Pierce County Emergency Management will be re-testing the audible on one of the 18 All Hazards Alert and Broadcast (AHAB) lahar sirens in the Puyallup Valley on May 11 at 10 a.m. The audible test is scheduled for the siren in the Sumner Industrial Park, located at 24th St E and 142nd Ave E.

Since the system-wide drill last Tuesday which resulted in the failed ‘wails’ of all the sirens, the contractors who installed and upgraded the sirens have been testing and fixing each of the sirens individually. Technicians from Federal Signal determined that a corrupted file was uploaded into the sirens’ software during the last software upgrade in April.