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: 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 | |||||
75135647 | 2025/02/18 | 11:04:8.400 | 38.82891 | -122.82130 | 1.889 | 0.40 | 1 | 0.45 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135597 | 2025/02/18 | 09:04:50.010 | 37.33975 | -122.23387 | 8.847 | 2.50 | 1 | 0.26 | 2F.1 | tech | 3D | gE | usgs | |
75135547 | 2025/02/18 | 07:55:1.870 | 38.83736 | -122.81712 | 2.418 | 0.40 | 1 | 0.31 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135537 | 2025/02/18 | 07:49:45.310 | 40.43100 | -125.15670 | 10.000 | 3.10 | - | - | 2F.0 | tech | 3D | gE | usgs | MTJ |
75135492 | 2025/02/18 | 05:55:50.970 | 38.80109 | -122.77838 | 3.039 | 0.50 | 2 | 1.45 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135432 | 2025/02/18 | 02:05:58.500 | 38.81860 | -122.82359 | 3.040 | 0.20 | 1 | 0.70 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135387 | 2025/02/17 | 23:31:48.030 | 38.80045 | -122.77766 | 4.674 | 0.30 | 1 | 0.90 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135367 | 2025/02/17 | 22:59:3.160 | 38.84058 | -122.82403 | 2.477 | 0.40 | 2 | 0.20 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135272 | 2025/02/17 | 19:20:32.470 | 38.81894 | -122.82273 | 3.123 | 0.30 | 1 | 0.75 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135182 | 2025/02/17 | 15:11:46.400 | 38.81757 | -122.82419 | 3.316 | -0.10 | 1 | 0.84 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135142 | 2025/02/17 | 11:46:15.000 | 38.82836 | -122.85952 | 3.174 | 0.30 | 1 | 0.58 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135097 | 2025/02/17 | 09:25:50.860 | 38.79391 | -122.75129 | 2.164 | 0.40 | 1 | 0.69 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135007 | 2025/02/17 | 03:51:15.480 | 38.81926 | -122.82312 | 3.053 | 0.20 | 2 | 0.30 | 2F.1 | tech | 3D | gE | usgs | GGF |
75134862 | 2025/02/16 | 22:04:43.710 | 38.53435 | -122.44720 | 10.443 | 1.70 | 1 | 0.92 | 2F.1 | tech | 3D | gE | usgs | |
75134827 | 2025/02/16 | 21:06:6.110 | 38.81918 | -122.76394 | 2.477 | 0.40 | 1 | 0.89 | 2F.1 | tech | 3D | gE | usgs | GGF |
75134807 | 2025/02/16 | 20:51:3.290 | 35.82805 | -120.37735 | 6.755 | 0.70 | 2 | 1.33 | 2F.1 | tech | 3D | gE | usgs | PKF |
75134797 | 2025/02/16 | 20:33:42.780 | 38.81811 | -122.82266 | 3.345 | -0.20 | 1 | 0.84 | 2F.1 | tech | 3D | gE | usgs | GGF |
75134757 | 2025/02/16 | 19:31:32.260 | 38.55681 | -122.67485 | 4.867 | 1.10 | 1 | 0.21 | 2F.1 | tech | 3D | gE | usgs | |
75134747 | 2025/02/16 | 19:17:26.780 | 36.07444 | -120.20371 | 8.196 | 1.10 | 1 | 0.95 | 3F.1 | tech | 3D | gE | usgs | |
75134717 | 2025/02/16 | 17:58:49.520 | 36.08026 | -120.18473 | 10.286 | 1.00 | 1 | 1.40 | 3F.1 | tech | 3D | gE | usgs |
75132742 | 2025/02/13 | 09:09:16.020 | 37.63315 | -122.48294 | 7.959 | 1.60 | 2 | 0.25 | 2F.1 | tech | 3D | gE | usgs | |
75135647 | 2025/02/18 | 11:04:8.400 | 38.82891 | -122.82130 | 1.889 | 0.40 | 1 | 0.45 | 2F.1 | tech | 3D | gE | usgs | GGF |
75134172 | 2025/02/15 | 20:15:22.400 | 36.03220 | -120.60320 | -0.610 | 0.90 | - | - | 3F.0 | tech | 3D | gE | usgs | |
75135597 | 2025/02/18 | 09:04:50.010 | 37.33975 | -122.23387 | 8.847 | 2.50 | 1 | 0.26 | 2F.1 | tech | 3D | gE | usgs | |
75133612 | 2025/02/14 | 23:32:49.520 | 38.82220 | -122.84587 | 3.306 | 0.80 | 1 | 1.11 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135547 | 2025/02/18 | 07:55:1.870 | 38.83736 | -122.81712 | 2.418 | 0.40 | 1 | 0.31 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135492 | 2025/02/18 | 05:55:50.970 | 38.80109 | -122.77838 | 3.039 | 0.50 | 2 | 1.45 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135432 | 2025/02/18 | 02:05:58.500 | 38.81860 | -122.82359 | 3.040 | 0.20 | 1 | 0.70 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135387 | 2025/02/17 | 23:31:48.030 | 38.80045 | -122.77766 | 4.674 | 0.30 | 1 | 0.90 | 2F.1 | tech | 3D | gE | usgs | GGF |
75135367 | 2025/02/17 | 22:59:3.160 | 38.84058 | -122.82403 | 2.477 | 0.40 | 2 | 0.20 | 2F.1 | tech | 3D | gE | usgs | GGF |
|