Lighting is an early indicator of more violent storm activity, including tornadoes.

Lightening you see is a dependable early warning sign of severe weather including tornadoes.

Severe weather events, including tornadoes between April 10-11 cost insurers $74.4m alone.

Scattered rains and more severe weather, including tornadoes, were moving through parts of the southern U.S. Plains region this week.

The Labor Department said severe weather last month, including tornadoes and flooding, in the Midwest and the South did not materially affect data collection.

Severe and 'atypical' weather events including tornadoes in the US state of Georgia have claimed 11 lives and injured 23.