Severe winds, flooding, and a brief tornado occurred from multiple periods of thunderstorms from late afternoon on this Sunday evening into the nighttime hours. From 5 to 6 PM CST, thunderstorms moving from northwest Kansas into south central Nebraska clipped northern Phillips county. Anvil rain from thunderstorms over central Kansas began spreading into Rooks, Osborne, and Mitchell counties around 5 PM CST as well. This rain overspread all of north central Kansas over the following couple hours. Around 7 PM CST, the back edge of this rain began progressing across Rooks and Osborne counties. As this occurred, a wake low developed producing damaging winds in some locations. Numerous trees limbs were snapped in Plainville and these damaging winds extended all the way to Osborne where trees were damaged there as well. An unofficial home weather station measured a wind gust of 70 MPH in eastern Rooks county. As this rain exited north central Kansas, more scattered thunderstorms developed near Interstate 70 and moved northeast into the area. Just after midnight, a brief EF-0 tornado touched down near Tipton and damaged a residence and some nearby trees and power poles. Shortly thereafter, the same narrow line of storms produced a wind gust of 59 mph at an unofficial station over south central Mitchell county. Meanwhile, a mesoscale convective system had developed over southwest Kansas. The northern portion of this MCS crossed north central Kansas between 11 PM and 2 AM. While no severe storms occurred, more heavy rain fell over northern Phillips county, where heavy rain had occurred from earlier thunderstorms. Repeated episodes of heavy rain resulted in a swath of 2.5 to nearly 5 inches from northwest Kansas into south central Nebraska. This swath of rain clipped northern Phillips county and fell directly along the basin of Prairie Dog Creek. 4.90 inches of rain fell in 12 hours at Long Island.
At sunrise, a stationary front extended from the lower Great Lakes across northern Kansas to low pressure near Pueblo, Colorado. During the afternoon, this front moved into Nebraska as a warm front. The upper-level flow was highly-amplified with a deep trough over the Western U.S., and a subtropical high over Florida. Kansas was just west of a ridge that extended from Arkansas to Montana. Before rain began falling, temperatures were in the 70s with dewpoints in the 60s. Mid-level lapse rates were 7.0-7.5 C/km, resulting in MLCAPE around 2000 J/kg. Deep layer shear was initially 30-35 kt, but increased to 60 kt by midnight. MUCAPE was still around 1500 J/kg.