Weak magnitude 3.0 earthquake at 15 km depth
4 Nov 08:33 UTC: First to report: USGS after 4 minutes.
4 Nov 15:36: Magnitude recalculated from 3.1 to 3.0. Hypocenter depth recalculated from 15.3 to 15.1 km (from 9.5 to 9.4 mi). Epicenter location corrected by 0.7 km (0.4 mi) towards SE.
Update Thu, 4 Nov 2021, 08:39Small magnitude 3.1 earthquake 21 miles southeast of Graham, Washington, United States
3.1 quake 4 Nov 1:29 am (GMT -7)
An earthquake of magnitude 3.1 occurred only 10 minutes ago 21 miles southeast of Graham, Washington, United States, the United States Geological Survey reported.
The quake hit at a shallow depth of 9.5 miles beneath the epicenter near Graham, Pierce County, Washington, USA, early morning on Thursday, November 4th, 2021, at 1:29 am local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 3.1 earthquake as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ashford (pop. 220) located 4 miles from the epicenter. In Graham (pop. 23,500, 21 miles away), Frederickson (pop. 18,700, 25 miles away), South Hill (pop. 52,400, 27 miles away), Spanaway (pop. 27,200, 28 miles away), Puyallup (pop. 39,700, 30 miles away), Parkland (pop. 35,800, 31 miles away), Puyallup (pop. 207,900, 37 miles away), Olympia (pop. 50,300, 42 miles away), and Kent (pop. 127,000, 43 miles away), the quake was probably not felt.
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