Prognostic Meteorological Discussion
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000
FXUS01 KWBC 280634
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
234 AM EDT THU JUL 28 2016

VALID 12Z THU JUL 28 2016 - 12Z SAT JUL 30 2016

...HEAVY RAIN POSSIBLE FROM THE LOWER MISSISSIPPI VALLEY TO THE
MID-ATLANTIC THROUGH FRIDAY...

...SEVERE THUNDERSTORMS POSSIBLE TODAY FOR PORTIONS OF THE PLAINS
AND THE MID-ATLANTIC...

...HOT AND MOSTLY DRY CONDITIONS WILL PERSIST THROUGH FRIDAY
ACROSS THE WEST...

MOISTURE ASSOCIATED WITH AN UPPER-LEVEL LOW THAT ORIGINATED IN THE
TROPICS WILL MERGE INTERACT WITH A STATIONARY FRONTAL BOUNDARY
TODAY, BRINGING NUMEROUS SHOWERS AND THUNDERSTORMS TO AREAS FROM
THE LOWER MISSISSIPPI VALLEY TO THE MID-ATLANTIC. DUE TO THE DEEP
TROPICAL MOISTURE ASSOCIATED WITH THIS SYSTEM, HEAVY RAINFALL IS
POSSIBLE WITH A THREAT FOR FLASH FLOODING. ADDITIONALLY, SOME
THUNDERSTORMS MAY BE SEVERE TODAY ACROSS THE MID-ATLANTIC REGION.
PLEASE REFER TO PRODUCTS ISSUED BY THE STORM PREDICTION CENTER FOR
FURTHER DETAILS ON THE SEVERE WEATHER THREAT. THE SYSTEM WILL
CONTINUE TO MOVE NORTHEASTWARD, SPREADING SHOWERS AND
THUNDERSTORMS INTO THE NORTHEAST TONIGHT INTO FRIDAY. EVEN AFTER
THIS UPPER-LEVEL FEATURE PASSES, THE SURFACE FRONTAL BOUNDARY WILL
LINGER, AND SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE
ACROSS MUCH OF THE EASTERN U.S. INTO SATURDAY.

THE SAME FRONTAL BOUNDARY EXTENDS WEST ACROSS THE PLAINS, AND WILL
FOCUS THE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS IN THAT REGION
TODAY. ACROSS THE CENTRAL AND SOUTHERN PLAINS, SOME THUNDERSTORMS
MAY PRODUCE SEVERE WEATHER AND HEAVY RAINFALL. AS WITH FARTHER
EAST, THE FRONT WILL LINGER ACROSS THE CENTRAL PLAINS INTO FRIDAY
AND SATURDAY, KEEPING SCATTERED SHOWERS AND THUNDERSTORMS A
POSSIBILITY.

ACROSS THE WEST, HIGH PRESSURE ALOFT WILL KEEP CONDITIONS HOT AND
DRY FOR MOST AREAS. ISOLATED AFTERNOON AND EVENING THUNDERSTORMS
ARE POSSIBLE EACH DAY ACROSS THE HIGHER TERRAIN OF THE INTERIOR
SOUTHWEST. HIGH TEMPERATURES ACROSS MOST OF THE WEST ARE FORECAST
TO BE 5 TO 15 DEGREES ABOVE AVERAGE TODAY AND FRIDAY. HEAT
ADVISORIES AND EXCESSIVE HEAT WARNINGS HAVE BEEN ISSUED FOR SOME
AREAS. THE HOT AND DRY CONDITIONS WILL 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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