Mount Rainier is much more than a mountain in the sky. Constructed of hundreds of lava flows, and capped by as much glacier ice as all other Cascade volcanoes combined, Rainier’s steep rubbly slopes and abundant water make it prone to landslides and lahars (volcanic mudflows), especially during eruptions. Lahars are the biggest hazards to the area. Scientists and emergency officials watch and warn.

Do your part by being prepared. 



  1. CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels.

    Jun 14, 2019 16:24 - Activity Update: All volcanoes in the Cascade Range of Oregon and Washington are at normal background levels of activity. These include Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams in Washington...



Live Safety Near Mount Rainier
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Hazard Maps
Assess your local hazards.
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Make a Plan
Use forms to identify evacuation routes and meeting locations.
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How will you communicate your plans and how will you connect with those important to you?


Stay informed.
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Emergency broadcasts
NOAA weather radio and 511 emergency travel.
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County Alerts
Sign up for Local Alerts.

State Highway Alerts
Sign up for Travel Alerts
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USGS Volcano Notification Service
Receive notices on specified volcanos.
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Outdoor sirens
Available in some communities


Lahar Warning issues, move off the valley floor.
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Evacuate by vehicle or on foot to high ground above the valley floor. Do not stop to look, continue as directed.
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Find Shelter
If you are safe from lahars and ash is falling, seek shelter in a building or vehicle.Guidelines

Hazard Maps
Lahar Evacuation Routes
Science and Mount Rainier