IMPORTANT NOTE: A new comprehensive update of the Northern CA real-time double-difference catalog is available at https://nocaldd.ldeo.columbia.edu. The update includes a new base catalog (1984-2021) with hypocenter depths relative to the Geoid, consistent with USGS routine monitoring, and other improvements to the DD-RT system. We will retire this website soon.
|
Faults of special interest:
Hayward Fault |
Calaveras Fault |
Parkfield
Earthquakes of special interest:
2023-08-10 M4.3 Parkfield
2022-10-25 M5.0 Calaveras
2021-07-08 M6.0 SmithValley
2020-08-19 M4.0 Willits
2015-08-17 M4.0 Fremont
2014-08-24 M6.0 South Napa
2012-10-21 M5.3 King City
2012-08-06 M4.4 Parkfield
2011-10-20 M4.0 Berkeley
Archived DDRT solutions:
2012:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2013:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2014:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2015:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2016:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2017:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2018:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2019:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2020:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2021:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2022:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2023:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2024:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
2025:
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec
Downloads:
Download the real-time double-difference catalog, Jan 2012 - present, here .
Download the double-difference base catalog, 1984-2011, here.
Search either catalog here.
Most recent events:
Events in queue: 4
Q: Quality of DDRT solution; DX: Shift between DD and network location (km); V: version (CISN.DD)
If Q='-': No DDRT solution computed.
tech: link to technical information; 3D: link to 3D viewer; gE: link to google Earth viewer
Faults/regions of special interest:
HAY = Hayward Fault; CAL = Calaveras Fault; PKF = Parkfield; LVC = Long Valley;
GGF = Geysers Geothermal Field; MTJ = Mendocino TJ
EVENT ID | DATE | TIME (UTC) | LAT | LON | DEPTH | ML | Q | DX | V | |||||
75182537 | 2025/05/15 | 20:02:58.970 | 37.52941 | -118.62505 | 11.476 | 1.00 | 1 | 0.39 | 3F.1 | tech | 3D | gE | usgs | LVC |
75182467 | 2025/05/15 | 15:28:17.560 | 38.91045 | -122.99841 | 2.442 | 1.00 | 1 | 0.99 | 2F.1 | tech | 3D | gE | usgs | |
75182437 | 2025/05/15 | 14:37:2.780 | 38.81778 | -122.82305 | 3.509 | 0.40 | 2 | 0.78 | 2F.1 | tech | 3D | gE | usgs | GGF |
75182422 | 2025/05/15 | 13:51:2.370 | 39.16486 | -123.16786 | 6.833 | 1.40 | 2 | 0.22 | 3F.1 | tech | 3D | gE | usgs | |
75182417 | 2025/05/15 | 13:50:32.010 | 39.54594 | -123.37247 | 9.775 | 1.90 | 1 | 1.55 | 2F.1 | tech | 3D | gE | usgs | |
75182407 | 2025/05/15 | 12:27:54.730 | 38.81692 | -122.81923 | 3.324 | 0.20 | 1 | 0.73 | 2F.1 | tech | 3D | gE | usgs | GGF |
75182322 | 2025/05/15 | 08:49:11.760 | 38.83827 | -122.78388 | 2.780 | 0.40 | 1 | 0.78 | 2F.1 | tech | 3D | gE | usgs | GGF |
75182277 | 2025/05/15 | 06:46:18.180 | 38.83997 | -122.79736 | 3.057 | 0.30 | 1 | 0.81 | 2F.1 | tech | 3D | gE | usgs | GGF |
75182257 | 2025/05/15 | 04:59:53.080 | 38.83325 | -122.79478 | 3.075 | 0.30 | 2 | 0.93 | 2F.1 | tech | 3D | gE | usgs | GGF |
75182247 | 2025/05/15 | 04:37:34.980 | 38.52023 | -119.49975 | 6.010 | 2.40 | 2 | 0.42 | 3F.1 | tech | 3D | gE | usgs | |
75182212 | 2025/05/15 | 03:10:57.200 | 39.39694 | -120.24294 | 11.152 | 2.40 | 1 | 1.41 | 2F.1 | tech | 3D | gE | usgs | |
75182202 | 2025/05/15 | 02:24:7.510 | 38.83607 | -122.81562 | 2.647 | 0.00 | 1 | 0.77 | 2F.1 | tech | 3D | gE | usgs | GGF |
75182192 | 2025/05/15 | 02:16:45.080 | 38.80108 | -122.77677 | 4.903 | 0.30 | 1 | 1.17 | 2F.1 | tech | 3D | gE | usgs | GGF |
75182157 | 2025/05/15 | 01:24:16.980 | 40.03670 | -123.77570 | 18.860 | 1.60 | - | - | 2F.0 | tech | 3D | gE | usgs | |
75182127 | 2025/05/14 | 23:08:22.560 | 38.80476 | -122.78034 | 3.914 | 0.00 | 2 | 1.04 | 2F.1 | tech | 3D | gE | usgs | GGF |
75182112 | 2025/05/14 | 22:23:48.000 | 37.66451 | -121.67656 | 2.383 | 1.20 | 1 | 1.55 | 3F.1 | tech | 3D | gE | usgs | |
75182087 | 2025/05/14 | 21:30:4.160 | 38.80583 | -122.79704 | 4.104 | 0.50 | 1 | 0.83 | 2F.1 | tech | 3D | gE | usgs | GGF |
75182047 | 2025/05/14 | 19:15:24.670 | 37.63170 | -119.02880 | -2.840 | 0.40 | - | - | 3F.0 | tech | 3D | gE | usgs | LVC |
75182042 | 2025/05/14 | 19:13:2.320 | 38.84013 | -122.78267 | 2.601 | 0.20 | 1 | 0.93 | 2F.1 | tech | 3D | gE | usgs | GGF |
75182027 | 2025/05/14 | 18:06:2.810 | 38.78383 | -122.73214 | 2.465 | 0.50 | 1 | 0.63 | 2F.1 | tech | 3D | gE | usgs | GGF |
75179101 | 2025/05/09 | 22:38:33.380 | 36.05880 | -120.63183 | 0.926 | 1.00 | 2 | 0.71 | 4F.1 | tech | 3D | gE | usgs | PKF |
75179101 | 2025/05/09 | 22:38:33.520 | 36.05900 | -120.62870 | 0.050 | 0.90 | - | - | 2F.0 | tech | 3D | gE | usgs | |
75179081 | 2025/05/09 | 21:21:58.080 | 36.59132 | -121.04487 | 8.832 | 1.00 | 2 | 2.92 | 3F.1 | tech | 3D | gE | usgs | |
75182537 | 2025/05/15 | 20:02:58.970 | 37.52941 | -118.62505 | 11.476 | 1.00 | 1 | 0.39 | 3F.1 | tech | 3D | gE | usgs | LVC |
75176201 | 2025/05/04 | 04:46:33.340 | 38.82179 | -122.80505 | 2.551 | 1.30 | 1 | 0.87 | 2F.1 | tech | 3D | gE | usgs | GGF |
75176176 | 2025/05/04 | 03:15:43.770 | 38.83517 | -122.79283 | 2.527 | 1.00 | 1 | 0.93 | 2F.1 | tech | 3D | gE | usgs | GGF |
75176151 | 2025/05/04 | 01:24:26.620 | 38.83447 | -122.79958 | 2.968 | 1.50 | 1 | 0.79 | 2F.1 | tech | 3D | gE | usgs | GGF |
75179531 | 2025/05/10 | 20:52:58.870 | 40.34200 | -124.82620 | 12.940 | 2.10 | - | - | 2F.0 | tech | 3D | gE | usgs | MTJ |
75178996 | 2025/05/09 | 17:49:9.920 | 40.30950 | -124.95380 | 10.000 | 2.50 | - | - | 2F.0 | tech | 3D | gE | usgs | MTJ |
75178801 | 2025/05/09 | 06:09:23.050 | 40.34020 | -124.65820 | 23.040 | 2.50 | - | - | 2F.0 | tech | 3D | gE | usgs | MTJ |
|