A man and a girl were killed and at least 22 people were injured yesterday when a severe storm blew down a circus tent in northern New Hampshire, officials say. The accident happened around 5:30pm as the first of two scheduled Walker Brothers Circus shows was getting underway at the Lancaster fairgrounds, about 90 miles north of the state capital in Concord. About 100 people were in the tent when it collapsed, the state fire marshal says. Both people killed were spectators. The collapse comes a day after one man died and more than a dozen were injured when a tent blew off its moorings and fell on some of the crowd as a storm hit the Prairie Fest celebration in a Chicago suburb. (More New Hampshire stories.)