Hawaii

Like Hawaii, the Seattle has volcanoes around it's area. The closest would be Mount Rainer which is fifty four miles away. The volcano is considered one of the most dangerous in the world. It contains lava deposits that are more than 840,000 years old! The volcano has not erupted since 1840 but is still technically an active volcano. If it erupts at any time great damage would be done to the surrounding areas, it could easily reach Seattle! When Mount ST Helen erupted it

Information from Wikipedia: http://en.wikipedia.org/wiki/Mount_Rainier

Picture from: Bschool.com