>> the national weather service now confirming a tornado touched down in tulsa, oklahoma. the powerful storm causing extensive damage and leaving several people wounded, including two with life-threatening injuries. >> the national weather service confirmed it was an f-2 strength and that it hit at 1:25. we're talking about winds that are up to 135 miles per hour. there is significant damage by interstate 44 in some areas of midtown tulsa, southeast of downtown. thousands of people lost power and streets and businesses are closed. the roofs were torn off. buildings, trees and power poles were uprooted.