• MESO: Mesoscale Discussion 1606

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, November 01, 2018 00:29:23
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    ACUS11 KWNS 010029
    SWOMCD
    SPC MCD 010028
    ARZ000-LAZ000-TXZ000-010200-

    Mesoscale Discussion 1606
    NWS Storm Prediction Center Norman OK
    0728 PM CDT Wed Oct 31 2018

    Areas affected...LA...southeast AR

    Concerning...Severe potential...Watch likely

    Valid 010028Z - 010200Z

    Probability of Watch Issuance...80 percent

    SUMMARY...Severe threat will increase across much of LA into
    southeast AR by late evening. Damaging winds along with a few
    tornadoes are possible.

    DISCUSSION...Well-organized squall line has evolved along a sharp
    cold front from northeast TX to west of Houston. Several bow-type
    structures are noted along the squall line along with a few embedded supercells. High-level flow is beginning to increase across this
    region ahead of a progressive short-wave trough and this feature is
    expected to aid LLJ into the MS Delta region over the next few
    hours. Latest radar data suggests the frontal convection is surging
    east in excess of 35kt and this activity should exit ww416 around
    02z. Additionally, pre-frontal cluster over southeast TX should
    propagate into the lower Sabine River Valley over the next few
    hours. Severe threat is increasing downstream and a new tornado
    watch will likely be issued by 01z.

    ..Darrow/Guyer.. 11/01/2018

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

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

    LAT...LON 29749396 33139299 33009130 29619245 29749396



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