A storm system that spawned two tornadoes Thursday morning in St. Helena and Tangipahoa parishes took down some trees and power lines but left no buildings damaged or people injured, according to the National Weather Service.

Frank Revitte, warning coordination meteorologist with the National Weather Service in Slidell, investigated the damage and said a severe thunderstorm came through the two parishes in the morning, spawning an EF-1 tornado about four miles east-southeast of Greensburg at a little before 6 a.m.

As the storm moved east, it produced another tornado about four to five miles away and crossed Interstate 55 south of the Tangipahoa exit a little after 6 a.m. I-55 had to be closed briefly as workers cleared debris from the storm.

Both tornados were rated as EF-1 on the Enhanced Fujita scale, which rates tornadoes on list of factors including the amount of damage left behind. The rating runs from weak to strong on a rating from EF-0 to EF-5.