BEATRICE - A National Weather Service survey team has determined that two brief tornado touchdowns happened on the evening of May 21st over rural southeast Nebraska.

Only minor tree damage was observed in both touchdowns and the tornadoes were judged to be EF-Zero twisters, with estimated wind speeds of 60-65 mph. That's the weakest classification.

One of the tornadoes in southeast Nebraska touched down along the Richardson-Nemaha County line, north of Stella. The second touchdown occurred near 721st Road in Nemaha County, a mile north of the first touchdown.

Both twisters were on the ground for a brief time.

The more substantial tornado activity was confined to south of the Nebraska-Kansas state line.

Trees downed near Mayetta (NWS, Topeka)

Tuesday afternoon, a series of low-topped supercell thunderstorms spawned at least half a dozen tornadoes across northeastern Kansas. The National Weather Service Office in Topeka reports the tornadoes stayed mostly in rural locations, but one did swipe the western side of the town of Mayetta with EF-1 damage.

Home Damaged in Mayetta (NWS Topeka)

Other tornadoes formed in Dickinson, Geary, Shawnee, and Jackson counties.

The two strongest tornadoes included a twister rated EF-3, which came down 3.2 miles southeast of Bern, Kansas in Nemaha County. It was on the ground for nearly six miles with estimated wind speeds of up to 140 miles-per-hour. One home had severe damage and there was damage to power lines. The twister lifted about 200 yards south of the Nebraska-Kansas line.

House Near Bern, Kansas (NWS Topeka)

An EF-2 tornado with wind speeds of up to 115 miles-per-hour touched down a half-mile southwest of Mayetta, Kansas. Several structures, including one home were damaged along the west side of Mayetta. The twister's path was about 17 miles long.

Other tornadoes in northeast Kansas caused mainly tree and power line damage.