• MESO: Mesoscale Discussion 0285

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, April 23, 2018 15:09:36
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    ACUS11 KWNS 231509
    SWOMCD
    SPC MCD 231509
    SCZ000-GAZ000-231715-

    Mesoscale Discussion 0285
    NWS Storm Prediction Center Norman OK
    1009 AM CDT Mon Apr 23 2018

    Areas affected...Parts of coastal South Carolina

    Concerning...Severe potential...Watch unlikely

    Valid 231509Z - 231715Z

    Probability of Watch Issuance...5 percent

    SUMMARY...Locally gusty winds and perhaps a brief tornado are
    possible along parts of the South Carolina coast this morning.

    DISCUSSION...Radar data this morning depict a likely MCV lifting
    north across the Savannah, GA area. Warm advection/low-level
    confluence attendant to this MCV is focusing a band of convection
    that extends to the southeast offshore the coast. As the primary
    warm front remains farther south, onshore surface temperatures/dew
    points are only in the lower/mid 60s across coastal South Carolina,
    resulting in meager surface-based buoyancy. Still, a few stronger
    gusts have been reported recently near the GA/SC border, likely
    aided by weak low-level rotation in these cells lifting northeast.
    KCLX VWP data show notable veering of winds with height, favorable
    for continued weak rotation. In turn, localized strong, damaging
    gusts and perhaps even a brief tornado may be possible near the
    coast into early afternoon.

    ..Picca/Hart.. 04/23/2018

    ...Please see www.spc.noaa.gov for graphic product...

    ATTN...WFO...CHS...

    LAT...LON 32208132 32908033 33157998 33147970 32937949 32657966
    32288028 31828089 31788118 31938130 32208132



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, April 08, 2019 10:11:39
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 081011
    SWOMCD
    SPC MCD 081011
    FLZ000-ALZ000-081145-

    Mesoscale Discussion 0285
    NWS Storm Prediction Center Norman OK
    0511 AM CDT Mon Apr 08 2019

    Areas affected...western FL Panhandle into far southeast AL

    Concerning...Severe potential...Watch unlikely

    Valid 081011Z - 081145Z

    Probability of Watch Issuance...5 percent

    SUMMARY...A few strong wind gusts are possible, mainly across
    Okaloosa and Walton Counties in the FL Panhandle over the next hour
    as a bowing line segment moves inland. The overall threat is
    expected to remain marginal and a watch is not anticipated.

    DISCUSSION...A bowing line segment has intensified over the Gulf,
    just offshore from Okaloosa County FL. As the bow tracks northeast
    at around 40 mph early this morning, a few strong wind gusts around
    40-50 mph will be possible. Based on latest velocity data from KEVX,
    low level inhibition is likely reducing severe wind potential as
    velocity continues to decrease as the bow moves inland closer to the
    radar. Additional weakening with time is expected due to weak
    instability and a strengthening low level inversion away from the
    immediate coast. The strongest gusts will likely remain confined to
    areas closer to the coast for this reason. Given the marginal nature
    of the threat, a watch is not expected.

    ..Leitman/Thompson.. 04/08/2019

    ...Please see www.spc.noaa.gov for graphic product...

    ATTN...WFO...TAE...MOB...

    LAT...LON 30378680 30898666 31258613 31378579 31328546 31048523
    30648533 30288563 30168598 30278630 30378680



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