The Latest on severe weather: Tornado hits small South Dakota town of Delmont, no deaths

Dozens of people gather to help with cleanup efforts at a farm that was severely damaged by a tornado Sunday, May 10, 2015, in Delmont, S.D. South Dakota was the center of weather extremes Sunday, with a tornado hitting the small town on the eastern side of the state and more than a foot of snow blanketing the Black Hills to the west. (AP Photo/Regina Garcia Cano) (The Associated Press)

A power pole leans along Fort Worth Avenue after a storm in Denton, Texas, Sunday, May 10, 2015. Several Great Plains and Midwest states were in the path of severe weather, including in North Texas, where the National Weather Service said a likely tornado damaged roofs and trees near Denton. (Richard W. Rodriguez/The Fort Worth Star-Telegram via AP) MAGS OUT; (FORT WORTH WEEKLY, 360 WEST); INTERNET OUT (The Associated Press)

11:15 a.m.

The National Weather Service has received reports of a tornado hitting a small southern South Dakota town.

Meteorologist Philip Schumacher at the service's Sioux Falls office says law enforcement officials said a tornado hit Delmont about 10:45 a.m. Sunday.

Delmont has about 200 residents and is about 90 miles southwest of Sioux Falls.

Schumacher said no deaths have been reported and it wasn't known whether there were injuries. He said a couple buildings have been damaged.

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11 a.m.

The National Weather Service has issued tornado watches in several Midwest and Great Plains states, running until 9 p.m. Sunday in many places.

Watches have been issued for north and central Texas, eastern Oklahoma, western Arkansas, western Iowa, eastern Nebraska and parts of Minnesota and South Dakota.