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  • MD 1695 CONCERNING SEVERE THUNDERSTORM WATCH 520... FOR SOUTHERN AND EASTERN NEBRASKA INTO FAR SOUTHEASTERN SOUTH DAKOTA AND WESTERN IOWA
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    Mesoscale Discussion 1695
    NWS Storm Prediction Center Norman OK
    0558 PM CDT Thu Aug 18 2022
    
    Areas affected...southern and eastern Nebraska into far southeastern
    South Dakota and western Iowa
    
    Concerning...Severe Thunderstorm Watch 520...
    
    Valid 182258Z - 190100Z
    
    The severe weather threat for Severe Thunderstorm Watch 520
    continues.
    
    SUMMARY...Severe-weather risk continues with isolated storms moving
    eastward/southeastward in and near WW 520.
    
    DISCUSSION...Latest radar loop shows isolated intense updrafts along
    a surface front now draped from far southwestern Minnesota to
    south-central Nebraska.  Ahead of this boundary, a corridor of
    moderate instability (mixed-layer CAPE averaging 1000 to 2000 J/kg)
    will continue to fuel isolated storms, with updraft organization
    aided by veering/increasing flow with height yielding favorable
    shear (in excess of 40 kt in the 0-6km layer).  The most intense of
    these storms will remain capable of producing hail greater than
    golf-ball size, and wind gusts above 50 kt.
    
    ..Goss.. 08/18/2022
    
    ...Please see www.spc.noaa.gov for graphic product...
    
    ATTN...WFO...MPX...DMX...FSD...OAX...GID...LBF...
    
    LAT...LON   40700015 41029874 41719757 42749666 43769611 43859483
                43299485 41829594 40479787 40299950 40700015 
    
    
    Read more

    Thursday, August 18, 2022
    www.spc.noaa.gov

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