(NBC News) – Dozens of counties across Texas and Oklahoma were under the most severe tornado warning Monday after a weekend full of twisters that tore roofs off houses and ripped power lines from the ground.
Most of Oklahoma, northwest Texas and the eastern Texas Panhandle should brace for numerous, intense, long-track tornadoes, hurricane-force winds and baseball-sized hail, the National Weather Service warned Monday afternoon.
The tornado watch for the Texas panhandle is in effect until 8 p.m.
The series of storms and extreme warnings fall on the sixth anniversary of the tornado which tore through the Oklahoma City suburb of Moore in 2013, killing 24 people and injuring 212 others.
The precautions also comes just a few day before the eighth anniversary of the tornado that devastated the town of Joplin, Missouri, in 2011. The Joplin tornado, which killed 158 people and injured more than 1,000 others, is deadliest since modern record keeping began in 1950 and is ranked seventh among the deadliest tornadoes in U.S. history, according to the National Weather Service.