It is the tornado outbreak of April 25-28, 2011 which produced 359 tornadoes, of which 207 occurred on April 27.
Most tornadoes are not spawned directly from hurricanes themselves, but rather from the thunderstorms that form within the hurricane's outer bands. These tornadoes can occur in the vicinity of a hurricane, especially in the right-front quadrant of the storm. The interaction between the hurricane's large-scale circulation and local weather conditions can sometimes lead to tornado development.
If six or more tornadoes form in one day from the same storm system it is called a tornado outbreak. A tornado outbreak can last anywhere from a few hours to a few days.
The highest number of tornadoes to have occurred in in one day was 207 on April 27, 2011. The whole outbreak lasting April 25-28 featured over 350 tornadoes, making it the largest ever recorded.
There are no records of any tornadoes in Minnesota on this date, though at this point in history most weak (F0 and F1) tornadoes were missed, so it is possible that a tornado ocurred but was never recorded.
A group of tornadoes produced by the same storm system withing a day or so is called a tornado outbreak. A series of tornadoes produced in succession by the same supercell is called a tornado family.
It is difficult to determine, as until the 1990s we did not have an accurate count of weak tornadoes. The largest number of recorded weak tornadoes tornadoes in an outbreak would probably go to the Super Outbreak of April 25-28, 2011 with 264 tornadoes rated as weak. This outbreak also holds the record for most tornadoes overall at 349.
Tornadoes are most often spawned by a type of storm called a supercell.
That title goes to the Super Outbreak of April 3-4 1974, with a total of 30 violent tornadoes. Officially, 7 tornadoes were rated F5 and 23 rated F4.
The of April 25-28 2011. There were over 350 tornadoes in the whole outbreak with 207 in a 24 hour period on April 27.
Most tornadoes are not spawned directly from hurricanes themselves, but rather from the thunderstorms that form within the hurricane's outer bands. These tornadoes can occur in the vicinity of a hurricane, especially in the right-front quadrant of the storm. The interaction between the hurricane's large-scale circulation and local weather conditions can sometimes lead to tornado development.
Most of the tornadoes that hit North Carolina are spawned by supercells, much like the ones on the plains. As with all areas, most of the tornadoes in NC are weak, but the state has had tornadoes rated as high as F4 on the Fujita scale. NC occasionally experiences hurricane-spawned tornadoes, which are generally not as strong as supercell tornadoes.
The 1974 outbreak was not a single tornado but series of 148 tornadoes. It is famous because it was the most intense as well as one of the deadliest and until recently the biggest of all tornado outbreaks on record.
Storm Stories - 2003 Hurricane Ivan Spawned Tornadoes was released on: USA: 28 August 2005
There are different ways of assessing this as "worst" is subjective.The deadliest outbreak in U.S. history was the on which produced the Tri-State tornado of March 18, 1925. In all, this outbreak killed 747 people, including 695 from a single tornado. There are record of 9 tornadoes in this outbreak, but it is likely that many others were not reported.The most intense outbreak on record in terms of the number of violent tornadoes was the Super Outbreak of April 3-4, 1974. There were 148 officially documented tornadoes with this outbreak. Of these, an astonishing 24 were rated F4 and 6 were rated F5. It is one of only two outbreaks to have produced more than two F5 or EF5 tornadoes. In all, 319 people were killed. This outbreak also held the title of most tornadoes within 24 hours until 2011.The costliest outbreak in terms of property damage was the Super Outbreak of April 25-28, 2011. It was also the largest tornado outbreak ever recorded. The cost of damage amounted to about $5 billion. Most of the damage was on April 27. In all the outbreak produced 351 tornadoes, of which 207 were on April 27, the current holder for the 24-hour record. Of these tornadoes, 11 were rated EF4 and 4 were rated EF5. The outbreak killed 324 people.
Yes. Tornadoes are spawned by powerful thunderstorms and may be accompanied by large hail, lightning, strong winds, and torrential rain that can cause flooding. Some tornadoes are spawned by hurricanes.
No. The longest a tornado has been known to last is 3 hours, 29 minutes. However a tornado outbreak, which is a series of tornadoes spawned by one storm system, can last for a full day or more.
If six or more tornadoes form in one day from the same storm system it is called a tornado outbreak. A tornado outbreak can last anywhere from a few hours to a few days.