United States

Severe thunderstorms will push into the eastern third of the country this afternoon over the Appalachian Mountains and across the I-95 corridor from Maine to the Carolinas. A powerful cold front ushering in a fall-like air mass will clash with warm and humid air currently in place across the east to bring these dangerous storms. Cities most at risk include Philadelphia, Baltimore, and Washington, D.C.

These thunderstorms will be capable of producing heavy downpours, damaging wind gusts and hail larger than ping pong balls. Severe thunderstorms are also expected to cause travel delays on many major interstates.

There is also an expanding threat of tornadoes across portions of the Hudson Valley and Southwestern New England including cities such as New York City, Albany, N.Y., Amherst, Mass., Hartford, Conn., Newark, N.J., and Long Island. Rotating thunderstorms have already resulted in tornado warnings across Brooklyn and Queens.

For the full story, read Severe Weather Outbreak: NYC, Philly, DC. Check back here as we live blog throughout the afternoon and evening.

UPDATES:

6:52 PM EDT: There were two tornadoes confirmed in New York today. The first was and EF0 in Queens with winds of 70 mph. The second one was and EF1 in Canarsie with winds of 110 mph.

5:49 PM EDT: NYSEG power company in New York reported that more than 7,900 of their customers were without power as of 5:40 p.m. EDT.

5:42 PM EDT: In northern Virginia, more than 112,000 Dominion Power customers were without electricity.

5:35 PM EDT: Baltimore Gas and Electric Company reported that 8653 were without power as of 5:50 pm EDT. At the height of the storm, more than 19,000 people were without electricity across the state of Maryland.

4:41 PM EDT: Wind gusts of 55-60 mph were reported in Prince Georges County, Md.

3:52 PM EDT: NWS issued a tornado warning for areas north of Washington, D.C.

3:49 PM EDT: A confirmed tornado is on the ground near Fairfax, Va. and heading towards Washington, D.C.

3:39 PM EDT: Otsego, N.Y. police scanner reports a tree with wires is down on a house in the Village of Hancock.

2:45 PM EDT: A 60 mph wind and one-foot diameter tree branches down were reported in Oneonta, N.Y.

2:35 PM EDT: Numerous trees and power lines are down near Lancaster and Leola, Pa.

2:30 PM EDT: A funnel cloud was reported in Lancaster, Pa. by a trained spotter.

2:22 PM EDT: On Elm Ave. in Westchester, N.Y. a tree is down on power lines and on fire according to the Westchester, N.Y. police scanner.

1:55 PM EDT: Trees and wires reported down in Williamsport, Pa.

1:31 PM EDT: Westchester and Rockland counties in N.Y. and Bergen County in New Jersey were placed under a tornado warning.

12:44 PM EDT: A tornado was confirmed by NWS in Brooklyn, N.Y. Several trees down, cars moved and possible structural damage.

11:30 AM EDT: Trees and power lines reported down with shingles off roofs in DuBois, PA. There have also been reports of a funnel cloud.

11:15 AM EDT: 20-30 large trees reported down in Cheektowaga Town Park near Buffalo, N.Y.

11:00 AM EDT: 1.4 inches of rain in Brooklyn, N.Y. in just 45 minutes.

10:58 AM EDT: Structural damage reported in Breezy Point, Queens, N.Y. Power lines, trees are also reported down along with moved cars. Numerous eyewitnesses reported seeing a tornado.

10:50 AM EDT: Large trees and power lines down across Wyoming County, N.Y.

10:38 AM EDT: Multiple trees and power lines down in Flatbush, Brooklyn, N.Y. Possible structural damage, as well.

10:29 AM EDT: Numerous trees and wires down across Niagra County, N.Y. Power poles have also snapped.

10:25 AM EDT: Multiple trees down across Genesee County, N.Y.

10:22 AM EDT: Multiple trees and wires down across Orleans County, N.Y.

10:00 AM EDT: Nearly a half inch of rain in 30 minutes near Niagra Falls, N.Y.

8:37 AM EDT: Trailer toppled with multiple trees and power lines down in Buffalo, N.Y.