2014 Oso landslide
Oso Mudslide on March 29, 2014, view to the northeast | |
| Date | March 22, 2014 |
|---|---|
| Time | 10:36 a.m. |
| Location | Oso, Washington |
| Coordinates | 48°16′57″N 121°50′53″W / 48.28256°N 121.84800°W |
| Cause | Suspected soil saturation from heavy rainfall |
| Deaths | 43 |
| Non-fatal injuries | 12 total (4 serious) |
| Missing | 0 |
| Property damage | $60 million (2014 USD) |
A major landslide occurred 4 miles (6.4 km) east of Oso, Washington, United States, on March 22, 2014, at 10:37 a.m. local time. A portion of an unstable hill collapsed, sending mud and debris to the south across the North Fork of the Stillaguamish River, engulfing a rural neighborhood, and covering an area of approximately 1 square mile (2.6 km2). Forty-three people were killed and 49 homes and other structures destroyed. The landslide has been described as one of, if not the most, deadly landslide in American history.