Mesoscale Discussion 1065 NWS Storm Prediction Center Norman OK 1046 PM CDT Tue Jun 30 2020 Areas affected...Eastern NE...Western IA Concerning...Severe potential...Watch possible Valid 010346Z - 010515Z Probability of Watch Issuance...60 percent SUMMARY...Severe threat is increasing across eastern NE. Some consideration is being given to a new ww downstream. DISCUSSION...Southern influence of strong short-wave trough is glancing portions of eastern NE late this evening. Convection along the front has gradually increased and a well-developed squall line currently extends from Madison County - Hamilton County. This line is moving east at roughly 20-25kt and should exit ww320 after 06z. Weak warm advection will continue across the mid-MO Valley tonight, though shear is not particularly strong, a reservoir of strong instability resides just downstream. New ww is being considered. ..Darrow.. 07/01/2020 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...EAX...FSD...OAX...GID... LAT...LON 40479748 42349701 42489600 41079540 40239568 40479748Read more
from SPC Forecast Products http://www.spc.noaa.gov/products/md/md1065.html
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