478
FXUS01 KWBC 221720
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
119 PM EDT WED OCT 22 2025
VALID 00Z THU OCT 23 2025 - 00Z SAT OCT 25 2025
..CHILLY AND SHOWERY WEATHER ACROSS THE GREAT LAKES TONIGHT
...HEAVY RAIN THREAT EMERGES ACROSS THE SOUTH-CENTRAL PLAINS
THURSDAY NIGHT...
UNSETTLED WEATHER IS EXPECTED TO CONTINUE FROM THE GREAT LAKES TO
THE NORTHEAST FOR THE NEXT COUPLE OF DAYS AS A LOW PRESSURE SYSTEM
CONTAINING MULTIPLE VORTICES WILL BE SLOW TO EXIT. AS COLD AIR
ASSOCIATED WITH AN UPPER-LEVEL LOW MOVES ACROSS, THE INSTABILITY
WILL SUPPORT SHOWERS AND SCATTERED AREAS OF RAIN. THE LOW
PRESSURE WAVE WILL LIFT NORTHWARD INTO THE CANADIAN MARITIMES
WEDNESDAY NIGHT, ALLOWING MUCH OF THE RAIN OVER NEW ENGLAND TO
TAPER OFF BY THEN. HOWEVER, MORE CHILLY AND SHOWERY WEATHER IS
EXPECTED TO CONTINUE THROUGH THURSDAY ACROSS THE GREAT LAKES
BEFORE A DRYING TREND SETS IN THURSDAY NIGHT WHEN THE SYSTEM
WEAKENS AND PUSHES AWAY INTO CANADA. MEANWHILE, COLDER AND DRIER
WEATHER ALONG WITH GUSTY WINDS WILL EXPAND FROM THE MIDWEST AND
OHIO VALLEY INTO THE MID-ATLANTIC AS A HIGH PRESSURE RIDGE BUILDS
IN FROM THE NORTHERN PLAINS.
ACROSS THE NORTHWEST, HEAVY RAINFALL IS FORECAST TO APPROACH THE
AREA FRIDAY MORNING AHEAD OF THE ARRIVAL OF THE MAIN PACIFIC
FRONT. FARTHER SOUTH, SCATTERED THUNDERSTORMS TIED TO A SHORTWAVE
TROUGH ARE EXPECTED ACROSS THE GREAT BASIN AND FOUR CORNERS ON
THURSDAY, WHICH WILL BE LARGELY BENEFICIAL AS THIS REGION REMAINS
UNDER DROUGHT CONDITIONS. BY THURSDAY NIGHT INTO FRIDAY MORNING,
THE SHORTWAVE TROUGH WILL BEGIN HEADING TOWARD THE SOUTHERN HIGH
PLAINS. THIS WILL LEAD TO SHOWERS AND THUNDERSTORMS DEVELOPING
OVER THE SOUTH-CENTRAL PLAINS AHEAD OF A WARM FRONT AND A
DEVELOPING SURFACE LOW. THE RAIN WILL THEN EXPAND ACROSS THE
REGION WITH AN INCREASING THREAT OF HEAVY RAINFALL BY FRIDAY
MORNING.
KEBEDE/KONG
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