782
FXUS01 KWBC 201921
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
320 PM EDT TUE JUN 20 2023
VALID 00Z WED JUN 21 2023 - 00Z FRI JUN 23 2023
...SEVERE WEATHER POSSIBLE FOR PARTS OF THE GREAT PLAINS, LOWER
MISSISSIPPI VALLEY AND SOUTHEAST TODAY AND WEDNESDAY...
...EXCESSIVE RAINFALL EXPECTED IN PARTS OF THE GREAT PLAINS, LOWER
MISSISSIPPI VALLEY, SOUTHEAST, AND MID-ATLANTIC THROUGH THURSDAY...
..RECORD BREAKING HEAT WAVE PERSISTS IN TEXAS
OVER THE NEXT FEW DAYS, TWO NEARLY STATIONARY FRONTAL BOUNDARIES
WILL DOMINATE THE WEATHER PATTERN IN THE CONTINENTAL UNITED
STATES. ONE WILL DRAPE ACROSS THE SOUTHERN PLAINS, SOUTHEAST, AND
SOUTHERN MID-ATLANTIC. THE SECOND FRONTAL SYSTEM WILL EXTEND FROM
CANADA ACROSS THE NORTHERN AND CENTRAL PLAINS, INTERMOUNTAIN WEST,
AND SOUTHWEST. THE UPPER LEVEL AND SURFACE WEATHER PATTERN WILL BE
FAIRLY STAGNANT THROUGH THE END OF THE WORK WEEK, AND THIS PATTERN
WILL SUPPORT CHANCES OF SHOWERS AND STORMS EACH DAY ACROSS THE
PLAINS, LOWER MISSISSIPPI VALLEY, SOUTHEAST, AND SOUTHERN
MID-ATLANTIC.
SOME STORMS IN THE GREAT PLAINS, LOWER MISSISSIPPI VALLEY AND
SOUTHEAST MAY BE STRONG TO SEVERE, AND THE STORM PREDICTION CENTER
HAS ISSUED A SLIGHT RISK OF SEVERE THUNDERSTORMS (LEVEL 2/5) FOR
PARTS OF THESE REGIONS FOR TODAY AND WEDNESDAY. ISOLATED TO
SCATTERED SEVERE THUNDERSTORMS WILL BE POSSIBLE WITH DAMAGING
WINDS AND LARGE HAIL AS THE MAIN THREATS.
IN ADDITION TO SEVERE THUNDERSTORM THREATS, EXCESSIVE RAINFALL IS
EXPECTED TO THREATEN PARTS OF THE GREAT PLAINS, LOWER MISSISSIPPI
VALLEY, SOUTHEAST, AND MID-ATLANTIC THROUGH THURSDAY. OVER THE
NEXT THREE DAYS, 2-3+ INCHES OF RAINFALL ARE FORECAST FROM
MARYLAND TO THE FLORIDA PANHANDLE AND 1-2+ INCHES OF RAINFALL ARE
FORECAST FOR PARTS OF THE NORTHERN AND CENTRAL PLAINS. LOCALLY
HIGHER AMOUNTS WILL BE POSSIBLE, AND EXCESSIVE RAINFALL MAY LEAD
TO FLASH FLOODING. TODAY THERE IS A SLIGHT RISK OF EXCESSIVE
RAINFALL (LEVEL 2/4) IN EFFECT FOR PARTS OF THE MID-ATLANTIC,
SOUTHEAST, AND LOWER MISSISSIPPI VALLEY AND A MODERATE RISK (LEVEL
3/4) IN EFFECT FOR THE WESTERN CAROLINAS. SLIGHT RISKS OF
EXCESSIVE RAINFALL (LEVEL 2/4) ARE ALSO IN EFFECT FOR PARTS OF THE
GREAT PLAINS, MID-ATLANTIC, AND SOUTHEAST FOR WEDNESDAY AND
THURSDAY.
RECORD BREAKING HEAT IS FORECAST TO CONTINUE IN TEXAS FOR THE NEXT
SEVERAL DAYS AS THE WEATHER PATTERN REMAINS THE SAME. HIGH
TEMPERATURES ARE FORECAST TO BE IN THE 100S AND 110S IN SOUTH,
CENTRAL, AND WEST TEXAS WITH HEAT INDEX VALUES AS HIGH AS 120
DEGREES. EXCESSIVE HEAT WARNINGS AND HEAT ADVISORIES ARE IN EFFECT
FOR MOST OF THE STATE. ABOVE AVERAGE TEMPERATURES WILL ALSO
PERSIST ACROSS THE UPPER MIDWEST THROUGH THE END OF THE WEEK,
WHILE BELOW NORMAL TEMPERATURES PERSIST ACROSS MUCH OF THE WEST,
MID-ATLANTIC, AND SOUTHEAST.
DOLAN
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page