• MESO: Mesoscale Discussion 1509

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, September 27, 2018 23:35:21
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    ACUS11 KWNS 272335
    SWOMCD
    SPC MCD 272334
    NCZ000-SCZ000-280030-

    Mesoscale Discussion 1509
    NWS Storm Prediction Center Norman OK
    0634 PM CDT Thu Sep 27 2018

    Areas affected...Northwest South Carolina and southwest North
    Carolina

    Concerning...Severe Thunderstorm Watch 391...

    Valid 272334Z - 280030Z

    The severe weather threat for Severe Thunderstorm Watch 391
    continues.

    SUMMARY...The severe thunderstorm watch will need to be locally
    extended as a bowing line of storms continues to move northeast.

    DISCUSSION...A line of thunderstorms continues to move northeast at
    40 to 45 knots and is approaching the Greenville-Spartanburg metro
    area. This line has a history of producing wind damage across
    northeast Georgia and into western South Carolina. This line has
    developed a significant area of trailing stratiform precipitation
    and has recently started to develop a commahead. This would suggest
    these storms may continue to remain organized and pose a severe
    threat for another hour or two as the line moves into an unstable
    upstream airmass. Additionally, several storms have developed ahead
    of this line of storms indicating ascent from the upper-level
    forcing may also be assisting the longevity of this line. The
    corridor of the highest severe threat will likely follow the line of
    storms which has developed toward the north-northeast ahead of this
    line. A local extension of this watch will likely be needed to cover
    this threat.

    ..Bentley/Hart.. 09/27/2018

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

    ATTN...WFO...CAE...GSP...

    LAT...LON 34798272 35258238 35538217 35678177 35598144 35388114
    35238093 35058099 34698117 34088176 33898212 34798272



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