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  • MESO: Mesoscale Discussion 0057

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Jan 29 16:40:22 2025
    ACUS11 KWNS 291640
    SWOMCD
    SPC MCD 291639=20
    MEZ000-MAZ000-NHZ000-VTZ000-CTZ000-NYZ000-PAZ000-291845-

    Mesoscale Discussion 0057
    NWS Storm Prediction Center Norman OK
    1039 AM CST Wed Jan 29 2025

    Areas affected...portions of extreme northeast Pennsylvania...far
    eastern New York...Massachusetts...Vermont...New Hampshire

    Concerning...Snow Squall=20

    Valid 291639Z - 291845Z

    SUMMARY...Occasional snow-squall conditions are possible in stronger
    portions of a snow band over the next few hours. A rapid onset of
    moderate snow, gusty winds, and reduced visibility may all occur.

    DISCUSSION...A low-topped, progressive convective snow band has
    recently materialized, with a 10 F surface temperature drop,
    moderate snowfall rates, and half-mile visibility reductions noted
    on surface observations over the past couple of hours. This band is
    being driven by a progressive cold front and rapidly ejecting
    mid-level trough, which is also preceded by at least partially
    clearing skies. 16Z mesoanalysis shows up to 8 C/km low-level lapse
    rates downstream of the snow band, suggesting that snow squall
    potential may increase this afternoon in stronger convective cells.
    Bouts of at least moderate snowfall rates, as well as a 10 F
    temperature drop, 25+ kt gusts, and visibility reduced to a quarter
    mile, may occur with this band until it moves offshore.

    ..Squitieri.. 01/29/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_v8W7kyyDaOyngYcKKlUIWZHCwx95NsB34NJ50q-z2PhLGm69SiGohoB6bYX_WFtCZJEEd_hW= GmK1CPjpYNZL-jRVH0$ for graphic product...

    ATTN...WFO...GYX...BOX...BTV...ALY...BGM...

    LAT...LON 41657666 42767392 44517271 45077227 45297141 45007096
    44297103 43157069 42667073 42357092 42067231 41747391
    41617466 41617538 41657666=20


    =3D =3D =3D
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