21.   The engineers began their research after a tornado hit Lubbock several years ago.

22.   The Ruiz brothers had run from their trailer to the nearby home of the Moehrings when the tornado hit.

23.   The tornado hit the house hard.

24.   The tornado hit their home, and with a vibrating roar sheared away everything above their heads.

25.   Then the tornado hits.

26.   When the tornado hit, hundreds of the conventioneers were caught in two large outdoor tents, where vendors were exhibiting their goods.

27.   When the tornado finally hit, Tommy saw debris from his shattering house flying overhead.

28.   A magazine journalist who had taken film to be developed at the pharmacy described the scene as the tornado hit the store.

29.   A tornado hit northwest of Austin Thursday afternoon, tearing roofs and breaking windows at about a dozen homes.

30.   A tornado hit this central Kansas town Saturday night, ripping the roof off a hospital just after it had been evacuated and damaging several blocks of homes.