• MESO: Mesoscale Discussion 2197

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Nov 7 20:11:17 2025
    ACUS11 KWNS 072011
    SWOMCD
    SPC MCD 072010=20
    KYZ000-TNZ000-ALZ000-MSZ000-072215-

    Mesoscale Discussion 2197
    NWS Storm Prediction Center Norman OK
    0210 PM CST Fri Nov 07 2025

    Areas affected...Parts of Middle TN...south-central KY...far
    northern AL

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

    Valid 072010Z - 072215Z

    Probability of Watch Issuance...60 percent

    SUMMARY...The severe-storm threat is expected to increase later this
    afternoon into the evening. Damaging wind, isolated hail, and a
    couple tornadoes may occur. Watch issuance is possible.

    DISCUSSION...An area of precipitation with embedded weak
    thunderstorms is ongoing early this afternoon from central/eastern
    KY into northwest TN. Buoyancy along/ahead of the ongoing convection
    is currently weak. However, modest diurnal heating, continued
    moistening from the southwest, and eventual cooling aloft associated
    with an approaching mid/upper-level trough will support MLCAPE of
    near/above 1000 J/kg by late afternoon, especially from
    western/middle TN into south-central KY.=20

    Deep-layer shear (as sampled from regional VWPs) is already
    favorable for storm organization, and should generally strengthen
    with time (with effective shear of near/above 50 kt) through early
    evening. Some intensification of ongoing storms will be possible
    later this afternoon, especially along the southwest flank of
    ongoing activity. Additional storm development may occur into parts
    of southwest and southern middle TN, in advance of an approaching
    cold front.=20

    Updraft intensification/organization may be gradual due to the
    modest instability, but eventual development of supercells and/or
    small bowing segments will be possible. Moderate low-level
    flow/shear (with 0-1 km SRH generally in the 100-200 m2/s2 range)
    will support some tornado potential with any sustained supercells,
    with at least localized instances of damaging wind and hail also
    possible. Watch issuance is possible later this afternoon.

    ..Dean/Smith.. 11/07/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!78GNDg96pbw0ujUw-D1O_vhfen921tflLTpsGZWzw1NcrsPDi9LrWCDzOq_-aUFdAvBqB8ACi= vq869bspykdidvkRUY$ for graphic product...

    ATTN...WFO...MRX...JKL...LMK...OHX...HUN...MEG...

    LAT...LON 36038821 37008631 37478538 37758475 37318434 36698441
    34868581 34728784 35008824 36038821=20

    MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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