• MESO: Mesoscale Discussion 1467

    From COD Weather Processor@1:2320/127 to wx-storm@lists.illinois.edu on Fri Jul 3 16:55:43 2026
    ACUS11 KWNS 031655
    SWOMCD
    SPC MCD 031654=20
    NCZ000-SCZ000-GAZ000-TNZ000-KYZ000-ALZ000-031900-

    Mesoscale Discussion 1467
    NWS Storm Prediction Center Norman OK
    1154 AM CDT Fri Jul 03 2026

    Areas affected...Portions of Northern Alabama and Georgia into
    central and eastern Tennessee

    Concerning...Severe potential...Watch unlikely=20

    Valid 031654Z - 031900Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Scattered thunderstorms -- some of which may be marginally
    severe -- are expected to develop and increase in coverage across
    much of the Southeast this afternoon. The strongest storms will be
    capable of damaging wind gusts of 60 MPH.

    DISCUSSION...Surface temperatures across much of the Southeast have
    reached the low 90s F, and as heating begins to reach convective
    temperature, thunderstorms are expected to increase in coverage and
    intensity. Being beneath an upper-level ridge, there is little in
    the way of vertical shear to support storm organization. However,
    loose clusters of multicellular thunderstorms will develop in
    well-mixed boundary layers with steep lapse rates, modest
    precipitable water content, and relatively high LCLs. This should
    support strong, wet downdrafts, with SPC Mesoanalysis indicating
    downdraft CAPE exceeding 1000 J/kg across much of the area. Along
    with the potential for wet microbursts, the scattered storm coverage
    can also result in loose organization along interacting outflow
    boundaries. Both scenarios could result in 60 MPH wind gusts and
    some wind damage. However, the overall pulse-convection nature and
    lack of clear organization mechanisms limits the confidence in
    severe coverage. While a severe thunderstorm watch is not
    anticipated at this time, conditions will continue to be monitored
    as convective coverage increases.

    ..Halbert/Hart.. 07/03/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_j8RCivKkbVaB7DT8Kw-WFgBFgs3hF5ypFreKkQ_txUNf8kVdLTeL4qKkGyheVrLppTpFjVCm= bNHFzxQdJln9K1gEl0$ for graphic product...

    ATTN...WFO...GSP...MRX...FFC...LMK...OHX...BMX...HUN...PAH...

    LAT...LON 33848341 33298383 33208391 33178429 33118492 33088525
    33108544 33238577 33398609 33588645 33898686 34298717
    34808729 35268729 36258727 36728714 37148696 37208672
    37098600 36958556 36688515 36278476 36018457 35878438
    35708404 35688386 35638330 35678268 35598240 35378223
    35118217 34858235 34628278 33848341=20

    MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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    * Origin: Capitol City Weather Station (1:2320/127)