• MESO: Mesoscale Discussion 0356

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Apr 10 04:01:27 2021
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    ACUS11 KWNS 100401
    SWOMCD
    SPC MCD 100400=20
    MSZ000-LAZ000-100600-

    Mesoscale Discussion 0356
    NWS Storm Prediction Center Norman OK
    1100 PM CDT Fri Apr 09 2021

    Areas affected...southern Louisiana and Mississippi

    Concerning...Severe Thunderstorm Watch 86...

    Valid 100400Z - 100600Z

    The severe weather threat for Severe Thunderstorm Watch 86
    continues.

    SUMMARY...Severe wind gusts remain possible with storms oriented
    along an outflow boundary from central Louisiana into central
    Mississippi. A tornado risk may eventually develop later tonight
    south of this outflow boundary, and convective trends will continue
    to be monitored.

    DISCUSSION...A long-lived thunderstorm corridor persists, and is
    gradually translating east/southeast as outflow pushes south with
    time. Many of these storms are elevated north of the boundary, but
    may still produce strong wind gusts, and perhaps severe immediately
    along it.

    Of note in the surface analysis is a limiting streamline extending
    from the northern Gulf of Mexico into south-central MS, with lower
    70s F dewpoints west of this line. Bands of shallow
    convection/showers are currently observed, and trends will need to
    be monitored closely for more vigorous thunderstorms forming south
    of the outflow boundary.=20

    With 0-1 SRH over 200 m2/s2 observed on VWPs, and ample instability,
    a conditional risk of tornadoes exists with any cells that can form
    away from the undercutting outflow.

    ..Jewell.. 04/10/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!uNL8XmFfOsAu01WLQV6_AFSJDfH7S4MJrLwgeerXGpKDLeVyyHVX0W5Q31o7pUAh2snfGO8n$=
    for graphic product...

    ATTN...WFO...JAN...LIX...LCH...SHV...

    LAT...LON 31399244 31709138 32159026 32219014 32178979 31828947
    31088926 30568951 30308968 30209000 30179086 30079184
    30279285 30719314 31029306 31399244=20



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