There are multiple reports of a bright light, possibly a meteor, that was accompanied by a large boom observed over Ontario and New York today.
The American Meteor Society says it is blaming a "fireball" for a very loud noise that was observed by several people over New York state at approximately 12:03 p.m. this afternoon.
https://twitter.com/ScottWx_TWN/status/1334213289304264713
https://twitter.com/6402Retired/status/1334200048767414273
https://twitter.com/pgbrown/status/1334220550814789644
The AMS's website that tracks sightings of today's event includes one witness report from West Grey, Ontario.
Other locations with witness reports include Kitchener, London, Toronto and Barrie.