Prognostic Meteorological Discussion
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000
FXUS01 KWBC 271959
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
358 PM EDT TUE JUN 27 2017

VALID 00Z WED JUN 28 2017 - 00Z FRI JUN 30 2017

...SEVERE THUNDERSTORMS AND HEAVY RAIN POSSIBLE FROM THE CENTRAL
AND NORTHERN PLAINS TO THE MIDWEST...

A LOW PRESSURE SYSTEM CURRENTLY MAKING ITS WAY THROUGH THE HIGH
PLAINS IS EXPECTED TO MOVE INTO THE PLAINS TUESDAY NIGHT AND INTO
THE UPPER MIDWEST BY WEDNESDAY. AS THIS LOW AND ITS ASSOCIATED
FRONTS TRACK EASTWARD, SHOWERS AND THUNDERSTORMS WILL MOVE WITH
IT, OVERSPREADING THE NORTHERN AND CENTRAL PLAINS TUESDAY NIGHT
AND INTO THE UPPER MIDWEST BY WEDNESDAY MORNING. SEVERE WEATHER IS
FORECAST FOR PORTIONS OF THE PLAINS TUESDAY NIGHT THROUGH
THURSDAY, PORTIONS OF THE MIDDLE AND UPPER MISSISSIPPI VALLEY ON
WEDNESDAY AND THURSDAY, AND INTO THE OHIO VALLEY ON THURSDAY.
PLEASE REFER TO PRODUCTS ISSUED BY THE STORM PREDICTION CENTER FOR
FURTHER DETAILS ON THE SEVERE WEATHER THREAT. THUNDERSTORMS MAY
PRODUCE LOCALLY HEAVY RAINFALL TONIGHT, BUT A MORE WIDESPREAD
FLASH FLOODING THREAT IS PRESENT FOR PARTS OF THE MIDDLE AND UPPER
MISSISSIPPI VALLEY ON WEDNESDAY AND THURSDAY.

ELSEWHERE, AS A STATIONARY FRONT AND A SURFACE TROUGH ARE EXPECTED
TO LINGER ALONG THE GULF COAST THROUGH THE NEXT COUPLE OF DAYS,
SCATTERED THUNDERSTORMS WILL OCCUR THROUGHOUT THE GULF COAST
THROUGH THE NEXT FEW DAYS, AND INTO THE LOWER MISSISSIPPI VALLEY
AND SOUTHEAST BY THURSDAY. ADDITIONALLY, AS AN UPPER-LEVEL TROUGH
MOVES THROUGH THE NORTHEAST, SHOWERS AND THUNDERSTORMS ARE
POSSIBLE IN THAT AREA.

TEMPERATURE-WISE, BELOW AVERAGE TEMPERATURES ARE FORECAST FOR MUCH
OF THE NORTHERN AND EASTERN PARTS OF THE U.S. THE SOUTHERN PLAINS
AND THE SOUTHWEST WILL CONTINUE TO SEE ABOVE AVERAGE TEMPERATURES.
HOWEVER, IN THE SOUTHWEST, TEMPERATURES WILL NOT BE QUITE AS
EXTREME AS THEY HAVE BEEN IN THE PREVIOUS SEVERAL DAYS. THE
PACIFIC NORTHWEST AND CALIFORNIA ARE EXPECTED TO BE WARMER THAN
AVERAGE BEGINNING ON THURSDAY.

TATE


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

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