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Photos from viewers in Sapulpa, Broken Arrow, Claremore, and Skiatook show widespread wind damage and downed power lines after severe storms.

OG&E rushes to restore power across Oklahoma after severe weekend storms—live updates on efforts and safety guidelines.

Storm-chasers Matt Michell and Becky Patel had an engagement to remember after Michell was captured in photos and videos getting down on one knee and proposing to Patel in front of a tornado in Oklahoma.

Severe weather struck overnight Friday in Oklahoma and fired up again Saturday evening. The same slow-moving storm system is expected to continue affecting Oklahoma throughout the weekend.

The National Weather Service has confirmed several EF4-strength tornadoes in outbreaks of severe weather this month, the most since 1997.

Nearly 60,000 Oklahomans are without power Saturday morning after severe storms caused widespread outages across Tulsa and the OKC metro.

A drone captured new video of the vortex of an Oklahoma tornado. According to the drone storm-chasing project, "OTUS", this is a perspective no one has seen before. Louis Tucker, the drone's pilot, spoke with NBC News' Gadi Schwartz about the data it is collecting and the future of storm-chasing.