750  
FXUS01 KWBC 270758  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
258 AM EST TUE FEB 27 2024  
 
VALID 12Z TUE FEB 27 2024 - 12Z THU FEB 29 2024  
 
...HEAVY SNOW RETURNS OVER PARTS OF THE CASCADES, THE NORTHERN  
INTERMOUNTAIN REGION, AND NORTHERN ROCKIES ON WEDNESDAY...  
 
...HEAVY SNOW OVER PARTS OF THE UPPER MISSISSIPPI VALLEY AND  
MODERATE TO HEAVY SNOW OVER THE CASCADES TO CENTRAL ROCKIES ON  
TUESDAY...  
 
...LIGHT TO MODERATE SNOW OVER THE GREAT LAKES, CENTRAL  
APPALACHIANS, AND NORTHEAST ON WEDNESDAY...  
 
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF  
THE OHIO VALLEY/GREAT LAKES ON TUESDAY...  
 
A STRONG WINTER STORM AND COLD FRONT WILL CONTINUE TO PROGRESS  
THROUGH THE WEST, REACHING THE CENTRAL ROCKIES ON TUESDAY.  
FURTHERMORE, THE STORM WILL CREATE NEAR-BLIZZARD CONDITIONS,  
RESULTING IN DANGEROUS TRAVEL. SNOWFALL RATES OF 1-2 INCHES PER  
HOUR WILL MOVE INTO THE GREAT BASIN AND CENTRAL ROCKIES ON  
TUESDAY. THESE SNOW RATES COMBINED WITH WINDS GUSTING 50-65 MPH  
WILL PRODUCE NEAR-BLIZZARD CONDITIONS WITH SIGNIFICANTLY REDUCED  
VISIBILITY AND SNOW-COVERED ROADS LEADING TO DANGEROUS TRAVEL.  
FURTHER, SIGNIFICANT SNOW ACCUMULATIONS WILL OCCUR ACROSS THE  
COLORADO ROCKIES SOUTHWARD INTO THE SAN JUANS AND SANGRE DE  
CRISTOS; THERE IS A HIGH CHANCE (GREATER THAN 70%) OF MORE THAN 8  
INCHES OF SNOW IN THE HIGHER ELEVATIONS.  
 
IN ADDITION, WIDESPREAD SNOW SQUALLS ARE EXPECTED TO DEVELOP ALONG  
THE PATH OF THE COLD FRONT FROM UTAH TO WYOMING AND COLORADO ON  
TUESDAY. WHERE SNOW SQUALLS OCCUR, INTENSE SNOW RATES WILL PRODUCE  
RAPID DROPS IN VISIBILITY AND ICING ON ROADWAYS, RESULTING IN  
DANGEROUS TRAVEL.  
 
IN ADDITION, MUCH COLDER AIR WILL MOVE IN BEHIND THE STRONG COLD  
FRONT. TEMPERATURES WILL FALL INTO THE TEENS AND SINGLE DIGITS  
TUESDAY MORNING THROUGHOUT THE INTERMOUNTAIN WEST.  
 
ANOTHER POWERFUL STORM WILL MOVE OVER THE WEST, PRODUCING A  
SIGNIFICANT WINTER STORM OVER THE PACIFIC NORTHWEST LATE WEDNESDAY  
INTO THURSDAY, AS HEAVY SNOW RETURNS TO THE NORTHERN CASCADES AND  
NORTHERN INTERMOUNTAIN REGION.  
 
MEANWHILE, ON TUESDAY, A FRONT EXTENDING FROM THE UPPER GREAT  
LAKES TO THE CENTRAL ROCKIES WILL CREATE HEAVY SNOW OVER PARTS OF  
THE UPPER MISSISSIPPI VALLEY AND MODERATE TO HEAVY SNOW OVER THE  
UPPER GREAT LAKES. AHEAD OF THE FRONT, SOUTHERLY WIND WILL BRING  
WARM TEMPERATURES OF 15 TO 30 DEGREES ABOVE AVERAGE TO THE  
SOUTHERN PLAINS TO THE GREAT LAKES. THE WARM AND DRY CONDITIONS  
WITH GUSTY WINDS ACROSS THE SOUTHERN PLAINS HAVE RESULTED IN AN  
ELEVATED RISK OF FIRE WEATHER (LEVEL 1/3) FROM THE STORM  
PREDICTION CENTER ON TUESDAY.  
 
ADDITIONALLY, MOISTURE FROM THE WESTERN GULF OF MEXICO WILL STREAM  
NORTHWARD OVER THE SOUTHERN PLAINS, MIDDLE/LOWER MISSISSIPPI  
VALLEY, AND OHIO VALLEY. THE MOISTURE WILL AID IN CREATING SHOWERS  
AND SEVERE THUNDERSTORMS OVER PARTS OF THE OHIO VALLEY. THEREFORE,  
THE SPC HAS ISSUED A SLIGHT RISK (LEVEL 2/5) OF SEVERE  
THUNDERSTORMS OVER PARTS OF THE OHIO VALLEY, MIDDLE MISSISSIPPI  
VALLEY, AND GREAT LAKES THROUGH WEDNESDAY MORNING. THE HAZARDS  
ASSOCIATED WITH THESE THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE  
THUNDERSTORM WIND GUSTS, HAIL, AND A FEW TORNADOES. FURTHER, THERE  
IS AN INCREASED THREAT OF HAIL TWO INCHES OR GREATER OVER PARTS OF  
SOUTHWESTERN MICHIGAN, MOST OF ILLINOIS AND INDIANA, PLUS  
SOUTHEASTERN MISSOURI.  
 
MOREOVER, AS THE ROBUST FRONT MOVES ACROSS THE GREAT LAKES TO THE  
EAST COAST, MODERATE TO HEAVY SNOW WILL DEVELOP OVER THE GREAT  
LAKES INTO THE NORTHEAST, WITH LIGHT TO MODERATE SNOW OVER THE  
CENTRAL APPALACHIANS ON WEDNESDAY INTO THURSDAY MORNING. AHEAD OF  
THE SNOW, SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER PARTS OF THE  
NORTHEAST. THE BOUNDARY WILL ALSO CREATE SHOWERS AND THUNDERSTORMS  
OVER PARTS OF THE EASTERN OHIO VALLEY, CENTRAL APPALACHIANS, INTO  
THE MID-ATLANTIC AND SOUTHEAST.  
 
ELSEWHERE, UPPER-LEVEL ENERGY MOVING INTO THE SOUTHWEST AND  
SOUTHERN ROCKIES WILL PRODUCE SCATTERED SHOWERS AND THUNDERSTORMS  
FROM WEDNESDAY AFTERNOON INTO THURSDAY MORNING.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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