At least a dozen tornadoes touched down during the storms that raked the state on Wednesday and early Thursday, according to preliminary assessments by the National Weather Service. That’s the worst outbreak of twisters since last May. Gov. Sonny Perdue has declared a state of emergency in four counties hit by tornadoes and thunderstorms. The state will send help to Hancock, Jasper, Thomas and Warren counties to remove downed trees, clear blocked roads and clean debris from houses, Perdue said in a release. The state of emergency will last for 10 days.