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Note:This page contains AI-generated content for informational and entertainment purposes only. It may contain inaccuracies. Raw event data is from USGS and EMSC. All statistics, lists, and derived information are generated by this site. Full disclaimerFound an error?
Location:
38 km S of Goldfield, Nevada
Period:
19 Apr 2025 18:54:45 - 22 Apr 2025 08:30:07 (2 days 13 hours 35 minutes)
Volcanoes in 100km radius:
Ubehebe Craters(44km)
Earthquakes:
49
23 swarms found nearby.
2000
6 Jun
7 days 22 hours
86 earthquakes
2001
8 Jul
1 day 15 hours
29 earthquakes
2002
2 Dec
1 day 23 hours
37 earthquakes
2004
S20041119.1(26.7km)
19 Nov
1 day 6 hours
26 earthquakes
2005
S20050327.1(26.7km)
26 Mar
1 day 13 hours
36 earthquakes
2006
S20060526.1(11.7km)
26 May
4 days 17 hours
173 earthquakes
2007
S20070124.1(11.2km)
24 Jan
2 days 15 hours
85 earthquakes
4 Jul
2 days 20 hours
47 earthquakes
2010
3 Jul
1 day 3 hours
38 earthquakes
S20100930.1(27.3km)
29 Sep
24 days 14 hours
754 earthquakes
2011
17 Apr
2 days 12 hours
62 earthquakes
17 Jul
1 day 18 hours
35 earthquakes
2012
17 Dec
7 days 12 hours
440 earthquakes
2015
S20150214.1(23.7km)
14 Feb
9 days 9 hours
434 earthquakes
3 Jun
2 days 10 hours
48 earthquakes
2017
23 Nov
1 day 13 hours
34 earthquakes
2019
S20190310.1(29.4km)
10 Mar
1 day 4 hours
40 earthquakes
2020
S20200709.1(28.3km)
8 Jul
1 day 11 hours
29 earthquakes
2021
4 Oct
4 days 10 hours
69 earthquakes
2024
18 Jun
7 days 14 hours
102 earthquakes
15 Dec
1 day 15 hours
28 earthquakes
22 Dec
2 days 7 hours
49 earthquakes
31 Dec
3 days 8 hours
65 earthquakes
AI-generated article — for informational and entertainment purposes only. May contain inaccuracies. Full disclaimerFound an error?

Seismic Swarm S20250420.2 Near Goldfield, Nevada: Characteristics and Regional Context

Seismic swarm S20250420.2 was recorded 38 km south of Goldfield, Nevada, commencing at 18:54 on 19 April 2025 and concluding at 08:30 on 22 April 2025. Over 61 hours and 35 minutes, the sequence produced 49 earthquakes. Magnitudes ranged from 0.3 to 2.3, with the largest event occurring at 07:20 on 21 April. Focal depths were predominantly shallow, between 0 and 9 km, consistent with activity in the upper crust.

The swarm exhibited a typical pattern of clustered, low-magnitude events without a dominant mainshock. Early activity on 19–20 April included events of magnitude 1.0–2.1 at depths of 2–9 km. Activity intensified on 20 April with multiple events above magnitude 1.0, followed by a gradual decline. On 21 April, the sequence peaked with the magnitude 2.3 event and several others near magnitude 2.0 at depths around 4–5 km. The final events on 22 April were smaller, below magnitude 1.6. This temporal distribution reflects the episodic nature common in swarm sequences.

The Goldfield area lies in Esmeralda County within the Basin and Range Province. The region experiences extensional tectonics driven by normal and strike-slip faulting along the Walker Lane belt, which accommodates a portion of Pacific–North American plate boundary deformation. Historical earthquake swarms in this setting are frequently linked to fluid movement along pre-existing faults rather than magmatic processes.

Since 1 January 2000, 23 swarms have occurred in the same vicinity. These events cluster in specific years: one each in 2000, 2001, 2002, 2004, 2005, 2006, 2011, 2012, 2017, 2019, 2020 and 2021; two each in 2007, 2010 and 2015; and four in 2024. The current swarm continues this pattern of recurrent, moderate activity, underscoring persistent crustal stress release in the Goldfield region.

Such swarms contribute to the broader seismic hazard assessment for central Nevada. Although individual events remain small, their frequency indicates ongoing fault interactions that warrant continued monitoring by regional seismic networks.

References

  • SeismoSight internal swarm classification database (S20250420.2 parameters and historical statistics).
  • USGS Earthquake Catalog (regional tectonic framework for Esmeralda County, Nevada).