The State’s monthly test of the Statewide Outdoor Warning Siren System is scheduled for Tuesday, September 4, 2018 at 11:45 a.m.
During this monthly test, all warning sirens will sound a one-minute Attention Alert Signal.
The Attention Alert Signal informs residents to turn on a radio or television for information and instruction for an impending emergency, or if in a coastal inundation area, evacuate to higher ground.
Oahu residents near Campbell Industrial Park may also hear a “whooping” tone following the siren test. These areas include portions of Kalaeloa, Makakilo, Nanakuli, Kapolei, & Ewa Beach.
The “whooping” tone is a test of the HAZMAT siren warning that will be activated in the event of a hazmat incident requiring emergency notification of businesses, schools and residents within the Campbell Industrial Park area.