• MESO: Mesoscale Discussion 1432

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Jun 25 15:45:34 2025
    ACUS11 KWNS 251544
    SWOMCD
    SPC MCD 251543=20
    NCZ000-SCZ000-TNZ000-GAZ000-251745-

    Mesoscale Discussion 1432
    NWS Storm Prediction Center Norman OK
    1043 AM CDT Wed Jun 25 2025

    Areas affected...Parts of western NC/upstate SC into far northwest
    GA and extreme eastern TN

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

    Valid 251543Z - 251745Z

    Probability of Watch Issuance...60 percent

    SUMMARY...Damaging downburst/outflow winds and isolated hail are
    possible into this afternoon.

    DISCUSSION...Morning soundings depict a rather volatile
    thermodynamic environment across parts of the Southeast this
    morning. A remnant EML and seasonably cold midlevel temperatures
    atop 70s F dewpoints are already supporting MLCAPE of 3000-4000
    J/kg. Temperatures will warm through the 90s F this afternoon,
    resulting in very steep low-level lapse rates.=20

    Low-level flow will generally remain weak, but modest northeasterly
    midlevel flow between a weakening upper ridge and an upper low near
    south FL could support weakly organized storms. However, even
    relatively disorganized storms in this regime will be capable of
    producing damaging/potentially severe downbursts and isolated hail,
    given the very favorable thermodynamic environment.=20

    Storm coverage remains somewhat uncertain into mid afternoon. The
    highest confidence is short-term development is across the higher
    terrain over western NC and vicinity, where isolated initiation is
    underway. The need for short-term watch issuance is uncertain, but
    will become increasingly possible with time, especially across
    south/east portions of the MCD area.

    ..Dean/Hart.. 06/25/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7ONVov1oArvNA5bHcfeFAuJZh6IEI9mHxpWC6dqpVR-6mR_lP11-k6-CFIehg_xRThYdcYGPB= yYx_EAHapr1aXKHGNA$ for graphic product...

    ATTN...WFO...RNK...GSP...MRX...FFC...

    LAT...LON 35248440 36028330 36518194 36358126 36008117 35668122
    35278163 35098201 34718260 34498321 34568355 34658408
    35248440=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


    =3D =3D =3D
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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Jun 25 15:52:10 2025
    ACUS11 KWNS 251551
    SWOMCD
    SPC MCD 251550 COR
    NCZ000-SCZ000-TNZ000-GAZ000-251745-

    Mesoscale Discussion 1432
    NWS Storm Prediction Center Norman OK
    1050 AM CDT Wed Jun 25 2025

    Areas affected...Parts of western NC/upstate SC into far northeast
    GA and extreme eastern TN

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

    Valid 251550Z - 251745Z

    CORRECTED FOR GEOGRAPHIC HEADLINE

    Probability of Watch Issuance...60 percent

    SUMMARY...Damaging downburst/outflow winds and isolated hail are
    possible into this afternoon.

    DISCUSSION...Morning soundings depict a rather volatile
    thermodynamic environment across parts of the Southeast this
    morning. A remnant EML and seasonably cold midlevel temperatures
    atop 70s F dewpoints are already supporting MLCAPE of 3000-4000
    J/kg. Temperatures will warm through the 90s F this afternoon,
    resulting in very steep low-level lapse rates.=20

    Low-level flow will generally remain weak, but modest northeasterly
    midlevel flow between a weakening upper ridge and an upper low near
    south FL could support weakly organized storms. However, even
    relatively disorganized storms in this regime will be capable of
    producing damaging/potentially severe downbursts and isolated hail,
    given the very favorable thermodynamic environment.=20

    Storm coverage remains somewhat uncertain into mid afternoon. The
    highest confidence is short-term development is across the higher
    terrain over western NC and vicinity, where isolated initiation is
    underway. The need for short-term watch issuance is uncertain, but
    will become increasingly possible with time, especially across
    south/east portions of the MCD area.

    ..Dean/Hart.. 06/25/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_tzmqLyB_bjlS-wRxOU4sfhcc91e3wz6rOqzNqglsWKyaemTuZ1QWDokpHzJHVC2n3pcwXuv_= _IOMUGvL7scGxuC5k8$ for graphic product...

    ATTN...WFO...RNK...GSP...MRX...FFC...

    LAT...LON 35248440 36028330 36518194 36358126 36008117 35668122
    35278163 35098201 34718260 34498321 34568355 34658408
    35248440=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


    =3D =3D =3D
    To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.

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