Residents and visitors across the Hawaiian Islands were sent scrambling after a tsunami warning was sent out on Tuesday.

The woman captured the "eerie" siren sounds along the coast of Waikiki Beach warning Honolulu residents and visitors about the tsunami.

While Monday's tsunami response was ultimately more of a drill than a true emergency, the traffic it triggered offered a real-time test of Oahu’s evacuation capacity — one that state officials admit was deeply strained.