• MESO: Mesoscale Discussion 0209

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Mar 15 19:48:41 2025
    ACUS11 KWNS 151948
    SWOMCD
    SPC MCD 151948=20
    OHZ000-MIZ000-INZ000-ILZ000-152115-

    Mesoscale Discussion 0209
    NWS Storm Prediction Center Norman OK
    0248 PM CDT Sat Mar 15 2025

    Areas affected...portions of central and northern Indiana into far
    southeast Lower Michigan and western Ohio

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

    Valid 151948Z - 152115Z

    Probability of Watch Issuance...20 percent

    SUMMARY...An instance or two of marginally severe hail/wind or a
    brief tornado are possible into early evening.The severe threat
    should be sparse at best and a WW issuance is not expected.

    DISCUSSION...Thunderstorms have been gradually increasing in
    coverage and intensity within a low-level moisture axis preceding
    the approach of a mid-level trough. Vertical strengthening and
    veering of flow with height supports 40 kts of effective bulk shear.
    KIWX radar shows that some of the more recent, stronger storm
    structures have exhibited multicellular to transient supercellular characteristics. However, these storms are progressing in a
    marginally unstable environment, characterized by 500 J/kg MLCAPE.
    As such, one of the stronger storms could produce an instance of
    marginally severe hail/wind/a brief tornado. However, the severe
    threat should remain isolated, and a WW issuance is not currently
    anticipated.

    ..Squitieri/Gleason.. 03/15/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7dCrNGPBkmbsSlhf9FXaICl1HFAf49FP6pe6C4EzBUCzpRHdkcUqCopzVjlizAZc-TcKsqiFj= eXJLr7PKLva0fCr7Ug$ for graphic product...

    ATTN...WFO...CLE...ILN...DTX...IWX...GRR...IND...ILX...

    LAT...LON 39438766 41008646 42358526 42818360 42638322 42248321
    41808337 41068290 40438305 39708345 39438427 39548566
    39438766=20


    =3D =3D =3D
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