• MESO: Mesoscale Discussion 1747

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Jul 28 11:00:15 2023
    ACUS11 KWNS 281100
    SWOMCD
    SPC MCD 281059=20
    MIZ000-OHZ000-INZ000-ILZ000-281300-

    Mesoscale Discussion 1747
    NWS Storm Prediction Center Norman OK
    0559 AM CDT Fri Jul 28 2023

    Areas affected...Northern Indiana...Far Southwest Lower
    Michigan...Northwest Ohio

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

    Valid 281059Z - 281300Z

    Probability of Watch Issuance...20 percent

    SUMMARY...An isolated wind-damage threat will likely continue for a
    couple more hours across northern Indiana, and may affect northwest
    Ohio later this morning. Weather watch issuance appears conditional.

    DISCUSSION...The latest high-resolution radar imagery from Fort
    Wayne, Indiana shows a line segment in far northwest Indiana
    extending into southwest Lower Michigan. Another small but strong
    cluster of storms is ongoing in western Indiana. These two areas of
    storms are located on the northern edge of a pocket of moderate
    instability, where the RAP is estimating MUCAPE in the 2000 to 3000
    J/kg range. The storms are expected to move east-southeastward along
    a gradient of instability into northeast Indiana and northwest Ohio
    over the next couple of hours. RAP forecast soundings in this area
    have effective shear near 30 knots, and CAPE with large lifted
    indices. This environment should support a continued wind-damage
    threat with the stronger multicell line segments. Weather watch
    issuance will be considered if it appears that a substantial cold
    pool or more solid MCS is starting to organize.

    ..Broyles/Edwards.. 07/28/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4DMBht7EBZBnx5BUSUP9NRfjRvyGTuVRm8Gk6JI-xFuKwPv-4_IQCI1ll5kkuH634PZ5Axc4E= -gMaW8KVa6Cilu-rWU$ for graphic product...

    ATTN...WFO...ILN...DTX...IWX...GRR...IND...LOT...

    LAT...LON 40308417 39958497 39978584 40158690 40298732 40718769
    41258753 41798706 42098639 42008491 41468391 40308417=20


    =3D =3D =3D
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