• MESO: Mesoscale Discussion 0177

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Mon Mar 9 12:10:56 2026
    ACUS11 KWNS 091210
    SWOMCD
    SPC MCD 091210=20
    ARZ000-TXZ000-OKZ000-091415-

    Mesoscale Discussion 0177
    NWS Storm Prediction Center Norman OK
    0710 AM CDT Mon Mar 09 2026

    Areas affected...Parts of southeast OK/northeast TX into AR and far
    northwest LA

    Concerning...Severe potential...Watch unlikely=20

    Valid 091210Z - 091415Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Isolated severe storms are possible this morning.

    DISCUSSION...Elevated convection has developed across parts of south-central/southeast OK this morning, within a low-level
    warm-advection regime and in advance of a low-amplitude midlevel
    shortwave trough moving across OK. Increasing moisture in the
    850-700 mb layer beneath relatively steep midlevel lapse rates is
    resulting in MUCAPE values of greater than 1000 J/kg from north TX
    into AR, which will aid in the development of potentially robust
    updrafts. Coverage of storms through mid morning remains somewhat
    uncertain, due to the only modest large-scale ascent associated with
    the weakening shortwave trough. However, moderate mid/upper-level
    flow will support sufficient effective shear for some storm
    organization, with any sustained robust updrafts becoming capable of
    producing large hail and locally gusty winds.=20

    Watch issuance is considered unlikely in the short term, with the
    expectation that the severe threat will generally remain isolated
    through mid morning. Greater severe potential is still expected from
    late morning into the afternoon across parts of AR/MS, when
    surface-based destabilization becomes more supportive of organized
    cells and/or clusters.

    ..Dean/Mosier.. 03/09/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!64IoB01kSV-MmKc8McOZYYSahE0TDtC3KYXLCuu1trp8JP_24Bd7z_F6I0E4G5m7IBRy4TSTS= 1Bfaf_VAu_bN_IUTf0$ for graphic product...

    ATTN...WFO...LZK...SHV...TSA...FWD...OUN...

    LAT...LON 35199666 35749427 35639267 35409202 34869173 33969238
    33309381 33119480 33129553 33309636 33579692 34239717
    35199666=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


    =3D =3D =3D
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    * Origin: Capitol City Online (1:2320/107)