670
FXUS01 KWBC 291927
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
227 PM EST FRI NOV 29 2024
VALID 00Z SAT NOV 30 2024 - 00Z MON DEC 02 2024
...ARCTIC BLAST BRINGS COLDEST AIR SINCE LAST WINTER TO MUCH OF
THE EASTERN HALF OF THE COUNTRY...
...HEAVY LAKE EFFECT SNOW CONTINUES INTO THE WEEKEND ACROSS THE
GREAT LAKES...
AN ARCTIC AIRMASS HAS MOVED SOUTHWARD ACROSS THE NORTHERN
PLAINS/MIDWEST INTO THE SOUTH/EAST COAST AND IS EXPECTED TO REMAIN
IN PLACE NOT ONLY THROUGH THE WEEKEND BUT INTO NEXT WEEK, BRINGING
THE COLDEST AIR SINCE LAST WINTER. HIGHS THIS WEEKEND WILL RANGE
FROM THE SINGLE DIGITS AND TEENS IN THE NORTHERN PLAINS, THE
20S/30S IN THE MIDWEST, THE 30S AND 40S FOR THE NORTHEAST, AND THE
40S AND 50S FOR THE SOUTH. MORNING LOWS WILL DROP INTO THE 20S FOR
THE NORTHEAST, TEENS IN THE MIDWEST, AND SINGLE DIGITS/BELOW ZERO
FOR THE NORTHERN PLAINS. THE WORST CONDITIONS ARE EXPECTED
SATURDAY MORNING IN THE NORTHERN PLAINS AND UPPER MIDWEST, WHERE
MINIMUM WIND CHILLS WILL FALL WELL BELOW ZERO. WIND CHILLS ACROSS
MUCH OF THE DAKOTAS AND MINNESOTA WILL BE BELOW NEGATIVE 15 WITH
PORTIONS OF NORTH DAKOTA AS COLD AS NEGATIVE 30-40. THIS WILL POSE
AN INCREASED RISK OF HYPOTHERMIA AND FROSTBITE ON EXPOSED SKIN.
WHILE NOT QUITE AS DANGEROUS, WIND CHILLS WILL ALSO STILL BE
BITTERLY COLD ACROSS THE MIDWEST AND THE NORTHEAST SATURDAY WITH
BREEZY WINDS EXPECTED. ANOTHER CONCERN WILL BE FURTHER SOUTH WHERE
SUBFREEZING MORNING LOWS ARE FORECAST THIS WEEKEND ALONG THE
SOUTHEASTERN ATLANTIC COAST AND WEST ALONG INLAND AREAS OF THE
GULF COAST, WITH THE POSSIBILITY OF A FROST ALONG THE GULF COAST
AND INTO NORTH FLORIDA. WIDESPREAD FREEZE WARNINGS ARE IN EFFECT
AS THESE TEMPERATURES CAN KILL CROPS AND OTHER SENSITIVE
VEGETATION AS WELL AS DAMAGE UNPROTECTED OUTDOOR PLUMBING.
IN ADDITION TO THE COLD, HEAVY, PROLONGED LAKE EFFECT SNOW BANDS
WILL CONTINUE INTO THE WEEKEND FOR FAVORABLE DOWNWIND LOCATIONS
ACROSS THE GREAT LAKES, INCLUDING THE UP OF MICHIGAN, WESTERN
MICHIGAN, NORTHEASTERN OHIO, NORTHWESTERN PENNSYLVANIAN, AND
PORTIONS OF UPSTATE NEW YORK. ACCUMULATIONS WILL MEASURE IN FEET
IN THE HARDEST HIT AREAS, WITH BREEZY CONDITIONS LEADING TO
DRIFTING SNOW AS WELL. TRAVEL WILL BE DIFFICULT TO IMPOSSIBLE,
ESPECIALLY FOR MAJOR INTERSTATES I-90 BETWEEN CLEVELAND AND
BUFFALO AND I-81 NORTH OF SYRACUSE. A QUICK MOVING UPPER-LEVEL
SHORTWAVE WILL ALSO HELP TO TRIGGER SOME SNOW SHOWERS ALONG AND TO
THE NORTH OF A FRONTAL BOUNDARY STRETCHING ACROSS THE MIDDLE
MISSISSIPPI VALLEY SATURDAY, THE OHIO VALLEY SATURDAY NIGHT, AND
INTO THE CENTRAL APPALACHIANS BY SUNDAY MORNING. ANY ACCUMULATIONS
SHOULD BE LIGHT BUT THE QUICK MOVING SHOWERS MAY CAUSE SOME TRAVEL
TROUBLES FOR THOSE ON THE ROAD THIS WEEKEND.
ELSEWHERE, SOME SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THIS
WEEKEND FOR SOUTH FLORIDA AND SOUTHERN TEXAS. CONDITIONS ACROSS
THE WESTERN HALF OF THE COUNTRY SHOULD BE MOSTLY DRY WITH
TEMPERATURES GENERALLY AT OR ABOVE AVERAGE. FORECAST HIGHS ON
SATURDAY AND SUNDAY RANGE FROM THE 30S AND 40S IN THE
NORTHERN/CENTRAL ROCKIES AND GREAT BASIN, 50S FOR THE PACIFIC
NORTHWEST AND SOUTHERN ROCKIES, 60S FOR CALIFORNIA AND TEXAS, AND
70S FOR THE DESERT SOUTHWEST.
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