• MESO: Mesoscale Discussion 1665

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Sep 1 03:02:26 2021
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    ACUS11 KWNS 010302
    SWOMCD
    SPC MCD 010301=20
    VAZ000-010430-

    Mesoscale Discussion 1665
    NWS Storm Prediction Center Norman OK
    1001 PM CDT Tue Aug 31 2021

    Areas affected...portions of western VA

    Concerning...Tornado Watch 480...

    Valid 010301Z - 010430Z

    The severe weather threat for Tornado Watch 480 continues.

    SUMMARY...A threat for brief tornadoes continues across Tornado
    Watch 480.

    DISCUSSION...Several cells near Rockbridge to Albemarle counties in western/central VA have intensified over the past hour or so. These
    cells continue to exhibit periods of weak low-level rotation as they
    shift north/northeast. This activity is occurring in the vicinity of
    a surface boundary draped across the region and within a corridor of
    stronger low-level instability (0-3 km MLCAPE around 100-125 m2/s2).
    Low-level shear is somewhat less favorable with northeast extent
    compared to earlier this evening, but still sufficient to support
    rotating cells capable of brief tornadoes.

    ..Leitman.. 09/01/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!vt9HaKl9osQVe1GmQ--Ozxu5ABPN3zLwXdfapxQxZu7P5Be5qhF8XI97RpBsR4jNjlxZ2iDs$=
    for graphic product...

    ATTN...WFO...AKQ...LWX...RNK...

    LAT...LON 37997799 37647840 37437884 37367933 37407970 37617989
    37987986 38277956 38557894 38697835 38587796 38347787
    37997799=20



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