A tornado warning is in effect until 9:15 p.m. in New Castle County, Delaware.

An updated tornado warning was issued by the National Weather Service on Tuesday at 5:52 p.m. in effect until 6:30 p.m. for Bucks, Montgomery and Philadelphia counties.

A line of severe thunderstorms spawned two tornado warnings and several areas of flash flooding Wednesday evening.

Intense warnings issued in D.C. and surrounding counties threaten power and safety. Stay informed with the latest updates.

The National Weather Service has issued a tornado warning and flash flood alert for parts of the US - including Washington DC - and residents have been urged to take cover immediately and avoid travel. Forecasters have issued a stark warning, predicting ...

Live cams from outside the White House showed heavy rain and strong winds amid a tornado warning in Washington, DC

This coverage is made possible through a partnership between IPR and Grist, a nonprofit environmental media organization. ​​Deadly floods in Texas last week have left at least 111 people dead, with more than 160 still missing.

Environment Canada's tornado warning for eastern Ontario has ended. From about 3:20 until 4 p.m. the agency said a severe thunderstorm could possibly produce a tornado in communities such as Kemptville and Merrickville. It's not yet known if a tornado formed.