• MESO: Mesoscale Discussion 1084

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, July 19, 2018 18:28:10
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    ACUS11 KWNS 191828
    SWOMCD
    SPC MCD 191827
    IAZ000-MNZ000-191930-

    Mesoscale Discussion 1084
    NWS Storm Prediction Center Norman OK
    0127 PM CDT Thu Jul 19 2018

    Areas affected...South-central Minnesota...north-central Iowa

    Concerning...Severe potential...Watch unlikely

    Valid 191827Z - 191930Z

    Probability of Watch Issuance...5 percent

    SUMMARY...A few instances of brief funnel clouds are possible with
    stronger updrafts near a surface warm front and upper-level low. Any
    funnel that reaches the ground, though unlikely, would be brief and
    weak. No WW is likely.

    DISCUSSION...Ambient vorticity from a strong upper-level low as well
    as a surface warm front has led to a few instances stronger updrafts
    acquiring weak rotation and producing funnel clouds. These funnels
    were reported with a line of generally weak storms from Brown
    County, MN to near Palo Alto County, IA. Brief instances of funnels
    may occur with some of the stronger updrafts. While these funnels
    are not likely to reach the ground, should touchdown occur, it would
    likely be brief and quite weak. No WW is likely.

    ..Wendt/Guyer.. 07/19/2018

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

    ATTN...WFO...MPX...DMX...

    LAT...LON 44049480 44119481 44219497 44469515 44639504 44669441
    44519404 44209366 43509330 43069349 42999393 43089431
    43529463 44049480



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