Prognostic Meteorological Discussion
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000
FXUS01 KWBC 262001
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 PM EDT THU MAY 26 2016

VALID 00Z FRI MAY 27 2016 - 00Z SUN MAY 29 2016

...SHOWERS AND THUNDERSTORMS WITH POSSIBLE SEVERE WEATHER WILL
CONTINUE ACROSS MUCH OF THE PLAINS AND INTO THE MIDWEST...

...TROPICAL DOWNPOURS ARE FORECAST TO SPREAD INTO THE COASTAL
SECTIONS OF THE SOUTHEASTERN U.S. DURING THE WEEKEND...

AN UPPER-LEVEL SHORTWAVE TROUGH IS MOVING ACROSS THE SOUTHWESTERN
PART OF THE U.S.  INSTABILITY ASSOCIATED WITH THIS COLD CORE UPPER
TROUGH IS EXPECTED TO TRIGGER SHOWERS AND THUNDERSTORMS FROM THE
SIERRA NEVADA EASTWARD ACROSS THE GREAT BASIN INTO THE CENTRAL AND
SOUTHERN ROCKIES.  SOME OF THE HIGHEST ELEVATIONS ARE COLD ENOUGH
TO SEE SNOW TO FALL.  THESE SHOWERS WILL BE MOST ACTIVE FROM THE
LATE AFTERNOON INTO THE EVENING HOURS, AND SHOULD GRADUALLY TAPER
OFF OVERNIGHT.  THE SAME SHORTWAVE TROUGH WILL MOVE OUT INTO THE
CENTRAL PLAINS ON FRIDAY, AND WILL ACT TO INVIGORATE MORE SHOWERS
AND THUNDERSTORMS WITH POSSIBLE SEVERE WEATHER FROM THE CENTRAL
AND SOUTHERN PLAINS FRIDAY AFTERNOON INTO THE EVENING.  AS THE
MAIN ENERGY SLIDES OFF TOWARDS THE GREAT LAKES AND WEAKENS ON
SATURDAY, THE SEVERE WEATHER THREAT SHOULD GRADUALLY DIMINISH
ACROSS THE PLAINS DURING THE WEEKEND.

COLDER AIR DIPPING DOWN FROM WESTERN CANADA ASSOCIATED WITH AN
UPPER-LEVEL LOW IS EXPECTED TO BRING SOME HIGHER ELEVATION SNOW
ACROSS THE NORTHERN ROCKIES ON SATURDAY.

ELSEWHERE, SUMMER-LIKE HEAT WITH INCREASING HUMIDITY WILL PREVAIL
ALONG MUCH OF THE EASTERN SEABOARD.  FARTHER OFF THE SOUTHEAST
COAST OF THE U.S., THE NATIONAL HURRICANE CENTER HAS BEEN
MONITORING AN AREA OF DISTURBED WEATHER OFF THE BAHAMAS FOR
POTENTIAL TROPICAL CYCLONE FORMATION.  COMPUTER MODELS GENERALLY
AGREE THAT A LOW PRESSURE CENTER WILL APPROACH THE SOUTHEASTERN
U.S. COAST ON SATURDAY.  IT APPEARS THAT TROPICAL DOWNPOURS AHEAD
OF THIS SYSTEM ARE EXPECTED TO REACH THE COASTAL SECTIONS OF THE
SOUTHEASTERN U.S. BY SATURDAY.

KONG


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