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  • MESO: Mesoscale Discussion 1085

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Thu Jun 11 11:34:06 2026
    ACUS11 KWNS 111134
    SWOMCD
    SPC MCD 111133=20
    IAZ000-MOZ000-111300-

    Mesoscale Discussion 1085
    NWS Storm Prediction Center Norman OK
    0633 AM CDT Thu Jun 11 2026

    Areas affected...Southern Iowa and far northern Missouri

    Concerning...Severe Thunderstorm Watch 310...

    Valid 111133Z - 111300Z

    The severe weather threat for Severe Thunderstorm Watch 310
    continues.

    SUMMARY...The threat for 60-80 mph winds will continue in southern
    Iowa. Brief tornadoes associated with the MCS will also be a
    concern. With discrete development ahead of the MCS possible, trends
    will need to be monitored for a potentially greater tornado threat.

    DISCUSSION...A compact MCS with a history of 60-80 mph winds and a
    couple of brief tornadoes continues east within southern Iowa. Ahead
    of this MCS, weak thunderstorm development has been noted in
    south-central Iowa. The primary concern this morning will continue
    to be severe/damaging winds as the downstream environment begins to
    further destabilize. A secondary concern that needs to be monitored
    is the potential for stronger discrete development ahead of the MCS
    near the surface boundary. The low-level jet core is expected to
    move into more of central/eastern Iowa this morning. This could lead
    to a greater tornado risk if discrete storms can form/mature.

    ..Wendt.. 06/11/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9aPM5lItccy4S57hSYT9x7xGFyT5yIg9aPUckvlMypZ1KV45hNyAvC1D-_KQpLTiLcxwevp8t= BUZ8mkKuFa1vTfr4cw$ for graphic product...

    ATTN...WFO...DVN...DMX...EAX...OAX...

    LAT...LON 40609549 41399531 41429306 41359184 41039154 40799159
    40459197 40329344 40329369 40479512 40609549=20

    MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH
    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


    =3D =3D =3D
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