806
FXUS01 KWBC 080739
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
338 AM EDT SUN OCT 08 2023
VALID 12Z SUN OCT 08 2023 - 12Z TUE OCT 10 2023
...HEAVY RAIN FROM THE REMNANTS OF PHILIPPE WILL COME TO AN END
ACROSS MAINE THIS MORNING BUT LINGERING AREAS OF FLOODING AND
GUSTY WINDS WILL REMAIN INTO THE DAY...
...BELOW AVERAGE TEMPERATURES FOR MUCH OF THE GREAT LAKES AND
EASTERN U.S. ALONG WITH LAKE EFFECT RAIN SHOWERS AND THUNDERSTORMS
DOWNWIND OF THE GREAT LAKES...
...COLDER AND WETTER WEATHER TO ARRIVE ON THE WEST COAST MONDAY,
BUT ABOVE AVERAGE WARMTH TO REMAIN FOR THE INTERIOR WEST AND
ROCKIES...
A SWATH OF HEAVY RAIN OVER MAINE EARLY THIS MORNING, TIED TO WHAT
WAS FORMERLY TROPICAL STORM PHILIPPE, WILL MOVE INTO THE CANADIAN
MARITIMES BY THIS AFTERNOON, LEAVING BEHIND AREAS OF FLOODING FROM
ROUGHLY THREE TO FIVE INCHES OF RAIN WHICH IMPACTED THE REGION.
GUSTY WINDS WILL REMAIN DURING THE DAY, ESPECIALLY OVER NORTHERN
MAINE, BUT THESE TOO SHOULD BEGIN TO SUBSIDE THROUGHOUT THE
AFTERNOON.
COOL, FALL-LIKE TEMPERATURES WILL REMAIN OVER THE GREAT LAKES AND
EAST OF THE MISSISSIPPI RIVER OVER THE NEXT COUPLE OF DAYS, AS A
LARGE CLOSED LOW IN THE UPPER LEVELS OF THE ATMOSPHERE REMAINS
SITUATED OVER SOUTHEASTERN CANADA, JUST NORTH OF THE GREAT LAKES.
HIGH TEMPERATURES WILL BE 10 TO 20 DEGREES BELOW AVERAGE FROM THE
GREAT LAKES TO THE MID-ATLANTIC AND SOUTHEAST TODAY, WITH SOME
MODERATION OF TEMPERATURES ON MONDAY BUT REMAINING BELOW AVERAGE.
WITH THE COLD AIR PASSING OVER THE RELATIVELY WARM WATERS OF GREAT
LAKES, LAKE EFFECT SHOWERS AND THUNDERSTORMS WILL BE COMMON FOR
LOCATIONS DOWNWIND (SOUTH AND EAST). A FAVORABLE WIND FETCH ACROSS
LAKE ONTARIO WILL SUPPORT PERSISTENT AND HEAVY RAIN AT TIMES FOR
AREAS IMMEDIATELY SOUTHEAST AND EAST OF THE LAKE, ALLOWING FOR ONE
TO THREE INCHES (LOCALLY HIGHER) WHICH MAY RESULT IN LOCALIZED
AREAS OF FLOODING TODAY AND TONIGHT.
WITH THE EXCEPTION OF ISOLATED, DIURNALLY DRIVEN THUNDERSTORMS FOR
CENTRAL ARIZONA INTO NEW MEXICO, WARM AND DRY CONDITIONS WILL
CONTINUE FOR THE CENTRAL AND WESTERN U.S. TODAY. HIGH TEMPERATURES
ARE EXPECTED TO BE ABOUT 10 TO 20 DEGREES ABOVE AVERAGE FOR MOST
EVERYONE WEST OF THE HIGH PLAINS TODAY, BUT THE ARRIVAL OF A
PACIFIC COLD FRONT WILL BRING COLDER TEMPERATURES AND RAIN FOR
LOCATIONS EXTENDING FROM NORTHERN CALIFORNIA TO WESTERN WASHINGTON
STARTING MONDAY MORNING. COOLER TEMPERATURES WILL SPREAD FROM WEST
TO EAST INTO THE GREAT BASIN BEHIND A COLD FRONT FOR MONDAY INTO
TUESDAY BUT WARM WEATHER WITH HIGHS IN THE MID-70S TO MID-80S WILL
REMAIN FOR LOCATIONS JUST EAST OF THE CONTINENTAL DIVIDE INTO THE
CENTRAL PLAINS.
OTTO
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