• MESO: Mesoscale Discussion 0520

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tue May 4 09:18:05 2021
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    ACUS11 KWNS 040918
    SPC MCD 040917=20

    Mesoscale Discussion 0520
    NWS Storm Prediction Center Norman OK
    0417 AM CDT Tue May 04 2021

    Areas affected...western portions of Kentucky and Tennessee

    Concerning...Severe Thunderstorm Watch 140...

    Valid 040917Z - 041045Z

    The severe weather threat for Severe Thunderstorm Watch 140

    SUMMARY...Rick for primarily damaging winds continues locally across
    WW 140. New WW may be needed east of the current watch, as storms

    DISCUSSION...Latest radar loop shows a bowing band of storms moving
    across far western portions of Kentucky and Tennessee at this time.=20
    The strongest storms occurring in the vicinity of the
    Kentucky/Tennessee border, where outflow continues to surge eastward
    just to the south of a mesolow currently located between Cape
    Girardeau and Paducah. Strong/locally damaging wind gusts remain
    possible ahead of this portion of the line.

    Meanwhile, some weakening of convection has occurred farther south
    along the band, into southwestern Tennessee. Here, updrafts are
    largely occurring just west of outflow at the leading edge of the
    cold pool, in a slightly elevated manner.=20=20

    Overall however, with the 06Z KBNA RAOB observing very steep lapse
    rates aloft, above a shallow/stable boundary layer, continuation of
    at least locally vigorous convection -- and associated potential for strong/damaging gusts -- is expected over the next couple of hours
    as storms advance eastward. A new WW may be needed as storms near
    the eastern fringe of WW 140.

    ..Goss.. 05/04/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!oVSssJgMYzWGRIHavGOOz4Oo1528KpLu2Rv3Qy6JZHm4gq83C8WtAFekgKuwgvopEQSblfE7$=
    for graphic product...


    LAT...LON 34979074 35648967 36498866 36938900 37318913 37718636
    37218492 35078593 35038903 34979074=20

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