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  • MESO: Mesoscale Discussion 0194

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Tue Mar 10 23:27:35 2026
    ACUS11 KWNS 102327
    SWOMCD
    SPC MCD 102327=20
    OHZ000-INZ000-MIZ000-ILZ000-110030-

    Mesoscale Discussion 0194
    NWS Storm Prediction Center Norman OK
    0627 PM CDT Tue Mar 10 2026

    Areas affected...Portions of far northeastern Illinois into NORTHERN
    Indiana

    Concerning...Tornado Watch 32...

    Valid 102327Z - 110030Z

    The severe weather threat for Tornado Watch 32 continues.

    SUMMARY...An intense supercell over eastern Kankakee county IL is
    likely to persist along the warm front with a risk for very large
    hail and strong tornadoes this evening. A downstream tornado watch
    will also need to be issued into northern IN.

    DISCUSSION...An intense supercell over portions of eastern Kankakee
    county IL has shown signs of rapid organization over the last 30
    minutes. Several recent reports of very large have been noted along
    with an intensifying low-level mesocyclone from radar imagery. The
    environment along the warm front from eastern IL into northern IN
    remains very favorable for intense supercells with moderate
    instability and ESRH 300-400 m2/s2. This is yielding effective STP
    values of 4-5.

    Given the isolated nature of the supercell, strongly backed
    low-level flow/shear, tornadoes (strong to intense) along with very
    large hail appear likely over the next hour or two. This should
    continue into northern IN, with the potential for additional storms
    to develop over the next couple of hours. Given the proximity to the
    eastern edge of Tornado Watch 32, a downstream watch over portions
    of IN will likely be needed in the next couple of hours.

    ..Lyons.. 03/10/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_fQREuw0EDZ2eYU7ji2QOEyJc8-nF-KNoDaNI_38n1R84PGlGC1ZpnDHwYMQnGSXuYZnLaF31= sVv2t7HEz_D_CmcSpE$ for graphic product...

    ATTN...WFO...IWX...LOT...

    LAT...LON 41258809 41548758 41588713 41778608 41708541 41648481
    41428470 41068467 40848468 40768538 40718602 40748645
    40798688 40948802 41258809=20

    MOST PROBABLE PEAK TORNADO INTENSITY...140-170 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN


    =3D =3D =3D
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