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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:
51 km NNW of Pahrump, Nevada
Period:
18 Apr 2024 14:31:06 - 21 Apr 2024 06:53:21 (2 days 16 hours 22 minutes)
Volcanoes in 100km radius:
None
Earthquakes:
66
48 swarms found nearby.
2000
S20000510.1(19.6km)
9 May
3 days 11 hours
40 earthquakes
S20000523.1(28.1km)
22 May
1 day 10 hours
40 earthquakes
S20000909.1(12.6km)
9 Sep
5 days 12 hours
111 earthquakes
19 Oct
2 days 19 hours
98 earthquakes
S20001122.1(15.4km)
21 Nov
1 day 6 hours
42 earthquakes
2002
S20020104.1(11.7km)
3 Jan
3 days 1 hours
61 earthquakes
S20020120.1(25.8km)
19 Jan
7 days 17 hours
99 earthquakes
S20020130.1(25.7km)
29 Jan
1 day 2 hours
27 earthquakes
S20020526.1(11.6km)
25 May
12 days 2 hours
136 earthquakes
S20020614.1(11.7km)
13 Jun
36 days 2 hours
1659 earthquakes
S20020720.1(11.4km)
19 Jul
89 days 17 hours
1357 earthquakes
S20021204.1(11.1km)
3 Dec
7 days 15 hours
89 earthquakes
2003
S20030525.1(11.1km)
24 May
4 days 16 hours
88 earthquakes
S20031117.1(12.2km)
16 Nov
1 day 14 hours
32 earthquakes
2005
S20051019.1(11.1km)
18 Oct
4 days 12 hours
59 earthquakes
S20051107.1(10.3km)
6 Nov
2 days 19 hours
69 earthquakes
2006
25 Jun
8 days 12 hours
129 earthquakes
2007
S20070623.1(11.6km)
23 Jun
1 day 6 hours
40 earthquakes
6 Jul
4 days 3 hours
89 earthquakes
2008
S20080127.2(27.1km)
26 Jan
1 day 14 hours
32 earthquakes
14 May
6 days 3 hours
70 earthquakes
S20080614.2(12.6km)
14 Jun
3 days 1 hours
42 earthquakes
S20080922.2(10.7km)
21 Sep
9 days 14 hours
133 earthquakes
S20081005.1(15.4km)
5 Oct
27 days 12 hours
359 earthquakes
6 Dec
5 days 16 hours
55 earthquakes
2009
S20090109.1(11.3km)
8 Jan
3 days 17 hours
48 earthquakes
S20090701.1(14.7km)
30 Jun
8 days 13 hours
88 earthquakes
S20090726.2(12.5km)
25 Jul
29 days 18 hours
381 earthquakes
4 Dec
2 days 7 hours
34 earthquakes
2010
S20100202.1(14.8km)
1 Feb
3 days 5 hours
44 earthquakes
S20100212.2(11.6km)
12 Feb
7 days 8 hours
89 earthquakes
3 Jun
1 day 7 hours
32 earthquakes
2012
S20120601.1(10.6km)
31 May
5 days 2 hours
101 earthquakes
2014
S20140416.1(15.2km)
16 Apr
1 day 19 hours
32 earthquakes
2015
21 Jul
3 days 19 hours
218 earthquakes
S20150907.1(12.6km)
6 Sep
1 day 10 hours
26 earthquakes
S20151017.1(10.7km)
16 Oct
2 days 3 hours
47 earthquakes
2016
S20160228.1(12.5km)
27 Feb
1 day 4 hours
38 earthquakes
S20161118.1(25.4km)
18 Nov
1 day 10 hours
31 earthquakes
10 Dec
4 days 3 hours
49 earthquakes
17 Dec
1 day 1 hours
27 earthquakes
2019
S20190424.1(29.6km)
23 Apr
1 day 11 hours
46 earthquakes
2022
16 Jan
2 days 14 hours
49 earthquakes
S20220519.1(24.4km)
18 May
1 day 5 hours
37 earthquakes
2023
S20231228.1(27.0km)
27 Dec
3 days 9 hours
69 earthquakes
2024
18 Jan
8 hours
51 earthquakes
2025
9 Feb
3 days 18 hours
77 earthquakes
S20250730.2(12.0km)
29 Jul
2 days 0 hours
60 earthquakes
AI-generated article — for informational and entertainment purposes only. May contain inaccuracies. Full disclaimerFound an error?

Seismic Swarm S20240419.1 Near Pahrump, Nevada: Characteristics and Regional Context

A seismic swarm designated S20240419.1 occurred northwest of Pahrump, Nevada, between 14:31 UTC on 18 April 2024 and 06:53 UTC on 21 April 2024. The sequence lasted 64 hours and 22 minutes and included 66 earthquakes. The events were centered 51 km NNW of Pahrump in a region of ongoing extensional tectonics within the Basin and Range Province.

The swarm began with a magnitude 0.4 event at 5 km depth. Subsequent activity consisted predominantly of microearthquakes with magnitudes between -0.5 and 0.6. Depths ranged from 3 km to 9 km, with the majority occurring between 5 km and 7 km. The largest event reached magnitude 0.6 on 19 April at 7 km depth. Activity showed a gradual decline after the initial 24 hours, with isolated events continuing until the swarm terminated on 21 April.

The Pahrump area lies within the southern Walker Lane belt, a zone of distributed right-lateral shear accommodating Pacific-North America plate motion. This tectonic setting produces numerous normal and strike-slip faults that generate both isolated earthquakes and swarm sequences. Historical records indicate persistent low-level seismicity driven by regional extension and local fault interactions.

Seismic swarms have been documented in the vicinity since at least 2000. Between 1 January 2000 and the current event, 46 swarms were recorded. Annual counts include five swarms in 2000, seven in 2002, and additional episodes in 2003, 2005–2010, 2012, 2014–2016, 2019, 2022, 2023, and 2024. These swarms typically involve dozens of small-magnitude events clustered in time and space, consistent with fluid migration or aseismic slip on nearby faults.

The 2024 swarm fits established patterns of short-duration, low-magnitude activity in the region. Most events remained below magnitude 0.0, and no damage or felt reports were associated with the sequence. Depths clustered in the upper crust align with the brittle-ductile transition zone typical of Basin and Range normal faulting.

References

SeismoSight internal swarm catalog S20240419.1
USGS Earthquake Catalog (historical swarm statistics 2000–2024)
Nevada Seismological Laboratory regional fault database