Bellingham — A small earthquake struck late Thursday approximately 10 miles from the summit of Mount Baker. It is the third quake to rumble in Whatcom County this week.

The quake, which struck at 11:17 p.m., was initially measured with a 2.5 magnitude, according to a U.S. Geological Survey report, but that was later downgraded to a magnitude of 2.2. The epicenter was approximately 1.6 miles west northwest of Glacier, according to the USGS.

The quake was centered approximately 10 miles northeast of Mount Baker’s summit, according to Googlemaps, and would have been only a few hundred feet south of the Mount Baker Highway near Cornell Creek Road. .

The quake was relatively shallow, as the USGS reported it was less than a kilometer beneath the earth’s surface.

The quake came less than 31 hours after another small quake (2.1 magnitude) struck a few hundred yards south of the U.S.-Canada border near South Pass Road on Wednesday and approximately three days after another, even smaller quake (1.4 magnitude) shook approximately a mile north of Mount Baker’s summit late Monday.