342  
FXUS01 KWBC 280759  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
259 AM EST FRI DEC 28 2018  
 
VALID 12Z FRI DEC 28 2018 - 12Z SUN DEC 30 2018  
 
...FLASH FLOODING AND A MARGINAL RISK OF SEVERE THUNDERSTORMS  
POSSIBLE ACROSS PORTIONS OF THE SOUTHEAST TO MID-ATLANTIC...  
 
...SIGNIFICANT WINTER STORM TO BRING HEAVY SNOW AND NEAR BLIZZARD  
CONDITIONS TO MUCH OF NEW MEXICO...  
 
THE HEAVY SNOW LEADING TO BLIZZARD CONDITIONS ACROSS THE NORTHERN  
PLAINS AND THE UPPER MIDWEST WILL WIND DOWN THIS MORNING.  
ADDITIONAL SNOW ACCUMULATIONS CAN BE EXPECTED FROM CENTRAL  
MINNESOTA TO THE UPPER PENINSULA OF MICHIGAN--WITH THE HIGHEST  
ACCUMULATIONS EXPECTED ALONG THE NORTH SHORE OF LAKE SUPERIOR IN  
THE ARROWHEAD OF MINNESOTA. FURTHERMORE, LIGHT SNOW ACCUMULATIONS  
CAN ALSO BE EXPECTED DOWNWIND OF THE LOWER GREAT LAKES OVER THE  
NEXT FEW DAYS ALSO. FARTHER EAST, HEAVY RAINFALL THAT IMPACTED THE  
LOWER MISSISSIPPI VALLEY YESTERDAY WILL SHIFT EASTWARD TODAY--WITH  
THE HEAVIEST AMOUNTS ALONG THE CENTRAL GULF COAST. MODERATE TO  
HEAVY RAINFALL WILL ALSO IMPACT AREAS FROM THE CAROLINAS NORTHWARD  
INTO THE MID-ATLANTIC TODAY. THERE IS A SLIGHT RISK OF FLASH  
FLOODING ALONG THE CENTRAL APPALACHIANS. THE MARGINAL RISK OF  
SEVERE THUNDERSTORMS HAS BEEN HIGHLIGHTED FOR THE SOUTHEAST--SEE  
THE STORM PREDICTION CENTER FOR MORE INFORMATION. THE NEW ENGLAND  
REGION CAN EXPECT MIXED PRECIPITATION--WITH LIGHT SNOW AND ICE  
ACCUMULATIONS. THIS AREA IS CURRENTLY UNDER WINTER WEATHER  
ADVISORIES.  
 
A SECOND WINTER STORM UNDERWAY IS IMPACTING PARTS OF THE SOUTHWEST  
AND IS EXPECTED TO CONTINUE THROUGH SATURDAY AFTERNOON. SNOWFALL  
WILL OVERSPREAD THE REGION FROM SOUTHERN COLORADO SOUTHWARD  
THROUGH EASTERN ARIZONA, NEW MEXICO, AND THE PANHANDLE OF TEXAS.  
THE HEAVIEST SNOWFALL LIKELY ACROSS CENTRAL AND EASTERN NEW MEXICO  
WHERE AS MUCH AS 1 TO 2 FEET IS POSSIBLE IN THE HIGHEST TERRAIN.  
STRONG WINDS WILL ALSO ACCOMPANY THE SNOWFALL, WITH BLIZZARD  
CONDITIONS POSSIBLE.  
 
AFTER A SHORT LULL TODAY AND INTO TOMORROW, ANOTHER ROUND OF RAIN  
AND HIGHER ELEVATION SNOWS ARE EXPECTED TO MOVE INTO THE PACIFIC  
NORTHWEST BEGINNING LATE FRIDAY AND INTO SATURDAY. WITH REGARD TO  
TEMPERATURES ACROSS THE CONTIGUOUS U.S., LOCATIONS AHEAD OF THE  
BIG SYSTEM IN THE CENTRAL STATES WILL EXPERIENCE UNSEASONABLY WARM  
TEMPERATURES WITH AFTERNOON HIGHS FORECAST TO BE AS MUCH AS 10 TO  
20+ DEGREES ABOVE NORMAL ON FRIDAY ESPECIALLY FROM THE OHIO VALLEY  
INTO THE MID-ATLANTIC. MEANWHILE, ACROSS THE MOUNTAINOUS WEST AND  
INTO THE PLAINS, BELOW TO WELL BELOW TEMPERATURES PERSIST THROUGH  
MUCH OF THE SHORT RANGE PERIOD WITH THE GREATEST DEPARTURES  
EXPECTED TO BE ACROSS THE SOUTHERN HIGH PLAINS WHERE DAYTIME HIGHS  
COULD BE 20 TO 30 DEGREES BELOW NORMAL.  
 
REINHART/SANTORELLI  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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