Given when this question was asked (May 3, 2011), it is not likely that such an outbreak will occur any time soon. The Tornado outbreak of April 25-28 of 2011 was only the second or third outbreak of such magnitude and intensity that has occurred since modern record keeping began in 1950. One was in 1974 and another outbreak in 1965 might also qualify. Such events are very rare. That said, there were three exceptionally large and intense tornado outbreaks in 2011 and it would be difficult, perhaps impossible to tell whether such activity might continue into 2012.
Yes, this occurs sometimes during tornado outbreaks.
not really. It depends more on the specific conditions of the storm that produced the tornado.
A typical tornado lasts several hours, often more than 5 hours.
No. It is very rare for a tornado to last more than an hour. The average tornado lasts about 10 minutes. Some only last a few seconds.
The duration of a tornado can vary greatly, from a few seconds to several hours. On average, a tornado lasts for about 10 minutes. Tornado strength, size, and environmental conditions all play a role in determining how long a tornado will last.
Usually, yes. The vast majority of tornadoes last less than an hour, with a typical tornado lasting no more than 10 minutes. Occasionally, a tornado will last for more than an hour, sometimes much more. At least one tornado is believed to have lasted for more than 3 hours. Such long-lived tornadoes are usually rather strong.
The last tornado to hit the United States as of May 2014 was on April 28th. The tornado hit residents living in the state of Kansas.
There is no certain way of knowing but many tornadoes become narrower and more rope like before dissipating. A tornado can still last for some time during this rope-out stage, though.
Yes. An event that produces six or more tornadoes withing a couple of days is called a tornado outbreak. Some of the more extreme outbreaks have produced upwards of 100 tornadoes in a single day.
There is no given duration for a tornado of any intensity, but a tornado as violent as an EF5 will generally last fairly long. Most will likely last for at least 20 minutes. Some may last for well over an hour.
Yes, but it is more like a hurricane.
As of October 13, 2014 the last known tornado was on October 10 near Centerville, Tennessee. it was rated EF1. More tornadoes are expected today.