www.castorweather.com

Anchor text: US F4, F5 TORNADOES

Wikipedia: List of tornadoes striking downtown areas of large cities

Wikipedia: Pinson, Tennessee

Anchor text: US F4, F5 Tornadoes Since 1900

Wikipedia: List of tornadoes in the tornado outbreak of April 15–16, 1998

Anchor text: US F4 , F5 TORNADOES<!-- Bot generated title -->

Wikipedia: 1924 Lorain–Sandusky tornado

Anchor text: "US F4, F5 Tornadoes Since 1900"

Wikipedia: March 1923