The following events were reported: Flash Flood, Hail, Thunderstorm Wind, Tornado. These occurred near station USW00003947, approximately 29.9666 km away, between 2017-03-06 18:29:00 and 2017-03-06 21:41:00. The events included records with hailstones measuring 26.1475 inches.The events resulted in 1 injuries and 0 fatalities. No significant property or crop damage was reported. Episode Narrative: On the evening of March 6, 2017 a line of severe thunderstorms formed, then moved into eastern Kansas and western and central Missouri. Ahead of and along this line of storms supercells formed and produced large hail, damaging winds, and several tornadoes. Officially there were 11 tornadoes recorded in the EAX portion of Missouri, with a 12th tornado recorded in Leawood, Kansas, on the Kansas side of the EAX CWA. The most notable of the tornadoes were the EF-2 and EF-3 tornadoes that impacted Smithville, Missouri and Oak Grove, Missouri respectively. According to news reports there were 12 injuries associated with the Oak Grove tornado, but despite the widespread significant damage there were no fatalities. As the line of storms moved eastward several embedded supercells and mesovortices produced several more tornadoes across northern and central Missouri. By the end of the event, officially there were four EF-1 tornadoes, one EF-2 tornado (Smithville, MO), one EF-3 (Oak Grove, MO), and five EF-0 tornadoes in Missouri. The Leawood Kansas tornado was rated EF-0 as well, rounding out the 12 confirmed tornadoes in the EAX CWA from that evening. On the evening of March 6, 2017 a line of severe thunderstorms formed, then moved into eastern Kansas and western and central Missouri. Event Narrative: This tornado is a continuation of the tornado that moved out of Clay County after impacting Smithville and Smithville Lake on the night of March 6. The tornado reached its strongest rating and its widest size as it crossed out of Clay County into Clinton County while it crossed Smithville Lake. Like in Clay County several residences were impacted in Clinton County by this large tornado that reached 1000 yards wide at its largest point. The worst of the damage occurred just east of Smithville lake where numerous structures were completely destroyed, but like on the west side of the lake the worst of the damage seemed to occur where garage doors became a point of entry for 100+ mph winds and lifted the entire structure off of its foundation. The tornado continued across the rural portions of Clinton County, remaining at least EF-2 until it approached Lathrop, where it became smaller and didn't create as much damage. A few structures on the south end of Lathrop were damaged. The last damage point appeared to be just west of Interstate 35, where a few metal outbuildings had some metal peeled off, but no more damage was located east of I-35. The tornado dissipated between Lathrop and Interstate 35. ASOS at Kansas City International Airport reported 58 knot winds (67 mph) for 8 minutes. This report is all encompassing of numerous severe wind reports from across downtown Kansas City. Numerous trees were blown down and several buildings sustained more than cosmetic damage as a line of thunderstorms moved through the city. Several images of large structures with major damage to roofs and facades were seen on local news from across the metro. Winds near 70 mph were recorded at nearby Kansas City International Airport, but the damage around downtown Kansas City would suggest locally stronger wind gusts, perhaps approaching 80 mph. Despite the widespread damage there were no injuries reported with this activity in the immediate downtown portions of Kansas City. Trained spotter at the Lake City Ammo Plant reported golf ball sized hail. On the evening of March 6, a supercell ahead of a squall line produced a strong tornado that impacted the city of Smithville near Smithville Lake. The tornado formed just west of HWY 169 and did some minor damage to a neighborhood just east of HWY 169. More significant damage was done to a neighborhood along Route W, just east of HWY 169 before the tornado crossed Smithville Lake into Clinton County. At this neighborhood near the intersection of HWY 169 and Route W several houses were completely destroyed with roofs gone, but most external and interior walls still standing. There were also a couple residences that had compete failure of the structure as wind entered through garage doors and uplifted the entire house off the foundation. EF-2 rating was obtained mainly due to lack of structural failure of a majority of the residences. The house that was lifted off the foundation appeared to be a sliding house with winds entering in through a garage door. Surrounding residences had major damage, but not complete failure of structure. Despite the widespread damage from this tornado there were no injuries reported. This tornado crossed Route W and started across Smithville Lake, where it crossed into Clinton County. AWOS station KGPH recorded a 59 knot (68 mph) wind gust as a line of thunderstorms moved through that area. House damaged at HWY J and McComas Lane near Plattsburg. Half dollar sized hail was reported at 50th St and Stateline Road in Jackson County Missouri. A narrow swath of wind, perhaps consistent with a mesovortex did some damage to portions of Grandview. Power lines were reported down across the city and several structures had some minor roof and siding damage. Straight line thunderstorm wind was determined to the be the cause due to the unidirectional layout of the debris field. An estimated 60 mph wind gust occurred near Platte Woods. After a round of very heavy rain moved through the area there was some isolated flash flooding on the streets in and around Kansas City. One such instance was high water on northbound I-35 at Pennway Street, which closed part of the interstate for a brief period. Reports of power lines down at West and 11th Street. Reports of power lines down at 70th and Montrose Avenue. KLXT ASOS in Lee's Summit recorded a 56 knot (64 mph) wind gust with a line of storms that moved through that area. Power lines down on HWY 33 just south of Lathrop. An injury accident occurred on I-29 near Kansas City International Airport when a tractor trailer rig overturned due to high winds. Estimated 60 mph winds with trailers being moved near the Smithville Hospital. Could be associated with rear flank downdraft from the nearby supercell producing the Smithville Tornado.