• MESO: Mesoscale Discussion 0203

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, March 14, 2019 11:53:09
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    ACUS11 KWNS 141053
    SWOMCD
    SPC MCD 141052
    LAZ000-TXZ000-141145-

    Mesoscale Discussion 0203
    NWS Storm Prediction Center Norman OK
    0552 AM CDT Thu Mar 14 2019

    Areas affected...Northern/Central/Southwest
    LA...East-Central/Southeast TX

    Concerning...Severe Thunderstorm Watch 22...

    Valid 141052Z - 141145Z

    The severe weather threat for Severe Thunderstorm Watch 22
    continues.

    SUMMARY...Threat for damaging wind gusts and hail will persist
    across northern/central LA and east-central/southeast TX for the
    next hour or so.

    DISCUSSION...Convective line continues to move east-southeastward at
    around 35-40 kt. Sporadic updraft intensification has been noted
    within the line over the past two hours with the strongest updraft
    currently located in San Augustine county TX. This trend is expected
    to continue as newly developed updrafts pulse up in before weakening
    as a result of dry air entrainment. Hail will be possible within
    these newly developed updrafts as well as a slightly higher wind
    damage potential than the rest of the line. Downstream air mass is
    moist but relatively warm temperatures around 850 mb support modest
    convective inhibition and a tempering of the overall instability.
    Even so, organized character to the convective line suggests it will
    continue gradually east-southward for the next hour or so.

    Downstream watch issuance is not currently anticipated for those
    portions of southeast TX and central/southwest LA not in Severe
    Thunderstorm Watch 22. Isolated hail and/or damaging winds gusts are
    possible in these areas but coverage is not expected to merit watch
    issuance. An extension in time may be warranted across northern LA
    to cover any severe threat persisting past 12Z.

    ..Mosier.. 03/14/2019

    ...Please see www.spc.noaa.gov for graphic product...

    ATTN...WFO...JAN...LCH...SHV...HGX...

    LAT...LON 31989367 32899280 32869216 32349200 31249219 30579301
    30539492 31989367



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