874
ACUS11 KWNS 010427
SWOMCD
SPC MCD 010426
NYZ000-PAZ000-MDZ000-WVZ000-VAZ000-010830-
MESOSCALE DISCUSSION 0001
NWS STORM PREDICTION CENTER NORMAN OK
1026 PM CST WED DEC 31 2025
AREAS AFFECTED...PORTIONS OF CENTRAL AND SOUTHERN NEW YORK INTO
CENTRAL PENNSYLVANIA...WESTERN MARYLAND...EXTREME NORTHEASTERN WEST
VIRGINIA
CONCERNING...SNOW SQUALL
VALID 010426Z - 010830Z
SUMMARY...A SNOW SQUALL SHOULD CONTINUE ACROSS PORTIONS OF THE
NORTHERN APPALACHIANS THROUGH AT LEAST EARLY TONIGHT. BRIEF PERIODS
OF MODERATE TO HEAVY SNOW, 30+ MPH GUSTS, AND RAPIDLY REDUCED
VISIBILITIES ARE ALL POSSIBLE.
DISCUSSION...CONVERGENCE ALONG A SURFACE COLD FRONT HAS INCREASED
OVER THE PAST FEW HOURS AS A 100+ KT 500 MB JET OVERSPREADS THIS
BOUNDARY. AS A RESULT, A SNOW SQUALL HAS DEVELOPED. REDUCED
VISIBILITIES BELOW A QUARTER MILE HAVE BEEN OBSERVED, ALONG WITH
BRIEF INSTANCES OF MODERATE TO HEAVY SNOWFALL RATES AND GUSTS OVER
30 MPH. THE SNOW SQUALL IS EXPECTED TO PERSIST ACROSS PORTIONS OF
THE NORTHERN APPALACHIANS OVER THE NEXT FEW HOURS AS THE PARENT
MID-LEVEL TROUGH CONTINUES TO AMPLIFY OVER THE REGION, FURTHER
INCREASING DEEP-LAYER ASCENT AND THE STRENGTH OF THE LEADING LINE IN
TURN. WITHIN THE STRONGEST PORTION OF THE SNOW SQUALL, A RAPID ONSET
OF 0.5-1.0 INCH/HOUR SNOWFALL RATES COULD OCCUR, WITH A RAPID
VEERING OF THE SURFACE WINDS TO THE NORTHWEST AT 15-25 MPH, WITH
HIGHER GUSTS LIKELY. VISIBILITIES MAY DROP BELOW A QUARTER MILE
WHERE THE STRONGER WINDS AND HIGHER SNOWFALL RATES COINCIDE.
..SQUITIERI.. 01/01/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...ALY...PHI...BGM...CTP...LWX...PBZ...
LAT...LON 39437967 39748016 40148042 40478038 40808035 40897991
41457812 42387641 42967567 43137482 42877442 42447453
41837495 41157567 40527644 40117693 39747754 39427832
39357896 39437967
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