Tsunami Message Definitions
Tsunami Warning: A potentially destructive tsunami is imminent or expected. Warnings alert the public that widespread, dangerous coastal flooding is possible and may continue for several hours after the initial wave arrives. Appropriate response to the tsunami threat may include evacuating beaches and low-lying coastal areas and repositioning ships to deep water when there is time to safely do so.
Tsunami Watch: Alerts emergency officials and the public that a potentially destructive tsunami may later impact the Watch area. Therefore, appropriate actions should be taken to monitor the event and prepare to evacuate if the Watch is upgraded to a Tsunami Warning.
Tsunami Advisory: Advises public of potential threat of tsunami that may produce strong currents or waves dangerous to those in or near the water. Significant widespread inundation is not expected.
Information Statement: Informs emergency officials and public that an earthquake has occurred. There is little or no threat of a destructive tsunami.
To learn more about the tsunami warning system visit the NOAA Tsunami Website
Emergency Notification Information
The Oregon State Emergency Alert System (EAS) is used to notify the public of a possible approaching tsunami. A steady three minute siren tone is the attention alert signal. Turn on the nearest radio or television and listen for emergency information and instructions.
In some cases not all radio or television stations may be able to transmit. As part of the EAS, particular radio stations have been designated as primary sources for information. Click the link below to find out more about these stations.
The State and County Civil Defense Agencies test the EAS at 11:15 a.m. on the first workday of the month. When you hear the test sirens or your radio or television program is interrupted this is your opportunity to think about what you will do when it is not a test.