[Updated at 5:20 p.m.] U.S. Geological Survey has revised the earthquake's preliminary magnitude to 5.0. The USGS initially assigned it a preliminary magnitude of 5.5.
[Updated at 2:55 p.m.] There has been no major damage reported so far from an earthquake that hit Canada today, the city of Toronto said in a press release.
"In our initial assessment, there has been no major damage to City infrastructure. Further investigations are taking place to confirm," the statement said. "The Toronto Transit Commission and Transportation Services have reported that there has been no damage to their infrastructure or interruptions to service.
"The City’s Emergency Operations Centre is up and running in preparation for the G20 so the City is uniquely prepared to respond to the event. We will continue to monitor the situation and will report as necessary."
iReport: Are you there? Share earthquake images, video
[Updated at 2:42 p.m.] Barre Campbell, a spokesman for the city of Ottawa, tells CNN that there are no reports of major damage in downtown Ottawa.Campbell said he witnessed self-evacuations of downtown buildings, but that people appear to be headed back into work buildings now.
[Updated at 2:32 p.m.] An operator at the Ottawa Hospital said she felt the quake for about 30 seconds.
Sgt. Marc LaPorte, a spokesman for the Royal Canadian Mounted Police, told CNN that it was a "slight tremor" and there "doesn't appear to be any damage reported to date yet."
[Updated at 2:21 p.m.] CNN affiliate CBC in Canada is reporting that buildings in Toronto and Ottawa have been evacuated.
CBC also spoke with Kathleen Sullivan who was working on the eighth floor of an office in downtown Toronto when the quake hit.
"It was very peculiar because we could actually see the plants on our window shelf shaking," she told the CBC. "By the time we gathered in the hall and figured out it wasn't our imagination, it stopped. But it was easily a minute of things shaking.
[Updatd at 2:16 p.m.] The quake struck at 1:41 p.m. near the borders of Ontario and Quebec provinces, the USGS said.
It was about 12 miles deep.
[Updated at 2:15 p.m.] CNN affiliate WDIV in Detroit, Michigan is reporting tremors were felt in the metro area of Detroit.
Other tremors have reportedly been felt in New York, New Jersey, Connecticut and Cleveland, Ohio.
CNN affiliate WFSB in Hartford, Connecticut reported that some residents in Connecticut felt shaking. CNN affiliate WMUR in Manchester, New Hampshire reported that residents in New Hampshire also felt the tremors.
[Posted at 2:10 p.m.] An earthquake with a preliminary magnitude of 5.5 struck Wednesday in southern Canada, the U.S. Geological Survey reported Wednesday.
This story is developing. We'll bring you the latest information as we get it.
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was felt in Erie Pa
Felt in Ann Arbor MI
Felt it in Moon Twp/Coraopolis, PA!
I felt it here in NH.
We felt it down here in Dayton, OH
Felt it in Wheeling, WV!!
Felt it in Huntington, WV!
Felt it in Syracuse, NY with reports from Rochester, NY and NYC also feeling it. Now that I've informed the world that my chair jiggled for 5 seconds, I can get back to an important game of computer solitaire.
Felt in West Seneca NY
We live about 20 mins. drive from downtown Toronto on the 4th floor. Me and my wife were sitting on the sofa in the living room and discussing something when suddenly we experienced vibration which lasted for about 30 secs to a minute. It felt weird. We thought the G20 meeting began before time.
An earthquake hit on the Ontario-Quebec border measuring 5.5 on the Richter scale and 19 miles deep.
5.5 is moderate.
felt the earth quake in cleveland. I was working on the 3rd floor of our office building when we felt the blinds started shaking and hitting the walls.
I'm sitting on the 5th floor of a high rise in downtown Toronto and didn't feel a thing while all the others around me did. Strange...
Felt across Michigan – Novi, Lansing and Grand Rapids – family members reporting. lasted maybe 5-8 seconds
Didn't feel a thing here in Windsor... of course, nothing's moved here for years!
All the sudden the computer monitors begin to vibrate. one of the old engineer who can barely walk got so scared that he ran outside. it was fun!!1