• MESO: Mesoscale Discussion 0419

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Apr 6 01:16:26 2025
    ACUS11 KWNS 060115
    SWOMCD
    SPC MCD 060115=20
    TNZ000-ALZ000-MSZ000-060245-

    Mesoscale Discussion 0419
    NWS Storm Prediction Center Norman OK
    0815 PM CDT Sat Apr 05 2025

    Areas affected...Northeast MS...northern AL...southern middle TN

    Concerning...Tornado Watch 124...125...

    Valid 060115Z - 060245Z

    The severe weather threat for Tornado Watch 124, 125 continues.

    SUMMARY...A threat for all severe hazards will continue into late
    evening. New watch issuance is likely by 9 PM CDT.

    DISCUSSION...A cluster of intense supercells is ongoing across
    extreme northeast MS this evening, with multiple spotter and
    radar-confirmed tornadoes over the last 60-90 minutes. A trailing
    storm cluster into north-central MS has also shown signs of
    increasing organizations. The environment from
    north-central/northeast MS into extreme northwest AL and extreme southwest/southern middle TN remains favorable for tornadic
    supercells, with favorably backed surface winds, rich boundary-layer
    moisture, moderate to strong buoyancy, and increasing low-level
    flow/shear (as noted on the KGWX VWP). This environment continues to
    support a threat of strong tornadoes, as well as localized large to
    very large hail and damaging winds. Any further upscale growth could
    result in potential for larger-scale swaths of damaging winds as
    storms move east-northeastward with time.=20

    Downstream into a larger portion of northern AL and southern middle
    TN, lower dewpoints (dropping to the lower 60s F) and weaker
    buoyancy are noted in current observations and analyses. However,
    the low-level jet will remain strong through the evening/night, and
    some moisture recovery will be possible in advance of the ongoing
    convection. This will support a continued threat of all severe
    hazards well past the scheduled 9 PM CDT expiration time of WW 124.
    As a result, new watch issuance is expected soon, which may extend
    into downstream areas of north-central/northeast AL and
    southern/eastern TN.

    ..Dean/Hart.. 04/06/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6lK77OqV1Kw3pMF6OndWAuOUCrI1MRZngGtjV_Xl8sqk1rnrN7AwLMEp4wG683K7jYiAKeDEF= gs4G8LMstQfHpzISPY$ for graphic product...

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

    LAT...LON 33868898 33858951 34078963 34358931 35278791 35468737
    35488609 35408541 35108544 34628619 34208760 33938872
    33868898=20

    MOST PROBABLE PEAK TORNADO INTENSITY...120-150 MPH
    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


    =3D =3D =3D
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