214
FXUS01 KWBC 091902
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
302 PM EDT FRI AUG 09 2024
VALID 00Z SAT AUG 10 2024 - 00Z MON AUG 12 2024
...THE EFFECTS FROM THE REMNANTS OF DEBBY WILL BEGIN TO DIMINISH
THIS EVENING AS IT RACES INTO SOUTHEASTERN CANADA...
...BELOW AVERAGE TEMPERATURES ON TAP THIS WEEKEND ACROSS A LARGE
PORTION OF THE LOWER 48...
...ABOVE AVERAGE TEMPERATURES CONTINUE ACROSS THE WEST INTO THE
SOUTH, BUT NO RECORD HIGHS EXPECTED...
...NO CHANGES TO THE FIRE WEATHER THREAT AND POOR AIR QUALITY
ACROSS THE NORTHWEST, NORTHERN ROCKIES AND GREAT BASIN...
THE REMNANTS OF DEBBY WILL CONTINUE ITS QUICK NORTHEASTWARD PUSH
FROM NORTHERN NY STATE THIS EVENING INTO SOUTHEAST CANADA FRIDAY
NIGHT. THIS WILL BRING AN END TO WHAT HAS BEEN A HIGHLY
IMPACTFUL, WET AND DESTRUCTIVE TROPICAL SYSTEM THAT HAS BROUGHT
HEAVY RAINS, FLASH AND RIVER FLOODING AND TORNADOES TO AREAS FROM
FLORIDA INTO THE SOUTHEAST, THE MID-ATLANTIC, WESTERN AND NORTHERN
NY STATE INTO NEW ENGLAND. THE LAST VESTIGES OF HEAVY RAINS
ASSOCIATED WITH DEBBY WILL BE PUSHING QUICKLY EASTWARD FROM
NORTHERN NY STATE INTO NEW ENGLAND FROM FRIDAY EVENING INTO FRIDAY
NIGHT AND EARLY SATURDAY MORNING.
IN THE WAKE OF DEBBY PUSHING INTO SOUTHEAST CANADA, THE ASSOCIATED
COLD FRONT WILL PUSH COOLER AND MUCH DRIER AIR EASTWARD INTO THE
EAST COAST THIS WEEKEND. THIS COLD FRONT MARKS THE LEADING EDGE
OF AN AREA OF MUCH BELOW NORMAL TEMPERATURES THAT HAVE BEEN
ENTRENCHED ACROSS LARGE AREAS TO THE EAST OF THE ROCKIES FROM THE
NORTHERN TO CENTRAL PLAINS, INTO THE UPPER TO MID MISSISSIPPI
VALLEY OVER THE PAST FEW DAYS. THE COLD AIRMASS HAS PRODUCED
SEVERAL RECORD LOW MAXIMUM TEMPERATURES OVER THE PAST 24 HOURS
FROM WYOMING INTO NEBRASKA, SOUTH DAKOTA AND MINNESOTA. RECORD
LOW MORNING TEMPERATURES IN THIS AIRMASS ARE ALSO POSSIBLE
SATURDAY MORNING ACROSS PORTIONS OF IOWA, ILLINOIS, MISSOURI AND
OKLAHOMA. IN GENERAL TEMPERATURES WILL BE BELOW AVERAGE FOR
MORNING LOWS AND LATE AFTERNOON HIGHS THIS WEEKEND ACROSS A LARGE
PART OF THE LOWER 48 FROM THE NORTHERN TO CENTRAL PLAINS, EASTWARD
INTO THE UPPER TO MID MISSISSIPPI VALLEY, GREAT LAKES, OHIO VALLEY
AND EVENTUALLY MID-ATLANTIC AND NORTHEAST.
ABOVE AVERAGE TEMPERATURES WILL CONTINUE INTO THIS WEEKEND ACROSS
THE SOUTHEAST, FLORIDA, THE GULF COAST INTO THE SOUTHERN PLAINS
AND WESTWARD INTO THE SOUTHWEST AND ACROSS MUCH OF CALIFORNIA AND
THE GREAT BASIN WHERE A MID TO UPPER LEVEL RIDGE AXIS WILL STRETCH
ACROSS. WHILE THESE AREAS WILL BE ABOVE AVERAGE TEMPERATURE WISE
THIS WEEKEND, RECORDS ARE NOT EXPECTED.
SCATTERED MONSOONAL SHOWERS AND THUNDERSTORMS WILL CONTINUE ON THE
WESTERN PERIPHERY OF THIS MID TO UPPER LEVEL RIDGE, WITH LOCALLY
HEAVY RAINS AND ISOLATED FLASH FLOODING FOR PORTIONS OF THE
SOUTHWEST INTO THE SOUTHERN ROCKIES. MORE ORGANIZED THUNDERSTORM
ACTIVITY MAY PUSH EASTWARD INTO PORTIONS OF THE SOUTHERN TO
CENTRAL HIGH PLAINS LATE FRIDAY NIGHT INTO SATURDAY MORNING,
PRODUCING MORE WIDESPREAD HEAVY RAIN POTENTIAL AND LOCALIZED FLASH
FLOODING.
NO SIGNIFICANT RELIEF ON TAP FOR THE DRY CONDITIONS, LOW RELATIVE
HUMIDITIES AND GUSTY WINDS THAT ARE PRODUCING FIRE WEATHER
CONDITIONS FROM THE NORTHWEST INTO THE NORTHERN ROCKIES AND GREAT
BASIN. THESE FIRE WEATHER CONDITIONS EXPECTED TO PERSIST INTO THE
WEEKEND, ALONG WITH POOR AIR QUALITY FROM SMOKE BEING PRODUCED BY
ONGOING FIRES ACROSS THESE AREAS.
ORAVEC
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