226  
FXUS01 KWBC 040801  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
300 AM EST SUN MAR 04 2018  
 
VALID 12Z SUN MAR 04 2018 - 12Z TUE MAR 06 2018  
 
...HEAVY SNOW EXPECTED FOR THE GREAT BASIN, NORTHERN ROCKIES AND  
NORTHERN PLAINS OVER THE NEXT COUPLE OF DAYS...  
 
...WIDESPREAD SHOWERS AND EMBEDDED THUNDERSTORMS DEVELOPING OVER  
THE MISSISSIPPI VALLEY AND SPREADING EASTWARD THROUGH THE OHIO AND  
TENNESSEE VALLEYS MONDAY...  
 
...MUCH CALMER WEATHER LIKELY OVER THE NORTHEAST AND MID-ATLANTIC  
REGION THE POWERFUL ATLANTIC STORM CONTINUES TO PULL AWAY FROM THE  
EAST COAST...  
 
THE UPPER-LEVEL TROUGH AND SURFACE COLD FRONT MOVING EAST THROUGH  
THE GREAT BASIN AND ROCKIES THIS WEEKEND WILL MOVE OUT INTO THE  
CENTRAL U.S. EARLY IN THE WEEK. SCATTERED TO WIDESPREAD SNOW OVER  
THE GREAT BASIN AND ROCKIES WILL CONTINUE THROUGH AT LEAST SUNDAY  
NIGHT BEFORE SLOWLY TAPERING OFF AS THE FRONT EXITS INTO THE  
PLAINS. THE HEAVIEST AMOUNTS, UPWARDS OF A FOOT OR MORE, WILL TEND  
TO FOCUS IN THE HIGHER ELEVATIONS ALONG A FRONTAL BOUNDARY SETTING  
UP ACROSS WESTERN WYOMING AND CENTRAL UTAH, WITH UPSLOPE FLOW  
HELPING TO SUPPORT SNOWS OF 6-12 INCHES FARTHER NORTHWARD THROUGH  
CENTRAL MONTANA. THE CENTRAL LOW PRESSURE WITH THIS FRONTAL SYSTEM  
WILL INTENSIFY OVER THE PLAINS ON MONDAY AND WILL PICK UP SPEED.  
HEAVY SNOW WILL SPREAD ACROSS THE NORTHERN HIGH PLAINS TO THE  
UPPER MISSISSIPPI VALLEY.  
 
FARTHER SOUTH...STRENGTHENING WESTERLY FLOW OUT AHEAD OF THIS  
VIGOROUS SYSTEM AND ITS ASSOCIATED COLD FRONT, ALONG WITH VERY LOW  
RELATIVE HUMIDITIES, WILL BRING A THREAT FOR DANGEROUS FIRE  
WEATHER CONDITIONS TO PARTS OF THE CENTRAL AND SOUTHERN HIGH  
PLAINS ON SUNDAY. CONDITIONS WILL IMPROVE SOMEWHAT AS WINDS  
DIMINISH WITH THE PASSAGE OF THE FRONT ON MONDAY. AT THE SAME  
TIME, WARM MOIST AIR WILL TRANSPORT NORTHWARD FROM THE GULF UP THE  
MISSISSIPPI VALLEY. THIS INFLUX OF MOISTURE WILL AID IN THE  
DEVELOPMENT OF WIDESPREAD SHOWERS AND THUNDERSTORMS ONCE THE FRONT  
APPROACHES THE REGION.  
 
MUCH OF THE EAST WILL HAVE CONDITIONS RETURNING TO CALM AND DRY. A  
FEW LOCATIONS WILL CONTINUE TO BE BREEZY. A WEAK COLD FRONT  
DROPPING OUT OF EASTERN CANADA MAY BRING A LITTLE SNOW TO PARTS OF  
THE NORTHEAST ON SUNDAY, BUT AMOUNTS SHOULD BE LIGHT.  
 
CAMPBELL/KLEIN  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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