What Defines a "Particularly Dangerous Situation"?
A Particularly Dangerous Situation, or PSD, is a term normally used when long-lived, strong and violent tornadoes are possible. A PSD also can occur during a severe thunderstorm. Find out why derechos can be so dangerous.
Facts About Derechos
The National Weather Service offers an indepth view of derechos, including: how they are formed, its strength
and damage risks, as well as explains the different derecho types.
What is a Derecho?
Meteorology 101: Step into the Weather Channel classroom and learn what a derecho is, the history of past derechos and what to expect from a derecho.
Derecho: "The Land Hurricane"
Strong winds, torrentiall rain, thunder and lightning - just how similar are derechos to hurricanes?
Survival & Emergency Preparedness: Mid-Atlantic Derecho
Ten useful tips to be prepared not only for derechos, but for any type of violent weather.