• MESO: Mesoscale Discussion 0697

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sunday, June 10, 2018 19:43:02
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    ACUS11 KWNS 101942
    SWOMCD
    SPC MCD 101942
    INZ000-ILZ000-102115-

    Mesoscale Discussion 0697
    NWS Storm Prediction Center Norman OK
    0242 PM CDT Sun Jun 10 2018

    Areas affected...East-Central IL...West-Central IN

    Concerning...Severe Thunderstorm Watch 168...

    Valid 101942Z - 102115Z

    The severe weather threat for Severe Thunderstorm Watch 168
    continues.

    SUMMARY...Threat for damaging wind gusts and perhaps a tornado or
    two continues across east-central IL. Downstream threat across
    west-central IN will likely merit the issuance of another watch
    soon.

    DISCUSSION...MCS moving across central IL has recently exhibited an
    increase in forward motion, likely as a result of increased forward
    propagation into the warm, moist, and inhibition-free airmass
    downstream. New storm development as also occurred ahead of the
    line, increasing the probability for continued forward propagation.
    Current storm motion is estimated as 310 degrees at 35 kt. Northern
    portion of the line appears to be moving a little faster (i.e.
    closer to 40 kt). This southeastward progression will likely take
    the northern portion of the line to the edge of Severe Thunderstorm
    Watch 168 by 20Z. Downstream airmass across west-central/southern IN
    remains favorable for continued MCS progression and downstream watch
    will likely be needed soon.

    One other item of note is the increased southeasterly winds in place immediately along the warm front draped from near CMI southward into
    far southwest IN. Resulting localized enhancement of the low-level
    shear may contribute to brief tornado potential.

    ..Mosier/Grams.. 06/10/2018

    ...Please see www.spc.noaa.gov for graphic product...

    ATTN...WFO...IND...LOT...ILX...LSX...

    LAT...LON 40108999 40648848 40668734 40258643 39168623 38728650
    38608719 38628771 38758858 39118956 40108999



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