• MESO: Mesoscale Discussion 2110

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Sep 26 11:36:51 2024
    ACUS11 KWNS 261136
    SWOMCD
    SPC MCD 261136=20
    SCZ000-GAZ000-261330-

    Mesoscale Discussion 2110
    NWS Storm Prediction Center Norman OK
    0636 AM CDT Thu Sep 26 2024

    Areas affected...Far Eastern Georgia...Southern and Central South
    Carolina

    Concerning...Severe potential...Watch possible=20

    Valid 261136Z - 261330Z

    Probability of Watch Issuance...60 percent

    SUMMARY...An isolated tornado threat is expected to continue over
    the several hours from far eastern Georgia into southern and central
    South Carolina. Tornado watch issuance may become necessary.

    DISCUSSION...Hurricane Helene continues to move northward across the
    eastern Gulf of Mexico. Ahead of the system, onshore flow is present
    across much of the southern Atlantic Seaboard. Low-level convergence
    is maximized near the coast of Georgia and South Carolina where
    isolated storms have been generating over the last hour. RAP
    analysis shows weak instability near the coast, but also has an 850
    mb speed max located over eastern Georgia with wind speeds in the 30
    to 35 knot range. This is reflected on the Charleston, South
    Carolina WSR-88D VWP, which has 0-6 km shear near 40 knots, and 0-3
    km storm-relative helicity of near 170 m2/s2. This should be enough
    for tornado development associated with short-topped supercells. The
    tornado threat may spread northward into central South Carolina over
    the next few hours.

    ..Broyles/Guyer.. 09/26/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!76MoX1c3QmOsMls39vv1AL0oRr4oSQDPds1a4AeRVWyQKR14MqMKL8Q-h1gmcirqOlPZRT_dC= UmnpAdzViBRb5asahI$ for graphic product...

    ATTN...WFO...ILM...CHS...CAE...JAX...FFC...

    LAT...LON 32128025 31348099 31108137 31168179 31498203 32248236
    33108239 33658218 33998190 34098139 33958065 33678006
    33217979 32657982 32128025=20


    =3D =3D =3D
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