Prognostic Meteorological Discussion
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000
FXUS01 KWBC 270648
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
248 AM EDT SAT MAY 27 2017

VALID 12Z SAT MAY 27 2017 - 12Z MON MAY 29 2017

...SEVERE THUNDERSTORMS AND HEAVY RAIN POSSIBLE FROM PORTIONS OF
THE PLAINS TO THE MID-ATLANTIC...

...WELL ABOVE AVERAGE TEMPERATURES EXPECTED FOR THE PACIFIC
NORTHWEST...

A FRONTAL BOUNDARY EXTENDING FROM THE SOUTHERN AND CENTRAL PLAINS
TO THE MID-ATLANTIC WILL RESULT IN SCATTERED TO NUMEROUS SHOWERS
AND THUNDERSTORMS TODAY. AN AREA OF LOW PRESSURE IS FORECAST TO
DEVELOP ALONG THE FRONT TODAY ACROSS THE CENTRAL PLAINS. AS THE
LOW MOVES EAST, WIDESPREAD SHOWERS AND THUNDERSTORMS ARE EXPECTED
BY LATE THIS AFTERNOON AND INTO THE EVENING FROM THE SOUTHERN
PLAINS TO THE MID-MISSISSIPPI VALLEY. THE AREA OF THUNDERSTORMS
WILL CONTINUE TO SPREAD EAST OVERNIGHT INTO THE OHIO VALLEY AND
TOWARD THE APPALACHIANS. STRONG TO SEVERE THUNDERSTORMS AS WELL AS
HEAVY RAIN ARE POSSIBLE. THE STORM PREDICTION CENTER IS
FORECASTING A SLIGHT TO MODERATE RISK OF SEVERE THUNDERSTORMS
TODAY AND TONIGHT - PLEASE REFER TO SPC`S CONVECTIVE OUTLOOK
PRODUCTS FOR FURTHER DETAILS. THE POTENTIAL FOR SEVERE
THUNDERSTORMS AND LOCALLY HEAVY RAIN WILL LINGER INTO SUNDAY FROM
MUCH OF TEXAS TO THE OHIO VALLEY. RAIN AND THUNDERSTORMS WILL ALSO
SPREAD INTO THE NORTHEAST ON SUNDAY AS THE LOW PRESSURE SYSTEM
LIFT NORTH INTO ONTARIO.

HIGH PRESSURE WILL STRENGTHEN ACROSS THE WEST COAST STATES THROUGH
THE WEEKEND, WITH DRY CONDITIONS AND WELL ABOVE AVERAGE
TEMPERATURES EXPECTED. HIGH TEMPERATURES WILL RISE WELL INTO THE
80S TODAY ACROSS THE INTERIOR PACIFIC NORTHWEST, WITH SOME AREAS
REACHING THE LOWER 90S ON SUNDAY. THESE TEMPERATURES ARE 10 TO 20
DEGREES ABOVE AVERAGE.

RYAN

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

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