• MESO: Mesoscale Discussion 2440

    From COD Weather Processor @1:2320/107 to All on Tue Nov 3 06:46:32 2026
    ACUS11 KWNS 030646
    SWOMCD
    SPC MCD 030645
    ARZ000-TXZ000-OKZ000-030845-

    Mesoscale Discussion 2440
    NWS Storm Prediction Center Norman OK
    1245 AM CST Tue Nov 03 2026

    Areas affected...Eastern Oklahoma into western Arkansas and the
    Texarkana region

    Concerning...Tornado Watch 703...

    Valid 030645Z - 030845Z

    The severe weather threat for Tornado Watch 703 continues.

    SUMMARY...The threat for severe winds, and perhaps a brief tornado,
    will continue across far eastern Oklahoma and into far western
    Arkansas for the next hour or so. Thunderstorms moving into the
    greater Texarkana region may pose an occasional severe threat
    through the early morning hours, but additional watch issuance is
    not expected.

    DISCUSSION...Latest MRMS imagery depicts the most intense convection
    traversing eastern Oklahoma with strong velocities noted off the
    KFSM radar. This compact line segment will migrate across the
    northern fringe of the low-level moisture plume/buoyancy axis over
    the next couple of hours, and given its favorable orientation with
    the deep-layer shear vector and strong low-level SRH noted in the
    KFSM VWP, will continue to pose a threat for severe wind, and
    perhaps a brief tornado, as it approaches the Fort Smith, AR area.
    Gradual weakening of this segment is anticipated after roughly 08
    UTC as it moves further into AR and into a more stable air mass.

    Further south, a loosely organized convective band moving across the
    northern Dallas/Fort-Worth metro will continue to push
    east/northeast towards the greater Texarkana region over the next
    several hours. Downstream of this segment, richer low-level moisture
    (dewpoints in the 70s) continues to support MLCAPE values upwards of
    1000 J/kg within a moderately sheared environment (per regional
    VWPs). The long residence time within this warm sector may support
    occasional intensification of cells/segments within the line that
    could pose a threat for isolated severe gusts over the next several
    hours. However, poor alignment with the deep-layer shear vector
    coupled with increasing displacement from the primary upper-level
    forcing for ascent should act to modulate overall storm organization
    and intensity. These concerns limit confidence in the need for
    additional watch issuance at this time.

    ..Moore.. 11/03/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!-d3Ws58-ZyCZl8UrjNSraOm67MwtMPXakyzfWPWp6clwhIwmNtu0v5UYJqaXgiyiWIDPHPj8r2xKdDN8bcFKvVIPlGI$ for graphic product...

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

    LAT...LON 33089698 34289588 35249535 35629492 35739442 35739406
    35669389 35499377 35159374 33729387 33409403 33119438
    32959478 32879543 32839596 32879632 32929662 33089698

    MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
    = = =
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    --- scorpsmtpd
    * Origin: capitolcityonline.net * KY, USA (1:2320/107)