503
FXUS01 KWBC 220808
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT WED OCT 22 2025
VALID 12Z WED OCT 22 2025 - 12Z FRI OCT 24 2025
...CHILLY AND SHOWERY WEATHER ACROSS THE GREAT LAKES WITH
LAKE-EFFECT THUNDERSTORM BANDS POSSIBLE AGAIN NEAR LAKE ERIE
TODAY...
...HEAVY RAIN THREAT EMERGES ACROSS THE SOUTH-CENTRAL PLAINS
THURSDAY NIGHT AS SHOWERS AND THUNDERSTORMS DEVELOP...
...LATE OCTOBER NEAR RECORD WARMTH ALONG THE LOWER RIO GRANDE
VALLEY OF SOUTHERN TEXAS...
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
AND ANTECEDENT MOISTURE WILL SUPPORT SHOWERS AND SCATTERED AREAS
OF RAIN, ALONG WITH THE POSSIBILITY OF LAKE-ENHANCED/LAKE-EFFECT
THUNDERSTORMS DOWNWIND OF LAKE ERIE TODAY. RAIN WILL ALSO BE
PREVALENT ACROSS NEW ENGLAND TODAY AS A WAVE OF LOW PRESSURE
DEVELOPS ALONG THE TRAILING COLD FRONT AND MOVES ACROSS THE
REGION. 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 SLOW DRYING TREND SETS IN THURSDAY NIGHT
WHEN THE SYSTEM WEAKENS AND EDGES 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 SOUTH, HIGH TEMPERATURES WILL ONCE AGAIN APPROACH DAILY
RECORD LEVELS THIS AFTERNOON ALONG THE LOWER RIO GRANDE VALLEY OF
SOUTHERN TEXAS WHERE TEMPERATURES WILL ONCE AGAIN SOAR WELL INTO
THE 90S. ACROSS THE NORTHWEST, DRY WEATHER WILL PREVAIL BEFORE A
SERIES OF COLD FRONTS LEADS TO INCREASING CHANCE OF RAIN ALONG THE
COASTLINE BEGINNING ON WEDNESDAY. HEAVIER RAINFALL IS FORECAST TO
APPROACH THE AREA FRIDAY MORNING AHEAD OF THE ARRIVAL OF THE MAIN
PACIFIC FRONT. FURTHER SOUTH, SCATTERED THUNDERSTORMS TIED TO A
SHORTWAVE TROUGH ARE EXPECTED ACROSS THE GREAT BASIN TO THE 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.
KONG
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