Tsunami warning issued for Hawaii after earthquake off Russia: What Tsunami Warning, Watch and Advisory mean and are different from each other

A massive 8.8 magnitude earthquake off Russia’s coast has triggered tsunami warnings across the Pacific, including Alaska, Hawaii, and the US West Coast. A tsunami warning indicates that a tsunami is either already occurring or is expected to hit soon. Officials are cautioning residents to move inland, especially near Northern California, where waves could reach 5.5 feet.