Access Data

Special Data Sets

Useful Test Events for Earthquake Early Warning and General Seismological Algorithm Testing


The tables below shows a community-derived list of historic U.S. earthquakes, scenario earthquakes, and anomalous events that can be used for testing EEW as well as general seismological algorithms.

The last column indicates the directory in which each individual event's files can be found. Available files consist of the event tankfile (indicated by same prefix as directory name and ".tnk" suffix), and channel configuration file (indicated by same prefix as directory name and ".dat" suffix). Subfolders contain mseed files corresponding to each station-channel where channels include HH* and HN*. For the California, Oregon, and Washington earthquakes, waveform files begin two minutes before main shock origin time and are a total of seven minutes long.

This archive is not comprehensive and is frequently evolving. Use at your own risk.


Historic Earthquakes, Southern California

event ID event name / closest city event parameters (origin time UTC, location, depth, magnitude) directory
9108652 Hector Mine 1999/10/16  09:46:44.127
34.5940 -116.2710
0.02 km
M7.10
19991016_hectormine  
9818433 Yorba Linda 2002/09/03  07:08:51.870
33.9173 -117.7758
12.92 km M4.75
20020903_yorbalinda
13935988 Big Bear 2003/02/22  12:19:10.580
34.3098 -116.848
1.23 km
M4.99
20030222_bigbear  
9983429 Wheeler Ridge 2004/02/14  12:43:11.380
35.0385 -119.1315
11.66 km
M4.34
20040214_wheelerridge  
14065544 Offshore: 42 mi SE of San Clemente Island 2004/06/15  22:28:48.160
32.3287 -117.9175
10.0 km
M4.98
20040615_offshore1
14116972 Fontana swarm 2005/01/06  14:35:27.670
34.1250 -117.4387
4.15 km
M4.42
20050106_fontanaswarm
14138080 13.4 mi W of Wheeler Ridge 2005/04/16  19:18:13.550
35.0272 -119.1783
10.3 km
M4.59
20050416_wheelerridge2
14151344 5.6 mi ESE of Anza 2005/06/12  15:41:46.540
33.5288 -116.5727
14.2 km
M5.2
20050612_anza
14178184 0.8 mi SSE of Obsidian Butte 2005/08/31 22:47:45.640
33.1648 -115.6357
4.0 km
M4.59
20050831_obsidianbutte
14179736 0.7 mi S of Obsidian Butte 2005/09/02  01:27:19.810
33.1598 -115.6370
9.8 km
M5.11
20050902_obsidianbutte2
14383980 Chino Hills 2008/07/29  18:42:15.710
33.9530 -117.7613
14.7 km
M5.39
20080729_chinohills
14607652 El-Mayor Cucapah 2010/04/04  22:40:42.360
32.2862 -115.2953
10.0 km
M7.2  
20100404_El-MayorCucapah
10736069 Collins Valley 2010/07/07  23:53:33.530
33.4205 -116.4887
14.0 km
M5.43
20100707_CollinsValley
15296281 Anza 2013/03/11  16:56:06.040
33.5025 -116.4572
13.1 km
M4.7
20130311_anza2
15350729   Offshore Isla Vista 2013/05/29  14:38:03.27
34.413 -119.926  
8.0  km
M4.80 
20130529_offshoreislavista
15481673 La Habra 2014/03/29  04:09:42.31
33.932 -117.917  
4.8  km
M5.10
20140329_lahabra
15520985   Big Bear 2014/07/05  16:59:34.07
34.280 -117.028  
8.7  km
M4.58   
20140705_bigbear2
39281440 Barstow 2020/01/24  19:03:34.24
35.097 -116.970  
3.1  km
M4.6   
20200125_barstow
39126079 Anza 2020/04/04  01:53:18.92
33.490 -116.507  
10.4  km
M4.9   
20200403_anza3
39493944   Lone Pine 2020/06/24  10:40:49.24
36.447 -117.975  
4.7  km
M5.8   
20200624_lone_pine2

Historic Earthquakes, Northern California

event ID event name/ closest city event parameters (origin time UTC, location, magnitude) filename
9966449 San Simeon 2003/12/22 19:15:56.240
35.7005 -121.1005
8.7 km
M6.50
20031222_sansimeon
51146343 Adobe Hills Swarm (east of Mono Lake) 2004/09/18 23:02:17.750
38.0095 -118.6785
5.49 km
M5.4
20040918_adobehills_swarm
30228270 Parkfield 2004/09/28 17:15:24.250
35.8182 -120.3660
8.58 km
M5.97
20040928_parkfield
40204628 Alum Rock 2007/10/31 03:04:54.810
37.4335 -121.7743
10.11 km
M5.45
20071031_alumrock
71338066 Offshore Ferndale 2010/01/10 00:27:39.32
40.65200 -124.69250
29.33 km
M6.50
20100110_offshoreferndale
71863625 SAF near King City 2012/10/21 06:55:09.51
36.30967 -120.85600
9.180km
M5.29
20121021_safnearkingcity
71996906 Canyondam 2013/05/24 03:47:08.18
40.1918 -121.0595
9.69 km
M5.69
20130524_canyondam  
72145230 Offshore Ferndale 2014/01/23 04:10:41.19
40.4110 -125.3412
23.8 km M4.63
20140123_offshoreferndale2
72157621 San Simeon 2014/02/06 19:42:21.03
35.5260 -121.2710
3.04 km
M4.13
20140206_sansimeon2
72182046 Offshore Eureka 2014/03/10 05:18:13.43
40.82867 -125.13383
16.640 km
M6.80
20140310_offshoreeureka
72282711 South Napa 2014/08/24 10:20:44.06
38.21550 -122.31167
11.25 km
M6.02
20140824_southnapa

Known problematic teleseismic and regional events

event id # event location NEIC event parameters (origin time UTC, location, depth, magnitude) start time of waveform files filename
NN ev id: 00495477 37 km SSW of Caliente, Nevada 2015-05-22 18:47:42
37.292 -114.655
4.0 km
M5.3
2015-05-2218:46:00 20150522_tele_caliente
SCSN ev id: 37249669 99 km NNW of Chirikof Island, Alaska 2015-05-2907:00:09
56.594 -156.430
72.6 km M6.7
2015-05-2907:03:00 20150529_tele_alaska
SCSN ev id: 15245759 Sonora, Mexico 2009-08-0317:59:56
29.039 -112.903
10.0 km
M6.9
2009-08-0317:59:00 20090803_tele_sonora
SCSN ev id: 37047036 Gulf of California, Baja California, Mexico 2012-04-12 07:15:48
28.696 -113.104
13.0 km
M7.0
20120412_tele_baja
37103220 off the west coast of Baja California 2012-12-14 10:36:01
31.095 -119.660
13.0 km
M6.3
2012-12-14 10:34:00 20121214_tele_baja2
12330867 Nevada 2008-02-21 14:16:02
41.153 -114.867
6.7 km
M6.0
2008-02-21 14:15:00 20080221_tele_nevada
37205293 50 km WNW of Lordsburg, New Mexico 2014-06-29 04:59:35
32.582 -109.168
6.4 km
M5.3
2014-06-29 04:58:00 20140629_tele_newmexico
37176453 246 km SSW of Avalon, California 2014-03-05 02:24:23
31.323 -119.409
7.2 km
M4.6
2014-03-05 02:23:00 20140305_tele_avalon
10781413 Utah 2010-08-18 12:52:31
37.640 -113.220
6.4 km
M3.6
2010-08-18
12:51:00
20100818_tele_utah

Teleseismic events (2000-2015) that are largest magnitude and within 10,000 km of center of southern California

event id event location NEIC event parameters (origin time UTC, location, depth, magnitude) start time of waveform files download
36948327 near the east coast of Honshu, Japan 2011-03-11 05:46:24
38.297 142.373
29.0 km
M9.0
2011-03-11 05:55:00 20110311_tele_japan
28101759 Offshore Bio-Bio, Chile 2010-02-27 06:34:11
-36.122 -72.898
22.9 km
M8.8
2010-02-27 06:44:00 20100227_tele_chile
13993864 Hokkaido, Japan region 2003-09-25 19:50:06
41.815 143.910
27.0 km
M8.3
2003-09-25 19:58:00 20030925_tele_hokkaido
10083910 Kuril Islands 2006-11-15 11:14:13
46.592 153.266
10.0 km
M8.3
2006-11-15 11:22:00 20061115_tele_kuril
37142283 Sea of Okhotsk 2013-05-24 05:44:48
54.892 153.221
598.1 km
M8.3
2013-05-24 05:51:00 20130524_tele_seaokhotsk3
37184149 94 km NW of Iquique, Chile 2014-04-01   23:46:47
-19.610 -70.769
25.0 km
M8.2
2014-04-01 23:55:00 20140401_tele_chile2
10084186 east of the Kuril Islands 2007-01-13 04:23:21
46.243 154.524
10.0 km
M8.1

2007-01-13 04:31:00

20070113_tele_kuril2
12290527 near the coast of central Peru 2007-08-15 23:40:57
-13.386 -76.603
39.0 km
M8.0
2007-08-15 23:49:00 20070815_tele_peru
17917759 Samoa Islands region 2009-09-29 17:48:10
-15.489 -172.095
18.0 km
M8.1
2009-09-29 17:57:00 20090929_tele_samoa
37106252 76 km west of Lata, Solomon Islands 2013-02-06 01:12:25
-10.799 165.114
24.0 km
M8.0
2013-02-06 01:21:00 20130206_tele_solomonislands

Teleseismic events (2000-2015) that are deep and within 10,000 km of center of southern California

SCSN
event id#
event location NEIC event parameters (origin time UTC, location, depth, magnitude) start time of waveform files filename
14153808 Tarapaca, Chile 2005-06-13 22:44:33
-19.987 -69.197
115.6 km
M7.8
2005-06-13 22:53:00 20050613_tele_tarapecachile
37204965 19 km southeast of Little Sitkin Island, Alaska 2014-06-23 20:53:09
51.849 178.735
109.0 km
M7.9
2014-06-23 20:58:00 20140623_tele_sitkinalaska
12328359 south of the Fiji Islands 2007-12-09 07:28:20
-25.996 -177.514
152.5 km
M7.8
2007-12-09 07:38:00 20071209_tele_southfiji2
37249685 189 km WNW of Chichi-shima, Japan 2015-05-30 11:23:02
27.839 140.493
664.0 km
M7.8
2015-05-30 11:31:00 20150530_tele_chichijapan
9539753 Volcano Islands, Japan region 2000-03-28 11:00:22
22.338 143.730
126.5 km
M7.6
2000-03-28 11:10:00 20000328_tele_volcanojapan
9811437 south of Fiji Islands 2002-08-19 11:08:24
-23.884 178.495
675.4 km
M7.7
2002-08-19 11:17:00 20020819_tele_southfiji
12335627 Sea of Okhotsk 2008-07-05 02:12:04
53.882 152.886
632.8 km
M7.7
2008-07-05 02:18:00 20080705_tele_seaokhotsk
37087236 Sea of Okhotsk 2012-08-14 02:59:38
49.800 145.064
583.2 km
M7.7
2012-08-14 03:06:00 20120814_tele_seaokhotsk2
9145034 Volcano Islands, Japan region 2000-03-28 11:00:22
22.338 143.730
126.5 km
M7.6
2000-03-28 11:10:00   20000328_tele_volcanojapan
13911524 northwest of the Kuril Islands 2002-11-17 04:53:53
47.824 146.209
459.1 km
M7.3
2002-11-17 05:01:00 20021117_tele_kurilislands
14187824 northern Peru 2005-09-26 01:55:37
-5.678 -76.398
115.0 km
M7.5
2005-09-26 02:02:00 20050926_tele_northperu

Calibration Pulses - Southern California

event name type UTC time duration affected channels download
box1 Calibration test 2013/08/1615:54:00.000 10 minutes total;
2 minutes pre-event
CE.35078.HN%.10
CE.35110.HN%.10
CE.35342.HN%.10
CE.36014,HN%.10
20130816_box1
box2 Calibration test 2014/09/0815:40:00.000 10 minutes total; 2 minutes pre-event CE.35078
CE.35342
CE.36014
20140908_box2
recenter- ing Recentering pulses 2014/11/0613:26:00.000 45 mins total GATR, SLR, SRI, SWS 20141106_recentering

Calibration Pulses - Northern California

Event name Type UTC time duration affected channels download
cal1 calibration test 2014/10/1022:33:00 6 hours KCC HH* 20141010_cal1
cal2 calibration test 2014/10/0421:23:00 5 hours BKS HH* 20141004_cal2
cal3 calibration test 2014/10/0403:53:00 5 hours SAO HH* 20141004_cal3
cal4 calibration test 2014/09/1917:54:00 5 hours BKS HH* 20140919_cal4
cal5 calibration test 2014/09/1822:59:00 5 hours CMB HH* 20140918_cal5
cal6 calibration test 2014/08/1221:43:00 6 hours HOPS HH* 20140812_cal6
cal7 calibration test 2014/08/1123:38:00 5 hours YBH HH* 20140811_cal7
cal8 calibration test 2014/08/0900:42:00 2 hours BKS HH* 20140809_cal8
rec_01 recentering pulse 2014/02/1019:15:00 14 mins BRIB HH* 20140210_rec_01
rec_02 recentering pulse

2014/02/1321:50:00

14 mins BRIB HH* 20140213_rec_02
rec_03 recentering pulse 2014/07/2421:54:00 14 mins BRIB HH* 20140724_rec_03
rec_04 recentering pulse 2014/09/0515:50:00 14 mins CVS HH* 20140905_rec_04
rec_05 recentering pulse 2014/09/1018:11:00 20 mins CVS HH* 20140910_rec_05
rec_06 recentering pulse 2014/10/0623:10:00 14 mins HAST HH* 20141006_rec_06
rec_08 recentering pulse 2014/07/2823:16:00 14 mins JCC HH*

20140728_rec_08

rec_10 recentering pulse 2014/10/1621:00:00 14 mins MNRC HH* 20141016_rec_10
rec_12 recentering pulse 2014/03/1917:42:00 14 mins SUTB HH* 20140319_rec_12
rec_13 recentering pulse 2014/07/2423:47:00 20 mins SUTB HH* 20140724_rec_13
rec_14 recentering pulse 2014/09/0318:55:00 10 mins SUTB HH* 20140903_rec_14
rec_16 recentering pulse 2014/10/0819:25:00 10 mins TRAM HH* 20141008_rec_16
rec_17 recentering pulse 2014/06/2320:49:00 10 mins TSCN HH* 20140623_rec_17
rec_18 recentering pulse 2014/07/2423:24:00 10 mins VAK HH* 20140724_rec_18
pge_anom PGE network anomaly 2015/07/01
00:52:00
28 mins PG.ARD, PG.CSD, PG.DCD,
PG.LMD, PG.LSD, PG.MLD,
PG.PBD, PG.PSD, PG.VPD,
PG.WRD
20150701_pge

Historic Earthquakes, Pacific Northwest (Oregon, Washington)

event name/ closest city event parameters (origin time UTC, location, depth, magnitude) download
Nisqually, WA 2001/02/2818:54:32.00
47.149 -122.727
51.9km
M6.8
20010228_nisqually
Offshore Oregon 2004/07/1216:45:00.73
44.329 -124.490
29.0
km
M4.9
20040712_offshore_oregon1
Offshore Northen California 2005/06/15 02:50:00
41.292 -125.953
16.0 km
M7.2
20050615_gorda_plate
Cowlitz Chimneys, WA 2006/10/0802:48:26.65
46.85 -121.6
3.8km
M4.7
20061008_cowlitz_chimneys
Maupin, OR 2008/07/1418:45:55
45.127 -120.950
20.9 km
M4.2
20080714_maupin
Puget Sound Region, WA 2008/07/3105:02:43.12
48.154 -122.747
55.9km
M4.0
20080731_puget_sound
Offshore Oregon 2010/07/2816:12:05.61
43.756 -125.815
10.0 km
M5.2
20100728_offshore_oregon2
Mt. St. Helens area, WA 2011/02/1418:35:25.74
46.282 -122.212
5.6km
M3.8
20110214_mt_st_helens
Vancouver Island, Canada 2011/09/0919:41:34.15
49.535 -126.893
22.0km
M6.4
20110909_vancouver_island
Near Leavenworth, WA 2013/06/2702:45:35.90
47.824 -120.689
7.5 km
M4.3
20130627_leavenworth
near Vancouver Island, Canada 2013/08/0413:22:27.64
49.661 -127.429
10.0 km
M5.5
20130804_off_vancouver_island1
Near Vancouver Island, WA 2014/04/2403:10:15
49.6388 -127.7316
10.0 km
M6.5
20140424_off_vancouver_island2

Pacfic Northwest Anomalous Signals

event name type UTC time duration affected channels download
20161013_anomalous1 Noisy and dead strong-motion channel(s) 2016/10/13 14:55:20.802 7 minutes BABR ENZ BSFP ENZ 20161013_anomalous1
20161018_anomalous2 Noisy and dead strong-motion channel(s) 2016/10/18 22:25:42.448 7 minutes BABR ENZ BSFP ENZ 20161018_anomalous2
20161019_anomalous3 Noisy and dead strong-motion channel(s) 2016/10/19 20:55:16.235 7 minutes BABR ENZ BSFP ENZ 20161019_anomalous3
20161024_anomalous4 Noisy and dead strong-motion channel(s) 2016/10/24 21:12:22.590 7 minutes BABR ENZ REED HNZ 20161024_anomalous4
20161026_anomalous5 Noisy and dead strong-motion channel(s) 2016/10/26 16:44:24.647 7 minutes BABR ENZ BSFP ENZ 20161026_anomalous5
20161026_anomalous6 Noisy and dead strong-motion channel(s) 2016/10/26 21:17:09.129 7 minutes BABR ENZ BSFP ENZ 20161026_anomalous6
20161031_anomalous7 Noisy and dead strong-motion channel(s) 2016/10/31 09:58:45.307 7 minutes BABR ENZ REED HNZ 20161031_anomalous7
20161031_anomalous8 Noisy and dead strong-motion channel(s) 2016/10/31 14:53:46.477 7 minutes BABR ENZ BSFP ENZ 20161031_anomalous8
20161005_anomalous9 Anomalous signal due to waveform processing restart 2016/10/05 17:32:04.925 7 minutes BEVT ENZ SMNR ENZ BABE ENZ PAYL ENZ 20161005_anomalous9
20170101_anomalous10 Anomalous signal due to leap second correction 2017/01/01 09:58:45.307 7 minutes JEDS ENZ
TBPA ENZ
20170101_anomalous10

Simulated Waveforms

event name simulation event parameters remarks download
Hayward-hs+hn_gp14.3_hypoF 37.5143 -121.9176
Depth 8.17 km
M7.1
Type: strike-slip
Hayward Fault
Rupture length: 84 km
Excluding Northern California GPS stations currently. Hayward-hs+hn_gp14.3_hypoF
Hayward-hs+hn_gp14.3_hypoO_no-shal-weak 37.8221-122.1772
Depth 8.96 km
M7.1
Type: strike-slip
Hayward Fault
Rupture length: 84 km
Excluding Northern California GPS stations currently. Hayward-hs+hn_gp14.3_hypoO_no-shal-weak
Hayward-hs+hn_r04_hypoO 37.8059-122.1799
Depth 7.80 km
M7.1
Type: strike-slip
Hayward Fault
Rupture length: 84 km
Excluding Northern California GPS stations currently. Hayward-hs+hn_r04_hypoO
ShakeOut-gp2010v3.2 33.4063-115.7841
Depth 9.75 km
M7.8
Type: strike-slip San Andreas Fault
Rupture length: 304 km
Excluding Northern California GPS stations currently Artificial network code: ‘SM’ Velocity (HH%) waveform simulations; acceleration (HN%) and downsampled displacement (LY%; 1Hz) time series derived through differentiation and integration; Broadband records available. ShakeOut-gp2010v3.2
ShakeOut-v1.2.0 33.3459-115.7077
Depth 7.31 km
M7.8
Type: strike-slip
San Andreas Fault
Rupture length: 304 km
Excluding Northern California GPS stations currently Artificial network code: ‘SM’ Velocity (HH%) waveform simulations; acceleration (HN%) and downsampled displacement (LY%; 1Hz) time series derived through differentiation and integration; Broadband records available. ShakeOut-v1.2.0