• MESO: Mesoscale Discussion 0071

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Feb 6 22:10:58 2025
    ACUS11 KWNS 062210
    SWOMCD
    SPC MCD 062210=20
    VAZ000-NCZ000-WVZ000-TNZ000-KYZ000-070015-

    Mesoscale Discussion 0071
    NWS Storm Prediction Center Norman OK
    0410 PM CST Thu Feb 06 2025

    Areas affected...Parts of middle/eastern TN...southern KY...far
    southwest VA...far western NC

    Concerning...Severe potential...Watch possible=20

    Valid 062210Z - 070015Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Some increase in storm coverage will be possible into the
    early evening, including the potential for a couple of supercells
    with a threat of hail, damaging gusts, and possibly a tornado or
    two.

    DISCUSSION...Relatively strong diurnal heating occurred this
    afternoon from northeast TN into southeast KY, with greater
    cloudiness and weaker heating noted across the rest of TN.
    Seasonably rich low-level moisture is supporting MLCAPE of around
    500-1000 J/kg near and south of a surface front extending from
    southeast KY into northwest TN, and area VWPs continue to depict
    strong deep-layer flow/shear that is conditionally favorable for
    organized convection.=20

    Thus far this afternoon, robust convection has mostly been confined
    to areas north of the boundary, aided by modest low-level warm
    advection, though a couple stronger cells have recently developed
    across far southeast KY, while another cell is gradually becoming
    better organized east of Clarksville, TN. Coverage of storms into
    the early evening remains uncertain, with stronger frontal
    convergence expected across western TN (where cloudiness has
    persisted), and more nebulous large-scale ascent expected in the
    short-term across southeast KY and eastern TN, where stronger
    heating occurred. However, with time, a couple of supercells and/or
    stronger clusters could develop and spread eastward into the early
    evening. Should this occur, a threat for locally damaging wind and
    hail could evolve with time. Also, while low-level flow is rather
    modest and veered across the warm sector, low-level shear/SRH is
    sufficient to support some tornado threat, especially if any
    right-moving supercells can be sustained into the early evening.=20

    While coverage and magnitude of the threat remain somewhat
    uncertain, watch issuance remains possible if an increase in
    organized convection appears imminent.

    ..Dean/Hart.. 02/06/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8C-VfqolvINcJJdMbLdC1g0B70u4Wln3oPVNM5rK8WsjaVbPVxYMtelu51iXKJRaX8gZc2r3u= BvUbnw_Mc9PHx3GKh8$ for graphic product...

    ATTN...WFO...RNK...RLX...GSP...MRX...JKL...LMK...OHX...PAH...
    MEG...

    LAT...LON 36578730 36838639 37058540 37288382 37378194 37108145
    36528154 35888225 35518307 35448376 35458472 35618597
    35698676 35818739 35898781 36198798 36578730=20


    =3D =3D =3D
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