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.
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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
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: 0
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 | |||||
75039912 | 2024/07/27 | 02:18:43.330 | 41.09530 | -124.30780 | 22.820 | 2.50 | - | - | 0A.0 | tech | 3D | gE | usgs | |
75039907 | 2024/07/27 | 01:31:37.360 | 38.82650 | -122.80457 | 3.551 | 1.10 | 2 | 1.19 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039902 | 2024/07/27 | 01:25:44.550 | 38.79000 | -122.53670 | 4.690 | 1.00 | - | - | 0A.0 | tech | 3D | gE | usgs | |
75039897 | 2024/07/27 | 01:11:18.900 | 38.83870 | -122.78732 | 2.798 | 0.80 | 2 | 0.81 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039887 | 2024/07/26 | 23:25:55.720 | 38.82006 | -122.81665 | 4.009 | 0.80 | 2 | 2.02 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039877 | 2024/07/26 | 23:08:20.440 | 38.83832 | -122.80247 | 2.825 | 0.50 | 2 | 0.73 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039872 | 2024/07/26 | 21:58:38.570 | 38.84087 | -122.83807 | 2.219 | 0.70 | 2 | 0.81 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039862 | 2024/07/26 | 21:10:28.710 | 38.80070 | -122.81612 | 3.659 | 0.30 | 2 | 0.23 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039857 | 2024/07/26 | 21:05:15.610 | 38.82541 | -122.81042 | 2.120 | 0.70 | 1 | 0.71 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039847 | 2024/07/26 | 20:37:22.660 | 36.92044 | -118.22869 | 12.021 | 2.70 | 2 | 0.08 | 0A.1 | tech | 3D | gE | usgs | |
75039842 | 2024/07/26 | 20:27:35.860 | 38.84569 | -122.81699 | 2.249 | 1.20 | 2 | 0.92 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039812 | 2024/07/26 | 18:31:33.370 | 38.33250 | -122.00230 | 4.240 | 0.00 | - | - | 0A.0 | tech | 3D | gE | usgs | |
75039807 | 2024/07/26 | 17:15:12.240 | 38.81535 | -122.75833 | 2.338 | 0.60 | 1 | 0.53 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039802 | 2024/07/26 | 17:12:18.470 | 38.80247 | -122.82536 | 8.194 | 0.70 | 2 | 5.72 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039792 | 2024/07/26 | 15:53:28.630 | 40.29850 | -124.44450 | 9.650 | 2.00 | - | - | 0A.0 | tech | 3D | gE | usgs | MTJ |
75039787 | 2024/07/26 | 15:48:9.090 | 38.80973 | -122.82012 | 4.003 | 0.60 | 1 | 1.15 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039777 | 2024/07/26 | 15:21:26.080 | 38.80351 | -122.94303 | 0.001 | 0.80 | 2 | 0.09 | 0A.1 | tech | 3D | gE | usgs | |
75039767 | 2024/07/26 | 14:04:50.860 | 38.84631 | -122.75677 | 14.965 | 0.80 | 2 | 1.78 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039762 | 2024/07/26 | 13:44:11.460 | 38.82415 | -122.80697 | 3.226 | 0.80 | 2 | 0.66 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039757 | 2024/07/26 | 13:33:52.210 | 36.83934 | -121.39996 | 8.749 | 2.50 | 1 | 1.03 | 0A.1 | tech | 3D | gE | usgs |
75039912 | 2024/07/27 | 02:18:43.330 | 41.09530 | -124.30780 | 22.820 | 2.50 | - | - | 0A.0 | tech | 3D | gE | usgs | |
75039907 | 2024/07/27 | 01:31:37.360 | 38.82650 | -122.80457 | 3.551 | 1.10 | 2 | 1.19 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039902 | 2024/07/27 | 01:25:44.550 | 38.79000 | -122.53670 | 4.690 | 1.00 | - | - | 0A.0 | tech | 3D | gE | usgs | |
75039897 | 2024/07/27 | 01:11:18.900 | 38.83870 | -122.78732 | 2.798 | 0.80 | 2 | 0.81 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039232 | 2024/07/25 | 09:18:43.840 | 37.57435 | -121.77964 | 7.149 | 1.50 | 1 | 1.03 | 2F.1 | tech | 3D | gE | usgs | |
75039677 | 2024/07/26 | 07:28:3.820 | 35.97850 | -119.87400 | 9.240 | 1.80 | - | - | 2F.0 | tech | 3D | gE | usgs | |
75039202 | 2024/07/25 | 06:57:13.920 | 37.57270 | -121.78026 | 6.892 | 1.10 | 2 | 0.95 | 2F.1 | tech | 3D | gE | usgs | |
75039887 | 2024/07/26 | 23:25:55.720 | 38.82006 | -122.81665 | 4.009 | 0.80 | 2 | 2.02 | 0A.1 | tech | 3D | gE | usgs | GGF |
75039877 | 2024/07/26 | 23:08:20.440 | 38.83832 | -122.80247 | 2.825 | 0.50 | 2 | 0.73 | 0A.1 | tech | 3D | gE | usgs | GGF |
75038727 | 2024/07/24 | 01:51:0.080 | 38.79446 | -122.72630 | 2.642 | 0.90 | 1 | 0.72 | 2F.1 | tech | 3D | gE | usgs | GGF |
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