1 death in Oklahoma, while 17 tornadoes were reported in 7 states

At least 17 tornadoes were reported in seven states overnight into Tuesday morning.

The tornadoes were reported in Iowa, Nebraska, Kansas, Oklahoma, Missouri, Tennessee and South Dakota.

The most destructive storm appeared to have occurred in Barnsdall, Oklahoma, north of Tulsa, where extensive damage was reported. One person was killed in Barnsdall, according to Osage County Sheriff Eddie Virden.

Fifteen people were treated for injuries at Ascension St. John Jane Phillips Medical Center in Bartlesville, about 20 miles south of Barnsdall.

In addition to tornadoes, 4 inches of hail, about the size of a softball, was also reported in Kansas.

A tornado watch had been issued for parts of Missouri – including St. Louis – and Illinois on Tuesday morning. That watch would be in effect until 8 a.m. local time.

The tornado watch in Arkansas was also extended until 5 a.m. local time.

NOAA’s Storm Prediction Center in Norman, Oklahoma, had issued the highest possible severe weather warning for multiple intense, long tornadoes Monday afternoon and evening.

Kenton Gewecke and Melissa Griffin of ABC News contributed to this report.

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