Mesoscale Discussion 1682 NWS Storm Prediction Center Norman OK 1120 PM CDT Sun Sep 06 2020 Areas affected...Lower MI Concerning...Severe Thunderstorm Watch 488... Valid 070420Z - 070615Z The severe weather threat for Severe Thunderstorm Watch 488 continues. SUMMARY...Clusters of strong storms will spread across the remainder of ww488 over the next several hours. Hail remains the primary risk. DISCUSSION...Back edge of a progressive short-wave trough is advancing across Lake MI. Several thunderstorm clusters have evolved ahead of this feature within a focused zone of low-level warm advection beneath a veered LLJ. While hail remains the primary risk with this activity, latest MRMS data suggests most hail cores are generally less than 1 inch. While storm inflow is from a more buoyant air mass upstream across lower Lake MI, convection will gradually spread east into a region that may become less supportive of intense updrafts capable of producing severe hail. ..Darrow.. 09/07/2020 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DTX...APX...GRR... LAT...LON 42788683 44358679 44908279 43328280 42788683Read more
from SPC Forecast Products http://www.spc.noaa.gov/products/md/md1682.html
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