• MESO: Mesoscale Discussion 0795

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tuesday, June 19, 2018 22:29:08
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    ACUS11 KWNS 192229
    SWOMCD
    SPC MCD 192228
    NEZ000-KSZ000-COZ000-200030-

    Mesoscale Discussion 0795
    NWS Storm Prediction Center Norman OK
    0528 PM CDT Tue Jun 19 2018

    Areas affected...Southwest Nebraska

    Concerning...Severe potential...Watch possible

    Valid 192228Z - 200030Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Severe threat increasing across the discussion area.
    Convective trends are being monitored.

    DISCUSSION...Convection with transient supercell characteristics
    entering Phillips County, Colorado is expected to continue
    propagating eastward into southwest Nebraska. Here, the ambient
    environment is characterized by moderate buoyancy (mainly driven by
    rich low-level moisture), strong bulk effective shear of around 60
    knots, and respectable low-level directional shear. As such, the
    Colorado storms may persist eastward into this favorable
    environment. The combination of wet-bulb freezing temperatures below
    10,000 feet and favorable shear environment suggest that large hail
    will be the predominant threat with this activity.

    Given the isolated spatial extent of the threat, a WW issuance may
    not be needed, but convective trends will continue to be monitored.

    ..Squitieri/Jirak/Guyer.. 06/19/2018

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

    ATTN...WFO...LBF...GLD...BOU...

    LAT...LON 41020249 41380230 41680179 41650105 41320050 40780025
    40190024 39750075 39860164 40220194 41020249



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