Light mag. 3.5 earthquake - Custer County, 73 mi northeast of Boise, Ada County, Idaho, USA, on Sunday, 25 Apr 2021 4:23 am (GMT -6) -
Light magnitude 3.5 earthquake at 3 km depth
25 Apr 10:32 UTC: First to report: USGS after 9 minutes.
Update Sun, 25 Apr 2021, 10:36Small magnitude 3.5 earthquake 2 miles southwest of Stanley, Idaho, United States
3.5 quake 25 Apr 4:23 am (GMT -6)
The United States Geological Survey reported a magnitude 3.5 quake in the United States near Stanley, Custer County, Idaho, only 13 minutes ago. The earthquake hit early morning on Sunday 25 April 2021 at 4:23 am local time at a very shallow depth of 2 miles. 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 3.5 as well.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Stanley (pop. 68) located 2 miles from the epicenter, the quake should have been felt as light shaking. In Challis (pop. 1000, 42 miles away), the quake was probably not felt.
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Date & time: 25 Apr 2021 10:23:21 UTC -
Local time at epicenter:
Sunday, 25 Apr 2021 4:23 am (GMT -6)
Depth: 3.2 km
Epicenter latitude / longitude: 44.2°N / 114.9781°W
, United States
Nearest volcano: Shoshone
(124 km / 77 mi)
Nearby towns and cities:4 km (2 mi) WSW of Stanley
(pop: 68) --> See nearby quakes!68 km (42 mi) WSW of Challis
(pop: 1,040) --> See nearby quakes!76 km (47 mi) NW of Ketchum
(pop: 2,730) --> See nearby quakes!92 km (57 mi) NW of Hailey (Blaine County)
(pop: 8,130) --> See nearby quakes!118 km (73 mi) NE of Boise
(pop: 146,000) --> See nearby quakes!124 km (77 mi) ENE of Eagle (Ada County)
(pop: 23,600) --> See nearby quakes!131 km (81 mi) ENE of Meridian
(pop: 90,700) --> See nearby quakes!140 km (87 mi) NE of Kuna (Ada County)
(pop: 17,200) --> See nearby quakes!147 km (91 mi) ENE of Nampa
(pop: 89,800) --> See nearby quakes!149 km (93 mi) ENE of Hamburg Siding
(pop: 51,700) --> See nearby quakes!
Primary data source: USGS
(United States Geological Survey)
Estimated released energy: 1.1 x 1010
joules (3.12 megawatt hours, equivalent to 2.68 tons of TNT) 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.
|3.5||3.2 km||3 Km WSW of Stanley, Idaho, USA||USGS|
|3.5||3 km||SOUTHERN IDAHO, USA||EMSC|
User reports for this quake (11)
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4 km ENE of epicenter [Map] / Moderate shaking (MMI V) / rattling, vibrating / 2-5 s : Broke windows. Knocked stuff off walls and shelves | 3 users found this interesting.
Stanley, Idaho / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : A lot of shaking | One user found this interesting.
Jerry Hughes, Stanley, ID / Light shaking (MMI IV) / single lateral shake / very short : short shake woke me from sleep | One user found this interesting.
Greg Stanley Idaho / Moderate shaking (MMI V) / horizontal (sideways) swinging / very short : Quick Side to side little intense. | One user found this interesting.
Stanley / Light shaking (MMI IV)
Lower Stanley Jerry’s cabin / Light shaking (MMI IV) / single vertical bump / very short
Stanley, ID / Weak shaking (MMI III) / rattling, vibrating / 5-10 s
stanley, id / Moderate shaking (MMI V) / 15-20 s
Stanley, ID / Moderate shaking (MMI V) / simple rolling (tilting sideways along one direction) / 2-5 s
Stanley, Idaho / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s
Stanley, ID / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s
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