PORTLAND, Ore. (AP) — A small earthquake in Southwest Washington shook parts of metropolitan Portland on Wednesday.

The U.S. Geological Survey says the 3.7-magnitude quake struck just after 5 p.m. and was centered near Amboy, Wash., about 20 miles north of Vancouver. No damage was reported.

An hour after the quake, more than 900 people had told the USGS that they felt it.

Krissy Barber of Gresham, Ore., told KATU-TV that it felt like everyone in her apartment building slammed their doors in unison, and the couch continued to shake for several seconds. A Vancouver couple said the quake was "very forceful," and some things on the counter were shaken and turned around.

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Information from: KATU-TV, http://www.katu.com/