A southerly wind flow of very moist and unstable air fed a slow-moving thunderstorm complex. To the south of the storm complex, surface dew points were in the lower 70's and instability was quite high. An outflow boundary moved southward ahead of the storms, providing the lift necessary for new storms to develop. Isolated storms produced large hail. The more significant problem was locally very heavy rainfall as storms repeatedly moved over the same areas. Slightly over three inches of rain fell in an hour at the Cape Girardeau airport. Minor flooding occurred along the St. Francis River.

Thunderstorm Wind in CAPE GIRARDEAU, MISSOURI
From 26-MAY-16 11:30:00 to 26-MAY-16 11:30:00 (CST-6)
Location: GREEN COX
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were down across Highway NN near Highway 25.

Flash Flood in CAPE GIRARDEAU, MISSOURI
From 26-MAY-16 11:35:00 to 26-MAY-16 14:00:00 (CST-6)
Location: CAPE GIRARDEAU
Flood cause: Heavy Rain
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread flash flooding of streets occurred in the city of Cape Girardeau. Emergency crews responded to at least one water rescue. The Cape Girardeau Fire Department reported there were several roads with 18 inches to three feet of water on them, including roads that normally do not flood. Police advised residents to stay off the streets. At Southeast Missouri State University, some campus buildings experienced flooding issues. Power was out in a campus building due to the water. At the Cape Girardeau airport, the automated rain gage measured 1.65 inches in 30 minutes. Slightly over three inches fell in one hour. Widespread street flooding also occurred in Delta. In the southwest corner of the county, water was over Highway NN just off Highway 25. Near Gordonville, County Road 226 was closed just west of Highway 25 due to a pipe washed out from under the road. Water was over some other county roads.

Flash Flood in SCOTT, MISSOURI
From 26-MAY-16 12:14:00 to 26-MAY-16 16:30:00 (CST-6)
Location: SCOTT CITY
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

At least one water rescue was conducted along Route A between Benton and Hamburg. Numerous roads were underwater. Water was at least one foot deep over many roads in Scott City, including main streets. Portions of County Roads 210 and 219 were washed away just east of Rockview. A portion of a culvert was washed away on County Road 214 between Hamburg and Kelso. About ten roads were closed or impassable in Sikeston due to high water. The Sikeston Department of Public Safety asked people to stay off the roads in Sikeston, if possible. Cars became submerged in flooded areas. Two inches of rain fell in 45 minutes at Kelso.

Hail in CAPE GIRARDEAU, MISSOURI
From 26-MAY-16 11:22:00 to 26-MAY-16 11:22:00 (CST-6)
Location: DELTA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flood in WAYNE, MISSOURI
From 27-MAY-16 20:00:00 to 28-MAY-16 13:00:00 (CST-6)
Location: SILVA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Minor flooding occurred along the St. Francis River. Some low-lying fields and woodlands near the river were underwater.

Flash Flood in WAYNE, MISSOURI
From 26-MAY-16 12:37:00 to 26-MAY-16 15:00:00 (CST-6)
Location: CASCADE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Low water crossings were flooded in northern Wayne County.