It varies quite a bit. The average warning time is about 15 minutes.
The average lead time for a tornado warning is 15 minutes.
The possibility of a tornado results in a "tornado watch" for a certain area and time.The actual existence of a tornado results in a tornado warning which is effective until cancelled but may be limited in time.
The warning, which was actually more like a tornado watch, was issued by the United States Air Force. At the time, the Weather Bureau, the precursor to the National Weather Service, forbade the mentioning of tornadoes in its forecasts.
No. A tornado watch means the general weather conditions are favorable for tornadoes. If a tornado has been sighted then a tornado warning is issued.
The average lead time for a tornado warning is 15 minutes. Sometimes you get more warning, sometimes less.
No. There wasn't even a warning. The tornado was detected, but due to communication problems the warning was never issued. Additionally, when a tornado is coming the advice is usually to take cover rather than evacuate, as there usually isn't enough time for an evacuation.
The average lead time for a tornado warning is 14 minutes.
Average lead time for a tornado warning is about 15 minutes. In rares cases it can be over 30 minutes.
Be aware that conditions are favorable for the formation of tornadoes in your area during the time specified, and have a safety plan. Not until a tornado warning is issued for your specific area do you need to take action.
It varies. The average lead time for a tornado warning in the United States is 14 minutes. However, in recent years lead times have been as long as 39 minutes, while in other cases there has been no warning.
Much of the time, yes. However if radar detects strong enough rotation in a storm, indicating a tornado is likely to form soon, that may also prompt a tornado warning.
It varies, but the average lead-time for a tornado warning is 15 minutes. Sometime lead times of up to half an hour can be issued.