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  • MESO: Mesoscale Discussion 0078

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Feb 8 23:24:42 2025
    ACUS11 KWNS 082324
    SWOMCD
    SPC MCD 082324=20
    NYZ000-CTZ000-NJZ000-PAZ000-DEZ000-MDZ000-090330-

    Mesoscale Discussion 0078
    NWS Storm Prediction Center Norman OK
    0524 PM CST Sat Feb 08 2025

    Areas affected...far northern portions of the Mid-Atlantic and far
    southern portions of New England

    Concerning...Winter mixed precipitation=20

    Valid 082324Z - 090330Z

    SUMMARY...Snow should overspread the region in the next few hours.
    With time, the snow should transition to sleet and even freezing
    rain before ending later this evening/overnight.

    DISCUSSION...An area of mixed winter precipitation continues across
    western and central Pennsylvania this evening. This precipitation
    area developed/is being maintained on the nose of strong low-level
    warm-air advection across a deep layer. Over the next few hours this
    warm-air advection and associated isentropic ascent will overspread
    eastern Pennsylvania and much of New Jersey. Surface temperatures in
    the upper-20Fs and low-30Fs, coupled with dewpoint temperatures in
    the upper-teens and low-20Fs, yield wet-bulb temperatures below 32F.
    Thermal profiles across the region will initially support all snow.
    However, as the warm-air advection warms the low-levels, the maximum temperature in the column should increase above 32F yielding sleet
    and potentially eventually freezing rain before precipitation ends
    from southwest to northeast.

    ..Marsh.. 02/08/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9vNBJ74_14ovHOJKNBlCLn0PKPhgT_DKo-7H-8W8jqK1e9-Kbpk6LDlicKGzfFcABuBFjCbvm= GRftCqYKC47lGyvq-c$ for graphic product...

    ATTN...WFO...OKX...PHI...BGM...CTP...LWX...

    LAT...LON 39177553 39527647 40417671 41247631 41547565 41477463
    41017363 39987304 39137378 38907485 39177553=20


    =3D =3D =3D
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