• MESO: Mesoscale Discussion 0108

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Feb 20 21:42:23 2026
    ACUS11 KWNS 202142
    SWOMCD
    SPC MCD 202142=20
    MEZ000-NHZ000-VTZ000-NYZ000-210215-

    Mesoscale Discussion 0108
    NWS Storm Prediction Center Norman OK
    0342 PM CST Fri Feb 20 2026

    Areas affected...Northeast NY into VT/NH/southern ME

    Concerning...Heavy snow=20

    Valid 202142Z - 210215Z

    SUMMARY...Occasional moderate to locally heavy snow rates are
    possible into this evening.

    DISCUSSION...Sporadic moderate to locally heavy snow is ongoing late
    this afternoon from parts of northeast NY into VT/NH. Favorable deep
    ascent downstream of a midlevel cyclone over lower MI will allow the
    extensive precipitation shield to spread northeastward into this
    evening across parts of northern NY and New England. In addition, an
    embedded shortwave trough that is currently producing shallow
    convection across western NY may help to enhance precipitation rates
    for a time this evening.=20

    Low-level temperatures remain relatively warm across parts of New
    England, but continued ascent and evaporative cooling should help to
    maintain snow as the primary precipitation type from northern NY
    into much of VT/NH. Substantial cooling aloft is also expected from
    west to east this evening, which could lead to an increase in
    snow-to-liquid ratios prior to cessation of the heavier
    precipitation rates. Farther east, gradually backing surface winds
    in response to a deepening cyclone off of the southern New England
    coast will eventually lead to low-level cold advection across areas
    of southern ME that are currently above freezing.=20

    Occasional moderate to locally heavy snow rates are expected to
    continue and expand into a larger portion of northern NY into VT/NH
    and southern ME this evening, before an anticipated weakening trend
    near/after 03Z as the stronger ascent begins to wane and shift
    offshore.

    ..Dean.. 02/20/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5D8MHVurcffesl-4VTODDO4itEFDrp27K20gUMnns2zSKG_GJG_D8E38_SB7VRa9Sx9ZJcpOi= h3bFdHW1IoF3JCdiDI$ for graphic product...

    ATTN...WFO...GYX...BTV...ALY...

    LAT...LON 43547302 43717453 44137493 44597502 45007488 44967303
    44817150 44246991 43627003 43307033 43257071 43387163
    43547302=20


    =3D =3D =3D
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