No. A twister is a tornado.
The average width of a tornado is about 100 to 200 feet, but they can vary in size from a few feet to over a mile wide. The average length of a tornado's path is around 6 miles, but they can travel much farther distances under certain conditions.
In terms of weather a tornado is a very fast process.
A tornado most often forms within a few minutes of the rear-flank downdraft wrapping around the mesocyclone.
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It is impossible to make long term predictions for when and where a tornado will occur. At best, we will know about this next tornado a few minutes before it forms.
It is impossible to determine when the next tornado will occur anywhere. At best we can make a rough prediction of where a tornado outbreak might occur in the next few days and where an individual tornado might hit in the next few minutes if there is a potentially tornadic storm.
A tornado warning means that a tornado has already been spotted or is likely to form in the next few minutes. The tornado may be only minutes away from your location, so if a tornado warning is issued, take cover immediately.
It is impossible to make such predictions. Whether or not a place will be hit by a tornado cannot be predicted more than a few minutes in advance.
A tornado can form in a matter of minutes and usually lasts a few minutes. Some last just a few seconds while in rare cases a tornado may last few a few hours. A tornado is usually not over any given spot for more than a few second, but a large and/or slow moving one may impact a given location for several minutes.
To make a tornado in a bottle, fill a 2-liter bottle with water, add a few drops of dish soap, and swirl the water to create a vortex. Optionally, you can paint the bottle with clouds and a landscape scene to make it into a "tornado in a bottle board" for educational purposes.
It varies but most often it stops raining a few minutes beforehand. A break in the clouds may be seen, a sign of a downdraft that helps the tornado form. A number of tornado survivors recall it being unusually quite just before the tornado hits.
You would need water and a few drops of dish soap to create a tornado in a bottle. The soap helps to reduce the surface tension of the water, allowing the vortex to form more easily when the bottle is swirled.