Cyclones of all types typically bring cloudiness and some form of precipitation, usually rain. Though, in meteorology "cyclone" is a very general term that can apply to both severe and non-severe weather systems.
Tornadoes are produced by strong thunderstorms and are often preceded by heavy rain and sometimes hail. The clouds in a tornadic storm are often greenish, though that is more indicative of hail than a tornado.
If you see a persistent lowering of the cloud base, especially one that is visibly rotating (this is called a wall cloud) a tornado may form soon.
In addition to warning signs you can see for yourself, be sure to check local weather updates through TV, radio, or through NOAA for advisories.
When a tornado warning means that a tornado has been spotted or detected or if a thunderstorm may produce a tornado at any moment.
Yes. A tornado watch simply means that general conditions are favorable for tornadoes to form. A tornado warning means that a tornado has been detected or may form at any moment.
Yes. In most cases a warning is issued before a tornado strikes.
Tornadoes are unpredictable but there are some signs of a tornado is coming. If the sky is a sickly green color, it starts to hail and rain hard, if the wind starts picking abnormally, if debris is being swirled around counterclockwise, if it gets calm right after a thunderstorm, or if a there is a continuous thunder roar that keeps get louder and louder then that is a tornado.
Yes. Joplin, Missouri was under a tornado warning for 19 minutes before the tornado hit. That actually may have worked against them as after a while some people left shelter thinking the warning was a false alarm.
Yes
No. Many towns and cities do not have any tornado sirens, particularly in areas not prone to tornadoes.
read the warning signs on the bottle
A tornado watch is issued when general weather conditions in a region are favorable for the formation of tornadoes. Tornado watches are numbered in the order that they are issued. So tornado watch 4 is the 4th tornado watch issued in the country that year.
The website below lists warning signs. Take any threats seriously.
A tornado watch is issued when general conditions across a region are favorable for the formation of tornadoes. Such an advisory does not indicate an imminent tornado threat for any given location; that would warrant a tornado warning.
That would depend on which Oklahoma tornado you are asking about. Oklahoma has had thousands of recorded tornadoes. If the tornado was one that occurred any time in the past 30 years or so, then the answer is almost certainly yes. If the tornado occurred before the 1960s then there probably was no warning.