A tornado was spotted near Harrisburg, Arkansas ... Overnight tornadoes could impact parts of the Mississippi and Tennessee Valleys, with severe storms expected to reach major cities like ...

A powerful, wide-reaching spring storm is threatening parts of the central and eastern US, with a life-threatening outbreak of long-lived and strong tornadoes possible in some areas. Follow here for ...

The Mississippi River is a giant river that provides abundant resources. But, how big is it, exactly? This animated map shows the scale of the Mississippi River and its drainage system in perspective.