A tornado watch is issued by the Storm Prediction Center when general weather conditions are favorable for the formation of tornadoes. A watch is not issued for a particular location, but rather covers a large portion of one or more states. A tornado watch only indicates a general threat across a region and not an imminent threat.
A tornado warning is issued by a local office of the National Weather Service if a tornado has been spotted or detected or if a thunderstorm has rotation that has a high chance of producing a tornado in the immediate future. A tornado warning usually covers portions of one or two counties based on the location, speed, and direction of the threatening storm.
A tornado does not cause a natual disaster. A tornado is a natural disaster. The Oklahoma City area has been hit by many tornadoes, and is likely the most tornado-prone city in the world. Many of the tornadoes that occur in central Oklahoma are extremely powerful, capable of tearing apart well-built houses. When such a tornado moves through a mighly populated area such as Oklahoma City, the damage can be incredible. In the worst case, on May 3, 1999 thousands of homes were destroyed, hundreds were injured, and dozens were killed by a single F5 tornado. A similar event, though not quite as deadly, struck on May 20, 2013.
The Oklahoma City tornado of May 3, 1999 had a wind gust measured to 302 mph.
The fastest wind speed recorded in a tornado was 302 mph in the Oklahoma City tornado of May 3, 1999. However, wind measurements in tornadoes are rare and it is likely that other tornadoes had faster winds but did not have them measured. The fastest speed a tornado is known to have traveled is 73 mph. That was the Tri-State tornado of March 18, 1925. This tornado also holds the record for duration (3 hours, 29 minutes), path length (219 miles), and U.S. death toll (695).
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Yes, the entire city of Pompeii was buried under the debris from the volcano, as well as much of the surrounding area.Yes, the entire city of Pompeii was buried under the debris from the volcano, as well as much of the surrounding area.Yes, the entire city of Pompeii was buried under the debris from the volcano, as well as much of the surrounding area.Yes, the entire city of Pompeii was buried under the debris from the volcano, as well as much of the surrounding area.Yes, the entire city of Pompeii was buried under the debris from the volcano, as well as much of the surrounding area.Yes, the entire city of Pompeii was buried under the debris from the volcano, as well as much of the surrounding area.Yes, the entire city of Pompeii was buried under the debris from the volcano, as well as much of the surrounding area.Yes, the entire city of Pompeii was buried under the debris from the volcano, as well as much of the surrounding area.Yes, the entire city of Pompeii was buried under the debris from the volcano, as well as much of the surrounding area.
As of 12:30 EDT on March 18, 2013 Spring City, Tennessee is not under a tornado watch. It is, however under a severe thunderstorm watch. A tornado warning has been issued near Lewisburg, though that is some distance from Spring City.
Joplin was under a tornado warning for about 17 minutes before the tornado formed and 19 minutes before it entered the city.
The first tornado warning was issued on March 20, 1948 for a storm that produced a tornado in the Oklahoma City area.
Yes, though circumstances still led to some being caught off guard. The City of Joplin was under a tornado warning for 17 minutes before the tornado actually formed, so residents were told of a thunderstorm with the potential to produce a tornado. When the tornado actually touched down, it was only a mile outside of Joplin and was causing damage in the city only two minutes later. While the warning was updated accordingly, it gave little time for the people on the west side of Joplin.
Three tornadoes that ocurred are rather notable in this regard.The Oklahoma City tornado of March 20, 1948. This tornado struck Tinker Air Force base after being predicted by what was essentially the first tornado watch.The Waco, Texas tornado of Mary 11, 1953. This F5 tornado tore through the city of Waco without warning, killin 114 people. The high death toll and lack of warning prompted the beginnings of the development of an early warning system.The Wichita Falls, Texas tornado of April 10, 1979. This F4 tornado killed 42 people in and near Wichita Falls, many of whom were trying to flee. This demonstrated that attempting to evacuate efore a tornado often puts people at greater risk.
It varies considerably. Warnings for major tornado may have a better lead time than averages because the signature is usually easier to detect on radar. Lead time is often 15 to 20 minutes. This can include time before the tornado touches down. However, there is quite a bit of variability. Greensburg Kansas, which was hit by an EF5 tornado in 2007, had 39 minutes warning. By contrast, Cincinnati, Arkansas, which was hit by an EF3 tornado in 2010, had no warning. If you only consider the time after the tornado has touched down, lead times can be shorter, as sometimes a tornado will develop just outside a town, leaving little time to update warnings. In the case of Joplin, Missouri in 2011, the tornado touched down less than a mile outside of town and entered the city two minutes later. A tornado warning has been in effect for 17 minutes before the tornado formed, warning of the potential for a tornado.
There were two significant tornadoes on March 20, 1948, both in the Oklahoma City area. The first, an F3, caused major damage to Tinker Air Force base. This tornado prompted the first ever tornado warning. The second tornado, an F2, touched down on the air base and damaged several buildings there before moving to other parts of the metro area.
Oklahoma city was devastated by a mile wide F5 tornado on May 3, 1999.
The Oklahoma City tornado of 1999 occurred in Tornado Alley, but so is every tornado in the central part of Oklahoma.
The Joplin tornado struck the city of Joplin, Missouri.
Yes. Bay City was hit by an F2 tornado on June 22, 1957, an F3 tornado on June 12, 1984, and an F0 tornado on August 4 , 2003.
Even the largest tornadoes are not large enough to damage a city. There is no specific kind of tornado that would cover a large portion of a city, though one term used is "wedge." A wedge tornado is a tornado that appears wider than it is tall.