POSTED: 08:50 p.m. HST, Nov 20, 2012
LAST UPDATED: 05:34 a.m. HST, Nov 21, 2012
Hawaii Civil Defense officials will test sirens at Sandy Beach, Hanauma Bay, Waialae Beach Park and Maunalani Park from 9 a.m. to 1 p.m. today.
Residents might hear the sirens sound for 30 seconds.
Technicians will use data from these tests to verify operational status and maintenance actions.