872
FXUS01 KWBC 230807
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT SUN MAR 23 2025
VALID 12Z SUN MAR 23 2025 - 12Z TUE MAR 25 2025
...SNOW DEVELOPS ACROSS THE UPPER MIDWEST TO THE UPPER GREAT LAKES
TODAY AS SEVERE WEATHER AND HEAVY RAIN THREAT EMERGE ACROSS THE
MID-SOUTH...
...MORE WET WEATHER EXPECTED FOR THE PACIFIC NORTHWEST THROUGH
MONDAY BEFORE A DRYING TREND SETS IN...
...FIRE WEATHER THREAT TODAY ACROSS LARGE PORTIONS OF THE CENTRAL
TO SOUTHERN PLAINS...
A FAIRLY DEEP LOW PRESSURE SYSTEM WILL BE THE MAIN WEATHER MAKER
FOR THE EASTERN TWO-THIRDS OF THE COUNTRY FOR THE NEXT COUPLE OF
DAYS AS WE HEAD INTO THE NEW WEEK. THIS SYSTEM IS CURRENTLY
CONSOLIDATING OVER THE NORTHERN AND CENTRAL PLAINS WITH TWO
SEPARATE CENTERS OF CIRCULATION AS AN UPPER-LEVEL TROUGH MOVES OFF
THE ROCKIES INTO THE HIGH PLAINS. ENOUGH COLD AIR WILL BE
AVAILABLE TO SUPPORT MODERATE TO LOCALLY HEAVY SNOW MAINLY NORTH
OF THE LOW CENTER ACROSS THE UPPER MIDWEST TODAY. THE SNOW WILL
BECOME MORE WIDESPREAD TONIGHT ACROSS THE UPPER GREAT LAKES REGION
AS THE NORTHERN LOW BECOMES THE MAIN SYSTEM. UPWARDS OF 6 TO 8
INCHES OF NEW SNOW WITH LOCALLY HIGH AMOUNTS CAN BE EXPECTED
ACROSS THE UPPER MIDWEST TO UPPER GREAT LAKES.
FARTHER SOUTH, A SECOND LOW PRESSURE CENTER ALONG A SOUTHERN FRONT
WILL HELP ORGANIZE AND TRIGGER SHOWERS AND THUNDERSTORMS THIS
MORNING FROM MISSOURI EASTWARD INTO THE OHIO VALLEY. A BETTER
CHANCE OF STRONG TO SEVERE THUNDERSTORMS WILL ARRIVE BY LATE THIS
AFTERNOON INTO TONIGHT ACROSS THE DEEP SOUTH AS THE COLD FRONT
ASSOCIATED WITH THE NORTHERN LOW CATCHES UP AND MERGES WITH THE
SOUTHERN FRONT. THE PRIMARY THREATS WILL BE DAMAGING THUNDERSTORM
WIND GUSTS, LARGE HAIL, ALONG WITH POSSIBLE TORNADOES. THE MERGED
SYSTEM WILL DELIVER A ROUND OF SNOW FROM UPSTATE NEW YORK TO
INTERIOR NEW ENGLAND ON MONDAY WHILE SCATTERED SHOWERS AND
THUNDERSTORMS MOVE THROUGH A LARGE PORTION OF THE EASTERN U.S.
BEFORE COLDER AND DRIER AIR WILL BE USHERED INTO THE ENTIRE REGION
BEHIND A COLD FRONT.
MEANWHILE, MOISTURE FROM A RELATIVELY ACTIVE PACIFIC WEATHER
PATTERN WILL CONTINUE TO SEND MODERATE TO HEAVY RAIN INTO THE
STATE OF WASHINGTON TODAY AND INTO MONDAY. BY MONDAY NIGHT INTO
TUESDAY MORNING, THE OFFSHORE FRONTS ARE FORECAST TO WEAKEN AND
LIFT MORE NORTHWARD TOWARD WESTERN CANADA, LEADING TO A DRYING
TREND FOR THE PACIFIC NORTHWEST. MUCH OF THE REST OF THE WESTERN
U.S. WILL BE DRY WITH A WARMING TREND CONTINUING THROUGH THE NEXT
COUPLE OF DAYS UNDER THE INFLUENCE OF AN UPPER-LEVEL RIDGE. THE
WARM AIR WILL SPREAD INTO MUCH OF THE PLAINS ON MONDAY WITH LITTLE
PRECIPITATION DESPITE THE PRESENCE OF A PAIR OF FRONTS. MUCH OF
THE GREAT LAKES AND NORTHEAST WILL REMAIN COLD DUE TO THE PASSAGE
OF THE AFOREMENTIONED LOW PRESSURE SYSTEM. SOME WET SNOW THIS
MORNING IN MAINE WILL MOVE OFF TO THE EAST BEHIND A FRONT AS SOME
LAKE-EFFECT SNOW ACROSS UPSTATE NEW YORK SHOULD GRADUALLY TAPER
OFF TODAY WITH THE ARRIVAL OF A HIGH PRESSURE SYSTEM.
KONG
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