Prognostic Meteorological Discussion
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000
FXUS01 KWBC 192026
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
426 PM EDT SUN APR 19 2015

VALID 00Z MON APR 20 2015 - 00Z WED APR 22 2015

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR PARTS OF THE
SOUTHERN PLAINS EASTWARD TO THE SOUTHEAST...

...HEAVY RAIN POSSIBLE FROM PARTS OF THE NORTHERN MID-ATLANTIC...

UPPER-LEVEL ENERGY OVER THE SOUTHERN PLAINS WILL MERGE WITH
ANOTHER AREA OF UPPER-LEVEL ENERGY OVER THE UPPER MISSISSIPPI
VALLEY TO FORM A CLOSED UPPER-LEVEL LOW OVER THE UPPER GREAT LAKES
BY TUESDAY.  THE STORM WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER
THE SOUTHEAST THAT WILL MOVE NORTHWARD TO SOUTHERN NEW ENGLAND BY
TUESDAY MORNING.  A SECOND AREA OF SHOWERS AND THUNDERSTORMS WILL
DEVELOP OVER THE LOWER/MIDDLE MISSISSIPPI VALLEY AND MOVE EASTWARD
TO THE MID-ATLANTIC/SOUTHEAST BY MONDAY EVENING BEFORE MOVING OFF
THE EAST COAST BY TUESDAY.  IN ADDITION, RAIN WILL DEVELOP OVER
PARTS OF THE UPPER MISSISSIPPI VALLEY/GREAT LAKES INTO PARTS OF
THE NORTHERN MID-ATLANTIC BY SUNDAY EVENING THAT WILL MOVE
EASTWARD TO THE NORTHEAST BY TUESDAY MORNING.  LIGHT RAIN WILL
LINGER OVER PARTS OF THE LOWER GREAT LAKES ON TUESDAY WHILE SNOW
WILL DEVELOP OVER PARTS OF THE UPPER GREAT LAKES/UPPER MISSISSIPPI
VALLEY.

ELSEWHERE, WEAK UPPER-LEVEL ENERGY WILL AID IN PRODUCING SCATTERED
AREAS OF LIGHT SNOW OVER PARTS OF THE CENTRAL ROCKIES ON SUNDAY
EVENING INTO MONDAY MORNING.  ON MONDAY, WEAK MOISTURE WILL SURGE
NORTHWARD FROM THE GULF OF MEXICO OVER THE SOUTHERN/CENTRAL HIGH
PLAINS THAT WILL AID IN THE DEVELOPMENT OF AN AREA OF SNOW AND
LOWER ELEVATION RAIN OVER PARTS OF THE CENTRAL ROCKIES THAT WILL
MOVE SOUTHEASTWARD TO THE SOUTHERN PLAINS BECOMING AN AREA OF RAIN
BY TUESDAY MORNING.  ADDITIONALLY, MOISTURE COMING OFF THE WESTERN
GULF OF MEXICO WILL AID IN PRODUCING SHOWERS AND THUNDERSTORMS
OVER PARTS OF THE LOWER RIO GRANDE VALLEY EARLY MONDAY INTO
TUESDAY.


ZIEGENFELDER


GRAPHICS AVAILABLE AT WWW.WPC.NCEP.NOAA.GOV
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