The infamous Dallas Tornado actually occurred in 1957 and it lasted 3 days, 16 hours and 35 minutes.
The kind of tornado that has 3 second gusts exceeding 200 miles per hour is an EF5 Tornado.
An EF5 tornado is the most intense tornado on the Enhanced Fujita Scale.
An EF5 will have wind speeds greater than 200 mph (322 km/h).
Some of the costliest and deadliest tornadic events in world history were caused by EF5 tornadoes.
The 3 states in Tornado Alley are Kansas, Oklahoma and Texas.
Other states are also in Tornado alley which include the states of Nebraska, eastern South Dakota, and eastern Colorado.
If a tornado is close enough you can usually hear the tornado coming.
When a tornado is coming and pretty close you'll usually hear a loud roar that is persistent or you may also hear hiss, buzz or rumble and when it gets close enough you can see the tornado.
Tornadoes can and do happen outside the USA.
Tornadoes have happened in places outside the USA such as New Zealand, Australia, Europe, Africa, Asia, and South America.
The state that has the worst tornadoes is Texas followed by Kansas and Oklahoma.
Tornado Alley refers to places where Tornadoes are most frequent to happen.
The state that is Tornado Alley is Texas followed by Kansas and Oklahoma.
More than one state is Tornado Alley.
The states that have the biggest tornadoes are Oklahoma, Texas and Kansas which are known as Tornado Alley.
The states that have no tornadoes are Rhode Island and Alaska.
Alaska and Rhode Island are 2 states that have 0 annual tornadoes although they can have other severe weather.
Alaska – 0.
Rhode Island – 0.
Hawaii – 1.
Vermont – 1.
New Hampshire – 1.
Delaware – 1.
Connecticut – 2.
Massachusetts – 2.
Tornadoes are the most violent storms on Earth; violently rotating columns of air exceed 100 mph and can reach up to 300 mph.
The strongest tornadoes are often near the edge of the updraft, not far from where air is descending in a downdraft caused by the thunderstorms with falling rain or hail.
Most tornadoes form from thunderstorms.
You need warm, moist air from the Gulf of Mexico and cool, dry air from Canada.
When these two air masses meet, they create instability in the atmosphere.
The signs of a tornado forming are.
A dark, often greenish, sky.
Wall clouds or an approaching cloud of debris.
Large hail often in the absence of rain.
Before a tornado strikes, the wind may die down and the air may become very still.
A loud roar similar to a freight train may be heard.