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Witnesses say the loud booms seem to be coming from the direction of the Strait of Juan de Fuca, shown here.
Port Angeles - The source of home-rattling booms heard in the Port Angeles area on Wednesday remains a mystery.
"We're not finding anything," said Ron Cameron, chief criminal deputy for the Clallam County Sheriff's Office.
Several who reported hearing the booms on Facebook said the sounds seemed to be coming from the Strait of Juan de Fuca.
Spokesmen from the U.S. Coast Guard and U.S. Navy each said Thursday their units have not taken part in any activity that could produce loud booms in the Strait on Wednesday.
They said they had no knowledge of any event on the Strait that could explain the explosions.
The first report appears to have been placed at 2:40 p.m. Wednesday to Clallam County emergency dispatchers from a resident on Strait View Drive, east of Port Angeles, who reported several loud booms.
At the same time, Michelle Kaake heard two booms while in her home on O Street in west Port Angeles.
"It vibrated the floor and rattled windows," Kaake said of the first boom.
The second boom came about five minutes later, she said.