Weak mag. 2.4 earthquake - 21 mi east of Issaquah, King County, Washington, USA, on Sunday, 30 May 2021 11:30 pm (GMT -7) -
Weak magnitude 2.4 earthquake at 15 km depth
31 May 06:35 UTC: First to report: EMSC after 4 minutes.
31 May 06:35: Now using data updates from USGS
31 May 06:50: Magnitude recalculated from 3.0 to 2.4. Hypocenter depth recalculated from 12.0 to 15.4 km (from 7.5 to 9.6 mi). Epicenter location corrected by 4 km (2.5 mi) towards E.
Update Mon, 31 May 2021, 06:39Small magnitude 3.0 quake hits 18 miles southeast of Issaquah, Washington, United States late at night
3.0 quake 30 May 11:30 pm (GMT -7)
An earthquake of magnitude 3.0 occurred late at night on Sunday 30 May 2021 at 11:30 pm local time near Issaquah, King County, Washington, USA, as reported by the United States Geological Survey.
According to preliminary data, the quake was located at a shallow depth of 7.5 miles. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 3.0 as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Riverbend (pop. 2,100) located 5 miles from the epicenter. In Issaquah (pop. 36,100, 18 miles away), Maple Valley (pop. 25,700, 19 miles away), West Lake Sammamish (pop. 33,900, 22 miles away), Union Hill-Novelty Hill (pop. 18,800, 23 miles away), Sammamish (pop. 52,300, 23 miles away), Covington (pop. 19,200, 24 miles away), Seattle (pop. 684,500, 33 miles away), and Tacoma (pop. 207,900, 40 miles away), the quake was probably not felt.
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Date & time: 31 May 2021 06:30:47 UTC -
Local time at epicenter:
Sunday, 30 May 2021 11:30 pm (GMT -7)
Depth: 15.4 km
Epicenter latitude / longitude: 47.46817°N / 121.59283°W
, United States
Nearest volcano: Mount Rainier
(69 km / 43 mi)
Nearby towns and cities:12 km (7 mi) E of Riverbend
(pop: 2,130) --> See nearby quakes!34 km (21 mi) E of Issaquah (King County)
(pop: 36,100) --> See nearby quakes!41 km (26 mi) ESE of Sammamish
(pop: 52,300) --> See nearby quakes!47 km (29 mi) E of Renton
(pop: 100,200) --> See nearby quakes!48 km (30 mi) ESE of Bellevue
(pop: 139,800) --> See nearby quakes!49 km (31 mi) ENE of Kent
(pop: 127,000) --> See nearby quakes!49 km (31 mi) ENE of Kent
(pop: 127,000) --> See nearby quakes!58 km (36 mi) ESE of Seattle
(pop: 684,500) --> See nearby quakes!68 km (43 mi) ENE of Tacoma
(pop: 207,900) --> See nearby quakes!110 km (68 mi) ENE of Olympia
(pop: 50,300) --> See nearby quakes!
Primary data source: USGS
(United States Geological Survey)
Estimated released energy: 2.5 x 108
joules (69.8 kilowatt hours) More info
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
|2.4||15 km||7 Km E of Tanner, Washington||USGS|
|2.2||15 km||56 Km E of Seattle , WA||NRCAN|
User reports for this quake (3)
At magnitude 2.4, this quake might have been felt very close to the epicenter and under calm conditions.
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Sammamish / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : Very weak vibration in bed on upper floor
Port Orchard / Weak shaking (MMI III) / rattling, vibrating
Renton, Washington (43.5 km W of epicenter) [Map]
/ not felt : Not really noticable but startled one of the cats. (reported through our app)
Earlier earthquakes in the same area
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