Straight-line winds tore part of the roof off the Northeastern Health System hospital in Sallisaw on Tuesday.
Our Oklahoma Weather Experts say winds just above the surface topped nearly 80 miles per hour on the radar.
Residents say the weather started moving in around 4:30 p.m. on Tuesday.
Three patients had to be moved to other hospitals. The Sallisaw city manager says no one was hurt.
Several homes in the area also have tree and roof damage, and several people are currently without power.
The Sequoyah County Emergency Manager says the priority right now is getting relief to the hospital.
After the storm pulled part of the roof off, leaders had to lay out sandbags after another round of rain moved through tonight.
One man who lives across the street from the hospital said he's neve