Previously, the USGS had four volcanoes on Orange / Watch status, but now there are six. Six of the USGS's 161 active volcanoes are of major concern. More than 160 potentially active volcanoes are monitored by the USGS in the United States, most of which are located in Alaska.
Officials Issue Red Alert for U S Volcano Due to Impending Explosions natureworldnews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from natureworldnews.com Daily Mail and Mail on Sunday newspapers.