Weak mag. 3.4 earthquake - Valdez-Cordova Parish, 32 mi north of Valdez, Alaska, USA, on Sunday, Aug 1, 2021 8:47 am (GMT -8) -

Weak mag. 3.4 earthquake - Valdez-Cordova Parish, 32 mi north of Valdez, Alaska, USA, on Sunday, Aug 1, 2021 8:47 am (GMT -8)

Weak magnitude 3.4 earthquake at 27 km depth

1 Aug 16:51 UTC: First to report: EMSC after 4 minutes.
1 Aug 16:51: Now using data updates from USGS
1 Aug 16:52: Hypocenter depth recalculated from 24.5 to 33.2 km (from 15.2 to 21 mi). Epicenter location corrected by 10.7 km (6.7 mi) towards ESE.
1 Aug 19:30: Magnitude recalculated from 3.6 to 3.4. Hypocenter depth recalculated from 33.2 to 26.8 km (from 21 to 16.7 mi). Epicenter location corrected by 5.9 km (3.7 mi) towards NW.
Update Sun, 1 Aug 2021, 16:57
Small 3.6 quake hits near Valdez, Valdez-Cordova, Alaska, USA
3.6 quake 1 Aug 8:47 am (GMT -8)
3.6 quake 1 Aug 8:47 am (GMT -8)
A magnitude 3.6 earthquake near Valdez, Valdez-Cordova, Alaska, USA, was reported only 10 minutes ago by the United States Geological Survey, considered the key international and national agency that monitors seismic activity in the US. The earthquake occurred at a moderately shallow depth of 21 miles beneath the epicenter in the morning on Sunday 1 August 2021 at 8:47 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.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 3.6 as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Tonsina (pop. 78) located 29 miles from the epicenter, and Valdez (pop. 3,900) 30 miles away.

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Earthquake data

Date & time: Aug 1, 2021 16:47:38 UTC -
Local time at epicenter: Sunday, Aug 1, 2021 8:47 am (GMT -8)
Magnitude: 3.4
Depth: 26.8 km
Epicenter latitude / longitude: 61.5831°N / 146.1092°W (Valdez-Cordova, Alaska, United States)
Antipode: 61.583°S / 33.891°E
Nearest volcano: Wrangell (118 km / 73 mi)
Nearby towns and cities:
50 km (31 mi) W of Tonsina (pop: 78) --> See nearby quakes!
52 km (32 mi) NNE of Valdez (pop: 3,870) --> See nearby quakes!
54 km (34 mi) WSW of Willow Creek (pop: 191) --> See nearby quakes!
60 km (37 mi) SW of Copper Center (pop: 328) --> See nearby quakes!
63 km (39 mi) WSW of Kenny Lake (pop: 355) --> See nearby quakes!
66 km (41 mi) SSW of Glennallen (pop: 483) --> See nearby quakes!
85 km (53 mi) ESE of Glacier View (pop: 234) --> See nearby quakes!
117 km (73 mi) N of Cordova (pop: 2,200) --> See nearby quakes!
142 km (88 mi) E of Sutton-Alpine (pop: 1,450) --> See nearby quakes!
159 km (99 mi) E of Palmer (pop: 6,790) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.9 x 109 joules (2.21 megawatt hours, equivalent to 1.9 tons of TNT) More info
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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.
Mag.DepthLocationSource
3.427 kmSouthern AlaskaUSGS
3.633 kmSOUTHERN ALASKAEMSC

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.
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