Prognostic Meteorological Discussion
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000
FXUS01 KWBC 181924
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
323 PM EDT FRI APR 18 2014

VALID 00Z SAT APR 19 2014 - 00Z MON APR 21 2014

...HEAVY RAINFALL LIKELY ACROSS THE SOUTHEASTERN U.S. THROUGH
SATURDAY...

...LIGHT TO MODERATE RAINFALL ACROSS THE NORTHERN TIER OF U.S....

...SCATTERED SHOWERS AND THUNDERSTORMS FOR SOUTHWEST...


HEAVY RAIN WILL CONTINUE MOVING SLOWLY NORTHEASTWARD UP THE
SOUTHEAST COAST THROUGH SATURDAY. A STRONG SOUTHERLY LOW LEVEL JET
WILL TRANSPORT TROPICAL MOISTURE INTO A REGION OF BROAD VERTICAL
MOTION IN THE MID AND UPPER LEVELS. THIS WILL LEAD TO A RATHER
LARGE AREA OF MODERATE TO HEAVY RAINFALL. STRONG HIGH PRESSURE
DOWNSTREAM OF THE SURFACE LOW WILL ACT TO SLOW THE EASTWARD
PROGRESSION OF THIS SYSTEM. SOME THUNDERSTORMS COULD BE SEVERE
THIS AFTERNOON ACROSS FLORIDA.

A SERIES OF MID LEVEL SHORTWAVES WILL MOVE ACROSS THE NORTHERN
TIER OF THE U.S. BRINGING LIGHT TO MODERATE PRECIPITATION TO THE
PACIFIC NORTHWEST, NORTHERN PLAINS, AND GREAT LAKES. A COLD FRONT
PUSHING ACROSS THE NORTHERN PLAINS TODAY WILL REACH THE GREAT
LAKES BY TOMORROW MORNING. COLD AIR IN PLACE OVER NORTHERN
MINNESOTA WILL LEAD TO A PERIOD OF SNOW TOMORROW MORNING BEFORE
WARMER AIR OVERSPREADS THE REGION.

AN APPROACHING MID LEVEL SHORTWAVE COMBINED WITH FAVORABLE
POSITION WITH RESPECT TO A NEARBY UPPER LEVEL JET WILL LEAD TO
WIDESPREAD SCATTERED SHOWERS AND THUNDERSTORMS FOR SATURDAY IN THE
SOUTHWEST U.S. THE SHORTWAVE WILL PUSH OUT OVER THE SOUTHERN
PLAINS BY SUNDAY WITH SHOWER ACTIVITY OVER THE SOUTHWEST COMING TO
AN END.


KREKELER


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





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