The National Weather Service is still assessing the wild weekend of severe weather that hit north-central Iowa, spawning at least two tornadoes and causing widespread damage. Meteorologist Rodney Donavan says the weekend’s violent storms were fired with a stationary front that lingered over north-central Iowa.Donavan says two big “supercell” storms went across Cerro Gordo, Worth, Winnebago, Floyd, and Mitchell counties Saturday night, causing what he calls “tornadic activity.” He says Iowa has not seen many tornadoes in the last few years, so we have to get used to them again.One twister reportedly touched down just east of Mason City. Donavan says it’s tough to predict what will lie ahead for the rest of the severe weather season.Strong winds also caused damage across the state Sunday afternoon and evening. Numerous trees and power lines were downed, with wind gusts topping out at 65-miles an hour. There are reports of cars and trucks being blown off the Avenue of the Saints, while wind gusts in the Klemme area last night blew down a barn with cattle trapped inside.