• MESO: Mesoscale Discussion 2306

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Dec 29 00:01:39 2024
    ACUS11 KWNS 290001
    SWOMCD
    SPC MCD 290000=20
    MSZ000-LAZ000-290100-

    Mesoscale Discussion 2306
    NWS Storm Prediction Center Norman OK
    0600 PM CST Sat Dec 28 2024

    Areas affected...southern Louisiana and far southern Mississippi

    Concerning...Tornado Watch 720...

    Valid 290000Z - 290100Z

    The severe weather threat for Tornado Watch 720 continues.

    SUMMARY...Threat for tornadoes and wind to continue across southern
    Louisiana into far southern Mississippi.

    DISCUSSION...A line of thunderstorms with embedded supercells
    structures continues across portions of southern Louisiana into
    Mississippi as of 00z. The environment across this region remains
    highly favorable, with MLCAPE around 2000-2500 J/kg amid surface dew
    points in the upper 60s to 70s. Forcing for ascent has begun to
    gradually shift northward but strongly sheared profiles remain
    favorable for supercell maintenance. VAD profiles from HDC (Hammond,
    LA) show favorable curvature in the bottom 0-3 km, with 0-500m SRH
    around 300 m2/s2. This in combination with favorable thermodynamics
    will continue to support a risk for tornadoes, some of which may be
    strong. Potential for damaging winds will also remain likely with
    more linear storm modes. Local extension of WW720 has occurred
    across southeastern LA into southern MS to cover this threat.

    ..Thornton/Gleason.. 12/29/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4-gY0i-PjCNXKVPstREdxp7bkJh1MQSNG2hIV2-Xu4AxoJgEzJxpdVSqcWYVfDRZcFypjzWo3= 1W9qWIex_qmFEpUarw$ for graphic product...

    ATTN...WFO...MOB...JAN...LIX...LCH...

    LAT...LON 29869314 30279264 30629219 30849184 31019133 31019046
    31028996 30988938 30878872 30718850 30498850 30298855
    29948873 29648904 29348968 29329038 29439150 29619255
    29869314=20


    =3D =3D =3D
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