Pierce County’s 17 outdoor lahar sirens in the Puyallup River Valley sounded at noon today in a successful test of the equipment and sound coverage, the county said.
The sirens warn of impending volcanic mudflow from Mount Rainier. Since October, the county has tested them once a month.
The sirens are meant to be heard by people who are outdoors, said Paul Shukovsky, a Pierce County Emergency Management spokesman. They’re part of a multi-layered warning system that would be employed in a real lahar event, he said.
There also would be warnings on TV and radio, and the Pierce County …