BLENCOE, Iowa -- Frightened Boy Scouts huddled in a shelter as a tornado tore through their western Iowa campground, killing four teens and injuring 48 others who had little warning of the approaching twister.
Tornadoes also raked Kansas on Wednesday, killing at least two people, destroying much of the small town of Chapman and causing extensive damage on the Kansas State University campus.
Iowa rescue workers cut through downed branches and dug through debris amid rain and lightning Wednesday night to reach the camp where the 93 boys, ages 13 to 18, and 25 staff members were attending a weeklong leadership training camp.
The tornado killed three 13-year-olds and one 14-year-old, said Lloyd Roitstein, an executive with the Mid America Council of the Boy Scouts of America. He did not release the names of the victims.
Roitstein said a tornado siren went off at the camp, but the scouts had already taken cover before the siren sounded.
The boys had been in two groups when the storm hit the Little Sioux Scout Ranch in the remote Loess Hills. One group managed to take shelter, while the other was out hiking.
At least 42 of the injured remained hospitalized Thursday morning, with everything from cuts and bruises to major head trauma, said Gene Meyer, Iowa's public safety commissioner. At least four of the injured were airlifted from the camp, he said, refusing to elaborate on their conditions or identify the dead.
"Our thoughts and prayers are with the victims and the families of the victims," Gov. Chet Culver said. "We continue to do everything we can to make sure those injured are going to recover."
All the scouts and staff were accounted for, Meyer said, adding that searchers were making another pass through the grounds to make sure no one else was injured. The camp was destroyed.
Thomas White, a scout supervisor, said he dug through the wreckage of a collapsed fireplace to reach victims in a building where many scouts were seeking shelter when the twister struck at 6:35 p.m.
"A bunch of us got together and started undoing the rubble from the fireplace and stuff and waiting for the first responders," White told KMTV in Omaha, Neb. "They were under the tables and stuff and on their knees, but they had no chance."
The nearest tornado siren, in nearby Blencoe, sounded only briefly after the storm cut power to the town, said Russ Lawrenson of the Mondamin Fire Department.
Taylor Willoughby, 13, said several scouts were getting ready to watch a movie when someone screamed that there was a tornado. Everyone hunkered down, he said, and windows shattered.
"It sounded like a jet that was flying by really close," Taylor told NBC's "Today" on Thursday. "I was hoping that we all made it out OK. I was afraid for my life."
Ethan Hession, also 13, said he crawled under a table with his friend.
"I just remember looking over at my friend, and all of a sudden he just says to me, `Dear God, save us,'" he told "Today." "Then I just closed my eyes and all of a sudden it's (the tornado) gone."
Ethan said the scouts' first-aid training immediately compelled them to act.
"We knew that we need to place tourniquets on wounds that were bleeding too much. We knew we need to apply pressure and gauze. We had first-aid kits, we had everything," he said.
Ethan said one staff member took off his shirt and put it on someone who was bleeding to apply pressure and gauze. Other scouts started digging people out of the rubble, he said.
At a news conference Thursday, Culver praised the scouts for "taking care of each other" as emergency workers from several state and local agencies cut through debris to reach the camp.
Roitstein reminded reporters at the news conference that the Boy Scouts motto is "Be Prepared."
"Last night, the agencies and the scouts were prepared," he said. "They knew what to do they knew where to go and they prepared well."
The injured were taken to Burgess Health Center in Onawa, Alegent Health Clinic in Missouri Valley and Creighton University Medical Center in Omaha.
Burgess spokeswoman Beth Frangedakis said 19 victims arrived at the hospital around 8:30 p.m. They included children ages 2 months to 15 years, plus three adults.
Frangedakis said four were admitted to the hospital, one was taken by helicopter to Mercy Medical Center in Sioux City, Iowa, and the others were released. She wouldn't release the nature of the victims' injuries.
David Hunt, chairman of the Mid-America Boy Scout Council's Goldenrod District, which covers several eastern Nebraska counties, said he believed the boys were from eastern Nebraska and western Iowa.
The 1,800-acre ranch about 40 miles north of Omaha includes hiking trails through narrow valleys and over steep hills, a 15-acre lake and a rifle range.
The tornado touched down as Iowa's eastern half grappled with flooding in several cities. The storm threatened to stretch Iowa's emergency response teams even further.
Iowa Homeland Security spokeswoman Julie Tack said officials were confident the state's emergency response teams could handle the crisis because western Iowa had been largely unaffected by the recent flooding.
Along the Mississippi River in Missouri and Illinois, the National Weather Service was predicting the worst flooding in 15 years. Outlying areas could be inundated, but most of the towns are protected by levees and many low-lying property owners were bought out after massive flooding in 1993, officials said.
Meanwhile, a line of tornadoes cut a diagonal swath across Kansas, causing widespread damage.
Chapman, a Dickinson County town of about 1,400, appeared to be hardest hit. Sharon Watson, spokeswoman for the Kansas Adjutant General's Department, said more than 60 homes were destroyed and buildings were damaged. All three of the town's schools were damaged, and the high school gymnasium lost part of its roof.
Watson said one victim was found in a yard in Chapman. Homman said three people were critically injured and taken to a hospital. Geary Community Hospital in Junction City.
Electricity was out across town, and Homman said the search continued for other possible victims. "We're still going through methodically one residence at a time," he said.
The other Kansas victim was found outside a mobile home in the Jackson County town of Soldier, Chapman said.
The tornado that struck Kansas State University's campus in Manhattan destroyed a wind erosion laboratory and heavily damaged a fraternity house. Debris littered the campus, and classes were cancelled, but the university reported no injuries.
Associated Press writers Henry C. Jackson in Des Moines, Iowa; Anna Jo Bratton in Onawa, Iowa; and John Hanna in Chapman, Kan., contributed to this report.