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Canceled - Tsunami Warning Communications Test

March 25, 2020, 11 am - 12 pm ()

Event Location:
Del Norte, Humboldt, and Mendocino counties

Event Contact:
Ryan Aylward, NOAA,, 707-443-6484 x223

Canceled: Interruptions of TV and Radio Stations, and activation of NOAA Weather Radios and Outdoor Sirens to test the Tsunami Warning System and ensure it works properly during a real tsunami emergency.

Full Description:
Canceled: If you are watching television between 11:00 a.m. and 12:00 Noon on Wednesday morning,
expect to see a crawler at the bottom of the screen indicating that a tsunami warning has been
issued, and hear a voice indicating that it is only a test. If you don’t hear the TV audio, please
remember that this is only a test. If you are listening to the radio, you will hear alerting tones
followed by a voice announcing that the test is occurring. If you have a NOAA weather radio
with the Public Alert feature, the radio will automatically turn on and you will hear the same
message as broadcast on radios. In some areas, you may also hear the sounding of a
tsunami siren, an airplane testing its public address system, or receive other
communication tests in some local jurisdictions. The Wireless Emergency Alert (WEA)
system that comes across smart phones will NOT be activated for this test.

Please help us by providing any feedback regarding this test by emailing:

The test is conducted by the National Weather Service, the California Office of Emergency Services, the
Offices of Emergency Services for Del Norte, Humboldt, and Mendocino Counties, and Tribal
Governments. For more information, contact: National Weather Service (707) 443-6484.