KNOXVILLE, Tenn. (WVLT) -- The National Weather Service office in Morristown has two teams out assessing damage, the day after a line of storms devastated the region.

The National Weather Service says an EF2 struck the Camp Creek area of Greene County, just before 11 o'clock Wednesday night. They say at least 10 people were killed, and 33 injured when wind speeds reached 115 miles per hour.

Tim Troutman said the agency has determined an EF4 tornado struck Hamilton Co. on Wednesday. The half-mile wide twister is blamed for the deaths of eight people there.

"Nearly a half mile wide damage path of this large tornado, it completely devastated that we've seen so far 2 homes and basically just about wiped the locations clean," he said.

Troutman said he started assessing damage in Bradley County Tennessee Wednesday, only to be interrupted by continuous storms. He is now covering several counties in the Southeastern part of Tennessee, including the Chattanooga area.

He said, "Region wide, we've had widespread tornado damage."

Meteorologist in Charge George Mathews headed Northeast. The National Weather Service in Morristown covers all of East Tennessee and Southwest Virginia. Mathews is first assessing damage Thursday in Washington County, Virginia where they have received reports from emergency personnel saying there are possibly hundreds missing.

Troutman says the NWS will be assessing damage for days. They are comparing this storm event to the Tornado Outbreak in April 1974, when 148 tornadoes killed more than 300 in several states.

"It's definitely rivaling the April 3rd 1974 super tornado outbreak, and we fully expect to in the end probably see more tornado reports, and there is an extreme amount of damage over a large area," he said.

Troutman explained they believe there were multiple touchdowns and lifts out of tornadoes, and if there is a certain number of miles between the lifts then it is considered a new tornado. With that in mind, he estimates 20 to 30 tornadoes touched down Wednesday in East Tennessee to Southeast Virginia.

Volunteer TV with the latest on the NWS's on-going assessments starting First at 4:00.

If you have any video of tornadoes or funnel clouds in this area, this would be very helpful for the National Weather Service. Please post it on Volzeye.com or Facebook.com/VolunteerTV so WVLT can assist the NWS in their efforts.