SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
407 AM EDT TUE MAR 12 2013

VALID 12Z TUE MAR 12 2013 - 12Z THU MAR 14 2013

...WIDESPREAD SHOWERS WILL CONTINUE TO DEVELOP AHEAD OF A COLD
FRONT MOVING TOWARDS THE EASTERN SEABOARD ON TUESDAY...

...MODERATE TO HEAVY RAINS WILL SOAK THE EXTREME NORTHWESTERN
CORNER OF THE COUNTRY...

WIDESPREAD SHOWERS WILL CONTINUE TO BREAK OUT AHEAD OF A STRONG
COLD FRONT WORKING ITS WAY EAST OF THE APPALACHIANS ON TUESDAY. 
PLENTY OF MOISTURE GETTING PULLED NORTHWARD OUT OF THE GULF OF
MEXICO COULD LEAD TO PERIODS OF MODERATE TO HEAVY RAINS FROM
FLORIDA TO MAINE...BUT THE FAIRLY PROGRESSIVE NATURE OF THE
PRECIPITATION SHOULD REDUCE THE THREAT FOR SIGNIFICANT FLASH
FLOODING.  THE FRONT WILL BEGIN PUSHING OUT INTO THE ATLANTIC
TUESDAY NIGHT...BRINGING COOLER...DRIER...CONDITIONS INTO THE
EASTERN U.S. ON WEDNESDAY.  OF COURSE...THE COOL NORTHWESTERLY
FLOW FILLING IN BEHIND THE FRONT WILL LEAD TO SOME LIGHT SNOW
SHOWERS DOWNWIND OF THE GREAT LAKES AND ALONG THE UPSLOPE SIDE OF
THE CENTRAL APPALACHIANS.

MODERATE TO HEAVY RAINS WILL SOAK THE EXTREME NORTHWESTERN CORNER
OF THE COUNTRY TUESDAY AND WEDNESDAY AS ONSHORE FLOW INCREASES
WITH A WARM FRONT MOVING INLAND OVER THE PACIFIC NORTHWEST AND
BRITISH COLUMBIA.  TEMPERATURES WILL BE ON THE RISE ACROSS THE
REGION...KEEPING ANY SNOW CONFINED TO THE HIGHER PEAKS OF THE
WASHINGTON CASCADES AND NORTHERN ROCKIES.  ELSEWHERE ACROSS THE
WESTERN HALF OF THE NATION...A BUILDING UPPER RIDGE WILL KEEP
CONDITIONS QUIET THROUGH THE MIDDLE OF THE WORK WEEK.

GERHARDT


GRAPHICS AVAILABLE AT www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php