495
FXUS01 KWBC 211845
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
245 PM EDT SUN JUL 21 2019
VALID 00Z MON JUL 22 2019 - 00Z WED JUL 24 2019
...MODERATE RISK FOR FLASH FLOODING ACROSS PARTS OF THE NORTHERN
MID-ATLANTIC ON MONDAY...
...SHOWERS AND THUNDERSTORMS LIKELY ALONG A COLD FRONT FROM THE
NORTHEAST TO THE SOUTHERN PLAINS...
...LOCALLY HEAVY RAINFALL POSSIBLE ALONG AND EAST OF THE CENTRAL
AND SOUTHERN ROCKIES MONDAY AND TUESDAY...
THE DANGEROUS HEAT WAVE WHICH ENVELOPED MUCH OF THE MIDWEST TO THE
EAST COAST THIS WEEKEND SHOULD FINALLY BREAK BY MONDAY AS A COLD
FRONT DROPS SOUTHWARD. SHOWERS AND THUNDERSTORMS WILL ACCOMPANY
THIS BOUNDARY FROM THE NORTHEAST TO THE SOUTHERN PLAINS WITH HEAVY
TO EXCESSIVE RAINFALL AND SEVERE WEATHER POSSIBLE. THE BOUNDARY
WILL BE SLOW MOVING, ESPECIALLY ACROSS PARTS OF THE NORTHERN
MID-ATLANTIC, WHICH WILL INCREASE THE THREAT FOR FLASH FLOODING.
WPC HIGHLIGHTS PARTS OF THIS REGION, FROM ROUGHLY NORTHEAST
VIRGINIA TO NEW YORK CITY, WITHIN A MODERATE RISK ON MONDAY. A
SLIGHT RISK EXTENDS INTO SOUTHERN NEW ENGLAND AND BACK TO THE
TENNESSEE VALLEY. MORE WIDESPREAD SHOWERS AND THUNDERSTORMS SHOULD
PUSH INTO PARTS OF THE SOUTHEAST AND GULF COAST STATES BY TUESDAY.
THIS BOUNDARY WILL USHER IN A MUCH APPRECIATED COOLER AIRMASS WITH
MOST OF THE COUNTRY EAST OF THE ROCKIES FEELING NEAR OR BELOW
NORMAL BY TUESDAY.
ELSEWHERE, DAILY AND MAINLY DIURNALLY DRIVEN SHOWERS AND
THUNDERSTORMS WILL DEVELOP ACROSS PARTS OF THE SOUTHWEST AND ALONG
AND EAST OF THE CENTRAL AND SOUTHERN ROCKIES WITH LOCALLY HEAVY TO
EXCESSIVE RAINFALL POSSIBLE. A COLD FRONT MOVING INTO THE PACIFIC
NORTHWEST ON TUESDAY SHOULD BRING INCREASED CHANCES FOR RAIN
ACROSS THE NORTHWEST AND NORTHERN ROCKIES. AHEAD OF THIS, UPPER
LEVEL RIDGING WILL BUILD ACROSS MOST OF THE INTERIOR WEST, KEEPING
TEMPERATURES ABOVE NORMAL FOR THIS TIME OF THE YEAR.
SANTORELLI
GRAPHICS AVAILABLE AT
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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