It depends. More than one tornado produce by a cyclic supercell are called a tornado family.
Six or more tornadoes produced by the same storm system is called a tornado outbreak.
If one tornado forms next to, and circles another it is called a satellite tornado.
Another possibility is what is called a multiple vortex tornado. This is a tornado that has several smaller, more intense suction vorticies moving around inside it, almost like mini-twisters. However, it is still considered one tornado even though it may have two or more funnels.
Yes, this occurs sometimes during tornado outbreaks.
Mostly it is because it is hard for a storm to gather the energy needed for a strong tornado.
Lewis and Clark County, in Montana, has had more than one tornado. I don't think there was one witnessed by the people on the Lewis and Clark expedition.
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.
Yes. After an area has been hit by a tornado the odds of a tornado striking it in the future are the same as they were before. One notable case is the town of Harvest, Alabama. On April 3, 1974 it was struck by an F5 tornado, followed by another F5 less than an hour later. Harvest was then struck by an F4 tornado in 1995, an EF5 tornado in 2011, and an EF3 tornado in 2012. The 2012 tornado destroyed homes being rebuilt following the one in 2011.
You can't exacly live near a tornado. A tornado is a short-lived event, usually lasting no more than a few minutes and it is impossible to predict exactly where one one strike.
more than one lynx is call lynxes
you call them possums if your talking about more than 1
More than one fisherman is fishermen
Well there's more than one way of looking at that. Some people consider a super tornado one that is stronger than F5. No such tornado has ever occurred. Others might consider a super tornado to be one rated F4 or F5. Those tornadoes have occurred and will continue to occur.
More than one platypus is two or more platypuses. The plural is not 'platypi'.
People, including storm chasers, will sometimes informally call a tornado a monster if it is particularly large and intense tornado, such as the one in the video linked below.