Prognostic Meteorological Discussion
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FXUS01 KWBC 242056
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
455 PM EDT THU APR 24 2014

VALID 00Z FRI APR 25 2014 - 00Z SUN APR 27 2014

***THUNDERSTORMS FROM THE MIDWEST TO THE EAST COAST THROUGH
FRIDAY***

***ACTIVE WEATHER PATTERN FOR THE WESTERN U.S.***

***REMAINING COLDER THAN AVERAGE ACROSS THE NORTHERN TIER
STATES***

THERE WILL BE TWO MAIN WEATHER SYSTEMS AFFECTING THE CONTINENTAL
U.S. THROUGH SATURDAY.  THE FIRST SYSTEM IS CURRENTLY AFFECTING
THE CENTRAL U.S. WITH SHOWERS AND THUNDERSTORMS EXTENDING FROM THE
UPPER MIDWEST TO THE DEEP SOUTH.  THIS SPRING-LIKE LOW-PRESSURE
SYSTEM WILL HAVE A WARM SECTOR ASSOCIATED WITH IT, AND CONDITIONS
WILL BE FAVORABLE FOR THE DEVELOPMENT OF STRONG TO LOCALLY SEVERE
THUNDERSTORMS FROM MISSOURI TO THE CAROLINAS THROUGH FRIDAY
EVENING.  FARTHER TO THE NORTH ACROSS THE GREAT LAKES AND THE
UPPER MIDWEST, MAINLY LIGHT TO MODERATE RAINFALL IS EXPECTED ON
THE NORTH SIDE OF THE SURFACE LOW TRACKING ACROSS THE OHIO VALLEY.

TEMPERATURES WILL WARM QUICKLY ACROSS THE SOUTHERN AND CENTRAL
PLAINS FOR FRIDAY AND SATURDAY OUT AHEAD OF ANOTHER STORM SYSTEM
MOVING INTO THE WESTERN UNITED STATES. AN UPPER LEVEL TROUGH WILL
AMPLIFY ACROSS THE WEST ON FRIDAY WHILE A COLD FRONT SLOWLY MOVES
THROUGH THE INTERMOUNTAIN REGION. SCATTERED RAIN SHOWERS WILL
CHANGE TO SNOW SHOWERS, MOSTLY ACROSS THE HIGHER ELEVATIONS OF THE
SIERRA NEVADA AND SAWTOOTH RANGES WHERE LOCALLY HEAVY SNOWFALL IS
LIKLEY. LOWER ELEVATIONS OUT WEST WILL STAY MOSTLY RAIN, WITH SNOW
MIXING IN DEPENDING ON ELEVATION. AS THE UPPER LEVEL DISTURBANCE
CONTINUES EAST ON SATURDAY, THE BEGINNING OF AN ACTIVE SEVERE
WEATHER SETUP APPEARS LIKELY, WITH THREATS CONTINUING THROUGH THE
WEEKEND.

HAMRICK


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