655  
FXUS01 KWBC 071959  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
259 PM EST WED MAR 07 2018  
 
VALID 00Z THU MAR 08 2018 - 00Z SAT MAR 10 2018  
 
...A NOR'EASTER WILL CONTINUE TO SPREAD SNOW INTO THE NORTHERN  
MID-ATLANTIC AND NORTHEAST...  
   
..AN ACTIVE PATTERN IN THE WEST WILL RESULT IN RAIN AND SNOW
 
 
A STRENGTHENING NOR'EASTER WILL CONTINUE TO PARALLEL THE NORTHEAST  
U.S. COAST ON WEDNESDAY NIGHT AND THURSDAY, AND THEN MOVE WESTWARD  
INTO MAINE BY FRIDAY. AS IT MOVES, SNOW WILL OCCUR NORTH AND WEST  
OF THE LOW. WINTER STORM WARNINGS AND WINTER WEATHER ADVISORIES  
ARE IN PLACE FROM EASTERN PENNSYLVANIA THROUGH THE NORTHEAST. THE  
HEAVIEST SNOW IS EXPECTED TO OCCUR IN MAINE, WHERE OVER 18 INCHES  
OF SNOW IS POSSIBLE THROUGH THE END OF THE WORKWEEK AS THE SURFACE  
LOW LINGERS. THE MAJOR CITIES OF NEW YORK CITY AND BOSTON ARE ON  
THE GRADIENT IN BETWEEN SUBSTANTIAL SNOWFALL TOTALS AND LIGHTER  
SNOWFALL TOTALS, SO THERE IS UNCERTAINTY IN HOW MUCH SNOW WILL  
FALL. SEE YOUR LOCAL FORECAST ON WWW.WEATHER.GOV, AND OUR SNOWFALL  
PROBABILITIES ON OUR INTERACTIVE WINTER WEATHER MAP TO SEE THE  
RANGE OF POSSIBILITIES. FARTHER WEST, THE GREAT LAKES REGION AND  
THE CENTRAL APPALACHIANS WILL ALSO SEE SNOWFALL. 6 TO 8 INCHES OF  
SNOW IS POSSIBLE FOR PORTIONS OF THOSE AREAS.  
 
IN THE WESTERN U.S., MULTIPLE SURFACE AND UPPER-LEVEL LOW PRESSURE  
SYSTEMS WILL LEAD TO PRECIPITATION. RAIN WILL SPREAD INTO THE  
PACIFIC NORTHWEST AND NORTHERN CALIFORNIA WEDNESDAY EVENING AND  
SNOW WILL SPREAD INTO THE HIGHER ELEVATIONS OF THE CASCADES AND  
INTERMOUNTAIN WEST ON WEDNESDAY NIGHT. THROUGH FRIDAY, OVER A FOOT  
OF SNOW IS POSSIBLE IN THE NORTHERN CASCADES, AND 8 TO 12 INCHES  
OF SNOW ARE POSSIBLE IN PORTIONS OF THE NORTHERN ROCKIES. RAINFALL  
TOTALS IN THE LOWER ELEVATIONS WILL BE GENERALLY LIGHT, WITH ABOUT  
AN INCH OR SO OF RAIN EXPECTED.  
 
TEMPERATURE-WISE, THE EASTERN HALF OF THE U.S. WILL BE COOLER THAN  
AVERAGE ON THURSDAY AND FRIDAY. HIGH TEMPERATURES IN THE CENTRAL  
APPALACHIANS ARE FORECAST TO BE UP TO 20 DEGREES BELOW AVERAGE ON  
THURSDAY, SUPPORTING THE CHANCES OF SNOW THERE. FREEZE WARNINGS  
ARE IN PLACE FOR PORTIONS OF THE SOUTHEAST. FROM THE SOUTHWEST  
INTO THE SOUTHERN AND CENTRAL HIGH PLAINS, WARMER THAN NORMAL  
TEMPERATURES ARE EXPECTED. ON FRIDAY, HIGH TEMPERATURES OVER THE  
CENTRAL HIGH PLAINS WILL BE AROUND 15 DEGREES ABOVE AVERAGE.  
 
TATE  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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