A violently rotating storm of small diameter; the most violent weather phenomenon. It is produced in a very severe thunderstorm and appears as a funnel cloud extending from the base of a cumulonimbus to the ground. A funnel cloud is a tornado that has not touched the ground. Tornados can appear in many different colors depending on the type of dust they pick up from the earth. sources: GLIDE; WMO
3 Mar 2014, NOAA, United States of America - gov
When it comes to weather, the more you know and the sooner you know it, the safer and better prepared you can be. Later this year, NOAA’s National Weather Service will usher into daily operations a sophisticated model called the High-Resolution Rapid Refresh, that will update forecasts hourly over the entire lower 48 United States at extremely sharp resolution...
|Source of data: OFDA/CRED International Disaster Database|
External Online Resources on Tornado