Highways in parts of Oklahoma and Arkansas saw highway closures due to flooding. They were identified as 27-year-old Officer Nicholas Reyna and 39-year-old Lieutenant/Paramedic Eric Hill. A second firefighter was struck and was in critical condition at a hospital.
Lubbock Police Chief Floyd Mitchell called it an "extremely tragic day" for the city.
Another person died in Dallas, Texas, on Friday night when a auto flipped into a creek as severe thunderstorms passed through. Furthermore, lightning from Friday's stormy weather was believed to be responsible for two house fires in the northern Texas cities of Burleson and Mansfield.
A man drowned in Oklahoma and the storms even touched the Midwest, with at least one death on an icy highway in Iowa. Randall Hyatt, 58, of Wardville, was overwhelmed by rushing water while getting out of his stalled truck.
In Alabama, three people were confirmed killed near Carrollton in Pickens County, the national weather service in Birmingham tweeted.
Following a tornado that brought 100-mph winds, rescue crews arrived at a home Saturday and found Larry Hadnot Jr., 44, "trapped by a tree that had fallen across a home", Nacogdoches County Judge Greg Sowell said in a statement. It killed an elderly couple as their mobile home was blown off its foundation and completely destroyed. In Caddo parish, a man was killed when a tree fell on his home.
More than 139,000 people were without power in Alabama, according to Alabama Power.
Roughly 22,919 people are without power in Louisiana, per poweroutage.us as of 4:17 p.m ET. About 12,000 customers were still without power Sunday afternoon, NYSEG said. Outages were reported from Texas to MI. A Winter Weather Advisory was issued for northern IL and the Chicago area early Saturday morning, and would be in effect until 3 p.m. on Sunday. Footage taken by a drone showed smashed buildings, a large vehicle flipped on its side, toppled trees as well as debris scattered over a large area. Sunday reports said people have died in five different states due to tornadoes, icy weather and flooding.
On Alabama's Gulf Coast, Baldwin County canceled school activities including sporting events for Saturday.
Hurricane-force wind gusts, golf-ball-sized hail and 2 to 5 inches (5-13 cm) of snow fell on Friday night and early Saturday as storms pushed from Texas through the Southeast and Great Lakes into ME, the National Weather Service (NWS) said.
Storms also unleashed downpours causing widespread flash flooding.
The national Storm Prediction Center said more than 18 million people in Louisiana, Arkansas, Texas and Oklahoma were at an enhanced risk of storms, including from strong tornadoes, flooding rains and wind gusts that could exceed 80mph, the speed of a category one hurricane.