669
FXUS01 KWBC 070801
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT MON APR 07 2025
VALID 12Z MON APR 07 2025 - 12Z WED APR 09 2025
...MODERATE TO HEAVY RAIN AND STRONG TO SEVERE THUNDERSTORMS
EXPECTED FROM SOUTHEAST VIRGINIA TO NORTHERN FLORIDA MONDAY...
...WINTER WEATHER RETURNS FROM PARTS OF THE GREAT LAKES TO THE
INTERIOR NORTHEAST AND NORTHERN NEW ENGLAND THROUGH TUESDAY...
...STRONG COLD FRONT TO BRING MUCH COLDER TEMPERATURES TO THE
EASTERN U.S. THROUGH WEDNESDAY...
...A SERIES PACIFIC STORMS WILL BRING UNSETTLED WEATHER TO THE
PACIFIC NORTHWEST AND THE NORTHERN ROCKIES THROUGH MIDWEEK...
SEVERAL WAVES OF LOW PRESSURE ALONG A SLOW-MOVING FRONTAL BOUNDARY
DRAPED FROM THE SOUTHERN MID-ATLANTIC TO THE SOUTHEAST WILL BE THE
FOCUS FOR WIDESPREAD SHOWERS AND THUNDERSTORMS ACROSS THE REGION
ON MONDAY. PLENTIFUL MOISTURE AND INSTABILITY ALONG AND OUT AHEAD
OF THE FRONT WILL SUPPORT A MODERATE TO HEAVY RAIN THREAT FROM
PORTIONS OF SOUTHEAST VIRGINIA TO NORTHERN FLORIDA. UNLIKE THE
PAST SEVERAL DAYS, THE RAIN THAT FALLS ON MONDAY SHOULD NOT BE
OVERLY EXCESSIVE; HOWEVER, ISOLATED INSTANCES OF FLASH FLOODING
CANNOT BE RULED OUT. AS A RESULT, A MARGINAL RISK OF EXCESSIVE
RAINFALL (LEVEL 1/4) REMAINS IN PLACE FOR MUCH OF THE SOUTHERN
EASTERN SEABOARD. THE MODERATE TO HEAVY RAIN AND ISOLATED FLASH
FLOOD THREAT WILL COME TO AN END BY MONDAY NIGHT AS THE COLD FRONT
SWEEPS OFFSHORE.
THE SAME AREAS THAT ARE AT RISK OF MARGINALLY HEAVY RAINFALL ON
MONDAY ARE ALSO UNDER THE THREAT OF STRONG TO SEVERE
THUNDERSTORMS. THIS IS ESPECIALLY THE CASE FOR PARTS OF NORTHERN
FLORIDA, SOUTHEAST GEORGIA, AND SOUTHERN SOUTH CAROLINA WHERE THE
STORM PREDICTION CENTER HAS HIGHLIGHTED A SLIGHT RISK (LEVEL 2/5)
OF SEVERE WEATHER. IN THIS REGION, MOISTURE, INSTABILITY, AND WIND
SHEAR WILL COME TOGETHER TO PROMOTE THE DEVELOPMENT OF
THUNDERSTORMS THAT ARE CAPABLE OF PRODUCING DAMAGING WINDS AND
PERHAPS A TORNADO OR TWO.
FARTHER NORTH ON THE COOL SIDE OF THE FRONT, LIGHT TO MODERATE
RAIN SHOWERS WILL OVERSPREAD PARTS OF THE MID-ATLANTIC AND
SOUTHERN NEW ENGLAND ON MONDAY, RESULTING IN A DAMP START TO THE
WORK WEEK. EVEN FARTHER NORTH ACROSS PARTS OF THE INTERIOR
NORTHEAST AND NORTHERN NEW ENGLAND, THE AIR WILL BECOME COLD
ENOUGH TO SUPPORT A WINTRY MIX OF SNOW, SLEET, AND FREEZING RAIN,
PARTICULARLY IN THE HIGHER ELEVATIONS. WHILE ANY WINTRY
ACCUMULATIONS SHOULD MOSTLY BE LIGHT, IT COULD STILL BE ENOUGH TO
MAKE FOR SOME SLIPPERY TRAVEL ACROSS THE REGION. MEANWHILE, A
POTENT LOW PRESSURE SYSTEM AND STRONG COLD FRONT TRACKING FROM THE
GREAT LAKES TO NORTHERN NEW ENGLAND IN CONJUNCTION WITH A
DEEPENING WAVE OF LOW PRESSURE OFF THE CANADIAN MARITIMES WILL
LEAD TO MORE WIDESPREAD SNOW MONDAY INTO TUESDAY. MOST
ACCUMULATIONS WILL AGAIN REMAIN ON THE LIGHTER SIDE, BUT PARTS OF
UPSTATE NEW YORK, VERMONT, NEW HAMPSHIRE, AND ESPECIALLY MAINE
HAVE THE POTENTIAL TO SEE ACCUMULATIONS NEAR OR EXCEED 6 INCHES.
IN THE WAKE OF THE COLD FRONT, THE BIGGER STORY WILL BE THE MUCH
COLDER, MORE WINTER-LIKE TEMPERATURES THAT WILL OVERTAKE MUCH OF
THE EASTERN U.S. THROUGH THE MIDDLE PART OF THE WEEK. HIGH
TEMPERATURES THROUGH THIS PERIOD WILL BE SOME 10 TO 30 DEGREES
BELOW SEASONAL AVERAGES, WITH MANY PLACES ACROSS THE NORTHEAST AND
MID-ATLANTIC STRUGGLING TO GET OUT OF THE 20S, 30S, AND 40S. THE
COLD AIR MOVING OVER THE GREAT LAKES WILL ALSO RESULT IN
LAKE-EFFECT SNOWS DOWNWIND, LEADING TO THE POSSIBILITY OF LOCALLY
HIGHER SNOWFALL TOTALS TO BOOT.
OUT WEST, A SERIES OF PACIFIC STORMS WILL BRING EPISODES OF
UNSETTLED WEATHER TO THE PACIFIC NORTHWEST AND THE NORTHERN
ROCKIES THROUGH MIDWEEK. THESE FRONTAL SYSTEMS WILL BRING PACIFIC
MOISTURE INLAND, LEADING TO INTERMITTENT SHOWER ACTIVITY EACH DAY.
RAIN WILL FALL ACROSS COASTAL LOCATIONS AND THE LOWER ELEVATIONS
WHILE SNOW IS EXPECTED ACROSS THE HIGH COUNTRY. THE HEAVIEST
SNOWFALL WILL BE CONFINED TO THE HIGHER ELEVATIONS OF THE OLYMPIC
MOUNTAINS AND THE CASCADES WHERE SEVERAL INCHES UP TO A FEW FEET
IS FORECAST OVER THE NEXT FEW DAYS.
OTHERWISE, MAINLY DRY AND TRANQUIL WEATHER IS IN STORE FOR THE
REMAINDER OF THE COUNTRY THROUGH WEDNESDAY WITH HIGH PRESSURE
LARGELY IN CONTROL. WHILE TEMPERATURES ACROSS THE EAST WILL BE
WELL BELOW NORMAL, A WARMING TREND DEVELOPS ACROSS THE WEST WITH
WARMER THAN NORMAL TEMPERATURES GRADUALLY SPREADING INTO THE
CENTRAL U.S BY THE MIDDLE PART OF THE WEEK.
MILLER
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