Magnitude 2.8
Depth 7.2 km
6km SSW of San Ramon, CA
37.730°N 121.991°W
June 30, 2021 08:49:46 UTC
East/West Sensor Heliograph
Magnitude 3.9
Depth 10.6 km
3km N of San Lorenzo, CA
37.706°N 122.122°W
June 29, 2021 01:29:48 UTC
North/South Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 3.9 Earthquake)
Magnitude 2.6
Depth 6.6 km
2km ENE of Hayward, CA
37.650°N 122.055°W
June 19, 2021 02:43:16 UTC
East/West Sensor Heliograph
Magnitude 3.4
Depth 3.6 km
7km WNW of The Geysers, CA
38.805°N 122.828°W
June 14, 2021 03:16:24 UTC
East/West Sensor Heliograph
Magnitude 3.3
Depth 7.0 km
4km NNW of Aromas, CA
36.926°N 121.663°W
June 11, 2021 10:45:53 UTC
North/South Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 3.3 Earthquake)
Magnitude 5.3
Depth 5.8 km
11km W of Calipatria, CA
33.140°N 115.635°W
June 5, 2021 17:55:58 UTC
East/West Sensor Heliograph
Magnitude 3.6
Depth 6.0 km
9km E of Alum Rock, CA
37.368°N 121.730°W
June 3, 2021 12:15:32 UTC
North/South Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 2.8 Earthquake)
Magnitude 3.6
Depth 9.1 km
3km NE of Pinnacles, CA
36.550°N 121.115°W
June 3, 2021 04:34:42 UTC
East/West Sensor Heliograph
Magnitude 4.2
Depth -2.0 km
8km SE of Dollar Point, CA
39.136°N 120.044°W
May 28, 2021 15:25:22 UTC
North/South Sensor Heliograph
Magnitude 4.7
Depth 10.1 km
19km NW of Truckee, CA
39.461°N 120.315°W
May 7, 2021 04:35:14 UTC
East/West Sensor Heliograph
Magnitude 2.8
Depth 5.4 km
2km N of Piedmont, CA
37.846°N 122.235°W
April 28, 2021 07:18:37 UTC
East/West Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 2.8 Earthquake)
Magnitude 3.6
Depth 6.5 km
15km N of Morgan Hill, CA
37.268°N 121.642°W
April 25, 2021 04:59:28 UTC
North/South Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 3.6 Earthquake)
Magnitude 3.1
Depth 5.2 km
3km SW of San Juan Bautista, CA
36.829°N 121.563°W
April 21, 2021 03:55:27 UTC
North/South Sensor Heliograph
Magnitude 4.0
Depth 2.9 km
3km SW of Anderson Springs, CA
38.757°N 122.723°W
April 19, 2021 18:50:58 UTC
East/West Sensor Heliograph
Magnitude 3.4
Depth 7.4 km
7km S of Calistoga, CA
38.520°N 122.589°W
April 10, 2021 14:13:21 UTC
East/West Sensor Heliograph
Magnitude 3.0
Depth 3.8 km
14km SE of Livermore, CA
37.582°N 121.674°W
April 10, 2021 11:50:14 UTC
East/West Sensor Heliograph
Magnitude 3.4
Depth 7.2 km
6km S of San Juan Bautista, CA
36.795°N 121.527°W
March 31, 2021 13:44:03 UTC
North/South Sensor Heliograph
Magnitude 2.6
Depth 7.3 km
7km E of Alum Rock, CA
37.367°N 121.750°W
March 30, 2021 05:43:48 UTC
East/West Sensor Heliograph
Magnitude 4.0
Depth 8.2 km
21km SSW of Willits, CA
39.245°N 123.474°W
March 24, 2021 15:41:13 UTC
Magnitude 3.3
Depth 7.8 km
9km E of Gilroy, CA
37.003°N 121.465°W
March 24, 2021 23:07:08 UTC
North/South Sensor Heliograph
Magnitude 3.7
Depth 1.2 km
22km SSE of Lopez Point, CA
35.842°N 121.468°W
February 28, 2021 08:45:38 UTC
North/South Sensor Heliograph
Magnitude 3.8
Depth 6.9 km
9km ENE of Gilroy, CA
37.045°N 121.481°W
February 22, 2021 01:38:13 UTC
North/South Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 3.8 Earthquake)
Magnitude 2.6
Depth 3.8 km
1km ENE of Union City, CA
37.599°N 122.007°W
February 17, 2021 09:13:36 UTC
East/West Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 2.6 Earthquake)
Magnitude 3.2
Depth 4.6 km
10km NE of Milpitas, CA
37.497°N 121.825°W
February 8, 2021 00:45:33 UTC
East/West Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 3.2 Earthquake)
Magnitude 3.0
Depth 15.4 km
1km W of Concord, CA
37.969°N 122.027°W
January 22, 2021 00:48:11 UTC
North/South Sensor Heliograph
Magnitude 2.0
Depth 4.9 km
2km S of Los Altos Hills, CA
37.360°N 122.142°W
January 21, 2021 08:21:54 UTC
North/South Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 2.0 Earthquake)
Magnitude 2.2
Depth 4.7 km
2km S of Los Altos Hills, CA
37.361°N 122.135°W
January 18, 2021 09:01:37 UTC
East/West Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 2.2 Earthquake)
Magnitude 4.2
Depth 7.9 km
4km SE of Aromas, CA
36.868°N 121.611°W
January 17, 2021 04:01:27 UTC
North/South Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 4.2 Earthquake)
Magnitude 3.6
Depth 15.2 km
2km W of Concord, CA
37.971°N 122.041°W
January 14, 2021 19:18:10 UTC
North/South Sensor Heliograph
Magnitude 3.1
Depth 9.0 km
8km NE of Alum Rock, CA
37.428°N 121.771°W
January 7, 2021 11:44:06 UTC
North/South Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 3.1 Earthquake)
Magnitude 3.3
Depth 5.0 km
0 km N of Gonzales, California
36.515°N 121.443°W
January 3, 2021 05:21:56 UTC
East/West Sensor Heliograph
Magnitude 4.3
Depth 6.4 km
10km NW of Pinnacles, CA
36.608°N 121.213°W
January 2, 2021 14:42:23 UTC
North/South Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 4.3 Earthquake)
Magnitude 3.6
Depth 14.4 km
7km S of Muir Beach, CA
37.800°N 122.592°W
December 31, 2020 13:41:58 UTC
East/West Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 3.6 Earthquake)
Magnitude 3.6
Depth 2.1 km
9km WNW of Cobb, CA
38.839°N 122.823°W
December 31, 2020 04:22:03 UTC
East/West Sensor Heliograph
Magnitude 2.8
Depth 5.6 km
2km S of Los Altos Hills, CA
37.357°N 122.137°W
December 30, 2020 04:26:30 UTC
East/West Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 2.8 Earthquake)
Magnitude 3.2
Depth 3.6 km
4km W of San Juan Bautista, CA
36.843°N 121.578°W
December 27, 2020 19:05:47 UTC
East/West Sensor Heliograph
Magnitude 3.7
Depth 5.6 km
10km ENE of Morgan Hill, CA
37.165°N 121.552°W
December 15, 2020 14:58:40 UTC
East/West Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 3.7 Earthquake)
Magnitude 4.9
Depth 6.4 km
26 km S of Mina, Nevada
38.150°N 118.101°W
December 12, 2020 07:50:52 UTC
North/South Sensor Heliograph
Magnitude 4.4
Depth 8.6 km
13km W of Lakeport, CA
39.034°N 123.067°W
December 6, 2020 15:03:33 UTC
North/South Sensor Heliograph
Magnitude 3.3
Depth 7.4 km
11km SW of Ridgemark, CA
36.745°N 121.450°W
December 4, 2020 03:18:25 UTC
Magnitude 3.5
Depth 2.4 km
7km NW of The Geysers, CA
38.821°N 122.808°W
December 4, 2020 10:45:06 UTC
East/West Sensor Heliograph
Magnitude 4.9
Depth 5.0 km
24 km S of Mina, Nevada
38.175°N 118.065°W
December 3, 2020 05:15:29 UTC
East/West Sensor Heliograph
Magnitude 4.4
Depth 4.3 km
24 km S of Mina, Nevada
38.175°N 118.073°W
December 2, 2020 02:23:45 UTC
Magnitude 4.4
Depth 4.1 km
24 km S of Mina, Nevada
38.169°N 118.071°W
December 2, 2020 04:49:28 UTC
North/South Sensor Heliograph
Magnitude 5.1
Depth 5.0 km
25 km S of Mina, Nevada
38.164°N 118.084°W
December 1, 2020 23:32:56 UTC
East/West Sensor Heliograph
Magnitude 5.3
Depth 4.8 km
33 km SE of Mina, Nevada
November 13, 2020 09:13:51 UTC
North/South Sensor Heliograph
Magnitude 3.4
Depth 6.5 km
5km S of San Juan Bautista, CA
November 11, 2020 20:26:59 UTC
East/West Sensor Heliograph
Magnitude 7.5
Depth 40.1 km
91 km SE of Sand Point, Alaska
October 19, 2020 20:54:40 UTC
North/South Sensor Heliograph
Magnitude 2.7
Depth 7.6 km
7km N of Boulder Creek, CA
October 11, 2020 16:36:46 UTC
East/West Sensor Heliograph
Magnitude 2.9
Depth 4.4 km
10km NE of Milpitas, CA
October 2, 2020 15:39:59 UTC
North/South Sensor Heliograph
Magnitude 4.9
Depth 11.5 km
4km NE of Westmorland, CA
October 1, 2020 00:31:27 UTC
East/West Sensor Heliograph
Magnitude 2.6
Depth 8.5 km
10km NNE of Milpitas, CA
September 30, 2020 08:38:37 UTC
East/West Sensor Heliograph
Magnitude 2.9
Depth 4.9 km
10km NE of Milpitas, CA
September 29, 2020 15:36:09 UTC
Magnitude 3.3
Depth 4.6 km
10km NE of Milpitas, CA
September 29, 2020 16:02:30 UTC
East/West Sensor Heliograph
Magnitude 3.3
Depth 7.4 km
10km S of Tres Pinos, CA
September 29, 2020 02:22:20 UTC
East/West Sensor Heliograph
Magnitude 3.4
Depth 4.4 km
10km NE of Milpitas, CA
September 28, 2020 05:16:26 UTC
East/West Sensor Heliograph
Magnitude 3.4
Depth 4.8 km
10km NE of Milpitas, CA
September 27, 2020 22:54:06 UTC
East/West Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 3.4 Earthquake)
Magnitude 4.5
Depth 16.9 km
3km WSW of South El Monte, CA
September 19, 2020 06:38:46 UTC
East/West Sensor Heliograph
Magnitude 4.0
Depth 3.8 km
18 km SSE of Lone Pine, CA
September 11, 2020 07:55:45 UTC
North/South Sensor Heliograph
Magnitude 2.6
Depth 9.4 km
3 km ESE of San Leandro, CA
September 6, 2020 18:36:03 UTC
Magnitude 3.4
Depth 10.1 km
3 km ESE of San Leandro, CA
September 6, 2020 18:43:57 UTC
East/West Sensor Heliograph
Voltage Counts & Frequency for All Sensors (Magnitude 3.4 Earthquake)
Magnitude 4.8
Depth -0.6 km
36 km WSW of Stovepipe Wells, CA
August 19, 2020 17:32:11 UTC
East/West Sensor Heliograph
Magnitude 3.8
Depth 8.2 km
11 km ESE of Willits, CA
August 19, 2020 00:55:23 UTC
Magnitude 4.0
Depth 7.6 km
11 km ESE of Willits, CA
August 19, 2020 01:59:33 UTC
North/South Sensor Heliograph
Magnitude 3.3
Depth 4.2 km
10 km NE of Milpitas, CA
August 17, 2020 20:27:49 UTC
East/West Sensor Heliograph
Magnitude 3.9
Depth 4.1 km
1 km NNE of The Geysers, CA
August 12, 2020 11:45:43 UTC
North/South Sensor Heliograph
Magnitude 3.0
Depth 9.0 km
8 km NE of Alum Rock, CA
August 2, 2020 12:40:24 UTC
East/West Sensor Heliograph
Voltage Counts & Frequency for All Sensors
Magnitude 3.9
Depth 8.7 km
22 km NE of San Ardo, CA
July 30, 2020 03:23:01 UTC
East/West Sensor Heliograph
Magnitude 2.6
Depth 8.4 km
11 km ENE of Milpitas, CA
July 26, 2020 06:53:28 UTC
North/South Sensor Heliograph
Magnitude 3.3
Depth 4.8 km
12 km S of Tres Pinos, CA
July 22, 2020 04:57:09 UTC
Magnitude 7.8
Depth 28.0 km
105 km SSE of Perryville, Alaska
July 22, 2020 06:12:44 UTC
North/South Sensor Heliograph
Magnitude 4.5
Depth 5.6 km
29 km SE of Mina, Nevada
July 6, 2020 06:12:54 UTC
East/West Sensor Heliograph
Magnitude 4.0
Depth 0.7 km
2 km NW of The Geysers, CA
July 5, 2020 16:14:07 UTC
East/West Sensor Heliograph
Magnitude 5.0
Depth 8.3 km
29 km SSE of Mina, Nevada
June 30, 2020 09:24:23 UTC
North/South Sensor Heliograph
Magnitude 5.8
Depth 2.9 km
17 km SSE of Lone Pine, CA
June 24, 2020 17:40:49 UTC
Magnitude 4.6
Depth 9.6 km
19 km SE of Lone Pine, CA
June 24, 2020 17:59:19 UTC
East/West Sensor Heliograph
Magnitude 4.6
Depth 2.3 km
17 km SSE of Lone Pine, CA
June 23, 2020 00:25:46 UTC
Magnitude 2.8
Depth 9.4 km
3 km W of Portola Valley, CA
June 23, 2020 03:09:20 UTC
East/West Sensor Heliograph
Magnitude 4.9
Depth 6.5 km
34 km SE of Mina, Nevada
June 19, 2020 20:42:21 UTC
North/South Sensor Heliograph
Magnitude 3.6
Depth 7.4 km
8 km NE of Alum Rock, CA
June 17, 2020 17:35:02 UTC
North/South Sensor Heliograph
Voltage Counts & Frequency for All Sensors
Magnitude 3.5
Depth 5.8 km
10 km SW of Tres Pinos, CA
June 10, 2020 13:25:46 UTC
East/West Sensor Heliograph
Magnitude 4.8
Depth 5.2 km
34 km SE of Mina, Nevada
June 8, 2020 03:24:05 UTC
North/South Sensor Heliograph
Magnitude 3.3
Depth 6.5 km
6 km E of Interlaken, CA
June 5, 2020 23:09:19 UTC
East/West Sensor Heliograph
Magnitude 5.5
Depth 8.4 km
17 km S of Searles Valley, CA
June 4, 2020 01:32:11 UTC
Magnitude 4.2
Depth 2.0 km
12 km NNW of Coso Junction, CA
June 4, 2020 02:27:54 UTC
North/South Sensor Heliograph
Magnitude 4.3
Depth 8.1 km
29 km SE of Bodie, CA
May 31, 2020 01:07:15 UTC
North/South Sensor Heliograph
Magnitude 3.5
16 km NW of Pinnacles, CA
May 28, 2020 19:19:13 UTC
East/West Sensor Heliograph
Magnitude 5.3
53 km WNW of Tonopah, Nevada
May 22, 2020 00:22:00 UTC
East/West Sensor Heliograph
Magnitude 5.0
46 km WNW of Tonopah, Nevada
May 20, 2020 12:36:53 UTC
North/South Sensor Heliograph
Magnitude 5.5
252 km W of Ferndale, California
May 18, 2020 07:02:34 UTC
East/West Sensor Heliograph
Magnitude 4.5
57 km WNW of Tonopah, Nevada
May 17, 2020 11:53:52 UTC
North/South Sensor Heliograph
Magnitude 4.5
45 km WNW of Tonopah, Nevada
May 16, 2020 11:50:54 UTC
North/South Sensor Heliograph
Magnitude 6.5
Depth 2.7 km
56 km W of Tonopah, Nevada
May 15, 2020 11:03:27 UTC
Magnitude 4.9
Depth 3.8 km
64 km W of Tonopah, Nevada
May 15, 2020 11:18:12 UTC
Magnitude 5.1
Depth 6.8 km
55 km WNW of Tonopah, Nevada
May 15, 2020 11:26:01 UTC
Magnitude 4.8
Depth 5.8 km
59 km WNW of Tonopah, Nevada
May 15, 2020 11:52:07 UTC
North/South Sensor Heliograph
Magnitude 5.2
Depth 8.5 km
30 km SE of Bodie, California
April 11, 2020 14:36:37 UTC
Magnitude 4.6
Depth 8.9 km
29 km SE of Bodie, California
April 11, 2020 16:22:50 UTC
North/South Sensor Heliograph
Magnitude 4.1
Depth 7.8 km
16 km WSW of Toms Place, California
April 5, 2020 19:20:46 UTC
North/South Sensor Heliograph
Magnitude 4.9
Depth 10.5 km
17 km ESE of Anza, California
April 4, 2020 01:53:18 UTC
North/South Sensor Heliograph
Magnitude 6.5
Depth 6.1 km
72 km W of Challis, Idaho
March 31, 2020 23:52:30 UTC
East/West Sensor Heliograph
Note: This earthquake spans two graphs.
Magnitude 4.5
Depth 8.4 km
6 km N of Johnson Lane, Nevada
March 21, 2020 01:33:35 UTC
North/South Sensor Heliograph
Magnitude 2.9
Depth 2.5 km
5 km NE of Alum Rock, California
March 19, 2020 10:17:04 UTC
East/West Sensor Heliograph
Magnitude 5.7
Depth 11.9 km
6 km NNE of Magna, Utah
March 18, 2020 13:09:31 UTC
Magnitude 5.2
Depth 28.6 km
15 km W of Petrolia, California
March 18, 2020 22:08:20 UTC
North/South Sensor Heliograph
Magnitude 5.8
Depth 3.2 km
86 km W of Petrolia, California
March 9, 2020 02:59:06 UTC
Magnitude 4.9
Depth 7.2 km
73 km W of Petrolia, California
March 9, 2020 06:32:59 UTC
East/West Sensor Heliograph
Magnitude 3.9
Depth 5.3 km
10km ENE of Morgan Hill, CA
January 2, 2020 07:16:31 UTC
North/South Sensor Heliograph
Voltage Counts & Frequency for All Sensors
