• MESO: Mesoscale Discussion 0335

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, March 24, 2022 15:52:41
    This is a multi-part message in MIME format...

    ------------=_1648137167-130905-1489
    Content-Type: text/plain
    Content-Transfer-Encoding: Quoted-printable

    ACUS11 KWNS 241552
    SWOMCD
    SPC MCD 241552=20
    FLZ000-241745-

    Mesoscale Discussion 0335
    NWS Storm Prediction Center Norman OK
    1052 AM CDT Thu Mar 24 2022

    Areas affected...Parts of the east central Florida Peninsula

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

    Valid 241552Z - 241745Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Increasing and intensifying thunderstorm activity is
    possible across much of the region through 2-4 PM EDT, some of which
    may pose a risk for hail and potentially damaging wind gusts. It
    still appears unlikely that a severe weather watch will be needed,
    but trends will continue to be monitored.

    DISCUSSION...An inland advancing pre-frontal wind shift and, more
    recently, the trailing sea-breeze, have provided a focus for
    sustained convective development this morning. Downstream of this
    activity, a seasonably moist boundary layer is destabilizing with
    insolation and mixing contributing to steepening low-level lapse
    rates. Mixed-layer CAPE may begin to maximize around or in excess
    of 1500 J/kg within he next few hours. This is occurring in the
    presence of moderate to strong deep-layer shear, beneath 35-50 kt
    southwesterly mid-level flow. Low-level hodographs appear largely
    linear, but mean environmental wind speeds in the lowest few
    kilometers above ground level are around 25-30 kt.

    With continuing gradual mid-level height falls overspreading the
    region, and lingering inhibition weakening further, substantive
    thunderstorm intensification seems probable across interior to
    coastal east central Florida through 18-20Z. This might include a
    mix of discrete storms and a small organizing cluster or two, with
    isolated supercells possible. Stronger activity may be accompanied
    by small to perhaps marginally severe hail. However, locally
    damaging surface gusts appears the primary potential severe hazard,
    aided by heavy precipitation loading and latent cooling due to
    melting and evaporation in downdrafts.

    ..Kerr/Guyer.. 03/24/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!t0U5ohJo9nXfGrvzXRxS0tv4Bo_SgUKgpr_iloG6ZMpQ_Y-YnDSGzUchaWa_9pCao-tZc7Cr$=
    for graphic product...

    ATTN...WFO...MFL...MLB...TBW...

    LAT...LON 26798117 27388126 28388120 29018122 29278112 28498057
    26928029 26638061 26798117=20



    ------------=_1648137167-130905-1489
    Content-Type: text/plain; charset="UTF-8"
    Content-Disposition: inline
    Content-Transfer-Encoding: 8bit
    MIME-Version: 1.0

    = = =
    To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM. ------------=_1648137167-130905-1489--

    --- SBBSecho 3.14-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)
  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, March 25, 2023 04:37:05
    ACUS11 KWNS 250437
    SWOMCD
    SPC MCD 250436=20
    GAZ000-ALZ000-MSZ000-250630-

    Mesoscale Discussion 0335
    NWS Storm Prediction Center Norman OK
    1136 PM CDT Fri Mar 24 2023

    Areas affected...northern and central Alabama and adjacent portions
    of

    Concerning...Tornado Watch 77...

    Valid 250436Z - 250630Z

    The severe weather threat for Tornado Watch 77 continues.

    SUMMARY...The risk for a few tornadoes continues, but probably will
    gradually lessen with storms overspreading the region through 2-3 AM
    CDT.

    DISCUSSION...Stronger convection appears to be gradually
    consolidating on the leading edge of the lower/mid tropospheric
    cooling across northeastern into central Mississippi. As this
    progresses eastward, and the associated mid-level troughing
    continues northeastward through the middle Mississippi Valley/Ozark
    Plateau vicinity, large clockwise-curved low-level hodographs across
    east central Mississippi into northern and central Alabama are
    forecast to gradually trend more linear through 07-08Z.=20=20

    Additionally, boundary-layer moisture remains slower to recover
    across central through northern Alabama, where dew points remain in
    the relatively modest upper 50s through lower 60s F. It remains
    unclear the extent to which low-level thermodynamic profiles will
    continue to support tornadic supercells. It is possible that the
    tornado risk associated with convection spreading into northern
    Alabama has peaked. However, at least some risk for additional
    tornadoes probably lingers, along with a continuing risk for
    damaging wind gusts several more hours.

    ..Kerr.. 03/25/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9YfwB5SyreIx4FDOFLZ_5pVP0QaFBo5PlJQ9cxvTcv3JwgVVpRZnGhKrGl8RJRLoFrsfEP9su= XIb5CXbVVBc7FYunms$ for graphic product...

    ATTN...WFO...FFC...BMX...HUN...JAN...

    LAT...LON 34068761 34868674 34688532 33178643 32928911 34068761=20


    =3D =3D =3D
    To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.

    --- SBBSecho 3.14-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)
  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tuesday, April 02, 2024 03:46:29
    ACUS11 KWNS 020346
    SWOMCD
    SPC MCD 020345=20
    ARZ000-TXZ000-OKZ000-020515-

    Mesoscale Discussion 0335
    NWS Storm Prediction Center Norman OK
    1045 PM CDT Mon Apr 01 2024

    Areas affected...portions of southeastern Oklahoma into northeastern
    Texas and far western Arkansas

    Concerning...Severe Thunderstorm Watch 70...

    Valid 020345Z - 020515Z

    The severe weather threat for Severe Thunderstorm Watch 70
    continues.

    SUMMARY...The severe threat continues across Severe Thunderstorm
    Watch 70. The main severe threat exists across northern portions of
    the watch as a line of storms approaches from the west. Damaging
    gusts are the main threat, though a tornado cannot be ruled out.

    DISCUSSION...The earlier QLCS with embedded supercells across
    northern TX has diminished in intensity given increasing inhibition.
    However, a pronounced QLCS is in progress across central OK, and
    this convection may move into Severe Thunderstorm Watch 70 over the
    next few hours with a damaging gust threat. Portions of the watch
    across eastern OK into western AR will most likely experience this
    QLCS later this evening. It is unclear how far south the QLCS will
    build into TX, so the severe threat is more conditional across the
    TX portion of the watch. Regional VADs, 03Z mesoanalysis, and RAP
    forecast soundings all show elongated hodographs with decent
    low-level curvature. However, CINH is increasing above the boundary
    layer given nocturnal cooling, tempering the tornado threat.
    Nonetheless, a tornado cannot be completely ruled out if a QLCS
    circulation can ingest any surface-based parcels.

    ..Squitieri.. 04/02/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7F8EcW4YsBkTjfw6dBiAxP_wdhEF8gllQ9rpiSkmwi5px0wNeDGeRZP2luCmtRzxqFEROp2MR= DsMDzf23be3n-NuovA$ for graphic product...

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

    LAT...LON 33639449 33409486 33329588 33439637 33469647 33789630
    35309524 36219452 36299369 35819349 33639449=20


    =3D =3D =3D
    To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.

    --- SBBSecho 3.20-Linux
    * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)