Prognostic Meteorological Discussion
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FXUS01 KWBC 291957
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
357 PM EDT WED MAR 29 2017

VALID 00Z THU MAR 30 2017 - 00Z SAT APR 01 2017

...SEVERE THUNDERSTORM POTENTIAL THROUGH THURSDAY OVER THE
MIDDLE/LOWER MISSISSIPPI AND TENNESSEE VALLEYS...

...HEAVY SNOW LIKELY FOR THE NORTHERN/CENTRAL ROCKIES, GREAT BASIN
AND WASATCHS...

...HEAVY RAIN FOR PORTIONS OF THE PACIFIC NORTHWEST AND THE
LOWER/MIDDLE MISSISSIPPI VALLEY...

WIDESPREAD SHOWERS AND THUNDERSTORMS ARE FORECAST FOR MUCH OF THE
CENTRAL U.S AS A ROBUST LOW PRESSURE SYSTEM TRACKS ACROSS THE
MIDWEST AND THROUGH THE TENNESSEE/OHIO VALLEY. THE STORM
PREDICTION CENTER HAS IDENTIFIED CONDITIONS FAVORABLE FOR
CONTINUED SUPPORT FOR SEVERE THUNDERSTORMS DEVELOPMENT ACROSS THE
MIDDLE/LOWER MISSISSIPPI VALLEY AND WESTERN PORTIONS OF THE
TENNESSEE VALLEY TODAY AND THURSDAY. ADDITIONALLY, SOME OF THESE
STORMS MAY PRODUCE HEAVY RAINFALL; WHICH MAY INCREASE THE THREAT
FOR FLASH FLOODING. REFER TO SPC`S CONVECTIVE OUTLOOKS AND WPC`S
EXCESSIVE RAINFALL OUTLOOKS FOR SPECIFIC DETAILS. THIS SYSTEM IS
EXPECTED TO REACH THE APPALACHIANS/MID-ATLANTIC REGION BY FRIDAY
AFTERNOON AND WILL USHER IN SHOWERS AND THUNDERSTORMS TO MUCH OF
THE EASTERN SEABOARD. SNOW MAY DEVELOP OVER PARTS OF THE UPPER
GREAT LAKES OVERNIGHT WEDNESDAY AND INTO THURSDAY EVENING.

UPPER-LEVEL ENERGY OVER THE EASTERN PACIFIC WILL PUSH ONSHORE THE
WEST COAST BY EARLY THURSDAY MORNING; WHICH WILL ALLOW AN
UPPER-LEVEL LOW TO DEVELOP OVER THE GREAT BASIN BY THURSDAY
EVENING. A STREAM OF MOIST ONSHORE FLOW WILL SLOWLY WEAKEN AS IT
MIGRATES SOUTHWARD TO SOUTHERN CALIFORNIA. RAIN AND HIGHEST
ELEVATION SNOW IS FORECAST FOR THE PACIFIC NORTHWEST INTO PARTS OF
THE NORTHERN ROCKIES THIS AFTERNOON AND EVENING -- SPREADING INTO
THE NORTHERN GREAT BASIN AND CENTRAL ROCKIES AS SNOW LEVELS LOWER
BY THURSDAY EVENING. HEAVY SNOW WILL LIKELY OCCUR ALONG THE
NORTHERN/CENTRAL ROCKIES AND THE NORTHERN PORTION OF THE GREAT
BASIN.

CAMPBELL


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