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Severe Storm Outlook Narrative (AC)
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000 ACUS11 KWNS 290140 SWOMCD SPC MCD 290139 MOZ000-IAZ000-NEZ000-290315- Mesoscale Discussion 1179 NWS Storm Prediction Center Norman OK 0839 PM CDT Wed Jun 28 2017 Areas affected...Southern IA...Northern MO Concerning...Tornado Watch 375... Valid 290139Z - 290315Z The severe weather threat for Tornado Watch 375 continues. SUMMARY...Severe threat remains bimodal across Tornado Watch 375 with the southern-most threat now concentrated along the IA/MO border. DISCUSSION...East-west MCS has evolved along the IA/MO border over the last few hours and this activity is only slowly sagging south across the southern-most portion of WW375. Short-range models suggest a veered LLJ will feed this activity and decoupling may actually encourage new development along the western flank of this MCS. If a sufficient cold pool can evolve the MCS may sag into Livingston/Linn/Macon Counties MO. These counties may be added to Tornado Watch 375 but the greatest severe risk is actually large hail and heavy rain. ..Darrow.. 06/29/2017 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LSX...DVN...DMX...EAX...OAX... LAT...LON 40689541 40849406 40529190 39879223 39999424 40069568 40689541
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