Prognostic Meteorological Discussion
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FXUS01 KWBC 180752
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
251 AM EST WED JAN 18 2017

VALID 12Z WED JAN 18 2017 - 12Z FRI JAN 20 2017

...STORMY WEATHER FOR THE PACIFIC NORTHWEST AND EXTENDING
SOUTHWARD OVER CALIFORNIA, AND HEAVY RAIN REMAINS LIKELY FOR THE
GULF COAST...

THE LOW PRESSURE SYSTEM CURRENTLY OVER THE NORTHEAST U.S.
WEDNESDAY MORNING WILL CONTINUE TRACKING EASTWARD AND OUT TO SEA.
PATCHES OF LIGHT RAIN AND SNOW ARE EXPECTED ACROSS NEW YORK AND
NEW ENGLAND THROUGH WEDNESDAY.  WINTER WEATHER ADVISORIES ARE IN
EFFECT FROM EASTERN NEW YORK TO NEW HAMPSHIRE, AND WINTER STORM
WARNINGS ACROSS PARTS OF NEW HAMPSHIRE AND MAINE WHERE THE
GREATEST SNOW TOTALS ARE EXPECTED.  IMPROVING WEATHER CONDITIONS
ARE EXPECTED BY THURSDAY AS THE STORM MOVES WELL OFFSHORE BY THEN.

HEAVY RAIN AND THUNDERSTORMS WILL REMAIN IN THE FORECAST ACROSS
THE DEEP SOUTH THROUGH THURSDAY AS THE SOUTHERN PORTION OF THE
COLD FRONT STALLS OUT AND A NEW SURFACE LOW DEVELOPS ALONG IT.
THE HIGHEST RAINFALL TOTALS ARE ANTICIPATED FROM SOUTHEAST TEXAS
TO TENNESSEE, WHERE A FEW INCHES OF ADDITIONAL RAINFALL IS
POSSIBLE.  SOME STRONG THUNDERSTORMS ARE ALSO LIKELY AND COULD
PRODUCE LOCALIZED FLOODING.

THE WEATHER PATTERN ACROSS THE PACIFIC NORTHWEST HAS BECOME QUITE
ACTIVE AGAIN WITH HEAVY RAIN AND MOUNTAIN SNOW, COMPLIMENTS OF
STRONG ONSHORE FLOW FROM A STRONG LOW PRESSURE SYSTEM WEST OF THE
WASHINGTON COAST.  THIS STORM WILL ALSO PROVIDE CALIFORNIA AND
MUCH OF THE INTERMOUNTAIN WEST WITH SIGNIFICANT PRECIPITATION,
WITH THE HEAVIEST RAIN EXPECTED FOR THE COASTAL MOUNTAIN RANGES
FROM NORTHERN CALIFORNIA TO WASHINGTON.  STRONG AND GUSTY WINDS
ARE ALSO LIKELY NEAR THE COAST AND FOR THE HIGHER ELEVATIONS.

D. HAMRICK


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