Prognostic Meteorological Discussion
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FXUS01 KWBC 201226
PMDSPD

SHORT RANGE FORECAST DISCUSSION...AMENDED
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
825 AM EDT SAT SEP 20 2014

VALID 12Z SAT SEP 20 2014 - 12Z MON SEP 22 2014

...HEAVY RAIN WILL CONTINUE TO IMPACT NEW MEXICO AND TEXAS...

...ATLANTIC COASTAL LOW TO BRING SHOWERS AND THUNDERSTORMS TO
FLORIDA AND THE SOUTHEAST COAST...

THE RISK FOR EXCESSIVE RAINFALL AND THE THREAT OF FLASH FLOODING
ACROSS SOUTHEAST NEW MEXICO AND THE BIG BEND/TEXAS PANHANDLE
THROUGH EARLY SUNDAY MORNING REMAINS, AS REMNANT MOISTURE FROM
ODILE CONTINUES TO STREAM OVER PORTIONS OF SOUTHERN NEW MEXICO AND
TEXAS---WITH SHOWERS AND THUNDERSTORMS FOCUSING ALONG A STATIONARY
FRONT DRAPED ACROSS THE SOUTHERN HALF OF THE LONE STAR STATE. THIS
STATIONARY FRONT EXTENDS EASTWARD INTO THE GULF OF MEXICO AND THE
FLORIDA PENINSULA TO THE ATLANTIC OCEAN. A SURFACE WAVE HAS
DEVELOPED ON THE ATLANTIC SIDE OF THE STATIONARY FRONT, AND WILL
SLOWLY MIGRATE NORTHEASTWARD ALONG THE COAST OF GEORGIA AND THE
CAROLINAS THIS AFTERNOON AND TONIGHT. ON SUNDAY, THE SYSTEM WILL
TRACK FROM THE OUTER BANKS TO THE GULF OF MAINE. CURRENT FORECASTS
INDICATE THE BULK OF THE PRECIPITATION WILL REMAIN OFFSHORE, BUT
OCCASIONAL SHOWERS AND LIGHT RAIN WILL AFFECT THE MAJORITY OF THE
IMMEDIATE EAST COAST SHORELINE.

ELSEWHERE, A SERIES OF PACIFIC DISTURBANCES WILL RACE ALONG THE
US-CANADIAN BORDER, WITH SHOWERS AND THUNDERSTORMS EXPECTED TODAY
AND TONIGHT FROM THE GREAT LAKES TO NORTHERN NEW ENGLAND ALONG ITS
WEAKENING COLD FRONT. A SECOND DISTURBANCE WILL MOVE ACROSS THE
NORTHERN PLAINS TONIGHT AND REACH THE OHIO VALLEY BY LATE SUNDAY
MORNING. ITS COLD FRONT WILL SPREAD A DRIER AIRMASS INTO THE
PLAINS AND MIDWEST BY THE END OF THE WEEKEND---MEANWHILE ITS
LEADING EDGE PUSHES THROUGH THE EASTERN SEABOARD AND COALESCES
WITH THE ATLANTIC COASTAL LOW IN THE GULF OF MAINE AND NOVA SCOTIA
LATE SUNDAY NIGHT AND EARLY MONDAY MORNING.

VOJTESAK

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