• MESO: Mesoscale Discussion 1657

    From COD Weather Processor @1:2320/107 to All on Sat Jul 18 23:46:50 2026
    ACUS11 KWNS 182346
    SWOMCD
    SPC MCD 182346
    NYZ000-CTZ000-NJZ000-190045-

    Mesoscale Discussion 1657
    NWS Storm Prediction Center Norman OK
    0646 PM CDT Sat Jul 18 2026

    Areas affected...Parts of southeast NY...Long Island...and far
    southwest CT

    Concerning...Severe potential...Watch unlikely

    Valid 182346Z - 190045Z

    Probability of Watch Issuance...20 percent

    SUMMARY...An eastward-moving band of thunderstorms will pose a
    localized risk of strong to damaging wind gusts for the next hour or
    so.

    DISCUSSION...A loosely organized band or thunderstorms is tracking
    eastward into Long Island. The KOKX VWP is sampling around 45 kt of line-orthogonal 0-6 km shear, which may continue to support an
    organized cold pool as it continues eastward, despite marginal
    buoyancy. Given the established cold pool, 30-40 kt of flow in the
    lowest 2 km, and at least neutral static stability in the boundary
    layer, strong to locally damaging wind gusts will be possible over
    the next hour or so. The overall severe risk is expected to remain
    too localized/marginal for a watch.

    ..Weinman/Hart.. 07/18/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!-jj6BSpFWRV4Ve8KGBxjRZIWLfdm9_MDVkHnJTogFv9NVYuZ2k5bY20tKpta23YxeyaJyt591Bo9FcM1U4m_HMQ5xP4$ for graphic product...

    ATTN...WFO...OKX...

    LAT...LON 40417330 40467371 40667399 40947421 41187410 41327367
    41217298 40977259 40607272 40417330

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


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    --- scorpsmtpd
    * Origin: capitolcityonline.net * KY, USA (1:2320/107)