Prognostic Meteorological Discussion
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000
FXUS01 KWBC 212102
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
502 PM EDT TUE OCT 21 2014

VALID 00Z WED OCT 22 2014 - 00Z FRI OCT 24 2014

...A COASTAL LOW PRESSURE SYSTEM IS EXPECTED TO BRING GUSTY WINDS
AND PERIODS OF HEAVY RAIN TO NEW ENGLAND...

...MODERATE TO HEAVY RAIN IS EXPECTED TO LINGER IN THE PACIFIC
NORTHWEST AND NORTHERN CALIFORNIA...

...SCATTERED SHOWERS AND THUNDERSTORMS WILL MOVE ACROSS THE
PLAINS...

OVER THE NEXT FEW DAYS, A PROMINENT COASTAL LOW PRESSURE SYSTEM
WILL REMAIN ON OUR WEATHER MAP IN THE NORTHEASTERN U.S.  THIS
NOR`EASTER TYPE SYSTEM WILL BE SLOW TO INTENSIFY AND WILL BE SLOW
TO MOVE OUT OF THE NEW ENGLAND AREA.  INTERMITTENT RAIN TODAY IS
EXPECTED TO BECOME MORE WIDESPREAD AND HEAVIER BY LATER ON
THURSDAY AND INTO FRIDAY.  UP TO A FEW INCHES OF RAIN COULD HAVE
FALLEN BY FRIDAY IN THE COASTAL AREAS OF MAINE.  IN ADDITION,
WINDS WILL INCREASE AND SEAS WILL BECOME ROUGH AS THE STORM
GRADUALLY INTENSIFIES JUST OFF THE COAST.

OVER THE WESTERN U.S., A MOISTURE-RICH COLD FRONT CONTINUES TO
APPROACH THE PACIFIC NORTHWEST.  IT APPEARS THAT MODERATE TO HEAVY
RAIN WILL MOVE SLOWLY INLAND ACROSS WASHINGTON AND OREGON,
SPREADING INTO NORTHERN CALIFORNIA BY THURSDAY.  MORE THAN A FEW
INCHES OF RAIN IS FORECAST ALONG THE COASTAL SECTIONS AND INTO THE
CASCADES WHERE EXCESSIVE RAINS COULD LEAD TO FLASH FLOODING.

BETWEEN THESE TWO MAIN WEATHER SYSTEMS, A COLD FRONT IS MOVING
ACROSS THE MID-SECTION OF THE COUNTRY.  MOISTURE ASSOCIATED WITH
THIS FRONT IS SOMEWHAT DEFICIENT.  SHOWERS AND THUNDERSTORMS ARE
EXPECTED TO BE MORE SCATTERED IN NATURE AS THEY SLOWLY ADVANCE
EASTWARD REACHING THE UPPER MIDWEST, MID-MISSISSIPPI VALLEY AND
THE SOUTHERN PLAINS BY FRIDAY.

KONG


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