758  
FXUS01 KWBC 210754  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
353 AM EDT THU MAR 21 2024  
 
VALID 12Z THU MAR 21 2024 - 12Z SAT MAR 23 2024  
 
...GUSTY WINDS AND SNOW SHOWERS LINGER ACROSS MAINE TODAY AS THE  
NEXT WINTER STORM APPROACHES NORTHERN NEW ENGLAND BY SATURDAY...  
 
...SWATH OF LIGHT TO MODERATE SNOW SPREADS FROM THE NORTHERN  
PLAINS TO THE GREAT LAKES BY FRIDAY; STRONG WINTER STORM EXPECTED  
THIS WEEKEND...  
 
...THUNDERSTORMS AND HEAVY RAIN RETURN TO THE GULF COAST TODAY  
BEFORE UNSETTLED WEATHER SHIFTS TO THE SOUTHEAST AND  
MID-ATLANTIC...  
 
WINTER IS SET TO MAKE A STRONG RETURN OVER THE NEXT SEVERAL DAYS  
ACROSS THE NORTHERN TIER AS MULTIPLE ROUNDS OF POTENTIALLY HEAVY  
SNOW IMPACT PARTS OF THE NATION. A POTENT STORM SYSTEM RAPIDLY  
STRENGTHENING OVER EASTERN MAINE IS ALREADY PRODUCING LOCALLY  
HEAVY SNOW THROUGHOUT THE PINE TREE STATE. ADDITIONAL PERIODS OF  
SNOW CAN BE EXPECTED THROUGH THIS EVENING, AS WELL AS GUSTY WINDS  
ASSOCIATED WITH THE DEVELOPING TIGHT PRESSURE GRADIENT. THE MARCH  
(WEATHER) MADNESS IS FORECAST TO CONTINUE BY LATE FRIDAY INTO  
SATURDAY AS THE NEXT WINTER STORM APPROACHES THE INTERIOR  
NORTHEAST AND NEW ENGLAND. SNOWFALL PROBABILITIES FOR AT LEAST 8  
INCHES OF SNOW ARE HIGH (GREATER THAN 70%) THROUGHOUT NORTHERN  
VERMONT, NEW HAMPSHIRE, AND MUCH OF INTERIOR MAINE. ADDITIONALLY,  
THERE EXISTS MODEST PROBABILITIES (50-70%) FOR OVER A FOOT OF SNOW  
IN THESE REGIONS. RESIDENTS AND VISITORS ARE ADVISED TO REMAIN  
WEATHER AWARE AND PLAN AHEAD IF TRAVELING BETWEEN FRIDAY NIGHT AND  
SATURDAY IN THIS PART OF THE COUNTRY DUE TO THE POSSIBILITY OF  
TREACHEROUS TRAVEL.  
 
SNOW IS ALSO ANTICIPATED TO PRODUCE IMPACTS FROM THE NORTHERN  
ROCKIES AND NORTHERN PLAINS TO THE GREAT LAKES, WITH TWO SYSTEMS  
IMPACTING THE REGION. THE FIRST SYSTEM IS CURRENTLY SPREADING  
LIGHT TO MODERATE SNOW FROM NORTHEAST MONTANA TO THE DAKOTAS AND  
IS EXPECTED TO EXPAND INTO THE UPPER MIDWEST AND GREAT LAKES BY  
FRIDAY. OUTSIDE OF THE HIGHER TERRAIN OF NORTHWEST MONTANA, THE  
HEAVIEST AMOUNTS ARE EXPECTED TO STRETCH FROM SOUTHEAST NORTH  
DAKOTA AND NORTHEAST SOUTH DAKOTA TOWARDS SOUTHERN WISCONSIN AND  
CENTRAL MICHIGAN. MORE SPECIFICALLY, PROBABILITIES FOR AT LEAST 4  
INCHES OF SNOW ARE HIGHEST THROUGHOUT PARTS OF WISCONSIN AND  
MICHIGAN. HOWEVER, SNOWFALL ACCUMULATION COULD BE LIMITED TO  
GRASSY SURFACES DUE TO THE INCREASING MARCH SUN ANGLE AND SNOW  
FALLING DURING THE DAYLIGHT HOURS. IN CASE THIS ROUND OF SNOW  
WASN'T ENOUGH, A SEPARATE SYSTEM IS FORECAST RIGHT ON THE HEELS OF  
THE FIRST AND EXPECTED TO BEGIN SPREADING SNOWFALL THROUGHOUT THE  
NORTHERN PLAINS ON SATURDAY. THIS STORM WILL BE A PART OF A LARGER  
UPPER LEVEL TROUGH ENTERING THE WEST COAST ON FRIDAY AND SPREADING  
PRECIPITATION INLAND. HEAVY SNOW IS LIKELY THROUGHOUT THE SIERRA  
AND HIGH ELEVATIONS OF THE INTERMOUNTAIN WEST, CENTRAL AND  
NORTHERN ROCKIES. ADDITIONAL HEAVY SNOW AND WINTER WEATHER IMPACTS  
WILL CONTINUE INTO EARLY NEXT WEEK ACROSS MUCH OF THE NORTHERN  
PLAINS.  
 
MORE SPRING-LIKE WEATHER IS FORECAST THROUGHOUT THE GULF COAST  
TODAY AS SHOWERS AND THUNDERSTORMS DEVELOP ALONG A FORMING FRONTAL  
BOUNDARY OVER THE TEXAS COASTLINE AS WELL AS UNDERNEATH AN UPPER  
LOW OVER THE SOUTHERN PLAINS. A FEW STORMS COULD TURN SEVERE  
ACROSS PARTS OF TEXAS AND SOUTHWEST LOUISIANA. THE STORM  
PREDICTION CENTER HAS ISSUED A SLIGHT RISK (LEVEL 2/5) OF SEVERE  
THUNDERSTORMS ACROSS SOUTHEAST TEXAS IN ORDER TO HIGHLIGHT THE  
POTENTIAL FOR LARGE HAIL, STRONG WIND GUSTS, AND ISOLATED  
TORNADOES. ADDITIONALLY, HEAVY RAIN COULD LEAD TO ISOLATED  
FLOODING CONCERNS FOR PARTS OF THE SOUTHERN PLAINS AND WESTERN  
GULF COAST TODAY. THIS SYSTEM AND ASSOCIATED STORMINESS ARE  
FORECAST TO SLIDE EAST ON FRIDAY TOWARDS THE SOUTHEAST AND  
SOUTHERN FLORIDA. THE GREATEST IMPACTS ARE EXPECTED ACROSS SOUTH  
FLORIDA, WHERE A FEW STORMS COULD BECOME SEVERE AND HEAVY RAIN  
COULD LEAD TO URBAN FLOODING IMPACTS. A SLIGHT RISK (LEVEL 2/4) OF  
EXCESSIVE RAINFALL HAS BEEN ISSUED FOR THE GOLD COAST. BY  
SATURDAY, MOISTURE SURGING NORTHWARD ALONG A FRONTAL BOUNDARY IS  
EXPECTED TO PROVIDE FOCUS FOR HEAVY RAIN ALONG THE MID-ATLANTIC  
AND NORTHEAST COASTLINE, WITH THE POTENTIAL FOR FLASH FLOODING  
WHERE HEAVIER RAINFALL OCCURS.  
 
SNELL  
 
GRAPHICS AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 
 
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