• MESO: Mesoscale Discussion 0553

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Sun Apr 26 23:32:34 2026
    ACUS11 KWNS 262332
    SWOMCD
    SPC MCD 262332=20
    MOZ000-ARZ000-270100-

    Mesoscale Discussion 0553
    NWS Storm Prediction Center Norman OK
    0632 PM CDT Sun Apr 26 2026

    Areas affected...Central and Southern Missouri

    Concerning...Tornado Watch 150...

    Valid 262332Z - 270100Z

    The severe weather threat for Tornado Watch 150 continues.

    SUMMARY...A severe threat is expected to develop across parts of
    central and southern Missouri over the next couple of hours. As a
    severe convective cluster moves toward the eastern edge of Tornado
    Watch 150, new watch issuance or a watch extension will become
    necessary.

    DISCUSSION...Latest surface analysis shows a moist airmass over the
    Ozarks, with backed convergent southeasterly winds over much of
    central and southern Missouri. Low-level convergence is maximized
    over western Missouri, where a severe convective cluster is ongoing.
    =46rom this cluster, a gradient of moderate instability (MLCAPE in the
    1000 to 2000 J/kg range) extends southeastward across south-central
    Missouri. The storms are expected to move along this gradient over
    the next couple hour hours, and should make a gradual turn toward
    the southeast. The instability combined with moderate deep-layer
    shear will support a severe threat. Severe wind gusts, isolated
    large hail and a tornado threat will be possible. New weather watch
    issuance or a watch extension will be needed within the next hour.

    Further to the north across parts of north-central Missouri, from
    near Columbia and I-70 northward, the airmass is weakly unstable.
    Although isolated severe wind gusts will be possible as the northern
    end of the severe convective cluster moves into the area, the weaker instability should result in a gradual weakening trend.

    ..Broyles/Leitman.. 04/26/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9-XyIkuakMJ2WwUyl6pkggaBIRucWi1iw4d-SRSUhyjNOELDSZvVtvn-gushSNToNp8WwJKJL= Q3UtrU1GKWgu6tNlsk$ for graphic product...

    ATTN...WFO...PAH...LSX...LZK...SGF...EAX...

    LAT...LON 38579409 37819413 36949334 36499258 36399134 36549093
    36929069 37419080 38459144 39029206 39209274 39139350
    38969388 38579409=20

    MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


    =3D =3D =3D
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