A tornado warned storm is a thunderstorm for which a tornado warning has been issued, indicating that it is capable of producing a tornado. A tornado threat is a general term that refers to the danger tornadoes may pose to an area during a particular storm.
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Yes, and if the same storm it may be minutes apart.
No, a tornado is a violent, rotating wind storm. The funnel cloud formed by a tornado is usually small compared with other clouds.
The main tool is Doppler radar, which can remotely measure wind speed and direction. This can be used to find rotation in a storm associate with a possible tornado. Another, recently developed tool is dual-polarized radar. Unlike conventional radar, this radar can distinguish between rain, hail, and tornadic debris.
No. Tornadoes are short-lived small scale weather events and are a byproduct of thunderstorms. Hurricanes are long-lived, large scale storm systems.
the dark blue-black clouds forming on the horizon