• MESO: Mesoscale Discussion 0542

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed May 5 02:29:09 2021
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    ACUS11 KWNS 050229
    SWOMCD
    SPC MCD 050228=20
    GAZ000-FLZ000-ALZ000-050400-

    Mesoscale Discussion 0542
    NWS Storm Prediction Center Norman OK
    0928 PM CDT Tue May 04 2021

    Areas affected...Portions of the FL Panhandle...far southeastern
    AL...and southern/central GA

    Concerning...Severe Thunderstorm Watch 151...

    Valid 050228Z - 050400Z

    The severe weather threat for Severe Thunderstorm Watch 151
    continues.

    SUMMARY...An isolated strong to damaging wind threat continues in
    the short term, but storm intensity should gradually decrease this
    evening. Downstream watch issuance is not expected.

    DISCUSSION...A long-lived MCS is beginning to show signs of
    decreasing intensity over the past hour or so, with cloud top
    temperatures warming in IR satellite imagery, lightning flash rates diminishing, and reflectivity cores aloft weakening. With the
    exception of the FL Panhandle, instability gradually wanes with
    eastward extent into central GA based on the latest mesoanalysis
    estimates. The southern portion of the line in far southeastern AL
    and the FL Panhandle has become oriented more parallel to the mean
    mid-level flow aloft, and has slowly decelerated. Still, isolated
    strong to damaging winds around 50-60 mph may occur with any of the
    stronger segments of the line over the next hour or so. A couple of
    measured wind gusts around 50 mph have recently occurred, and the
    ASOS in Albany GA reported a wind gust of 62 mph at 0211Z. Given the expectation that overall storm intensity should continue to decrease
    through the remainder of the evening, downstream watch issuance is
    not expected.

    ..Gleason.. 05/05/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!rFKCp_2ND2Zrz6TQRT345_nuPpQ1Vklw92Pjx2eOx555KdyKK9T2x16o4ljLdH6hXpYjPzO2$=
    for graphic product...

    ATTN...WFO...JAX...FFC...TAE...MOB...

    LAT...LON 30608667 31258496 31778385 32368365 32918386 33128392
    33018307 32538253 31198305 30158414 29638508 30208590
    30368640 30608667=20



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