Last Updated 11:21 a.m. GRANBURY, Texas At least six people were killed Wednesday evening as a spring tornado outbreak devastated parts of North Texas, destroying or damaging dozens of homes, injuring dozens of people and leaving hundreds homeless. At least 6 killed in Texas twisters The National Weather Service estimates there to have been at least 10 twisters in all, reports CBS Dallas station KTVT. The deadly twisters touched down just outside Fort Worth around eight o'clock last night, packing winds of up to 80 miles per hour. The violent spring storm scattered bodies, flattened homes and threw trailers onto cars. Some were found around houses," Deeds said, adding that the death toll may climb. Seven people remain unaccounted as of Thursday morning. This May 16, 2013 photo provided by Nichole Tomlin shows the backyard of her home in Granbury, Texas, and the rubble where Tomlin says used to be a neighborhood. / Nichole Tomlin/AP Photo Resident Elizabeth Tovar described the fist-sized hail that heralded the tornado's arrival, prompting her and her family to hide in their bathroom. We were all, like, hugging in the bathtub and that's when it started happening. I heard glass shattering and I knew my house was going," Tovar said, shaking her head. We looked up and . . . the whole ceiling was gone. The powerful storm crushed buildings as it tore through the area, leaving some as just piles of planks and rubble. Trees and debris were scattered across yards, fences flattened. Behind one house, a detached garage was stripped of most of its aluminum siding, the door caved in and the roof torn off. A tree behind the house was stripped of its branches and a vacant doublewide mobile home on an adjoining lot was torn apart. Daniel and Amanda Layne initially thought they were safe sheltering under their carport. But then "it started getting worse and worse," and the couple took shelter in their bathroom, Daniel Layne said. The windows and the cars are gone. Both our cars are messed up. I had a big shop. Ain't a piece of it left now," Layne said with a shrug. One woman, a mother of five, told KTVT she lost everything in an instant. "There's nothing left," she said. I mean, our neighborhood is gone, it's just gone. Lake Granbury Medical Center said more than three dozen patients received treatment, including 19 that were treated and released. Utility officials say about 20,000 homes and businesses lost electricity due to the storms. Dallas-based Oncor on Thursday had nearly 18,000 customers without power, most in the Dallas-Fort Worth area and farther south. United Cooperative Services reports more than 2,000 homes and businesses without electricity in a cluster of communities, including Granbury.