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The 1990 Plainfield tornado was a devastating tornado that occurred on the afternoon of Tuesday, August 28, 1990. The violent tornado killed 29 people and injured 353. [1] It is the only F5/EF5 rated tornado ever officially recorded in August in the United States (the 1883 Rochester, Minnesota cyclone is unofficially considered an F5), and the only F5 tornado to strike the Chicago area.
1990 saw some unusual and powerful tornadoes and tornado outbreaks. On March 13 not one, but two F5 tornadoes struck Kansas, both coming from the same supercell.This was the only day since the 1974 Super Outbreak to have more than one F5 on the same day until the 2011 Super Outbreak, when four EF5 tornadoes touched down on April 27.
An example of a tornado warning polygon issued by the National Weather Service. A tornado warning (SAME code: TOR) is a public warning that is issued by weather forecasting agencies to an area in the direct path of a tornado, or a severe thunderstorm capable of producing one, and advises individuals in that area to take cover.
1990 Plainfield tornado: August 28, 1990: Northeastern Illinois: 13: 29 fatalities: Produced some of the most intense vegetation scouring ever documented. Strongest August tornado, though only rated F5 based on corn damage. F4 damage occurred to buildings in Plainfield, Illinois, killing 29 people.
Since its initial usage in May 1999, the National Weather Service (NWS) in the United States has used the tornado emergency bulletin — a high-end classification of tornado warning — sent through either the issuance of a warning or via a "severe weather statement" that provides updated information on an ongoing warning—that is issued when a violent tornado (confirmed by radar or ground ...
The tornado struck Virginia Beach at 5:50 p.m., according to NBC 12. The NWS confirmed the twister late Sunday night . A video shared on social media showed a large tornado in the distance .
The video is old and does not show an Aug. 8 tornado in Tennessee.
In late 2023, American meteorologist and tornado expert Thomas P. Grazulis created the Outbreak Intensity Score (OIS) as a way to rank tornado outbreaks. [1] [2] For the score, only significant tornadoes are counted: F2/EF2 tornadoes receive 2 points each, F3/EF3 tornadoes receive 5 points each, F4/EF4 tornadoes receive 10 points each, and F5/EF5 tornadoes receive 15 points each. [1]