what is the common precursor of natural disasters
Answers
A precursor event is a lesser event that normally occurs before a larger event, as as a tropical depression that develops into a tropical storm before becoming a hurricane, or a series of tiny earthquakes in the vicinity of a volcano that signal an impending eruption.
A tropical cyclone is a fast rotating storm system with a low-pressure core, a closed low-level atmospheric circulation, high winds, and a spiral arrangement of thunderstorms causing heavy rain and/or squalls. A tropical cyclone is known by several names depending on its location and severity, such as hurricane tropical storm, cyclonic storm, tropical depression, or simply cyclone. A hurricane is a tropical cyclone that forms in the Atlantic Ocean and northeastern Pacific Ocean, whereas a typhoon forms in the northwestern Pacific Ocean; equivalent storms in the south Pacific or Indian Ocean are simply referred to as "tropical cyclones" or "strong cyclonic storms."