WAUPACA, Wis. (AP) — Sheriff’s officials say a mother saved her three young children from injury as a tornado hit their house in Waupaca County.

Authorities say the woman heard the wind pick up about 5 p.m. Monday and moved two of her children, ages 4 and 7, to the bottom of a stairway. She ran to an upstairs bedroom where her 1-year-old daughter was sleeping, but couldn’t get the door open as the tornado bore down. The glass had already blown out of the bedroom window.

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The sheriff’s department says the mother eventually got the door open, grabbed the girl and joined the two other children at the bottom of the stairway. All escaped serious injury.

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The tornado took off the roof of the house and caused other damage.

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