JavaScript is disabled
Our website requires JavaScript to function properly. For a better experience, please enable JavaScript in your browser settings before proceeding.
Mount St. Helens (known as Lawetlat'la to the Indigenous Cowlitz people, and Loowit or Louwala-Clough to the Klickitat) is an active stratovolcano located in Skamania County, Washington in the Pacific Northwest region of the United States. It lies 52 miles (83 km) northeast of Portland, Oregon and 98 miles (158 km) south of Seattle. Mount St. Helens takes its English name from the British diplomat Lord St Helens, a friend of explorer George Vancouver who surveyed the area in the late 18th century. The volcano is part of the Cascade Volcanic Arc, a segment of the Pacific Ring of Fire.
Mount St. Helens is best known for its major eruption on May 18, 1980, the deadliest and most economically destructive volcanic event in U.S. history. Fifty-seven people were killed; 200 homes, 47 bridges, 15 miles (24 km) of railways, and 185 miles (298 km) of highway were destroyed. A massive debris avalanche, triggered by a magnitude 5.1 earthquake, caused a lateral eruption that reduced the elevation of the mountain's summit from 9,677 ft (2,950 m) to 8,363 ft (2,549 m), leaving a 1 mile (1.6 km) wide, horseshoe-shaped crater. The debris avalanche was 0.6 cubic miles (2.5 km3) in volume. The 1980 eruption disrupted terrestrial ecosystems near the volcano. By contrast, aquatic ecosystems in the area greatly benefited from the amounts of ash, allowing life to multiply rapidly. By six years after the eruption, most lakes in the area returned to their normal state.After its 1980 eruption, the volcano had continuous volcanic activity until 2008. Geologists predict that future eruptions will be more destructive, since the configuration of the lava domes there require more pressure to erupt. Despite this, Mount St Helens is a popular hiking spot, and it is climbed year-round. In 1982, the Mount St. Helens National Volcanic Monument was established by U.S President Ronald Reagan and the U.S Congress.

View More On
  1. U

    anyone interested in bear and cougar in the Mt Hood area?

    I have lived in welches for a couple years and will be hunting bear and cougar this fall. I have already gone scouting three or four times and I was wondering if there was anyone in the area or interested in hunting the area this fall for bear and cats. Seems like everyone has elk fever, hunts...
  2. HuckleberryFun

    Where to Shoot in Mt. Hood NF?

    I saw Mt. Hood National Forest listed under "Supporting Organizations." Where are good places to shoot there? Any special rules apply other than "leave the site cleaner than you found it"? I do that. Permit needed? Check in at the ranger station, or just go? Thanks.
  3. Cogs

    Mt Hood Nat Forest CleanUp April 23rd, 2016

    Check back to this first post for any changes or updates prior to this event. Improved area at Wildcat Sat April 23, 2016, 9 AM to 1 PM (+/- an hour). Google Map Link: To meeting area... GPS Coordinance: 45°18'48.0"N 122°05'03.6"W Directions to base camp...
Back Top