There are many natural disasters endangering the planet. Although the US represents a relatively vast area, one particular weather phenomenon stands above all others, which takes on a literal meaning when we speak about tornadoes.
More tornadoes are popping up east of the Mississippi
US tornadoes: Before and after satellite pictures show extent of destruction, US News
9 Dead, More Casualties Expected After Tornadoes Rip Through US Southeast
Five of the deadliest tornadoes in U.S. history
List of tornadoes by calendar day - Wikipedia
TRI-STATE TORNADO 1925 - Longest & Deadliest Tornado in U.S.
Electronic outoor sirens and early warning and emergency systems
Picking up the Pieces After the Tornado in Moore, Oklahoma - The Atlantic
Twisted tornado by Lava Lit
Every US State Ranked By Tornado Activity - Tornado State Tier
Why does the U.S. have so many tornadoes? - 47abc
Awesome tornodos - www.Tornadoshurricanes.edu
At least 26 dead as storm unleashes devastating tornadoes across the US
75 years ago, one of the state's most violent tornadoes hit Lacon
Deadly storms and tornadoes kill at least 32 people in several US