The entry of a ~2 tonne meteoroid into the Earth's atmosphere produced a daylight fireball visible from Quebec, Ontario, New Hampshire, Vermont and New York.
[2] A sonic boom shook the entire Montreal region as the fireball passed overhead.
The fireball was recorded by satellites maintained by the U.S. Department of Defense and seismographic stations within Canada.
Observers in the area of Saint-Robert who witnessed the terminal explosion also heard the fragments falling and striking the earth.
The first mass was recovered within minutes of the fall, from a 25 centimetres (9.8 in) deep pit, 3 kilometres (1.9 mi) east of Saint-Robert by Stephane Forcier.