Phil Stafford was working in his home office on Snoqualmie Ridge when the room started to move.

“It was just like a super-quick jolt,” said Stafford, who had been leaning back in his office chair, in a conference call with east coast colleagues on speakerphone.

“Then I felt like someone kind of grabbed the back of my chair, it was so sudden,” he said.

The 3.2 magnitude earthquake occurred at 1:22 p.m. Thursday, Sept. 22, in Maple Valley, but people 11 miles away in the Valley reported feeling the vibrations.

The event was centered off Route 169 near Spring Lake, about one mile southeast of Maple Heights.

At first, Stafford wasn’t sure what he had experienced had been an earthquake, until he noticed that some items had shifted on a shelf, and the cords on his window blinds were swinging.

Having grown up on the west coast, Stafford has been through several earthquakes, including the magnitude 6.8 Nisqually in 2001, and the August 23 magnitude 5.8 earthquake centered in Virginia. Last week’s shake felt nothing like those two, he said.

His neighbors, walking outside, hadn’t felt the quake at all.

Originally reported at 2.8, the “micro-quake” was upgraded to a 3.2 magnitude earthquake after a seismologist review.

For more information, visit http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/uw09222022.php