As residents in hard-hit Joplin, Missouri, try to recover from one of the deadliest U.S. tornadoes on record, the National Weather Service warns the danger might not be over.
The weather service warns there was a 45% chance of another tornado outbreak - with the peak time between 4 p.m. and midnight Tuesday - over a wide swath, including parts of Texas, Oklahoma, Arkansas, Nebraska and Missouri, including Joplin.
Monday night, the weather service said, "A large cluster of thunderstorms is currently affecting portions of Missouri."
Earlier Monday, an armada of government agencies had converged on the Joplin area to assess the damage and stage the difficult days ahead.
As weather conditions deteriorated, agency workers sifted through rubble searching for survivors. The death toll - 116 as of Monday night - matched the record number of dead in a twister that struck Flint, Michigan, on June 8, 1953.