- Use numbers, not month names (ex. Use 5, not "May").
- States should be spelled correctly, but case does not matter.
- The Fujita Scale is used to assess the intensity and damage caused by a tornado. A tornado rated as F0 is the least damaging, while an F5 is the most damaging.
- As of February 1, 2007, the Enhanced Fujita Scale was adopted.
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*Data within this database has been pulled from the Storm Prediction Center's (SPC) historical tornado data file. Thus, the data included here is only as accurate as the data in the official SPC archive.
