432
FXUS01 KWBC 220832
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT WED MAY 22 2024
VALID 12Z WED MAY 22 2024 - 12Z FRI MAY 24 2024
...DEEP STORM BEGINS TO MOVE AWAY FROM THE UPPER MIDWEST/GREAT
LAKES TODAY AS THE NEXT HEAVY RAIN AND SEVERE WEATHER THREATS
EMERGE ACROSS THE SOUTHERN PLAINS TOWARD THE LOWER TO
MID-MISSISSIPPI VALLEY TONIGHT...
...HEAVY WET SNOW EXPECTED TO OVERSPREAD THE HIGHER ELEVATIONS OF
THE NORTHERN ROCKIES TONIGHT INTO THURSDAY...
...ANOTHER RAPIDLY DEVELOPING LOW PRESSURE SYSTEM WILL BRING
SEVERE WEATHER AND HEAVY RAIN THREATS INTO THE THURSDAY NIGHT INTO
FRIDAY MORNING...
AN ACTIVE WEATHER PATTERN CONTINUES FROM THE WESTERN U.S. TO THE
GREAT PLAINS WHERE UNSETTLED AND CHANGEABLE WEATHER CAN BE
EXPECTED FOR AT LEAST THE NEXT COUPLE OF DAYS. RESIDENTS ACROSS
THE UPPER MIDWEST INTO THE UPPER GREAT LAKES WILL WAKE UP THIS
MORNING WITH A RAPIDLY INTENSIFYING LOW-PRESSURE SYSTEM PASSING
THROUGH. MUCH OF THE HEAVY RAIN AND EMBEDDED THUNDERSTORMS
ASSOCIATED WITH THE SYSTEM ARE ALREADY MOVING INTO SOUTHERN CANADA
AS THE STORM CENTER CONTINUES TO TAKE A NORTH-NORTHEASTERLY TRACK
ACROSS THE WESTERN END OF LAKE SUPERIOR AND HEADING QUICKLY TOWARD
SOUTHERN CANADA. BLUSTERY WINDS BEHIND THE DEPARTING STORM WILL
TAKE EXTRA TIME TO SUBSIDE TODAY ACROSS THE UPPER MIDWEST AND THE
GREAT LAKES. AS THE HEAVY RAIN AND THUNDERSTORMS ASSOCIATED WITH
THE DEEP STORM EXIT THE UPPER MIDWEST, THE SOUTHERN PLAINS WILL
NEED TO WATCH FOR AN EMERGING THREAT OF HEAVY RAIN AND SEVERE
THUNDERSTORMS WHERE THE TRAILING FRONT FROM THE DEEP STORM BECOMES
NEARLY STATIONARY. THE MOST ACTIVE WEATHER CAN BE EXPECTED
TONIGHT AS WELL AS THURSDAY NIGHT FROM THE SOUTHERN PLAINS TOWARD
THE LOWER MISSISSIPPI VALLEY, WITH A LULL IN THE ACTIVITIES
THURSDAY MORNING.
MEANWHILE, THE NEXT ENERGETIC UPPER LOW, WHICH HAD A HISTORY OF
DIVING SOUTHEAST FROM ALASKA, IS GETTING READY TO REACH THE
PACIFIC NORTHWEST. THE SYSTEM WILL BRING A ROUND OF WIDESPREAD
PRECIPITATION THROUGH THE NORTHWEST, WITH HEAVY WET SNOW FALLING
ACROSS THE HIGHER ELEVATIONS OF IDAHO, WESTERN MONTANA, AND INTO
WYOMING FOR TONIGHT AND INTO THURSDAY. THE SYSTEM WILL ALSO USHER
A COLD AIR MASS THROUGH THE NORTHWEST BY THURSDAY, REACHING INTO
THE NORTHERN PLAINS BY FRIDAY MORNING. WINDY CONDITIONS ARE ALSO
EXPECTED TO OVERSPREAD THE ENTIRE AREA, ESPECIALLY IMMEDIATELY
BEHIND A SHARP COLD FRONT.
ELSEWHERE, RELATIVELY QUIET WEATHER IS EXPECTED ACROSS THE
SOUTHWEST. MEANWHILE, VERY WARM TO HOT WEATHER IS EXPECTED ACROSS
MUCH OF THE EASTERN U.S. TODAY BEFORE SHOWERS AND THUNDERSTORMS
QUICKLY MOVE INTO THE INTERIOR SECTIONS LATER TODAY. THE
MID-ATLANTIC STATES WILL SEE THESE SHOWERS AND EMBEDDED
THUNDERSTORMS MOVE IN TONIGHT AND LINGER INTO THURSDAY AS THE
FRONT BECOMES NEARLY STATIONARY ACROSS THE REGION. ADDITIONAL
MOISTURE FROM THE SOUTH IS FORECAST TO RIDE ALONG THE FRONT,
BRINGING ROUNDS OF SHOWERS AND THUNDERSTORMS FROM THE MID-SOUTH TO
THE MID-ATLANTIC INTO FRIDAY MORNING.
ACROSS SOUTHERN TEXAS, THE HEAT IS FORECAST TO GRADUALLY INTENSIFY
THROUGH THE NEXT FEW DAYS, WITH HEAT INDICES POSSIBLY TOPPING 110
DEGREES BY THURSDAY AFTERNOON. RESIDENTS ACROSS SOUTHERN FLORIDA
WILL ALSO FEEL THE HEAT GETTING MORE OPPRESSIVE AS THE WEEK
PROGRESSES DUE TO GRADUALLY INCREASING HUMIDITY UNDER THE
INFLUENCE OF A HIGH PRESSURE RIDGE WITH FAIR WEATHER CONDITIONS.
KONG
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