SPC MD 1085

MD 1085 CONCERNING SEVERE THUNDERSTORM WATCH 310... FOR SOUTHERN IOWA AND FAR NORTHERN MISSOURI Mesoscale Discussion 1085 NWS Storm Prediction Center Norman OK 0633 AM CDT Thu Jun 11 2026 Areas affected...Southern Iowa and far northern Missouri Concerning...Severe Thunderstorm Watch 310... Valid 111133Z - 111300Z The severe weather threat for Severe Thunderstorm Watch 310 continues. SUMMARY...The threat for 60-80 mph winds will continue in southern Iowa. Brief tornadoes associated with the MCS will also be a concern. With discrete development ahead of the MCS possible, trends will need to be monitored for a potentially greater tornado threat. DISCUSSION...A compact MCS with a history of 60-80 mph winds and a couple of brief tornadoes continues east within southern Iowa. Ahead of this MCS, weak thunderstorm development has been noted in south-central Iowa. The primary concern this morning will continue to be severe/damaging winds as the downstream environment begins to further destabilize. A secondary concern that needs to be monitored is the potential for stronger discrete development ahead of the MCS near the surface boundary. The low-level jet core is expected to move into more of central/eastern Iowa this morning. This could lead to a greater tornado risk if discrete storms can form/mature. ..Wendt.. 06/11/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DVN...DMX...EAX...OAX... LAT...LON 40609549 41399531 41429306 41359184 41039154 40799159 40459197 40329344 40329369 40479512 40609549 MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN Read more