• MESO: Mesoscale Discussion 0817

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Friday, June 22, 2018 01:30:48
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    ACUS11 KWNS 220130
    SWOMCD
    SPC MCD 220130
    TNZ000-ALZ000-MSZ000-ARZ000-220330-

    Mesoscale Discussion 0817
    NWS Storm Prediction Center Norman OK
    0830 PM CDT Thu Jun 21 2018

    Areas affected...Southern/central Tennessee...portions of northern
    Mississippi and Alabama

    Concerning...Severe Thunderstorm Watch 196...

    Valid 220130Z - 220330Z

    The severe weather threat for Severe Thunderstorm Watch 196
    continues.

    SUMMARY...WW 196 is set to expire at 02Z and no downstream watch is
    expected. Storms may pose an isolated hail and strong to severe wind
    gust threat after WW expiration.

    DISCUSSION...Over the past hour, storms have formed atop the outflow
    of previous convection in northern Alabama and Mississippi. A few of
    these storms have shown signs of weak/modest mid-level rotation per
    WSR-88D imagery. Any of these stronger storms -- given effective
    deep-layer shear of 30-40 kts -- will be capable of a strong to
    severe wind gust and marginally severe hail, however spatial
    coverage of these threats will be limited. Given the isolated nature
    of the threats, an additional WW is not likely.

    ..Wendt.. 06/22/2018

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

    ATTN...WFO...OHX...HUN...MEG...

    LAT...LON 35738834 35708730 35268626 34928635 34518713 34408809
    34268889 34329032 34839083 35329076 35649028 35738834



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