• MESO: Mesoscale Discussion 1862

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Aug 1 19:07:46 2025
    ACUS11 KWNS 011907
    SWOMCD
    SPC MCD 011907=20
    ALZ000-MSZ000-012100-

    Mesoscale Discussion 1862
    NWS Storm Prediction Center Norman OK
    0207 PM CDT Fri Aug 01 2025

    Areas affected...Central Mississippi and western Alabama

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

    Valid 011907Z - 012100Z

    Probability of Watch Issuance...5 percent

    SUMMARY...Damaging winds are becoming increasingly possible across
    central Mississippi and far western Alabama. However, the overall
    magnitude of this threat should remain sufficiently limited to
    preclude watch issuance.

    DISCUSSION...Recent imagery from KGWX and KDGX shows convective
    clusters developing across central MS as a diffuse cold front begins
    to impinge on a moist and uncapped air mass. Recent RAP and HRRR
    forecast soundings appear to be capturing near-surface
    temperature/dewpoint trends well, and suggest MLCAPE values are
    within the 2000-2500 J/kg range with theta-e deficits on the order
    of 20-25 K, and 0-1 km lapse rates approaching 8 C/km. This
    thermodynamic environment is favorable for strong wet downbursts,
    which will become increasingly likely as cold pool
    amalgamation/upscale growth continues with the gradual
    intensification of the emerging thunderstorm cluster. Sporadic
    damaging wind gusts (most likely within the 45-55 mph range) appear
    likely, though a gust or two near 60 mph will be possible as this
    activity spreads south/southeast through late afternoon. Very weak
    flow aloft sampled by regional VWPs (generally 15 knots or less
    through 7 km) will limit the potential for appreciable storm
    organization and more substantial peak gusts, though isolated
    instances wind damage are anticipated.

    ..Moore/Smith.. 08/01/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-096ndlS7X-_EQtOReha5vGZmSM9DYpQEt4k0_IPOilP1gV_4NNt1spZ1jrZdLuK_aUz3XhHd= 7pLw8saxNkH6OFHWCo$ for graphic product...

    ATTN...WFO...BMX...MOB...MEG...JAN...

    LAT...LON 33309046 33698935 34058826 33908768 33628738 33148734
    32588746 32238767 32038798 31918858 31918916 31978955
    32048988 32189019 32379042 32629053 32859063 32999064
    33309046=20

    MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH


    =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.

    --- SBBSecho 3.28-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)