HONOLULU — The monthly test of the all-hazard Statewide Outdoor Warning Siren System is scheduled for Monday, May 1, 2023 at 11:45 a.m. The siren test will be coordinated with a test of the Live Audio Broadcast segment of the Emergency Alert System.

During this monthly test, all Statewide Outdoor Warning Sirens will sound a one-minute?Attention Alert Signal (SteadyTone). A test of the Live Audio Broadcast segment of the Emergency Alert System is conducted at roughly the same time as the monthly siren sounding, in cooperation with Hawaii’s broadcast industry. There will be no exercise or drill accompanying the test.

The all-hazard Outdoor Siren Warning System for Public Safety is one part of Hawaii’s Statewide Alert & Warning System used to notify the public during emergencies. If you hear this siren tone in circumstances other than a test, follow emergency information and instructions provided by official government channels. These may be in the form of a local radio or television station broadcast, and/or a cellular Wireless Emergency Alert.

Wireless Emergency Alert delivers sound-and-text warnings to compatible mobile cellular phones. The Emergency Alert System & Wireless Emergency Alert’s notifications are managed by the Federal Emergency Management Agency’s Integrated Public Alert and Warning System, the nation’s alert and warning infrastructure.

O?ahu residents and visitors in areas surrounding Campbell Industrial Park may also hear a “whooping” tone following the siren test. These areas include portions of Kalaeloa, Makakilo, N?n?kuli, Kapolei, and ‘Ewa Beach. The “whooping” tone is a test of the Hazardous Materials (HAZMAT) siren warning group that would be activated in the event?of an actual HAZMAT incident requiring emergency notification of businesses, schools, residents, and visitors in the vicinity of Campbell Industrial Park. Contact the City and County of Honolulu’s Department of Emergency Management at (808) 723-8960 for more information on the HAZMAT warning group siren test.