Tunguska event is the name for a very large mid-air explosion that occurred on 30 June 1908 in Siberia. Most eyewitnesses talk about one or more explosions that happened around 7:15 a.m. local time. The cause of these explosions is unknown, but a meteorite impact has been suggested as a likely cause. About 30 kilometres (19 mi) around the place where the event happened, trees were uprooted. In Wanwara, a small settlement, about 65 km (40 mi) away, windows and doors were smashed. It is estimated, that in an area of about 2,150 km2 (830 sq mi), the trees were uprooted. Over 500 km (311 mi) away, bright light was seen, and an earthquake was felt.
There are no reports of people who have died. This is attributed to the fact that almost no people lived in the area, at the time. Depending on the source, there were one or two casualties.
Today, it is believed that the event happened about 7 to 15 km (4.3 to 9.3 mi) above ground, at 0:14 UTC (7:14 a.m. local time).