665
FXUS01 KWBC 040805
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
304 AM EST SAT JAN 04 2025
VALID 12Z SAT JAN 04 2025 - 12Z MON JAN 06 2025
...HEAVY SNOW FROM THE CENTRAL PLAINS TO THE OHIO VALLEY ON
SUNDAY; HEAVY LAKE-EFFECT SNOW DOWNWIND FROM LAKE ONTARIO ON
SATURDAY...
...MODERATE TO HEAVY SNOW FROM THE NORTHERN HIGH PLAINS TO THE
CENTRAL PLAINS ON SATURDAY; 0.25 INCHES OF FREEZING RAIN OVER
PARTS OF THE MIDDLE MISSISSIPPI/OHIO VALLEY ON SUNDAY...
...THERE IS AN ENHANCED RISK (LEVEL 2/5) OF SEVERE THUNDERSTORMS
OVER PARTS OF THE LOWER MISSISSIPPI VALLEY ON SUNDAY...
ON SATURDAY, LOW PRESSURE OVER THE SOUTHERN HIGH PLAINS WILL MOVE
EASTWARD TO THE OHIO VALLEY BY MONDAY. THE STORM WILL CREATE
DISRUPTIVE WINTER WEATHER FROM SATURDAY TO MONDAY. THE MAJOR
WINTER STORM WILL BRING SIGNIFICANT DISRUPTIONS TO THE CENTRAL
PLAINS BY LATE SATURDAY, SPREADING TO THE OHIO VALLEY ON SUNDAY.
SEVERE TRAVEL DELAYS ARE LIKELY, WITH THE STORM REACHING THE
MID-ATLANTIC BY SUNDAY NIGHT INTO MONDAY. ON SATURDAY, THE STORM
WILL PRODUCE MODERATE TO HEAVY SNOW FROM THE NORTHERN HIGH PLAINS
TO THE CENTRAL PLAINS.
MOREOVER, WIDESPREAD HEAVY SNOW WILL ACCOMPANY THE STORM. HEAVY
SNOWFALL IS EXPECTED ACROSS AREAS FROM CENTRAL KANSAS TO OHIO,
ESPECIALLY ALONG AND NORTH OF INTERSTATE 70, WITH A 60-90% CHANCE
OF AT LEAST 8 INCHES OF SNOW ON SUNDAY. FOR SOME, THIS COULD BE
THE HEAVIEST SNOWFALL IN OVER A DECADE. ADDITIONALLY, MODERATE TO
HEAVY SNOW WILL DEVELOP OVER PARTS OF THE NORTHERN MID-ATLANTIC
OVERNIGHT SUNDAY INTO MONDAY.
IN ADDITION, BLIZZARD CONDITIONS WILL DEVELOP OVER THE CENTRAL
PLAINS. WIND GUSTS OVER 35 MPH COMBINED WITH HEAVY SNOW WILL
CREATE BLIZZARD CONDITIONS BY SUNDAY MORNING. WHITEOUT CONDITIONS
WILL MAKE TRAVEL EXTREMELY HAZARDOUS, WITH IMPASSABLE ROADS AND A
HIGH RISK OF MOTORISTS BECOMING STRANDED.
FURTHERMORE, SIGNIFICANT ICING/FREEZING RAIN FOR MIDDLE
MISSISSIPPI/OHIO VALLEYS. SLEET AND FREEZING RAIN ARE EXPECTED
FROM EASTERN KANSAS AND THE OZARKS TO THE OHIO VALLEY. DANGEROUS
TRAVEL IS ANTICIPATED, WITH TREE DAMAGE AND POWER OUTAGES LIKELY
IN AREAS WITH OVER A QUARTER-INCH OF ICE ACCUMULATION. OVERNIGHT
SUNDAY, THE STORM WILL PRODUCE ADDITIONAL ICING IN THE CENTRAL
APPALACHIANS.
ON SUNDAY, AS THE FRONT CROSSES THE SOUTHERN PLAINS AND MOVES INTO
THE LOWER MISSISSIPPI VALLEY, SEVERE THUNDERSTORMS WILL DEVELOP
OVER PARTS OF THE LOWER MISSISSIPPI VALLEY. THEREFORE, THE SPC HAS
ISSUED AN ENHANCED RISK (LEVEL 3/5) OF SEVERE THUNDERSTORMS OVER
PARTS OF THE LOWER MISSISSIPPI VALLEY FROM SUNDAY THROUGH MONDAY
MORNING. THE HAZARDS ASSOCIATED WITH THESE THUNDERSTORMS ARE
FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND GUSTS, HAIL, AND A
FEW TORNADOES.
MEANWHILE, COLD AIR MOVING OVER THE GREAT LAKES AND UPPER-LEVEL
ENERGY OVER THE GREAT LAKES AND NORTHEAST WILL CREATE HEAVY
LAKE-EFFECT SNOW DOWNWIND FROM LAKE ONTARIO THROUGH SUNDAY
MORNING. IN ADDITION, MODERATE LAKE-EFFECT SNOW WILL DEVELOP
DOWNWIND FROM THE UPPER GREAT LAKES AND LAKE ERIE THROUGH SUNDAY
MORNING. FURTHERMORE, LIGHT UPSLOPE SNOW WILL DEVELOP OVER PARTS
OF THE CENTRAL APPALACHIANS ON SATURDAY. ON SUNDAY, THE
LAKE-EFFECT SNOW WILL BECOME LIGHT OVER MOST OF THE LAKES, WHILE
MODERATE TO HEAVY SNOW WILL CONTINUE DOWNWIND FROM LAKE ONTARIO.
LIGHT TO MODERATE SNOW WILL DEVELOP OVER PARTS OF THE NORTHEAST.
FURTHERMORE, WEAK ONSHORE FLOW AND MULTIPLE WEAKENING FRONTS MOVE
ONSHORE OVER THE NORTHWEST. THE SYSTEM WILL PRODUCE COASTAL RAIN
AND HIGHER-ELEVATION SNOW OVER PARTS OF THE PACIFIC NORTHWEST AND
NORTHERN CALIFORNIA THROUGH MONDAY.
ZIEGENFELDER
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HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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