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  • MESO: Mesoscale Discussion 1909

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Oct 27 07:00:47 2021
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    ACUS11 KWNS 270700
    SWOMCD
    SPC MCD 270659=20
    TXZ000-OKZ000-270830-

    Mesoscale Discussion 1909
    NWS Storm Prediction Center Norman OK
    0159 AM CDT Wed Oct 27 2021

    Areas affected...Much of north central Texas

    Concerning...Severe Thunderstorm Watch 537...539...

    Valid 270659Z - 270830Z

    The severe weather threat for Severe Thunderstorm Watch 537, 539
    continues.

    SUMMARY...Increasingly widespread severe gusts appear possible
    across and northeast of the Dallas-Fort Worth metroplex through 3-4
    AM CDT.

    DISCUSSION...To the south of a developing MCV, 50+ kt rear inflow
    has developed with an increasingly organized segment of the squall
    line, to the southwest of the Dallas-Fort Worth Metroplex. Surface
    gusts in excess of 50 kt have already been recorded at Graham and
    Abilene within the past hour or so, and the potential for
    increasingly widespread severe gusts seems likely to increase as
    this activity overspread the Metroplex through 07-09Z. The boundary
    layer across much of north central Texas is seasonably moist and
    characterized by moderately large CAPE in excess of 1000 J/kg, in
    the presence of strengthening deep-layer shear and mid/upper forcing
    for ascent ahead of the approaching negatively-tilted trough, which
    should aid removal of remaining mid-level inhibition.

    ..Kerr.. 10/27/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!vprraBHexR-fR8leneBxZNgzjjS3_boIFkCJRL98nvQMkrgchu8Oy2E_MWEbnKdUeP2Qc4Wn$=
    for graphic product...

    ATTN...WFO...FWD...OUN...

    LAT...LON 31839753 32309798 32909775 33339779 33569768 33769695
    33729627 33469596 32709589 31839753=20



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