• MESO: Mesoscale Discussion 0170

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, March 09, 2019 18:00:38
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    ACUS11 KWNS 091700
    SWOMCD
    SPC MCD 091659
    ARZ000-LAZ000-TXZ000-091900-

    Mesoscale Discussion 0170
    NWS Storm Prediction Center Norman OK
    1059 AM CST Sat Mar 09 2019

    Areas affected...northern Louisiana into southern Arkansas

    Concerning...Severe Thunderstorm Watch 12...

    Valid 091659Z - 091900Z

    The severe weather threat for Severe Thunderstorm Watch 12
    continues.

    SUMMARY...A few storms may produce tornadoes across northern
    Louisiana into southern Arkansas, and parts of the severe watch will
    be upgraded to tornado.

    DISCUSSION...A line of storms currently extends from central AR into
    northwest LA along a cold front. While mixed storm modes have been
    observed, isolated supercells have been noted with periodic strong
    rotation. Given favorable effective SRH over 500 m2/s2 and areas of
    heating, the severe threat should persist for much of the afternoon
    prior to winds veering with a tornado, hail, or severe wind gust
    threat.

    ..Jewell/Thompson.. 03/09/2019

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

    ATTN...WFO...JAN...LZK...SHV...

    LAT...LON 32429404 33019400 33619353 34109292 34299243 34219190
    33549169 32869167 32519199 32189241 32099313 32059399
    32229401 32429404



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