Urgent Tsunami Warning- Possible tsunami generated by a significant earthquake in local waters. Sirens will sound. Turn on radio. If an urgent tsunami warning is announced, leave the evacuation zones immediately.
 
Tsunami Watch- Significant distant earthquake has occurred. Tsunami approach not confirmed but possible. No siren sounding. Prepare for possible upgrade to tsunami warning."
 
Tsunami Warning- Tsunami approach confirmed. Sirens will sound. Monitor radio. Be prepared to evacuate when advised/ordered by civil defense.