Mesoscale Discussion 1179 NWS Storm Prediction Center Norman OK 0901 PM CDT Fri Jul 10 2020 Areas affected...North-Central SD Concerning...Severe Thunderstorm Watch 352... Valid 110201Z - 110330Z The severe weather threat for Severe Thunderstorm Watch 352 continues. SUMMARY...Isolated severe thunderstorms will linger across north-central South Dakota the next few hours. DISCUSSION...Northern Plains short-wave trough is topping the western US upper ridge and is now beginning to dig southeast across the Dakotas. Exit region of a mid-level jet appears partly responsible for ongoing convection across this region. A few severe storms with hail have progressed along the ND/SD border E-NE of MBG. This activity is turning more southerly as low-level convergence is refocusing farther south in advance of the short wave. Latest radar data suggests this convection will move along a weak boundary that is oriented across Edmunds into northern Spink County. While these storms will likely exit the eastern edge of ww352, it's not entirely clear how far east these storms will remain severe. For these reasons a new ww is not currently expected. ..Darrow.. 07/11/2020 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...ABR...BIS... LAT...LON 46189927 44869810 44429928 45530037 46189927Read more
from SPC Forecast Products http://www.spc.noaa.gov/products/md/md1179.html
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