Much of the state, including Oklahoma City, Stillwater, Ardmore, and Ada, is expected to experience a moderate risk of tornadoes, which is the second-highest severity. Storms could produce softball-sized hail and wind speeds could top 80 mph,

Oklahoma may see an outbreak of severe storms with a chance of tornadoes and hail on Monday after multiple twisters touched down over the weekend.

Breaking: Sequoya Quinton reports live sighting of a large tornado near Kiowa power plant. Caution advised in the area. Live updates.

It's been 12 years since the historic, deadly Moore, Oklahoma, EF5 tornado. New research has given light as to why no U.S. tornado has achieved an EF5 rating since.

Tornadoes were reported in Nebraska and Oklahoma, and more than 150,000 customers had no power early Tuesday. Forecasters warned of the potential for hail and flash flooding.

Storms in Arkansas and Oklahoma, with at least two confirmed tornadoes, caused over 34,000 power outages and damage on Monday. Here are photos of the aftermath.

Severe storms are expected to thunder across Oklahoma this weekend and into early next week. Here's what to know about weather alerts and more.

TULSA, OKLA (KTUL) — Severe weather hit a number of counties across Oklahoma Monday afternoon, bringing hail, lightning, and tornadoes. Multiple areas saw trees and power poles downed, along with damage from high winds. The National Weather Service issued a number of tornado watches and tornado warnings for Oklahoma counties throughout Monday.

Millions of people in the Midwest and Great Plains are in the path of numerous severe thunderstorms expected on Monday. Kansas City is expecting winds up to 50 MPH and half-dollar-sized hail that could damage roofs or cars.