1975 Omaha tornado outbreak
Three people were killed and 133 reported injured. One of the fatalities was thrown by the tornado from her home to a backyard four or five houses away. Debris was found miles away. Over 4,000 buildings were damaged and 287 were destroyed. In terms of damage, it was the costliest tornado in American history to that date, with damages costing at least $250 million to $300 million (around $1.7 billion in 2015 dollars), and insurance costs estimated at up to $1.1 billion (in 1975). It was the third-costliest tornado, behind the Oklahoma City-area F5 tornado on May 3, 1999, and the Wichita Falls, Texas, tornadoes on April 10, 1979, until the Joplin, Missouri EF5 tornado on May 22, 2011. It is now currently the seventh-costliest tornado on record.
1953 Waco tornado outbreak
Few of the buildings in downtown Waco were constructed sturdily enough to withstand the winds, and they collapsed almost immediately. Newer buildings with steel reinforcement, including the 22-story Amicable office building (now called the ALICO Building), weathered the storm. The Dr Pepper bottling plant, today the Dr Pepper Museum, also remained standing but sustained damage. Bricks from the collapsed structures piled up in the street to a depth of . Some survivors were trapped under rubble for 14 or more hours; numerous bodies remained submerged beneath piles of rubble and for many days were unaccounted for. In all, 114 deaths occurred in the Waco area, with 597 injured and over $41 million (1953 USD) in property damage. The tornado destroyed 196 businesses and factories. 217 others sustained major damage and 179 sustained lesser damages. 150 homes were wrecked, 250 sustained major damage, and 450 sustained lesser damages. The First United Methodist Church was severely damaged. Over 2,000 cars sustained at least some damage. Over half the dead—61—were in a single city block bounded by 4th and 5th streets and Austin and Franklin avenues.
Following the Waco tornado, attempts to organize disaster relief were stymied by poor organization. Local residents had not expected the tornado and had assumed that the area's geography safeguarded Waco from tornadoes. Initially, the tornado also severed communications between downtown Waco and outlying areas, so assistance was slow to arrive. The chaotic relief efforts eventually spurred greater coordination between civilians and local governments, leading to the development of civil defense. Notably, the Waco event was one of the first instances that proved the effectiveness of radar in tracking tornadogenesis; coincidentally, another such case occurred later in the same year. Posthumous study of the tornado that struck Worcester, Massachusetts, on June 9 revealed that, as at Waco, local radar detected the hook echo that signified the tornado. Researchers concluded that improved communications, coupled with the formation of radar coverage, could lead to accurate tornado warnings, thereby reducing loss of life in future storms. This task proved especially important following the devastating loss of life at Waco and Worcester, along with the June 8 catastrophe at Flint, Michigan, in the same year. The state of Texas supported the implementation of 20 radar facilities, each with a radius, that proved successful in reducing death tolls in later tornadoes. The system was known as the Texas Radar Tornado Warning Network and also included communications between weather officials, storm spotters, and local officials. Thus the Waco tornado helped catalyze development of a nationwide severe weather warning system.