Map showing annual probability of 1 cm or more of tephra accumulati...
By Volcano Hazards Program
1905 (approx.)
![Map showing annual probability of 1 cm or more of tephra accumulati...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img230.jpg?itok=zDOMsUs4)
Detailed Description
The Medicine Lake area has one chance in 5,000 each year of receiving 1 cm or more of tephra. Black lines are state and county boundaries.