827
FXUS01 KWBC 030800
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
300 AM EST FRI JAN 03 2025
VALID 12Z FRI JAN 03 2025 - 12Z SUN JAN 05 2025
...HEAVY LAKE-EFFECT SNOW DOWNWIND FROM LAKES ERIE AND ONTARIO;
MODERATE TO HEAVY LAKE-EFFECT SNOW DOWNWIND FROM THE UPPER GREAT
LAKES...
... MODERATE TO HEAVY SNOW OR THE CASCADES, SIERRA NEVADA
MOUNTAINS, AND THE HIGHER ELEVATION OF THE WEST; 0.1 INCHES OF
FREEZING RAIN OVER PARTS OF THE CENTRAL PLAINS/MIDDLE MISSISSIPPI
VALLEY ON SATURDAY...
...MODERATE TO HEAVY RAIN OVER PARTS OF PACIFIC NORTHWEST AND
NORTHERN CALIFORNIA ON FRIDAY...
COLD HIGH PRESSURE OVER THE PLAINS WILL SLOWLY MOVE EASTWARD TO
THE SOUTHEAST/CENTRAL APPALACHIANS BY SUNDAY. THE COLD AIR AND
UPPER-LEVEL ENERGY OVER THE GREAT LAKES AND NORTHEAST WILL CREATE
HEAVY LAKE-EFFECT SNOW DOWNWIND FROM LAKES ERIE AND ONTARIO
THROUGH SUNDAY. IN ADDITION, MODERATE TO HEAVY LAKE-EFFECT SNOW
WILL DEVELOP DOWNWIND FROM THE UPPER GREAT LAKES THROUGH SUNDAY,
TOO. FURTHERMORE, MODERATE TO HEAVY UPSLOPE SNOW WILL DEVELOP OVER
PARTS OF THE CENTRAL APPALACHIANS ON FRIDAY.
MEANWHILE, A FRONT OVER THE EASTERN PACIFIC WILL MOVE ONSHORE OVER
THE WEST COAST AND MOVE SOUTHEASTWARD TO THE SOUTHERN PLAINS BY
SUNDAY. MOISTURE ASSOCIATED WITH THE SYSTEM WILL PRODUCE MODERATE
TO HEAVY RAIN OVER PARTS OF THE PACIFIC NORTHWEST AND NORTHERN
CALIFORNIA ON FRIDAY. SNOW WILL DEVELOP OVER PARTS OF THE
CASCADES, NORTHERN INTERMOUNTAIN REGION, AND NORTHERN ROCKIES. BY
EARLY AFTERNOON, THE BOUNDARY WILL PASS THE NORTHWEST AND
CALIFORNIA, RAIN WILL CHANGE OVER TO SNOW OVER THE SOUTHERN
CASCADES INTO THE SIERRA NEVADA MOUNTAINS THROUGH SATURDAY MORNING.
A WEAKENING FRONT WILL MOVE CLOSE TO THE PACIFIC NORTHWEST COAST
BY LATE SATURDAY MORNING AND DISSIPATE BY SUNDAY. THE SYSTEM WILL
BRING MORE COASTAL RAIN AND HIGHERâ€ELEVATION SNOW OVER PARTS OF
THE PACIFIC NORTHWEST AND NORTHERN CALIFORNIA THROUGH SUNDAY.
FURTHERMORE, BY SATURDAY AFTERNOON, THE LEAD FRONT WILL MOVE TO
THE SOUTHERN HIGH PLAINS AND INTO THE SOUTHERN PLAINS BY SUNDAY.
THE STORM WILL PRODUCE SIGNIFICANT WINTRY WEATHER, WITH IMPACTS
OVER THE CENTRAL PLAINS BY LATE SATURDAY AND THE OHIO AND
TENNESSEE VALLEYS ON SUNDAY. ADDITIONALLY, THE STORM WILL CREATE
SEVERE TRAVEL DISRUPTIONS.
MOREOVER, AREAS IN THE CENTRAL PLAINS AND CENTRAL MISSISSIPPI
VALLEY, ESPECIALLY ALONG AND NORTH OF INTERSTATE 70, ARE LIKELY TO
EXPERIENCE HEAVY SNOWFALL, WITH A HIGH CHANCE (60-90 PERCENT) OF
AT LEAST 6 INCHES OF SNOW FROM LATE SATURDAY INTO SUNDAY.
SIGNIFICANT SLEET AND FREEZING RAIN ARE ANTICIPATED FROM EASTERN
KANSAS AND THE OZARKS EXTENDING EASTWARD TO THE TENNESSEE AND
LOWER OHIO VALLEYS, ALSO ON SATURDAY INTO SUNDAY.
FURTHER, RAIN WILL DEVELOP OVER PARTS OF THE SOUTHERN PLAINS/LOWER
MISSISSIPPI VALLEY OVERNIGHT SATURDAY, AND SOME AREAS OF SHOWERS
AND THUNDERSTORMS WILL DEVELOP BY SUNDAY MORNING.
ZIEGENFELDER
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