• MESO: Mesoscale Discussion 1604

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tue Jul 8 16:58:14 2025
    ACUS11 KWNS 081657
    SWOMCD
    SPC MCD 081657=20
    MAZ000-RIZ000-CTZ000-NYZ000-081900-

    Mesoscale Discussion 1604
    NWS Storm Prediction Center Norman OK
    1157 AM CDT Tue Jul 08 2025

    Areas affected...Portions of New England

    Concerning...Severe potential...Watch unlikely=20

    Valid 081657Z - 081900Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Isolated to scattered thunderstorms will pose a severe
    hail and wind risk across part of New England this afternoon. Storm
    coverage is expected to remain sufficiently limited to preclude
    watch issuance.

    DISCUSSION...GOES IR imagery and MRMS vertically integrated liquid
    show steady intensification of weak thunderstorms across southern NY
    ahead of a diffuse cold front. Further growth of these cells is
    expected over the next several hours as temperatures continue to
    warm and bolster MLCAPE through late afternoon. Upstream VWPs
    recently sampled 20-35 knot mid-level winds associated with a weak
    impulse approaching the New England region. The arrival of this
    perturbation through peak heating will help elongate hodographs and
    promote some increase in storm organization/longevity, and may
    support a weak supercell or two. Consequently, some threat for
    severe hail (most likely near/below 1.25 inch in diameter) may be
    emerging if discrete modes can be maintained. Otherwise, the primary
    hazard will remain strong to severe downburst winds, especially if
    more organized clustering can occur. In general, nebulous forcing
    for ascent will likely limit overall storm coverage and should
    negate the need for a watch, though convective trends will be
    monitored.

    ..Moore/Thompson.. 07/08/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8CUckvOyIvWBG6DZp_L7oUg9X1Bmjui3cN4GHj2oC9I-gzY7w1rwIVhEURFosPxiBJEK738wU= McKXcUskj6cjjRuygk$ for graphic product...

    ATTN...WFO...BOX...OKX...ALY...

    LAT...LON 41267225 41137343 41257386 41427424 42087413 42317369
    42497284 42717078 42437053 42107038 41937038 41737033
    41597040 41527058 41267225=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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