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  • MESO: Mesoscale Discussion 2240

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Nov 22 04:24:38 2024
    ACUS11 KWNS 220424
    SWOMCD
    SPC MCD 220423=20
    NYZ000-PAZ000-220830-

    Mesoscale Discussion 2240
    NWS Storm Prediction Center Norman OK
    1023 PM CST Thu Nov 21 2024

    Areas affected...the Catskills and Poconos vicinity of northeastern Pennsylvania and southeastern New York

    Concerning...Heavy snow=20

    Valid 220423Z - 220830Z

    SUMMARY...Snowfall rates of an inch per hour are expected locally
    across parts of southeastern New York and northeastern Pennsylvania, specifically over the higher terrain in the Catskills and Poconos
    vicinity.

    DISCUSSION...As an upper low centered over southwestern Pennsylvania
    moves slowly east-southeastward, a surface low currently analyzed
    over the eastern Long Island vicinity will continue to retrograde
    northwestward across southern New England and eventually into
    southeastern New York. Strong low-level warm advection north of the
    low is resulting in widespread moderate to heavy precipitation --
    mostly in the form of rain -- across southern New England and into
    eastern New York, northeastern Pennsylvania, and northern New
    Jersey. However, temperatures near or slightly below freezing are
    indicated across the higher terrain areas including the Poconos and
    Catskills, where moderate to locally heavy snow is occurring
    (moderate snow is now being reported at the BGM obs site).

    Given the rather slow movement of the upper system, QG ascent across
    the discussion area should remain strong over the next 3 to 6 hours.
    As such, expect locally heavy snow -- at rates near an inch per
    hour -- to persist through midnight and into early Friday morning.

    ..Goss/Guyer.. 11/22/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7-kQ02B8Ux77PTRlQVHzZ2-5uQh3MRi9pFz5-eQpaMcdB9VcsebF52ZVabp8ZRY3ZzhdRAeBY= xEoh8X3O_i1aApM3Nc$ for graphic product...

    ATTN...WFO...ALY...PHI...BGM...CTP...

    LAT...LON 42677447 42397416 41817439 41547501 41107548 41177575
    41367590 41477650 41887688 42867614 42917505 42677447=20


    =3D =3D =3D
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