St. Francis Hospital spokeswoman Lauren Landwerlin says about 30 people were treated at the hospital's trauma center and three were admitted in "non-critical condition" after a tornado struck near midtown Tulsa early Sunday.
The figure of 30 injured is up from 13 initially reported taken by ambulance to hospitals. A city spokeswoman says many people were taken to hospitals by private vehicles.
No deaths are reported.
The city may have been fortunate because the tornado struck just after 1 a.m. Sunday and most stores and restaurants were closed in the shopping district.
The Associated Press contributed to this report.