840
FXUS01 KWBC 200705
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
304 AM EDT TUE JUN 20 2023
VALID 12Z TUE JUN 20 2023 - 12Z THU JUN 22 2023
...EXCESSIVE RAINFALL AND SEVERE WEATHER LIKELY OVER PARTS OF THE
GREAT PLAINS, LOWER MISSISSIPPI VALLEY, SOUTHEAST AND
MID-ATLANTIC...
..RECORD BREAKING HEAT WAVE PERSISTS IN TEXAS
A RETROGRADING UPPER-LEVEL LOW OVER THE SOUTHEAST WILL GENERATE
SCATTERED SHOWERS AND THUNDERSTORMS FROM THE CENTRAL GULF COAST TO
THE CAROLINAS TODAY. UPSLOPE ENHANCEMENT OF SUBSTANTIAL MOISTURE
OVER SATURATED SOILS WILL SUPPORT AN ENHANCED RISK OF EXCESSIVE
RAINFALL LEADING TO FLASH FLOODING OVER PARTS OF THE WESTERN
CAROLINAS WHERE BETWEEN 1-3 INCHES OF RAIN IS POSSIBLE. A
STATIONARY FRONT DRAPED ACROSS THE SOUTHEAST WILL BE THE FOCUS FOR
HEAVY RAINFALL OVER PARTS OF THE CENTRAL GULF COAST, PARTICULARLY
THE LOUISIANA COAST WHERE 1-3 INCHES OF RAINFALL IS EXPECTED AND A
SLIGHT RISK OF EXCESSIVE RAINFALL IS IN EFFECT. SEVERE
THUNDERSTORMS ARE POSSIBLE OVER THE CENTRAL GULF COAST AND
NORTHERN PLAINS TODAY. DAMAGING WINDS AND LARGE HAIL SHOULD BE THE
MAIN THREATS.
THE UPPER LOW WILL CONTINUE SPINNING OVER THE SOUTHEAST ON
WEDNESDAY. SCATTERED TO ISOLATED SHOWERS AND THUNDERSTORMS WILL
ASCEND FARTHER NORTH INTO THE MID-ATLANTIC AS A RESULT. THERE'S A
SLIGHT RISK OF EXCESSIVE RAINFALL LEADING TO FLASH FLOODING OVER A
SWATH OF THE INTERIOR SOUTHEAST AND MID-ATLANTIC WHERE 1-2 INCHES
OF RAIN IS POSSIBLE. ANOTHER ACTIVE AREA WILL BE THE
CENTRAL/SOUTHERN PLAINS, WHERE EXCESSIVE RAINFALL AND SEVERE
THUNDERSTORMS ARE EXPECTED. LARGE HAIL, AND SEVERE GUSTS WILL BE
THE MAIN HAZARDS WITHIN AREAS OF CONVECTION. POTENTIAL TRAINING OF
STORMS WILL SUPPORT FLASH FLOODING POTENTIAL, PARTICULARLY OVER
PARTS OF WESTERN SOUTH DAKOTA AND NEBRASKA WHERE A SLIGHT RISK OF
EXCESSIVE RAINFALL IS IN EFFECT.
THE RECORD BREAKING HEAT IN TEXAS CAUSED BY A STATIONARY
UPPER-LEVEL RIDGE WILL CONTINUE FOR THE NEXT SEVERAL DAYS. HIGH
TEMPERATURES WILL BE IN THE 100S AND 110S ACROSS SOUTHERN TEXAS.
THERE WILL BE LITTLE RESPITE IN THE EVENINGS AS LOWS ONLY DROP
INTO THE 70S AND 80S. EXCESSIVE HEAT WARNINGS AND HEAT ADVISORIES
ARE IN EFFECT FOR MUCH OF TEXAS AS A RESULT. TROUGHING IN THE WEST
WILL SUPPORT BELOW AVERAGE TEMPERATURES ACROSS THE REGION THROUGH
MIDWEEK. HIGHS IN THE 50S AND 60S WILL BE 10-20 DEGREES BELOW
AVERAGE. THE SOUTHEAST AND MID-ATLANTIC WILL EXPERIENCE COOLER
THAN AVERAGE TEMPERATURES AS WELL DURING THIS SAME TIME AS THE
UPPER LEVEL LOW REMAINS CENTERED OVERHEAD AND SKIES REMAIN CLOUDY.
KEBEDE
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page