Earthquakes are common, and large-scale ones occur around every 300 years. The Cascadia earthquake of 1700—estimated at 8.7–9.2 on the moment magnitude scale—caused a tsunami to sweep across California, Oregon, Washington, and British Columbia, reaching Japan the next day. It was produced when the entire Cascadia subduction zone, about long, slipped approximately in a megathrust event. Another major earthquake occurred in 1873 near present-day Brookings. With a magnitude of 7.3, the quake was felt from Seattle to San Francisco. Wind is also a factor in the region; storms can sometimes reach over . The Columbus Day Storm of 1962 brought devastating winds to nearly all of Oregon; nearby Port Orford recorded gusts exceeding . The storm killed 38 people across the state and caused over $200 million worth of damage. The watershed often experiences wildfires, some of them major. The Biscuit Fire of 2002 burned over of the Kalmiopsis Wilderness and surrounding regions.