Prognostic Meteorological Discussion
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000
FXUS01 KWBC 172001
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 PM EDT THU AUG 17 2017

VALID 00Z FRI AUG 18 2017 - 00Z SUN AUG 20 2017

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE GREAT LAKES/OHIO VALLEY...

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE SOUTHERN HIGH PLAINS...

...HEAVY RAIN POSSIBLE OVER PARTS OF THE SOUTHERN PLAINS/LOWER
MISSISSIPPI VALLEY...

...HEAVY RAIN POSSIBLE OVER PARTS OF THE MID-ATLANTIC AND
NORTHEAST...

A SURFACE LOW PRESSURE WILL LIFT THROUGH THE GREAT LAKES REGION
AND CONTINUE THROUGH SOUTHERN ONTARIO AND QUEBEC... WITH A COLD
FRONT EXTENDING FROM THE LOW THROUGH THE
OHIO/TENNESSEE/MISSISSIPPI VALLEYS AND A WARM FRONT LIFTING
THROUGH THE APPALACHIANS AND NORTHEAST. SHOWERS AND THUNDERSTORMS
WILL DEVELOP ALONG AND AHEAD OF THE FRONTS OVER THE NEXT FEW DAYS.
A FEW OF THESE STORMS WILL LIKELY BECOME STRONG, OR SEVERE,
PRODUCING PERIODS OF HIGHER RAINFALL. ON FRIDAY PORTIONS OF THE
MID-ATLANTIC AND NORTHEAST WILL HAVE SLIGHT RISK FOR FLASH
FLOODING.
FOR THE SOUTHEAST, MOISTURE RICH AIR AND DAYTIME HEATING WILL AID
IN PRODUCING SHOWERS AND THUNDERSTORMS OVER THE AREA THROUGH
SATURDAY.

UPPER-LEVEL ENERGY CROSSING THE ROCKIES WILL SPIN UP A SURFACE LOW
PRESSURE EAST OF THE SOUTHERN ROCKIES AND LIFT AS A WARM FRONT
THROUGH THE SOUTHERN AND CENTRAL PLAINS. SHOWERS AND THUNDERSTORMS
WILL FOCUS ALONG THIS FRONTAL BOUNDARY INTO THE WEEKEND.

CAMPBELL



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