Prognostic Meteorological Discussion
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2
000
FXUS01 KWBC 190744
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
244 AM EST SUN NOV 19 2017

VALID 12Z SUN NOV 19 2017 - 12Z TUE NOV 21 2017

...HEAVY PRECIPITATION FOR PARTS OF THE NORTHEAST AND PACIFIC
NORTHWEST, AND DRY FOR THE CENTRAL STATES...

A STRONG STORM SYSTEM CURRENTLY CROSSING NEW ENGLAND WITH A COLD
FRONT EXITING THE EAST COAST SUNDAY MORNING WILL BE ACCOMPANIED BY
PERIODS OF MODERATE TO LOCALLY HEAVY RAIN BEFORE DRIER CONDITIONS
ARRIVE BY MONDAY.  THIS WILL BE ACCOMPANIED BY A PRONOUNCED UPPER
LEVEL TROUGH OVER THE REGION.  GIVEN THE INTENSITY OF THE SURFACE
LOW AND TIGHT PRESSURE GRADIENT, WIDESPREAD GUSTY WINDS ARE
EXPECTED ON SUNDAY AND SUNDAY NIGHT, AND NUMEROUS WIND ADVISORIES
AND A FEW HIGH WIND WARNINGS ARE IN EFFECT FOR WIND GUSTS
EXCEEDING 40 MPH.  LAKE EFFECT SNOW IS ALSO EXPECTED DOWNWIND OF
THE GREAT LAKES OWING TO STRONG COLD AIR ADVECTION OVER THE WARMER
LAKE WATERS.

THE PACIFIC NORTHWEST WILL ALSO HAVE ITS SHARE OF NOTEWORTHY
PRECIPITATION AS AN ATMOSPHERIC RIVER OF MOISTURE FROM THE PACIFIC
REACHES THE COAST, PARTICULARLY FOR WESTERN OREGON AND WASHINGTON.
 SOME LOCATIONS COULD GET SEVERAL INCHES OF RAINFALL BY TUESDAY,
AND HEAVY SNOWFALL FOR THE CASCADES AND NORTHERN ROCKIES, WITH
SOME RANGES GETTING OVER A FOOT OF SNOW.

ELSEWHERE ACROSS THE CONTINENTAL U.S., AN EXPANSIVE HIGH PRESSURE
RIDGE WILL EXPAND FROM THE GREAT BASIN TO THE SOUTHERN PLAINS.
WARM AND DRY CONDITIONS ARE EXPECTED ACROSS MOST OF THE SOUTHWEST
AND SOUTHERN/CENTRAL PLAINS.  FIRE WEATHER CONCERNS WILL EXIST
ACROSS PARTS OF NEW MEXICO AND TEXAS WITH DRY CONDITIONS AND GUSTY
WINDS.

D. HAMRICK

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





USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.