[Ed. – Add Washington to Idaho, Pennsylvania, and Oklahoma. The most common speculation is that the booms are sonic booms, but in all cases, authorities have confirmed that no possible sources of sonic booms were operating at the time. This remains a mystery.]
A new round of booming noises has disturbed residents of west Port Angeles and Joyce, who say the mysterious sounds shake their homes.
The rattling noises were reported at about 12:21 p.m. Wednesday, almost exactly two weeks after the last round of booms heard on the afternoon of Feb. 25, and again at about 9:35 a.m. Thursday.
“It sounded like it came from the direction of the Strait [of Juan de Fuca],” said Jim Haugen, who lives on Milwaukee Drive in west Port Angeles near the bluffs and reported the Wednesday boom.
“We were in the house, heard the boom and the house vibrated,” he said.
“It sounds similar to a sonic boom, [but there were] no planes in the area,” he added. …
If it was a sonic boom, it wasn’t from a U.S. Navy aircraft, said Anthony Popp, spokesman for NAS Whidbey Island.
The Navy strictly adheres to aviation rules on supersonic flight operations, which restricts supersonic operations to designated areas or over the ocean, more than 30 miles offshore, Popp said.
Spokespeople with other military units in the region have said they have had no activity in the Strait during the times the booms were heard.