• MESO: Mesoscale Discussion 0425

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Apr 6 12:35:11 2025
    ACUS11 KWNS 061235
    SWOMCD
    SPC MCD 061234=20
    ALZ000-MSZ000-061430-

    Mesoscale Discussion 0425
    NWS Storm Prediction Center Norman OK
    0734 AM CDT Sun Apr 06 2025

    Areas affected...parts of sern MS through cntrl AL

    Concerning...Tornado Watch 131...

    Valid 061234Z - 061430Z

    The severe weather threat for Tornado Watch 131 continues.

    SUMMARY...Convection may continue to undergo further organization
    and intensification through 9-10 AM CDT, accompanied by increasing
    risk for strong surface gusts, and a continuing risk for tornadoes.

    DISCUSSION...At least a bit broader, lower/mid-tropospheric cyclonic circulation appears to be evolving, perhaps including a surface
    meso-low now migrating east-northeastward into/across the Demopolis
    AL vicinity. Latest Rapid Refresh now indicates a more prominent south-southwesterly speed maximum associated with this feature,
    including 50+ kt in the 850-700 mb layer. Although moisture
    characterized by mid 60s+ surface dew points across central Alabama,
    between Montgomery and Birmingham still appear to supporting only
    modest CAPE (around 500 J/kg sampled in 12Z BMX sounding), low-level
    moisture advection and at least some boundary layer warming are
    likely to contribute to further destabilization in advance of the
    convection during the next few hours. Inflow of this air mass may
    be sufficient to support at least a gradual further intensification
    of activity during the next few hours, accompanied by increasing
    potential for strong surface gusts and a few tornadoes.=20

    Discrete thunderstorm development is also being maintained near/just
    ahead of the southern flank of the evolving convective system, and
    the occasional intensification of these cells, before merging into
    the line, may also be accompanied by increasing potential for a
    tornado near the Selma/Montgomery vicinities through mid morning.

    ..Kerr.. 04/06/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!69AEU1kj6mWunShRb_Um2knLUBk8L0NfZOrxnXHnPbDxIHvuBCrHvd8u8QCbaH6euMMPXmtLs= VxoUaNrJ-B7YTcVSNA$ for graphic product...

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

    LAT...LON 33198688 33358539 32058702 31338798 31068892 32338827
    33198688=20

    MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
    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.

    --- SBBSecho 3.20-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)