738
FXUS01 KWBC 311953
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
352 PM EDT MON JUL 31 2023
VALID 00Z TUE AUG 01 2023 - 00Z THU AUG 03 2023
...DANGEROUS HEAT WAVE TO CONTINUE ACROSS PARTS OF THE
SOUTH-CENTRAL U.S. AND THE GULF COAST...
...HEAVY RAINFALL/FLASH FLOOD THREAT FOR PARTS OF THE
NORTH-CENTRAL ROCKIES AND THE MID-MISSISSIPPI VALLEY...
A DANGEROUS HEAT WAVE WILL CONTINUE THIS WEEK ACROSS PARTS OF THE
CENTRAL AND SOUTHERN PLAINS, LOWER MISSISSIPPI VALLEY, AND THE
GULF COAST AS A STUBBORN UPPER LEVEL RIDGE REMAINS ANCHORED IN
PLACE. DAYTIME HIGHS WELL INTO THE 90S AND LOWER 100S, WITH EVEN
HIGHER HEAT INDICES APPROACHING OR EXCEEDING 110F, ARE POSSIBLE.
THESE TEMPERATURES, ALONG WITH OPPRESSIVE OVERNIGHT LOWS NEAR 80,
WILL RESULT IN NUMEROUS RECORDS FOR BOTH DAYTIME HIGHS AND RECORD
WARM OVERNIGHT LOWS. WIDESPREAD HEAT ADVISORIES AND EXCESSIVE HEAT
WARNINGS ARE IN EFFECT. SEE KEY MESSAGES ISSUED BY WPC FOR
ADDITIONAL INFORMATION AND GRAPHICS ASSOCIATED WITH THIS HEAT
WAVE. NORTHERN PORTIONS OF THIS REGION MAY BEGIN TO MODERATE BACK
TOWARDS NORMAL BY WEDNESDAY AS THE RIDGE BECOMES SUPPRESSED TO THE
SOUTH.
MONSOONAL MOISTURE AND VARIOUS SHORTWAVE RIDING UP AND OVER THE
RIDGE WILL ALLOW FOR SHOWERS AND THUNDERSTORMS FROM THE SOUTHWEST
U.S. INTO THE NORTH-CENTRAL ROCKIES AND NORTHERN PLAINS. LOCALLY
HEAVY RAINFALL MAY CONTRIBUTE TO FLASH FLOODING IN SOME LOCATIONS,
WITH WPC HIGHLIGHTING SLIGHT RISK AREAS ON THE EXCESSIVE RAINFALL
OUTLOOK THROUGH WEDNESDAY ACROSS PORTIONS OF COLORADO AND WYOMING.
TO THE EAST, MULTIPLE COMPLEXES OF THUNDERSTORMS WILL RIDE DOWN
THE EAST SIDE OF THE RIDGE INTO PARTS OF THE MID-MISSISSIPPI
VALLEY/MIDWEST. POTENTIAL FOR TRAINING STORMS WILL INCREASE THE
FLASH FLOOD THREAT ACROSS THIS REGION, WITH WPC EXCESSIVE RAINFALL
OUTLOOKS HIGHLIGHTING PARTS OF IOWA, MUCH OF MISSOURI, AND INTO
SOUTHERN ILLINOIS/FAR WESTERN KENTUCKY WITHIN A SLIGHT RISK EACH
DAY.
ELSEWHERE, A COLD FRONT THROUGH THE NORTHERN PLAINS ON TUESDAY
WILL FOCUS SHOWERS AND THUNDERSTORMS ACROSS THIS REGION. LOCALLY
HEAVY RAINFALL ALONG WITH SEVERE WEATHER IS POSSIBLE. SPC HAS A
SLIGHT RISK ON THEIR TUESDAY OUTLOOK FOR SEVERE WEATHER POTENTIAL.
A BOUNDARY LINGERING ACROSS THE SOUTHEAST WILL ALSO ALLOW FOR
DAILY SHOWERS AND STORMS ACROSS FLORIDA AS WELL, WITH LOCALLY
HEAVY RAINFALL POSSIBLE. THE NORTHEAST AND MID-ATLANTIC SHOULD BE
DRY WITH TEMPERATURES NEAR OR EVEN BELOW NORMAL FOR THIS TIME OF
THE YEAR UNDERNEATH OF EXPANSIVE SURFACE HIGH PRESSURE.
SANTORELLI
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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