110
FXUS01 KWBC 310813
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
300 AM EST WED DEC 31 2025
VALID 12Z WED DEC 31 2025 - 12Z FRI JAN 02 2026
...HEAVY LAKE-EFFECT SNOW WILL BE REINFORCED BY AN ALBERTA CLIPPER
HEADING INTO THE NEW YEAR ALONG WITH THE LIKELIHOOD OF SNOW
SQUALLS FROM THE OHIO VALLEY TO PENNSYLVANIA AND WESTERN NEW
YORK...
...RAIN ASSOCIATED WITH AN ANOMALOUS LOW PRESSURE SYSTEM FROM THE
TROPICAL LATITUDES IS FORECAST TO BRING THE THREAT OF FLASH
FLOODING FOR SOUTHERN CALIFORNIA ON NEW YEAR'S EVE INTO NEW YEAR'S
DAY...
...ARCTIC AIR WILL BE REINFORCED ACROSS THE UPPER MIDWEST, GREAT
LAKES AND THE NORTHEAST WHILE A QUICK WARM-UP EMERGES ACROSS THE
GREAT PLAINS...
ARCTIC AIR BEHIND A DEPARTING INTENSE CYCLONE WILL CONTINUE TO
SURGE INTO MUCH OF THE EASTERN TWO-THIRDS OF THE COUNTRY TODAY.
IN THE PROCESS, THE LAKE-EFFECT "SNOW MACHINE" WILL REMAIN ACTIVE
DOWNWIND FROM THE GREAT LAKES, AND WILL BE REINFORCED WITH THE
ARRIVAL OF AN ALBERTA CLIPPER TODAY. THE HIGHEST SNOWFALL TOTALS
ARE FORECAST TO BE DOWNWIND OF LAKES ERIE AND ONTARIO WHERE AN
ADDITIONAL 1-2 FEET WITH LOCALLY 3+ FEET POSSIBLE WITHIN THE
HEAVIEST SNOW BANDS OVER THE NEXT COUPLE OF DAYS. AN REINFORCING
SURGE OF ARCTIC WILL FOLLOW BEHIND THE CLIPPER SYSTEM AS AN ARCTIC
HIGH PRESSURE SYSTEM FROM CANADA WILL DESCEND INTO THE NORTHERN
U.S. TODAY. THE FORCEFUL PUSH OF THE ARCTIC COLD FRONT IS
EXPECTED TO PRODUCE SNOW SHOWERS AND EVEN SNOW SQUALLS LATER TODAY
INTO THE EARLY HOURS OF NEW YEAR'S DAY ACROSS THE OHIO VALLEY TO
PENNSYLVANIA AND WESTERN NEW YORK. ADJACENT AREAS ACROSS THE
UPPER MIDWEST TO THE FAR NORTHERN PLAINS AS WELL AS INTERIOR NEW
ENGLAND CAN ALSO EXPECT SNOW SHOWERS FROM THE CLIPPER. THE SNOW
WILL BE LAST TO TAPER OFF ACROSS WEST VIRGINIA ON NEW YEAR'S DAY
AS THE CLIPPER MOVES QUICKLY ACROSS NEW ENGLAND WHILE
INTENSIFYING. THIS INTENSIFICATION WILL BRING WIDESPREAD
ACCUMULATING SNOWFALL ACROSS MUCH OF NEW ENGLAND ON NEW YEAR'S DAY
FOLLOWED BY MODERATE SNOWFALL MOST LIKELY ACROSS DOWNEAST MAINE
WHERE 8+ INCHES OF SNOW COULD FALL BETWEEN NEW YEAR'S DAY AND
FRIDAY MORNING. WINDS WILL BECOME INCREASINGLY BLUSTERY ACROSS
NEW ENGLAND HEADING INTO FRIDAY WITH LOWERING WIND CHILLS.
MEANWHILE, FREEZING TEMPERATURES WILL REACH AS FAR SOUTH AS
NORTH-CENTRAL FLORIDA EARLY THIS MORNING BEFORE A SLOW MODERATING
TREND SETS IN.
TRANQUIL WEATHER AND MILDER THAN NORMAL TEMPERATURES WILL PREVAIL
ACROSS MUCH OF THE INTERMOUNTAIN WEST UNDER THE INFLUENCE OF A
STABLE HIGH PRESSURE RIDGE AT ALL LEVELS OF THE ATMOSPHERE. THE
MILDER THAN NORMAL TEMPERATURES SPILLED INTO THE NORTHERN PLAINS
THIS MORNING WILL BE SHOVED FARTHER SOUTH INTO THE CENTRAL PLAINS
AS THE AFOREMENTIONED ALBERTA CLIPPER BRINGS A REINFORCING SHOT OF
ARCTIC AIR INTO THE UPPER MIDWEST AND THE GREAT LAKES TODAY.
MEANWHILE, RAIN AHEAD OF A LOW PRESSURE SYSTEM THAT HAS DEVELOPED
IN THE UNUSUALLY SOUTHERN LATITUDES OF THE EASTERN PACIFIC IS
LURKING JUST OFF SOUTHERN CALIFORNIA. THIS SYSTEM IS FORECAST TO
HEAD NORTH AND SPREAD RAIN INTO SOUTHERN CALIFORNIA TODAY BEFORE
EXPANDING NORTH THROUGH MUCH OF CALIFORNIA, THE DESERT SOUTHWEST,
REACHING INTO GREAT BASIN, THE FOUR CORNERS, AS WELL AS CENTRAL
AND SOUTHERN ROCKIES IN THE FORM OF HIGH-ELEVATION SNOWS AS WE
HEAD INTO NEW YEAR'S DAY. IT APPEARS THAT HEAVY RAIN COULD BEGIN
IMPACTING COASTAL SOUTHERN CALIFORNIA INCLUDING LOS ANGELES EARLY
ON NEW YEAR'S DAY ALONG WITH A LOOMING THREAT OF FLASH FLOODING AS
THE TRIPLE-POINT FRONTAL SYSTEM APPROACHES. THE CORE OF THE LOW
PRESSURE SYSTEM IS FORECAST TO PUSH ONSHORE ON NEW YEAR'S DAY AND
GRADUALLY WEAKENS, LEADING TO A GRADUAL REDUCTION OF RAIN CHANCE
ACROSS CALIFORNIA LATER THAT DAY. MEANWHILE, THE EXPANSIVE
MOISTURE SHIELD OF THE SYSTEM WILL KEEP HIGH-ELEVATION SNOW AND
LOW-ELEVATION RAIN IN PLACE FROM THE INTERMOUNTAIN REGION TO THE
NORTHERN AND CENTRAL ROCKIES INTO FRIDAY MORNING.
KONG
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