The National Weather Service Alabama

Investigators with the National Weather Service will spend today working to establish the intensity of tornadoes that hit the southern U.S. Unconfirmed twisters in Alabama hit northwest of Tuscaloosa and southeast of the state capitol of Montgomery. One storm near Birmingham picked up a school bus and dropped it on a local high school. Violent weather in Georgia flipped a gas station onto its roof. Roads remain impassable due to downed trees and power lines

The threat of tornadoes moved east into the Mississippi Valley and Deep South on Saturday, a day after a massive storm system moving across the country unleashed winds that damaged buildings, whipped up dust storms that caused deadly crashes and fanned more than 100 wildfires in several central states. Alabama is under what forecasters called a rare “level 5” storm alert.

Governor Kay Ivey is declaring a state of emergency in all sixty seven counties in Alabama. A sweeping storm system moving across the U.S. threatens to bring tornadoes, blizzards and possibly wildfires to different regions of the country. The National Weather Service says an outbreak of severe storms could spawn tornadoes over the weekend.

As icy temperatures and arctic air continue to hit Alabama, warming stations are keeping their doors open to help shelter residence from the cold. Stations are open in Mobile, Birmingham and Huntsville. That's also the case for Tuscaloosa, where the county's Emergency Management Agency is asking for donations to help those in need.

Hurricane Preparedness Week takes place May 5-11 in an effort to inform and equip people in the Southeast to be better prepared for the threat of a hurricane.

March officially begins the spring severe weather season in Alabama. This is the most active time for tornadoes in the state. Primary tornado season is early March through May, with the greatest number of tornadoes occurring in the month of April.

Strong storms are bringing the threat of tornadoes to much of Alabama. The National Weather Service says there's a marginal threat of twisters for areas…