• MESO: Mesoscale Discussion 1512

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Jul 13 02:47:24 2023
    ACUS11 KWNS 130247
    SWOMCD
    SPC MCD 130246=20
    MIZ000-OHZ000-INZ000-130345-

    Mesoscale Discussion 1512
    NWS Storm Prediction Center Norman OK
    0946 PM CDT Wed Jul 12 2023

    Areas affected...Southern Michigan...Northern Indiana...Northern
    Ohio

    Concerning...Tornado Watch 478...

    Valid 130246Z - 130345Z

    The severe weather threat for Tornado Watch 478 continues.

    SUMMARY...Tornado threat continues within WW478.

    DISCUSSION...A line of thunderstorms continues to move eastward
    across southern Michigan and northern Indiana. The low-level jet
    continues to shift eastward with time as does the corridor of
    greatest tornado threat. Surface observations indicate generally
    backed surface winds along and south of I-95 across southern
    Michigan and northern Indiana/Ohio. A funnel cloud was reported
    earlier near Van Buren, MI. The rotation with that storm has since
    weakened. Loss of daytime heating has led to some reduction of
    MLCAPE, though a small corridor of 500-1000 J/kg is noted ahead of
    the line across the MI/IN/OH border. Storms along the south end of
    the ongoing line within the LLJ and resulting storm relative
    helicity of 200-300 m2/s2 will continue to be within the most likely
    corridor for a short term tornado threat.

    ..Thornton/Guyer.. 07/13/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_Zty4M3p2pT62gKYxbHGRDTv2gge82gRDLEaro5RpaB-01fZD3ayMLSUn-wb2Kn_Dgb3eOT45= YpuIvVSFC3LoTJJ1gI$ for graphic product...

    ATTN...WFO...CLE...DTX...IWX...GRR...

    LAT...LON 41598459 41578482 41568506 41518527 41528571 41578589
    41618602 41638604 41768609 41928602 42028595 42148587
    42368570 42428566 42508561 42638548 42838533 42848506
    42818458 42808438 42778404 42758363 42668337 42598321
    42498302 42368297 42168297 42058299 41918301 41878306
    41758318 41698329 41588367 41578391 41598459=20


    =3D =3D =3D
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