• MESO: Mesoscale Discussion 1140

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Sunday, June 14, 2026 18:44:22
    ACUS11 KWNS 141844
    SWOMCD
    SPC MCD 141843=20
    TNZ000-GAZ000-ALZ000-MSZ000-142015-

    Mesoscale Discussion 1140
    NWS Storm Prediction Center Norman OK
    0143 PM CDT Sun Jun 14 2026

    Areas affected...portions of the mid-Tennessee River Valley

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

    Valid 141843Z - 142015Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Scattered thunderstorms will pose a risk for damaging wind
    gusts this afternoon across portions of the mid-Tennessee River
    Valley

    DISCUSSION...An uptick in convective coverage has been noted across
    portions of the mid-Tennessee River Valley over the past 30-60
    minutes with a broken broken band of developing thunderstorms noted
    per regional radar imagery. This activity is occurring along a
    remnant outflow boundary from overnight convection immediately
    downstream of a subtle mid-level MCV. Modestly enhanced mid-level
    westerly flow (30+ kts sampled above 1.5-2 km AGL by the HTX VWP and
    40+ kts sampled by OHX) is contributing to 20-30 kts of effective
    shear. Coupled with a moderately unstable environment in place ahead
    of these storms, some potential exists for a marginally more
    organized multicell cluster/band to evolve eastward this afternoon,
    with an attendant risk for damaging wind gusts. Watch issuance
    remains uncertain at this time, but a targeted Severe Thunderstorm
    Watch may be considered should a corridor of greater severe
    potential become evident.

    ..Chalmers/Mosier.. 06/14/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5uhDRybWn-bx_EBw6Jhhe71qzTL0Ron2lhdWD23oPfo_eL4he9OSU7AWNdQ7VzQmHRDxF2Qm8= r6ZsVnV01iZNpY6PnY$ for graphic product...

    ATTN...WFO...MRX...FFC...OHX...BMX...HUN...MEG...

    LAT...LON 34168659 34228728 34288776 34378807 34538834 34688840
    35008828 35218813 35648770 36028720 36168693 36258657
    36188580 36118535 35988519 35758506 35398500 35128505
    34738526 34448552 34228600 34168659=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH


    =3D =3D =3D
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    * Origin: Capitol City Online (1:2320/107)