MD 1297 CONCERNING SEVERE THUNDERSTORM WATCH 389…390… FOR WESTERN/SOUTHERN NEBRASKA AND WESTERN KANSAS
Mesoscale Discussion 1297 NWS Storm Prediction Center Norman OK 1129 PM CDT Mon Jul 20 2020 Areas affected...Western/southern Nebraska and western Kansas Concerning...Severe Thunderstorm Watch 389...390... Valid 210429Z - 210600Z The severe weather threat for Severe Thunderstorm Watch 389, 390 continues. SUMMARY...Overall severe-weather potential continues to diminish in/near Severe Thunderstorm Watches 389/390, with a lingering risk mainly across northwest Kansas. Watch 389 will likely expire by/at 05Z. DISCUSSION...A linearly organized band of storms continues to settle south-southeastward across northwest Kansas, with the stronger updrafts embedded within the westernmost portion of the line just south of I-70 and Goodland/Colby areas as of 1015 pm MDT. Cloud tops have tended to gradually warm and the advancing cluster should continue to encounter increasing boundary layer inhibition and lesser buoyancy with southward extent. Thus, the severe-weather potential should continue to trend increasingly marginal over the next 1-2 hours, and an additional Watch issuance or extension is not expected. Farther north, additional upscale quasi-linear growth could occur with multiple clusters ongoing across south-central Nebraska. While a localized severe thunderstorm cannot be entirely ruled out, increasingly stable nocturnally/convectively influenced inflow should keep the severe potential limited. ..Guyer.. 07/21/2020 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...OAX...GID...LBF...DDC...GLD... LAT...LON 39300187 39610062 40559964 41359958 41989990 41459820 40519885 39239926 38720144 39300187
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