Prognostic Meteorological Discussion
Issued by NWS

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FXUS01 KWBC 270638
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
237 AM EDT WED JUL 27 2016

VALID 12Z WED JUL 27 2016 - 12Z FRI JUL 29 2016

...ABOVE AVERAGE TEMPERATURES EXPECTED TO CONTINUE FOR THE EAST
AND THE WEST...

...HEAVY RAIN POSSIBLE THROUGH THURSDAY FROM THE LOWER MISSISSIPPI
VALLEY TO THE CENTRAL APPALACHIANS...

AN UPPER-LEVEL LOW THAT RESULTED IN NUMEROUS SHOWERS AND
THUNDERSTORMS ALONG THE GULF COAST YESTERDAY WILL MOVE NORTH INTO
THE LOWER MISSISSIPPI VALLEY TODAY. THUS, EXPECT SCATTERED TO
NUMEROUS SHOWERS AND STORMS FROM THE GULF COAST NORTH TO THE LOWER
MISSISSIPPI VALLEY, SOME OF WHICH COULD PRODUCE LOCALLY HEAVY
RAINFALL. ON THURSDAY, THE MOISTURE ASSOCIATED WITH THIS
UPPER-LEVEL LOW WILL INTERACT WITH A STATIONARY FRONTAL BOUNDARY,
RESULTING IN NUMEROUS SHOWERS AND THUNDERSTORMS ONCE AGAIN FOR
PORTIONS OF THE LOWER AND MIDDLE MISSISSIPPI VALLEY AS WELL AS THE
OHIO AND TENNESSEE VALLEYS. THIS AREA OF MOISTURE WILL INTO THE
MID-ATLANTIC AND NORTHEAST ON FRIDAY AHEAD OF THE SLOW-MOVING
FRONTAL BOUNDARY. IN THE MEANTIME, EXPECT HOT CONDITIONS TO
CONTINUE ALONG THE EASTERN SEABOARD, WITH AFTERNOON HIGH
TEMPERATURES TODAY AND THURSDAY EXPECTED TO BE 5 TO 10 DEGREES
ABOVE AVERAGE.

ANOTHER COLD FRONT WILL BRING SHOWERS AND THUNDERSTORMS TO
PORTIONS OF THE CENTRAL/NORTHERN PLAINS AND UPPER MIDWEST TODAY.
ON THURSDAY THIS FRONTAL SYSTEM WILL MERGE WITH THE SYSTEM FARTHER
SOUTH ACROSS THE MISSISSIPPI/OHIO VALLEYS BEFORE CONTINUING TO
MOVE EASTWARD.

ACROSS THE WEST, A RIDGE OF HIGH PRESSURE ALOFT WILL KEEP MOST
AREAS DRY, WITH THE EXCEPTION OF A FEW ISOLATED THUNDERSTORMS
ACROSS ARIZONA AND NEW MEXICO EACH DAY. TEMPERATURES WILL BE 10 TO
15 DEGREES ABOVE AVERAGE ACROSS MOST OF THE WEST THROUGH FRIDAY.
THESE HOT AND DRY CONDITIONS WILL ONLY EXACERBATE DROUGHT
CONDITIONS AND WILDFIRES, IN AREAS EXPERIENCING THEM.


RYAN


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