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  • MESO: Mesoscale Discussion 1111

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, July 21, 2018 02:53:20
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 210253
    SWOMCD
    SPC MCD 210252
    VAZ000-NCZ000-TNZ000-KYZ000-GAZ000-210345-

    Mesoscale Discussion 1111
    NWS Storm Prediction Center Norman OK
    0952 PM CDT Fri Jul 20 2018

    Areas affected...Eastern Tennessee...southeastern Kentucky...far
    western North Carolina.

    Concerning...Tornado Watch 294...295...

    Valid 210252Z - 210345Z

    The severe weather threat for Tornado Watch 294, 295 continues.

    SUMMARY...The tornado threat continues across southwestern portions
    of watch 295. Elsewhere within watch 295, the threat has
    transitioned to more of a wind concern.

    DISCUSSION...A line of storms have produced some wind damage in
    eastern Tennessee over the past several hours. This wind damage
    threat will continue to move southward through eastern Tennessee
    over the next few hours. East of the Tennessee border, limited
    instability should lead to storms weakening.

    On the western flank of this line of storms, a cluster of supercells
    continues to form as moist, unstable air is advected into the
    upshear portion of the cold pool. This western portion of the line
    of storms will continue to pose the greatest tornado risk into the
    overnight period. This is where MLCAPE remains in excess of 2000
    J/kg and the storm mode will remain mostly discreet with 0 to 1 km
    SRH in excess of 150 m2/s2 measured by the KHTX VWP.

    ..Bentley.. 07/21/2018

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

    ATTN...WFO...RNK...GSP...MRX...JKL...FFC...LMK...OHX...

    LAT...LON 36808529 36928432 36928300 36928239 36858175 36548172
    36178199 35888260 35658326 35188395 34958420 34988484
    35048544 35308565 35898572 36648559 36808529



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