A new 3D Elevation Programme (3DEP), is the outcome of a partnership between USGS and other federal, state, local and private agencies in the United States, designed to respond to the growing needs for three-dimensional mapping data of the United States.
New technologies have sometimes had very harmful effects, but in many cases the early warning signs have been suppressed or ignored. The second volume of Late Lessons from Early Warnings published by the European Environment Agency (EEA) investigates specific cases where danger signals have gone unheeded, in some cases leading to deaths, illness and environmental destruction.
The April 27, 2011, tornado outbreak was the second-deadliest in U.S. history, and the deadliest since the Doppler Radar system has been used to warn communities. Alabama has been involved in six of the 10 deadliest tornado outbreaks in U.S. history.