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  • MESO: Mesoscale Discussion 1435

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, September 08, 2018 21:40:19
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 082140
    SWOMCD
    SPC MCD 082139
    KYZ000-INZ000-082345-

    Mesoscale Discussion 1435
    NWS Storm Prediction Center Norman OK
    0439 PM CDT Sat Sep 08 2018

    Areas affected...Extreme southern Indiana and north central Kentucky
    near the Ohio River

    Concerning...Severe potential...Watch possible

    Valid 082139Z - 082345Z

    Probability of Watch Issuance...40 percent

    SUMMARY...The threat of a brief tornado or two may persist for 1-2
    more hours from extreme southern Indiana to just across the Ohio
    River in Kentucky. Due to the ongoing situation and small threat
    area both spatially and temporally, a watch may not be required.

    DISCUSSION...An area of low pressure currently exists near
    Evansville, Indiana and will continue to translate mainly eastward
    along a stationary boundary from far southern Indiana into northern
    Kentucky near the Ohio River. Surface analysis indicates 1-1.5 mb/hr
    pressure falls, and very moist air mass exists south of the
    boundary. Low-level shear is maximized near the front, and this is
    where the primary short-term tornado risk will remain. Eventually,
    the ongoing supercells will encounter cooler air to the north,
    ending the threat with those. However, any cells that do redevelop
    along and south of the boundary, may pose a brief tornado threat.
    Trends will continue to be monitored for any potential longer-term
    threat developing.

    ..Jewell/Guyer.. 09/08/2018

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

    ATTN...WFO...LMK...PAH...

    LAT...LON 38068732 38188720 38318664 38348616 38488551 38348516
    38048526 37778549 37668592 37638669 37628711 37678734
    37808740 38068732



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