Be Geohazard Aware!
Detailed geohazard information is available at park visitor centers and from scientists at the U.S.G.S. Cascades Volcano Observatory.
The more time you spend in an area where there are geologic hazards, the greater the chances that you could be involved in an emergency event. While most people consider the danger to be relatively low, you must decide if you will assume the personal risk of visiting these potentially dangerous locations. When you arrive in the park, be sure to review posted geologic hazard, evacuation and escape information.
Longmire and the campgrounds at Cougar Rock, Ohanapecosh, White River, Ipsut Creek, and Sunshine Point are all vulnerable to geologic hazards. Rising water level, shaking ground and a rumbling noise may signal a debris flow or lahar. If you are near a river and notice a rapid rise in water level, feel a prolonged shaking of the ground, and/or hear a roaring sound coming from up valley – often described as the sound made by a fast–moving freight train – move quickly to higher ground! A location 160 feet or more above river level should be safe.
Geohazard Warning Sirens
Listen to the Geohazard Siren.