Prognostic Meteorological Discussion
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601
FXUS01 KWBC 280810
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
409 AM EDT TUE MAR 28 2017

VALID 12Z TUE MAR 28 2017 - 12Z THU MAR 30 2017

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE
SOUTHERN PLAINS...

...HEAVY SNOW POSSIBLE OVER THE CASCADES AND THE CENTRAL ROCKIES...

...HEAVY RAIN POSSIBLE OVER PARTS OF THE PACIFIC NORTHWEST AND THE
CENTRAL/SOUTHERN PLAINS/LOWER MISSISSIPPI VALLEY...

LOW PRESSURE OVER EASTERN OHIO VALLEY/CENTRAL APPALACHIANS WILL
MOVE OFF THE MID-ATLANTIC COAST OVERNIGHT TUESDAY.  SHOWERS AND
THUNDERSTORMS WILL DEVELOP ALONG AND AHEAD OF THE ASSOCIATED COLD
FRONT FROM THE CENTRAL APPALACHIANS/TENNESSEE VALLEY TO THE
MID-ATLANTIC/SOUTHEAST ON TUESDAY MORNING THAT WILL MOVE OFF THE
MID-ATLANTIC/SOUTHEAST COAST TUESDAY EVENING INTO WEDNESDAY
MORNING.  RAIN WILL ALSO DEVELOP OVER THE LOWER GREAT LAKES INTO
PARTS OF THE NORTHEAST THAT WILL MOVE OFF THE NORTHEAST COAST BY
WEDNESDAY AFTERNOON.  ALSO, SNOW WILL DEVELOP OVER PARTS OF
NORTHERN MAINE WITH A FEW POCKETS OF RAIN/FREEZING RAIN THROUGH
WEDNESDAY MORNING.  SNOW WILL RETURN TO PARTS OF WESTERN NORTHERN
NEW ENGLAND BY WEDNESDAY AFTERNOON INTO EVENING.

MEANWHILE, AN UPPER-LEVEL LOW OVER THE SOUTHWEST WILL SLOWLY
ADVANCE EASTWARD TO SOUTHERN/CENTRAL PLAINS BY WEDNESDAY EVENING.
RAIN AND HIGHER ELEVATION SNOW WILL DEVELOP OVER PARTS OF THE
CENTRAL/SOUTHERN ROCKIES AND NORTHERN/CENTRAL HIGH PLAINS THAT
WILL END BY WEDNESDAY EVENING.  SHOWERS AND THUNDERSTORMS WILL
BEGIN TO DEVELOP OVER PARTS OF THE HIGH SOUTHERN PLAINS ON TUESDAY
MORNING THAT WILL EXPAND INTO PARTS OF THE CENTRAL/SOUTHERN PLAINS
BY TUESDAY EVENING.  OVERNIGHT TUESDAY THE SHOWERS AND
THUNDERSTORM WILL MOVE INTO PARTS OF THE MIDDLE/LOWER MISSISSIPPI
VALLEY THAT WILL BE ENDING OVER MOST OF THE SOUTHERN PLAINS BY
WEDNESDAY EVENING.  ADDITIONALLY, RAIN WILL DEVELOP OVER PARTS OF
THE CENTRAL PLAINS ON TUESDAY MORNING THAT WILL MOVE INTO PARTS OF
THE MIDDLE MISSOURI VALLEY ON WEDNESDAY.

IN THE MEANTIME, ONSHORE FLOW ALONG WITH MULTIPLE UPPER-LEVEL
DISTURBANCES WILL AID IN PRODUCING RAIN AND HIGHER ELEVATION SNOW
OVER PARTS OF THE PACIFIC NORTHWEST.  OVERNIGHT TUESDAY, A PLUME
OF MOISTURE WILL MOVE INTO THE NORTHWEST COAST THAT WILL PRODUCE
HEAVIER RAIN AND HIGHER ELEVATION SNOW OVER THE PACIFIC NORTHWEST
AND EXPANDING INTO PARTS OF THE NORTHERN ROCKIES ON WEDNESDAY
MORNING INTO EVENING.  THE SNOW LEVELS WILL RISE ON WEDNESDAY,
TOO.


ZIEGENFELDER


GRAPHICS AVAILABLE AT WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_WBG.PHP
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