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Location:
22km E of Little Lake, CA
Period:
20 Mar 2013 18:25:14 - 25 Mar 2013 09:43:23 (4 days 15 hours 18 minutes)
Volcanoes in 100km radius:
None
Earthquakes:
80
116 swarms found nearby.
2000
S20000229.1(16.6km)
28 Feb
9 days 21 hours
154 earthquakes
28 Mar
9 days 13 hours
115 earthquakes
10 Sep
9 days 14 hours
140 earthquakes
20 Sep
15 days 13 hours
274 earthquakes
2001
7 Apr
1 day 16 hours
29 earthquakes
23 Apr
8 days 21 hours
256 earthquakes
9 Jun
4 days 3 hours
51 earthquakes
14 Jul
67 days 13 hours
5060 earthquakes
2002
S20020721.1(23.1km)
20 Jul
3 days 21 hours
49 earthquakes
6 Sep
2 days 1 hours
31 earthquakes
2004
24 Feb
1 day 20 hours
36 earthquakes
28 Jun
3 days 22 hours
108 earthquakes
11 Jul
17 days 11 hours
158 earthquakes
6 Aug
8 days 18 hours
101 earthquakes
14 Sep
8 days 20 hours
86 earthquakes
24 Sep
4 days 9 hours
57 earthquakes
1 Dec
2 days 18 hours
36 earthquakes
2005
S20050806.1(27.1km)
6 Aug
7 days 5 hours
120 earthquakes
25 Sep
1 day 9 hours
41 earthquakes
2006
3 Jan
2 days 16 hours
37 earthquakes
23 Mar
4 days 11 hours
67 earthquakes
12 Jul
6 days 5 hours
67 earthquakes
S20060813.1(13.3km)
12 Aug
8 days 13 hours
97 earthquakes
23 Aug
8 days 12 hours
89 earthquakes
27 Nov
7 days 11 hours
109 earthquakes
2009
31 Dec
1 day 18 hours
54 earthquakes
2010
13 Jan
11 days 8 hours
443 earthquakes
1 Mar
5 days 11 hours
44 earthquakes
23 Apr
2 days 15 hours
41 earthquakes
18 Oct
2 days 0 hours
40 earthquakes
23 Oct
7 days 5 hours
92 earthquakes
25 Nov
1 day 13 hours
36 earthquakes
S20101202.1(14.1km)
1 Dec
1 day 12 hours
30 earthquakes
2011
S20110728.1(11.8km)
28 Jul
2 days 6 hours
40 earthquakes
2012
6 Jan
2 days 18 hours
48 earthquakes
S20121016.1(15.5km)
15 Oct
5 days 7 hours
74 earthquakes
23 Oct
6 days 5 hours
80 earthquakes
26 Nov
24 days 0 hours
802 earthquakes
2013
5 Apr
3 days 20 hours
59 earthquakes
10 Jun
3 days 18 hours
43 earthquakes
S20130804.1(28.5km)
4 Aug
1 day 20 hours
50 earthquakes
S20130812.1(10.7km)
11 Aug
2 days 13 hours
64 earthquakes
S20131223.1(29.8km)
23 Dec
5 days 10 hours
116 earthquakes
2014
20 Mar
1 day 19 hours
35 earthquakes
S20140701.1(22.7km)
30 Jun
8 days 23 hours
167 earthquakes
2015
S20150217.1(17.3km)
16 Feb
11 days 1 hours
139 earthquakes
S20150602.1(25.8km)
1 Jun
1 day 6 hours
36 earthquakes
S20150608.1(10.8km)
8 Jun
1 day 13 hours
31 earthquakes
2016
30 Mar
1 day 14 hours
27 earthquakes
S20160813.1(14.2km)
12 Aug
2 days 10 hours
46 earthquakes
20 Aug
2 days 0 hours
37 earthquakes
5 Dec
6 days 9 hours
75 earthquakes
2017
20 May
1 day 16 hours
35 earthquakes
8 Jun
3 days 3 hours
52 earthquakes
2018
29 Nov
2 days 17 hours
51 earthquakes
2019
17 Mar
4 days 6 hours
102 earthquakes
10 May
5 days 12 hours
90 earthquakes
S20190706.2(13.6km)
5 Jul
12 days 23 hours
643 earthquakes
S20190706.3(12.1km)
5 Jul
7 days 1 hours
190 earthquakes
20 Jul
9 days 5 hours
474 earthquakes
S20190803.1(12.0km)
2 Aug
2 days 8 hours
77 earthquakes
S20190804.1(11.2km)
4 Aug
41 days 17 hours
1154 earthquakes
S20190815.1(12.7km)
14 Aug
2 days 19 hours
120 earthquakes
S20190819.2(19.4km)
19 Aug
1 day 7 hours
38 earthquakes
S20190821.1(12.5km)
20 Aug
3 days 6 hours
383 earthquakes
S20190825.1(29.5km)
24 Aug
3 days 7 hours
165 earthquakes
S20190902.1(14.7km)
2 Sep
1 day 14 hours
76 earthquakes
S20190905.2(13.3km)
4 Sep
3 days 10 hours
79 earthquakes
S20190915.1(11.4km)
14 Sep
25 days 14 hours
387 earthquakes
S20190918.1(19.0km)
17 Sep
14 days 12 hours
471 earthquakes
S20191005.1(28.2km)
5 Oct
3 days 16 hours
147 earthquakes
S20191007.1(14.3km)
6 Oct
1 day 16 hours
48 earthquakes
S20191011.1(18.3km)
10 Oct
4 days 18 hours
165 earthquakes
S20191018.2(12.2km)
17 Oct
21 days 21 hours
614 earthquakes
S20191108.1(15.9km)
7 Nov
9 days 8 hours
234 earthquakes
16 Nov
3 days 4 hours
90 earthquakes
S20191119.1(15.9km)
18 Nov
10 days 3 hours
223 earthquakes
30 Nov
27 days 2 hours
353 earthquakes
S20191211.1(16.8km)
10 Dec
2 days 14 hours
78 earthquakes
S20191214.2(15.5km)
14 Dec
1 day 17 hours
43 earthquakes
2020
S20200101.1(23.9km)
1 Jan
7 days 0 hours
130 earthquakes
7 Jan
11 days 11 hours
163 earthquakes
S20200109.2(17.9km)
8 Jan
23 hours
27 earthquakes
S20200212.1(18.8km)
11 Feb
230 days 17 hours
4310 earthquakes
S20200219.2(14.2km)
18 Feb
3 days 4 hours
87 earthquakes
27 Feb
7 days 2 hours
113 earthquakes
S20200307.1(10.2km)
6 Mar
10 days 22 hours
145 earthquakes
S20200309.1(17.5km)
8 Mar
12 days 22 hours
242 earthquakes
23 Mar
6 days 13 hours
82 earthquakes
S20200403.1(17.0km)
2 Apr
3 days 6 hours
67 earthquakes
S20200423.1(12.0km)
22 Apr
2 days 13 hours
45 earthquakes
8 May
3 days 23 hours
49 earthquakes
S20200521.1(17.1km)
20 May
4 days 3 hours
97 earthquakes
S20200527.1(17.6km)
26 May
3 days 23 hours
82 earthquakes
S20200604.2(20.6km)
3 Jun
5 days 19 hours
148 earthquakes
S20200613.1(12.5km)
12 Jun
15 days 8 hours
334 earthquakes
S20200708.3(25.9km)
7 Jul
13 days 9 hours
239 earthquakes
S20200822.1(14.9km)
21 Aug
4 days 6 hours
66 earthquakes
S20200827.1(15.2km)
26 Aug
25 days 23 hours
356 earthquakes
S20201003.1(18.3km)
2 Oct
25 days 20 hours
320 earthquakes
S20201010.1(13.8km)
9 Oct
3 days 6 hours
59 earthquakes
S20201113.2(21.7km)
12 Nov
13 days 17 hours
181 earthquakes
2021
S20210213.1(13.0km)
12 Feb
1 day 17 hours
29 earthquakes
S20210404.1(28.4km)
3 Apr
11 days 13 hours
124 earthquakes
S20210412.1(19.4km)
11 Apr
2 days 3 hours
33 earthquakes
15 Jun
4 days 20 hours
83 earthquakes
S20210820.2(16.2km)
19 Aug
19 days 14 hours
212 earthquakes
S20211018.1(22.5km)
17 Oct
1 day 7 hours
27 earthquakes
29 Oct
3 days 9 hours
48 earthquakes
18 Dec
13 days 0 hours
143 earthquakes
2022
S20220126.1(15.2km)
25 Jan
2 days 8 hours
59 earthquakes
S20220204.1(13.8km)
3 Feb
3 days 0 hours
45 earthquakes
S20220608.1(16.2km)
7 Jun
1 day 20 hours
34 earthquakes
2023
S20230503.1(25.4km)
2 May
1 day 6 hours
32 earthquakes
2024
S20240416.2(12.4km)
15 Apr
2 days 15 hours
51 earthquakes
S20240811.1(14.2km)
10 Aug
5 days 16 hours
78 earthquakes
AI-generated article — for informational and entertainment purposes only. May contain inaccuracies. Full disclaimerFound an error?

Seismic Swarm S20130321.1: Analysis of Activity Near Little Lake, California

An earthquake swarm designated S20130321.1 occurred in a tectonically active region 22 km east of Little Lake, California. The sequence began at 18:25 on 20 March 2013 and concluded at 09:43 on 25 March 2013, spanning 111 hours and 18 minutes. During this period, 80 earthquakes were recorded, with the majority exhibiting low magnitudes and shallow focal depths.

The swarm unfolded in a zone influenced by the Eastern California Shear Zone, where distributed right-lateral strike-slip faulting accommodates Pacific-North American plate motion. Nearby geological features include the Coso Volcanic Field, which features geothermal activity and young volcanic rocks that can modulate local stress fields and contribute to clustered seismicity. Depths in the recorded events ranged predominantly from 0 to 2 km, with one outlier at 9 km, consistent with shallow crustal processes often observed in this part of the Mojave Desert transition.

Event magnitudes remained modest, peaking at 2.7 on 21 March 2013 at 10:07:05. Most events registered below magnitude 1.0, reflecting the typical character of swarms driven by fluid migration or aseismic slip rather than a single large rupture. Temporal distribution showed the highest activity on 21 March, followed by a gradual decline through 25 March.

Historical records indicate that this area has experienced recurrent swarms. Since 1 January 2000, 38 such sequences have been identified, distributed across years as follows: 2000 (4), 2001 (4), 2002 (2), 2004 (7), 2005 (2), 2006 (6), 2009 (1), 2010 (7), 2011 (1), and 2012 (4). These patterns underscore the persistent seismic productivity of the region, often linked to its complex fault network and hydrothermal influences.

Overall, swarm S20130321.1 exemplifies the low-magnitude, high-frequency seismicity that characterizes this portion of California, providing data for ongoing monitoring of crustal deformation and volcanic-tectonic interactions.

References

  • SeismoSight internal swarm classification records
  • USGS Earthquake Catalog (general regional context)