036
FXUS01 KWBC 071948
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
348 PM EDT WED AUG 07 2024
VALID 00Z THU AUG 08 2024 - 00Z SAT AUG 10 2024
...DEBBY TO MOVE SLOWLY INLAND THROUGH NORTHEAST SOUTH CAROLINA
INTO WESTERN NORTH CAROLINA WEDNESDAY NIGHT-THURSDAY, THEN MORE
RAPIDLY NORTHEASTWARD FRIDAY-SATURDAY FROM THE CENTRAL
APPALACHIANS INTO NORTHERN NEW ENGLAND...
...HEAVY RAINS, FLASH AND RIVER FLOODING LIKELY ALONG AND TO THE
NORTH AND NORTHEAST OF DEBBY, WHILE ISOLATED TORNADOES POSSIBLE TO
THE EAST OF THE TRACK...
...MUCH ABOVE AVERAGE TEMPERATURES TO PERSIST NEXT TWO DAYS ACROSS
MUCH OF THE WEST INTO THE SOUTHERN PLAINS AND SOUTH, WHILE BELOW
AVERAGE TEMPERATURES SPREAD ACROSS THE NORTHERN AND CENTRAL PLAINS
AND UPPER MISSISSIPPI VALLEY...
...RECORD HEAT COMING TO AND END FROM THE SOUTHWEST INTO THE SOUTH
BY THE END OF THE WEEK...
...FIRE WEATHER THREAT AND POOR AIR QUALITY CONTINUE FROM THE
PACIFIC NORTHWEST INTO THE NORTHERN ROCKIES AND GREAT BASIN...
DEBBY WILL MAKE ITS SECOND U.S. LANDFALL WEDNESDAY EVENING ALONG
THE SOUTH CAROLINA COAST AND PUSH SLOWLY NORTHWESTWARD THROUGH
NORTHEAST SOUTH CAROLINA WEDNESDAY NIGHT INTO THURSDAY, ACROSS
WESTERN NORTH CAROLINA DURING THURSDAY AND THEN ACCELERATE TO THE
NORTHEAST FROM THE CENTRAL APPALACHIANS INTO NORTHERN NEW ENGLAND
FRIDAY INTO SATURDAY. SUSTAINED WINDS WITH DEBBY WILL BE
LESSENING AS THE STORM PUSHES INLAND AND WEAKENS, WITH HEAVY
RAINS, FLASH FLOODING AND RIVER FLOODING BEING THE PRIMARY THREAT
AS THE SYSTEM PUSHES NORTHWESTWARD AND THEN MORE TO THE NORTH AND
NORTHEAST OVER THE NEXT FEW DAYS. THE CONTINUED SLOW MOTIONS OF
DEBBY THROUGH THURSDAY WILL PRODUCE RAINFALL TOTALS IN THE 4-8
INCH RANGE, WITH LOCALLY HEAVIER AMOUNTS, ACROSS NORTHEAST SOUTH
CAROLINA, SOUTHEAST TO CENTRAL NORTH CAROLINA INTO WESTERN
VIRGINIA, EASTERN WEST VIRGINIA AND FAR WESTERN MARYLAND. FLOOD
WATCHES ARE CURRENTLY IN EFFECT ACROSS THESE AREAS, AFFECTING
APPROXIMATELY 19 MILLION PEOPLE. AS THE STORM BEGINS TO
ACCELERATE TO THE NORTHEAST ON FRIDAY THROUGH THE NORTHERN
MID-ATLANTIC, NORTHERN NY STATE AND NORTHERN NEW ENGLAND, EXPECTED
PRECIPITATION AMOUNTS WILL LIKELY BE LESS THAN WHEN THE STORM IS
SLOWER MOVING. STILL, RAINFALL TOTALS OF 2-4" LIKELY ACROSS
CENTRAL TO EASTERN PENNSYLVANIA, CENTRAL TO NORTHERN NY STATE INTO
NORTHERN NEW ENGLAND, CONTINUING THE THREAT OF FLASH AND RIVER
FLOODING ACROSS THESE AREAS.
NO LET UP TO THE MUCH ABOVE AVERAGE TEMPERATURES OVER THE NEXT TWO
DAYS ACROSS MUCH OF THE WEST INTO THE SOUTHERN PLAINS AND SOUTH,
WITH RECORD HIGH POTENTIAL THURSDAY ACROSS PORTIONS OF TEXAS AND
THE NORTHEAST GULF COAST FROM SOUTHEAST LOUISIANA INTO NORTH
FLORIDA AND AGAIN ON FRIDAY FROM SOUTHEAST LOUISIANA INTO THE
FLORIDA PANHANDLE. WHILE TEMPERATURES ARE STILL ABOVE AVERAGE
FROM THE WEST INTO THE SOUTH OVER THE NEXT FEW DAYS, IT DOES
APPEAR THAT RECORD HIGH POTENTIAL WILL BE COMING TO AN END BY THE
WEEKEND, HEAT ADVISORIES ARE CURRENTLY IN EFFECT ACROSS THE
SOUTHERN PLAINS INTO THE SOUTH, AFFECTING NEARLY 44 MILLION PEOPLE.
IN CONTRAST TO THE MUCH ABOVE AVERAGE TEMPERATURES AND RECORD HEAT
ACROSS THE SOUTH, MUCH COOLER AIR WILL CONTINUE TO SINK SOUTHWARD
IN THE WAKE OF A STRONG FRONT CURRENTLY STRETCHING FROM THE UPPER
MISSISSIPPI VALLEY INTO THE NORTHERN PLAINS. THIS STRONG FRONT
WILL PUSH MUCH BELOW AVERAGE TEMPERATURES SOUTHWARD INTO THE
CENTRAL PLAINS AND UPPER TO MID MISSISSIPPI VALLEY OVER THE NEXT
TWO DAYS. THERE IS EVEN POTENTIAL FOR A FEW RECORD COLD MAXIMUM
TEMPERATURES ON THURSDAY AND FRIDAY FROM SOUTHEAST WYOMING INTO
SOUTHWEST TO SOUTHERN NEBRASKA AND ACROSS NORTHERN MINNESOTA.
NO LET UP TO THE FIRE WEATHER RISK AND POOR AIR QUALITY FROM
ONGOING FIRES FOR THE PACIFIC NORTHWEST INTO THE NORTHERN ROCKIES
AND GREAT BASIN. THESE REGIONS WILL CONTINUE TO SEE DRY
CONDITIONS WITH LOW RELATIVE HUMIDITIES AND GUSTY WINDS,
SUPPORTING THE THREAT FOR ADDITIONAL WILDFIRES AND EXACERBATING
EFFORTS TO CONTROL ONGOING FIRES. RED FLAG WARNINGS AND AIR
QUALITY ALERTS ARE IN EFFECT ACROSS PORTIONS OF WASHINGTON STATE,
OREGON, IDAHO, WYOMING, COLORADO, NEVADA, UTAH AND ARIZONA.
ORAVEC
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