888
FXUS01 KWBC 271856
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
256 PM EDT WED SEP 27 2023
VALID 00Z THU SEP 28 2023 - 00Z SAT SEP 30 2023
...A COOL AND WET WEATHER PATTERN TO PERSIST ACROSS THE PACIFIC
NORTHWEST...
..NO CHANGES TO THE WET PATTERN ACROSS FLORIDA
...SHOWERY PATTERN TO CONTINUE THROUGH THE OHIO VALLEY AND LOWER
LAKES AND DEVELOP ALONG THE MID-ATLANTIC COAST INTO SOUTHERN NEW
ENGLAND...
...WARM DRY CONDITIONS EXPECTED ACROSS MUCH OF THE CENTRAL PORTION
OF THE NATION...
THE RECENT WET WEATHER ALONG THE NORTHWEST COAST WILL CONTINUE
INTO MIDDLE TO LATER PORTIONS OF THE WEEK AS THE RECENT SERIES OF
NORTHEAST PACIFIC FRONTAL BOUNDARIES CONTINUE TO PUSH INLAND.
SCATTERED SHOWERS IN THE WAKE OF THE STRONG FRONT MOVING INLAND
INTO THE NORTHWEST WEDNESDAY/WEDNESDAY NIGHT WILL BE FOLLOWED BY
ANOTHER AREA OF LOW PRESSURE, ASSOCIATED FRONTAL BOUNDARIES AND
ADDITIONAL PRECIPITATION, MOVING TOWARD THE NORTHWEST COAST ON
THURSDAY. WHILE PRECIPIATION HAS BEEN ABOVE AVERAGE OVER THE
PAST WEEK IN THIS WET PATTERN, LONGER TERM DROUGHT CONDITIONS
STILL PLAGUE THE NORTHWEST WITH LARGE PORTIONS OF OREGON AND
WASHINGTON STATE IN SEVERE TO EXCEPTIONAL DROUGHT. THE WET
WEATHER ACROSS THE NORTHWEST IS ALSO SUPPORTING CONTINUED BELOW
AVERAGE TEMPERATURES FROM NORTHERN CALIFORNIA, THROUGH THE PACIFIC
NORTHWEST AND INTO THE NORTHERN ROCKIES. ACROSS THESE AREAS, HIGH
TEMPERATURES ARE EXPECTED TO BE 10 TO 20 DEGREES BELOW AVERAGE
OVER THE NEXT SEVERAL DAYS.
A WET WEATHER PATTERN ALSO EXPECTED TO CONTINUE ACROSS MUCH OF
FLORIDA FOR THE NEXT FEW DAYS. A STATIONARY FRONTAL BOUNDARY IS
FORECAST TO REMAIN ACROSS THE NORTHERN PORTION OF THE PENINSULA
WHILE A MID TO UPPER LEVEL TROF OVER THE GULF OF MEXICO HELPS TO
STREAM ABOVE AVERAGE MOISTURE VALUES ACROSS THE STATE. ADDITIONAL
HEAVY RAINS ARE POSSIBLE ACROSS MUCH OF FLORIDA THURSDAY AND
FRIDAY, WITH ISOLATED FLASH FLOODING POSSIBLE, ESPECIALLY IN
URBANIZED REGIONS.
A SLOW MOVING MID TO UPPER LEVEL LOW ACROSS THE MID-WEST WILL
CONTINUE ITS SLOW SLOG EASTWARD THROUGH THE LOWER LAKES INTO THE
END OF THIS WEEK. THE SHOWERY PATTERN IN ASSOCIATION WITH THIS
SYSTEM WILL CONTINUE TO PRODUCE AREA OF MODERATE TO HEAVY RAINFALL
FROM THE OHIO VALLEY, NORTHWARD INTO PORTIONS OF THE LOWER GREAT
LAKES. ISOLATED FLASH FLOODING IS POSSIBLE WITH THESE RAINS, WITH
THE GREATEST THREAT ACROSS PORTIONS OF WEST CENTRAL KENTUCKY WHERE
THE HEAVIEST RAINFALL IS FORECAST. AS THIS MID TO UPPER LEVEL LOW
PUSHES EASTWARD, IT WILL BEGIN TO DRAW MOISTURE NORTHWESTWARD OFF
THE WESTERN ATLANTIC AND INTO AREAS FROM THE COASTAL MID-ATLANTIC
TO SOUTHERN NEW ENGLAND THURSDAY NIGHT INTO FRIDAY, WITH
INCREASING RAIN CHANCES ACROSS THESE AREAS.
WHILE SEVERAL AREA OF THE NATION WILL BE WET OVER THE NEXT FEW
DAYS, DRY AND WARM WEATHER WILL OCCUR ACROSS LARGE PORTIONS OF THE
NATION FROM THE SOUTHWEST, THROUGH MUCH OF THE GREAT PLAINS,
MISSISSIPPI VALLEY AND WESTERN TO CENTRAL GULF COAST. ACROSS
THESE AREAS, SUMMER LIKE TEMPERATURES ARE EXPECTED, WITH DAY TIME
HIGHS BETWEEN 10 AND 20 DEGREES ABOVE AVERAGE.
ORAVEC
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