• MESO: Mesoscale Discussion 0082

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Feb 15 07:16:12 2026
    ACUS11 KWNS 150716
    SWOMCD
    SPC MCD 150715=20
    ALZ000-MSZ000-LAZ000-150915-

    Mesoscale Discussion 0082
    NWS Storm Prediction Center Norman OK
    0115 AM CST Sun Feb 15 2026

    Areas affected...Southern Mississippi...far southeast Louisiana and
    far southwest Alabama

    Concerning...Tornado Watch 7...

    Valid 150715Z - 150915Z

    The severe weather threat for Tornado Watch 7 continues.

    SUMMARY...The potential for severe gusts and brief embedded
    circulations is expected to continue across portions of the lower
    Mississippi River Valley and into far southwest Alabama over the
    next several hours.

    DISCUSSION...A well-organized QLCS continues to progress eastward
    across the lower MS River Valley per regional radar mosaics. KDGX
    imagery has sampled at least two tornadic debris signatures within
    the past hour on the northern flank of a bowing segment of the line
    where 0-1 km SRH is on the order of 400 m2/s2 per KDGX VWP
    observations. However, this section of the line is moving into a
    drier, less buoyant airmass, and lightning activity has been
    decreasing within the past 20-30 minutes. While brief circulations
    will remain possible in the near-term (next hour or so), a gradual
    weakening of the line is anticipated roughly along and north of
    Highway 84 in southern MS/southwest AL.=20

    Further south, more backed southerly winds imply slightly weaker
    low-level shear, but a recent 06 UTC sounding from LIX sampled
    around 280 m2/s2 effective SRH within a sufficiently buoyant air
    mass preceding the line. This environment will continue to support
    organized convection with the potential for strong/severe wind gusts
    and embedded mesovortices - especially where more meridional
    segments can become established within the line. Coastal surface
    observations show mid-60 dewpoints spreading as far east as the
    MS/AL border, suggesting that the downstream environment is
    favorable for maintaining the QLCS for several more hours along and
    just north of the coastline.

    ..Moore.. 02/15/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5fmz25g4_ErYRqp5PgsQIB5rwjm5zNCFAOstfwyLI5OQVwfLEONDjAF8Lxr5l84FS8cKMZm8b= FOvAvr6hEmn5HsZgZk$ for graphic product...

    ATTN...WFO...MOB...JAN...LIX...

    LAT...LON 29339104 29839059 30968982 31338968 31838979 32168995
    32378989 32528970 32548925 32448876 32228846 31958832
    31708825 31168816 30818815 30428824 30308846 30258872
    30138887 29928912 29648940 29298980 29139007 29069045
    29049069 29159104 29339104=20

    MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH


    =3D =3D =3D
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