992
FXUS01 KWBC 141952
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
251 PM EST SUN JAN 14 2024
VALID 00Z MON JAN 15 2024 - 00Z WED JAN 17 2024
...HEAVY-LAKE-EFFECT SNOW DOWNWIND FROM THE LOWER GREAT LAKES AND
HEAVY SNOW FROM PARTS OF THE CENTRAL ROCKIES; SNOW FROM PARTS OF
THE LOWER MISSISSIPPI VALLEY TO THE NORTHEAST...
...THERE IS A THREAT OF RAIN/FREEZING RAIN OVER PARTS OF THE
SOUTHERN PLAINS TO THE SOUTHERN APPALACHIANS...
...TEMPERATURES WILL BE 25 TO 40 DEGREES BELOW AVERAGE FROM THE
NORTHERN ROCKIES TO THE PLAINS, MIDDLE MISSISSIPPI VALLEY, AND
OHIO VALLEY...
COLD HIGH PRESSURE OVER THE PLAINS AND A WAVE OF LOW PRESSURE
ALONG A STATIONARY FRONT EXTENDING FROM THE SOUTHERN HIGH PLAINS
ACROSS THE CENTRAL ROCKIES NORTHWESTWARD TO THE NORTHWEST WILL
PRODUCE HEAVY SNOW OVER PARTS OF THE CENTRAL ROCKIES ON SUNDAY
EVENING INTO MONDAY EVENING. IN CONTRAST, UPPER-LEVEL ENERGY AND
COLD AIR WILL PRODUCE HEAVY LAKE-EFFECT SNOW DOWNWIND FROM THE
LOWER GREAT LAKES. MOISTURE FLOWING NORTHWARD OVER THE
WESTERN/CENTRAL GULF COAST WILL INTERSECT COLD AIR OVER PARTS OF
THE SOUTHERN PLAINS, LOWER MISSISSIPPI VALLEY, TENNESSEE VALLEY,
AND CENTRAL/SOUTHERN APPALACHIANS, CREATING A BROAD BAND OF
RAIN/FREEZING RAIN.
THE COLD AIR ASSOCIATED WITH THE HIGH PRESSURE WILL PRODUCE
DANGEROUSLY COLD WIND CHILLS. THE TEMPERATURES WILL BE 25 TO 40
DEGREES BELOW AVERAGE FROM THE NORTHERN ROCKIES TO THE PLAINS,
MIDDLE MISSISSIPPI VALLEY, AND OHIO VALLEY. IN DETAIL, SUB-ZERO
WIND CHILLS WILL AFFECT MUCH OF THE U.S. AND REACH INTO PORTIONS
OF THE SOUTH. WIND CHILLS BELOW NEGATIVE 30 DEGREES BELOW ZERO
FROM THE NORTHERN ROCKIES TO NORTHERN KANSAS AND INTO IOWA. VALUES
WILL DROP AS LOW AS NEGATIVES 50 DEGREES BELOW ZERO FROM MONTANA
ACROSS THE WESTERN DAKOTAS. THESE WIND CHILLS WILL POSE A RISK OF
FROSTBITE ON EXPOSED SKIN AND HYPOTHERMIA. HAVE A COLD SURVIVAL
KIT IF YOU MUST TRAVEL.
IN ADDITION, LAKE-EFFECT SNOW PERSISTS THROUGH TUESDAY DOWNWIND
FROM THE GREAT LAKES. THE ARRIVAL OF COLDER AIR WILL GENERATE
HEAVY SNOW DOWNWIND OF THE GREAT LAKES THROUGH MIDWEEK, WITH
ADDITIONAL HEAVY ACCUMULATIONS POSSIBLE, ESPECIALLY ACROSS
PORTIONS OF NORTHERN MICHIGAN, WESTERN AND NORTHERN UPSTATE NEW
YORK.
MOREOVER, HAZARDOUS COLD WEATHER WILL PERSIST AND RE-DEVELOP OVER
PARTS OF THE MIDWEST. PARTS OF THE MIDWEST WILL AGAIN EXPERIENCE
NEAR-RECORD, DANGEROUSLY LOW TEMPERATURES AND WIND CHILLS, WITH
SUBFREEZING TEMPERATURES POSSIBLE IN THE DEEP SOUTH BY LATE IN THE
WEEK. HEAVY SNOW AND BLOWING SNOW WILL CONTINUE OVER THE CENTRAL
ROCKIES FROM SUNDAY EVENING INTO MONDAY EVENING.
IN ADDITION, WINTRY PRECIPITATION WILL DEVELOP OVER THE MID-SOUTH
BY LATE SUNDAY. AREAS OF SNOW, SLEET, AND FREEZING RAIN WILL
CONTINUE TO DEVELOP AND EXTEND EAST FROM THE SOUTHERN PLAINS,
THROUGH THE ARKLATEX, AND INTO THE TENNESSEE VALLEY OVERNIGHT
SUNDAY INTO MONDAY. SEVERAL INCHES OF SNOW ARE LIKELY FROM
ARKANSAS THROUGH THE TENNESSEE VALLEY INTO THE SOUTHERN
APPALACHIANS. ACCUMULATING ICE IS EXPECTED FROM PORTIONS OF
CENTRAL AND SOUTHERN TEXAS THROUGH THE LOWER MISSISSIPPI VALLEY
INTO PARTS OF THE TENNESSEE VALLEY AND SOUTHERN APPALACHIANS. PLAN
ON DANGEROUS ROAD CONDITIONS. WITH ARCTIC AIR IN PLACE, IMPACTS
FROM WINTRY WEATHER MAY LAST SEVERAL DAYS, RESULTING IN A
PROLONGED PERIOD OF HAZARDOUS TRAVEL ACROSS SOME AREAS.
MEANWHILE, THE SNOW EXTENDS INTO THE CENTRAL APPALACHIANS AND
MID-ATLANTIC ON MONDAY AND TUESDAY. AREAS OF LIGHT SNOW ARE
EXPECTED TO EXTEND INTO THE CENTRAL APPALACHIANS AND MID-ATLANTIC
BEGINNING EARLY MONDAY BEFORE POTENTIALLY HEAVIER SNOW LIFTS
ACROSS THE REGION LATE MONDAY INTO EARLY TUESDAY. ALSO, ON
TUESDAY, SNOW WILL DEVELOP OVER THE NORTHEAST.
ELSEWHERE, SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER THE FLORIDA
PENINSULA FROM MONDAY INTO TUESDAY.
ZIEGENFELDER
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