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Moderate mag. 4.1 earthquake - 39 mi southeast of Worland, Washakie County, Wyoming, USA, on 4 Jul 3:17 pm (GMT -6) -

Moderate mag. 4.1 earthquake - 39 mi southeast of Worland, Washakie County, Wyoming, USA, on 4 Jul 3:17 pm (GMT -6) Moderate mag. 4.1 earthquake - 39 mi southeast of Worland, Washakie County, Wyoming, USA, on 4 Jul 3:17 pm (GMT -6)

Moderate magnitude 4.1 earthquake at 14 km depth

4 Jul 21:35 UTC: First to report: VolcanoDiscovery after 17 minutes.
4 Jul 21:38: Now using data updates from USGS
5 Jul 00:38: Hypocenter depth recalculated from 15.4 to 13.5 km (from 9.6 to 8.4 mi). Epicenter location corrected by 5.3 km (3.3 mi) towards NE.
5 Jul 00:52: Hypocenter depth recalculated from 13.5 to 14.4 km (from 8.4 to 8.9 mi).
Update Sun, 4 Jul 2021, 21:42
Magnitude 4.1 earthquake strikes near Worland, Washakie County, Wyoming, USA
4.1 quake 4 Jul 3:17 pm (GMT -6)
4.1 quake 4 Jul 3:17 pm (GMT -6)
A magnitude 4.1 earthquake near Worland, Washakie County, Wyoming, USA, was reported only 24 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 shallow depth of 9.6 miles beneath the epicenter early afternoon on Sunday 4 July 2021 at 3:17 pm 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 4.1 as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ten Sleep (pop. 250) located 29 miles from the epicenter, Worland (pop. 5,400) 39 miles away, Thermopolis (pop. 3,000) 41 miles away, and Buffalo (pop. 4,600) 61 miles away.

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Earthquake data

Date & time: Jul 4, 2021 21:17:42 UTC -
Local time at epicenter: 4 Jul 3:17 pm (GMT -6)
Magnitude: 4.1
Depth: 14.4 km
Epicenter latitude / longitude: 43.6581°N / 107.3603°W (Washakie, Wyoming, United States)
Antipode: 43.658°S / 72.64°E
Nearby towns and cities:
42 km (26 mi) S of Ten Sleep (pop: 254) --> See nearby quakes!
62 km (39 mi) SE of Worland (pop: 5,370) --> See nearby quakes!
69 km (43 mi) E of Thermopolis (pop: 2,970) --> See nearby quakes!
93 km (58 mi) SW of Buffalo (pop: 4,630) --> See nearby quakes!
108 km (67 mi) NE of Riverton (pop: 10,900) --> See nearby quakes!
122 km (76 mi) NW of Casper (pop: 60,300) --> See nearby quakes!
131 km (81 mi) SSW of Sheridan (pop: 17,900) --> See nearby quakes!
144 km (90 mi) NE of Lander (Fremont County) (pop: 7,690) --> See nearby quakes!
165 km (102 mi) WSW of Gillette (pop: 32,600) --> See nearby quakes!
166 km (103 mi) SE of Cody (Park County) (pop: 9,790) --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds 34.9°C (95 F), humidity: 18%, wind: 3 m/s (5 kts) from S
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 8.9 x 1010 joules (24.8 megawatt hours, equivalent to 21.3 tons of TNT) | about seismic energy
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If you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable to earthquake science, seismic hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
4.114 kmWyomingUSGS

User reports for this quake (10)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Willard springs / Light shaking (MMI IV) / vibration and rolling / 5-10 s : Sounded like booming thunder and felt the ground shake for several seconds. We heard it before we felt it | 6 users found this interesting.  
Buffalo, Johnson, Wyoming (94.2 km NNE of epicenter) [Map] / not felt : It was at 3:15 I got up to put co  
Thermopolis, Hot Springs, Wyoming (68.6 km W of epicenter) [Map] / not felt
Worland what / not felt
South Thermopolis, Wyoming / Light shaking (MMI IV) / both vertical and horizontal swinging / 2-5 s : Just realized that it probably was an earthquake, no anxiety or damage. Actually quite enjoyed feeling it and still being secure  
Worland, Wyoming / Weak shaking (MMI III) / rattling, vibrating / very short
Basin (97.3 km NW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s
Gillette (162.6 km ENE of epicenter) [Map] / not felt (reported through our app)
Roundup, Montana / not felt
THERMOPOLIS (69.7 km W of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s
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