FACT CHECK: Did A Tsunami Siren Recently Sound In Alaska? checkyourfact.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from checkyourfact.com Daily Mail and Mail on Sunday newspapers.
Nearby, earlier in the day, the Alaska Volcano Observatory said the Shishaldin Volcano erupted in a "significant explosion," sending an ash cloud soaring up to 40,000 feet above sea level.