• MESO: Mesoscale Discussion 0656

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Wednesday, May 06, 2026 21:45:36
    ACUS11 KWNS 062145
    SWOMCD
    SPC MCD 062145=20
    SCZ000-GAZ000-NCZ000-TNZ000-ALZ000-062345-

    Mesoscale Discussion 0656
    NWS Storm Prediction Center Norman OK
    0445 PM CDT Wed May 06 2026

    Areas affected...portions of Northeastern Alabama...northern Georgia
    into far southeastern Tennessee and southwestern North Carolina.

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

    Valid 062145Z - 062345Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Increasing storm coverage could support a few organized
    supercells or clusters this afternoon/evening. While buoyancy is
    modest, deep-layer shear remains quite strong along and near the
    front. A risk for damaging gusts and perhaps a tornado or two may
    develop.

    DISCUSSION...As of 2140 UTC, regional radar and visible imagery
    showed convection blossoming along the diffuse frontal zone
    stretching from northern AL into GA and portions of TN/NC. Obstinate
    cloud cover has limited buoyancy along the front northeast of
    Tornado Watch 187. Still, mid 60s F surface dewpoints are allowing
    for ~ 500 J/kg of MLCAPE. As storm coverage increases upstream over
    AL, strong deep-layer flow (60-80 kt) may allow for organization
    into supercells or linear clusters. This could support damaging
    gusts with the strongest storms given the rather strong background
    shear. Low-level shear remains modest, but given the proximity to
    the front, a tornado or two may also be possible, especially with
    any sustained supercells.

    Observational trends and CAM guidance show a messy storm mode with
    numerous storm interactions likely. This, along with the weak
    buoyancy makes the severe potential in this region highly uncertain.
    However, some severe risk could materialize, and a WW is possible.

    ..Lyons/Guyer.. 05/06/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8GXaLtJLSWFExpLAYvCSpQGil8t4VPyVCGdeP3aFvH_7pd76NETxrOtldmk2jkwMTf6vy9Q8-= WSF7fKHQ42WMwaHiVw$ for graphic product...

    ATTN...WFO...GSP...MRX...FFC...BMX...HUN...

    LAT...LON 34908626 34968617 35238447 35248390 35138326 34688317
    34098322 33828358 33808434 33958526 34208616 34258627
    34908626=20

    MOST PROBABLE PEAK TORNADO INTENSITY...85-110 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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    * Origin: Capitol City Online (1:2320/107)