTED IN THE CAROLINAS OVER
THE WEEKEND, AND SCATTERED INSTANCES OF FLASH FLOODING WILL BE
POSSIBLE. BEACH CONDITIONS ALONG THE SOUTHEASTERN COAST WILL BE
HAZARDOUS THROUGH THE WEEKEND WITH GUSTY WINDS AND FREQUENT RIP
CURRENTS POSSIBLE.
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. FORECAST CLOUD COVER AND
PRECIPITATION 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.
DOLAN
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