• MESO: Mesoscale Discussion 0251

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, March 12, 2022 15:31:42
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    ACUS11 KWNS 121531
    SWOMCD
    SPC MCD 121530=20
    FLZ000-121630-

    Mesoscale Discussion 0251
    NWS Storm Prediction Center Norman OK
    0930 AM CST Sat Mar 12 2022

    Areas affected...central FL

    Concerning...Tornado Watch 43...

    Valid 121530Z - 121630Z

    The severe weather threat for Tornado Watch 43 continues.

    SUMMARY...Locally damaging gusts and a tornado or two will remain
    possible across the central Florida Peninsula the next couple of
    hours. A watch extension will likely be needed.

    DISCUSSION...A line of strong to severe thunderstorms will continue
    to shift east/southeast across the central FL Peninsula over the
    next few hours. Several observation sites have reports wind gusts to
    around 40 kt recently with a few reports of wind damage noted in
    mPING reports. Over the past hour, a few cells embedded within the
    line have also show transient low-level rotation. Strong vertical
    shear with effective shear magnitudes greater than 50 kt will
    persist over the central peninsula for several more hours, aiding in maintenance of a well established QLCS. Tornado Watch 43 is set to
    expire at 16z. However, strong to severe convection will likely
    persist another couple of hours beyond current watch expiration
    time, and an extension in time/space across southern portions of the
    Tampa Bay and Melbourne County Warning Areas will likely be needed.

    ..Leitman.. 03/12/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!oaID7Ca_it6vxytaRuBt7RELYOhh3wwLGMS8NenMS0RmIbge5ii4f8bWKacT8tmyzXwsU_sq$=
    for graphic product...

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

    LAT...LON 27458272 28628164 29228083 29168044 28918022 27988006
    27428056 27168092 26798162 26548225 26578248 26858277
    27318278 27458272=20



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Friday, March 15, 2024 03:59:56
    ACUS11 KWNS 150359
    SWOMCD
    SPC MCD 150359=20
    WVZ000-OHZ000-KYZ000-INZ000-150600-

    Mesoscale Discussion 0251
    NWS Storm Prediction Center Norman OK
    1059 PM CDT Thu Mar 14 2024

    Areas affected...Far Southern Indiana...Kentucky...Southern
    Ohio...Far Western West Virginia

    Concerning...Tornado Watch 49...

    Valid 150359Z - 150600Z

    The severe weather threat for Tornado Watch 49 continues.

    SUMMARY...A severe threat will likely continue for a couple more
    hours across the Ohio Valley. Wind damage, isolated large hail, and
    perhaps a brief spinup will be possible.

    DISCUSSION...The latest mosaic radar imagery shows an mesoscale
    convective system over the Ohio Valley, with several embedded
    supercells and multiple short line segments. Weak instability is
    currently located to the south of the MCS across much of Kentucky.
    In spite of this, a 65 to 80 knot mid-level jet is analyzed over
    northern Indiana and northern Ohio. The MCS is currently located
    near the southern edge of the mid-level jet, where 0-6 km shear is
    estimated to be near 50 knots, according to the RAP. In addition, a
    40 knot low-level jet is analyzed over the Ohio Valley. The strong
    shear suggests that severe storms will continue to be possible over
    the next few hours. Wind damage, isolated large hail, and perhaps a
    brief tornado will be possible. However, the severe threat is
    expected to gradually decrease over time as the airmass gradually
    stabilizes.

    ..Broyles.. 03/15/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6GHm4k1pVhwLiYijooHyPCeNP73N50hviA4NZJ5VJbEJUDdzPctSfB2JUXkcad59Ypk07GRrV= boizS6mCKqMZwPVdM4$ for graphic product...

    ATTN...WFO...PBZ...RLX...JKL...ILN...LMK...

    LAT...LON 38738529 38158663 37438688 37078680 36878636 36898580
    37458441 38008312 38818155 39328128 39508136 39658167
    39648224 39238390 38738529=20


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