Damage surveys provide crucial information about when, where and how strong U.S. tornadoes are to better understand disaster ...

The 2011 EF5 tornado is Joplin, Missouri was incredibly ... Missouri was caused by the fungus Apophysomyces trapeziformis. When the first round of infected victims started showing symptoms ...

Since tornadoes started to be tracked reliably in 1953, a total of 71 twisters have touched down in Bexar County. Here are ...

The Joplin tornado is one of the most dangerous EF5 twisters ever recorded, and here is why it is classified as an EF5 in the first place. The Enhanced Fujita scale is the official way that ...

The National Weather Service in Memphis resumed their surveys of damage from the numerous tornadoes we saw across our viewing area.

This scale, implemented in 2007, categorizes tornadoes from EF0, the weakest tornadoes, to EF5, the strongest. The wind speeds are just estimates, based on damage surveys conducted by the National ...

Just four Ohio tornadoes since 1950 have received the most severe EF5 designation. The last time was May 31, 1985, when an EF5 tornado that tore through parts of Portage and Trumbull counties ...

The other, which had the most severe damage near Diaz in Jackson County, was determined to be a high-end EF4 tornado with maximum winds of 190 mph. For comparison, an EF5 tornado has winds of at ...

Just four Ohio tornadoes since 1950 have received the most severe EF5 designation. The last time was May 31, 1985, when an EF5 tornado that tore through parts of Portage and Trumbull counties ...