Prognostic Meteorological Discussion
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FXUS01 KWBC 251959
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
258 PM EST SAT FEB 25 2017

VALID 00Z SUN FEB 26 2017 - 00Z TUE FEB 28 2017

...STORM SYSTEM TO AFFECT THE FAR EASTERN U.S. AND NEW ENGLAND
TONIGHT...

...SNOW EXPECTED FOR THE GREAT LAKES THROUGH SUNDAY...

...MORE PRECIPITATION EXPECTED FOR THE PACIFIC NORTHWEST AND WEST
COAST TO FINISH OUT THE WEEKEND...

A STRONG SURFACE LOW PRESSURE SYSTEM WILL CONTINUE TO LIFT
NORTHEAST THROUGH EASTERN CANADA THIS EVENING AND OVERNIGHT, WITH
AN ASSOCIATED COLD FRONT EXPECTED TO SWEEP ACROSS AND SURFACE COLD
FRONT WILL CONTINUE TO QUICKLY MOVE EASTWARD ACROSS THE ATLANTIC
SEABOARD AND MUCH OF NEW ENGLAND. THIS WILL RESULT IN SHOWERS AND
THUNDERSTORMS ALONG THE ATLANTIC COAST THROUGH THIS EVENING,
LINGERING INTO THE OVERNIGHT HOURS IN NEW ENGLAND. THE STORM
PREDICTION CENTER HAS MUCH OF THIS AREA IN SLIGHT RISK FOR THIS
AFTERNOON, WITH STORMS HAVING THE POTENTIAL TO PRODUCE DAMAGING
WINDS AND HAIL. PLEASE REFER TO THE STORM PREDICTION WEBSITE FOR
MORE INFORMATION.

IN THE WAKE OF THE COLD FRONT, MOST LOCATIONS ACROSS THE EASTERN
HALF OF THE U.S. ARE SEEING THE RETURN OF MORE SEASONABLE
TEMPERATURES BY FEBRUARY STANDARDS. EXPECT THESE COOLER
TEMPERATURES TO REMAIN IN PLACE FOR THE NEXT FEW DAYS, ALONG WITH
HIGH PRESSURE WHICH WILL KEEP CONDITIONS MOSTLY CLEAR AND DRY INTO
SUNDAY.

BY SUNDAY AFTERNOON, RETURN FLOW BEHIND THE EXITING HIGH PRESSURE,
COUPLED WITH AN INCOMING LOW PRESSURE SYSTEM, WILL ADVECT ENOUGH
MOISTURE FROM THE GULF OF MEXICO TO GENERATE SCATTERED SHOWERS AND
THUNDERSTORMS FROM EASTERN TEXAS TO LOWER MISSISSIPPI VALLEY. RAIN
AND STORMS WILL THEN SPREAD FROM THE LOWER MISSISSIPPI VALLEY
ACROSS MUCH OF THE SOUTHEAST AND TENNESSEE VALLEY.

ANOTHER LOW PRESSURE SYSTEM PASSING NEAR THE UPPER GREAT LAKES
WILL BRING SNOW ACROSS THE REGION TONIGHT THROUGH SUNDAY.

FINALLY, YET ANOTHER SYSTEM IS POISED TO IMPACT THE PACIFIC
NORTHWEST LATE THIS WEEKEND, CONTINUING INTO THE FIRST PART OF THE
WORKWEEK. THIS SYSTEM WILL BRING A WINTRY MIX OF RAIN AND SNOW TO
MUCH OF THE PACIFIC NORTHWEST COAST, WITH LIGHT TO MODERATE SNOW
EXPECTED INLAND, SPREADING EASTWARD ACROSS THE ROCKY MOUNTAINS
THROUGH MONDAY. WINTER WEATHER ADVISORIES ARE IN EFFECT FOR MANY
LOCATIONS ALONG THE PACIFIC NORTHWEST COAST FOR POTENTIAL SNOWFALL
IMPACTS.

WIX


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