Strong mag. 5.4 earthquake - 13 mi south of San Jose, Santa Clara County, California, USA, on Tuesday, 8 August 1989 at 08:13 (GMT)

Strong mag. 5.4 earthquake - 13 mi south of San Jose, Santa Clara County, California, USA, on Tuesday, 8 August 1989 at 08:13 (GMT)

Strong magnitude 5.4 earthquake at 13 km depth

Date & time: 8 Aug 1989 08:13:27 UTC
Magnitude: 5.4
Depth: 13.4 km
Epicenter latitude / longitude: 37.14817°N / 121.92683°W (Santa Clara County, California, United States)
Nearest volcano: Clear Lake (216 km / 134 mi)
Nearby towns and cities:
4 km (3 mi) ESE of Lexington Hills (pop: 2,420) --> See nearby quakes!
10 km (6 mi) SSE of Los Gatos (Santa Clara County) (pop: 30,700) --> See nearby quakes!
16 km (10 mi) S of Campbell (pop: 41,100) --> See nearby quakes!
21 km (13 mi) NNE of Santa Cruz (pop: 64,200) --> See nearby quakes!
21 km (13 mi) S of San Jose (pop: 1,026,900) --> See nearby quakes!
22 km (13 mi) SSE of Cupertino (pop: 60,600) --> See nearby quakes!
23 km (14 mi) S of Santa Clara (pop: 126,200) --> See nearby quakes!
26 km (16 mi) SSE of Sunnyvale (pop: 151,800) --> See nearby quakes!
82 km (51 mi) SSE of San Francisco (pop: 864,800) --> See nearby quakes!
164 km (102 mi) SSW of Sacramento (pop: 490,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.9 x 1012 joules (2.21 gigawatt hours, equivalent to 1898 tons of TNT or 0.1 atomic bombs!) More info
Show interactive Map
[smaller] [bigger]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
MagnitudeDepthLocationSource
M 5.413 kmNorthern California (USA)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
Volcanoes & Earthquakes - new app for Android
to top

Aftershocks

More info
Recorded aftershocks, latest first (132 quakes):
  • 07 Oct 1989 01:59 UTC
    | M 1.2 |
    5.2 km (3.2 mi) depth
    |
    25 km (15 mi) distance
    | USGS | Details
  • 06 Oct 1989 20:32 UTC
    | M 1.2 |
    -0.3 km (-0.2 mi) depth
    |
    26 km (16 mi) distance
    | USGS | Details
  • 06 Oct 1989 15:53 UTC
    | M 2.6 |
    5.8 km (3.6 mi) depth
    |
    25 km (15 mi) distance
    | USGS | Details
  • 05 Oct 1989 22:08 UTC
    | M 1.1 |
    3.5 km (2.2 mi) depth
    |
    29 km (18 mi) distance
    | USGS | Details
  • 05 Oct 1989 07:38 UTC
    | M 1.7 |
    1.8 km (1.1 mi) depth
    |
    27 km (17 mi) distance
    | USGS | Details
  • 04 Oct 1989 16:59 UTC
    | M 1.9 |
    -0.3 km (-0.2 mi) depth
    |
    25 km (15 mi) distance
    | USGS | Details
  • 04 Oct 1989 12:53 UTC
    | M 1.1 |
    1.4 km (0.9 mi) depth
    |
    27 km (17 mi) distance
    | USGS | Details
  • 02 Oct 1989 17:38 UTC
    | M 2.1 |
    -0.3 km (-0.2 mi) depth
    |
    25 km (16 mi) distance
    | USGS | Details
  • 01 Oct 1989 18:21 UTC
    | M 1.9 |
    5.4 km (3.4 mi) depth
    |
    28 km (17 mi) distance
    | USGS | Details
  • 29 Sep 1989 19:57 UTC
    | M 1.7 |
    -0.3 km (-0.2 mi) depth
    |
    25 km (16 mi) distance
    | USGS | Details
  • 29 Sep 1989 17:46 UTC
    | M 2.0 |
    -0.3 km (-0.2 mi) depth
    |
    25 km (16 mi) distance
    | USGS | Details
  • 29 Sep 1989 07:16 UTC
    | M 1.4 |
    3.2 km (2 mi) depth
    |
    28 km (17 mi) distance
    | USGS | Details
  • 27 Sep 1989 19:43 UTC
    | M 1.5 |
    -0.5 km (-0.3 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 27 Sep 1989 18:16 UTC
    | M 1.0 |
    2.9 km (1.8 mi) depth
    |
    29 km (18 mi) distance
    | USGS | Details
  • 26 Sep 1989 21:31 UTC
    | M 1.2 |
    12.6 km (7.8 mi) depth
    |
    1 km (0 mi) distance
    | USGS | Details
  • 26 Sep 1989 17:02 UTC
    | M 1.0 |
    5.4 km (3.4 mi) depth
    |
    28 km (17 mi) distance
    | USGS | Details
    • Show all

to top

Earlier earthquakes in the same area since 1900


Map of earlier quakes

Volcanoes & Earthquakes - new app for Android
Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Additional seismic data sources
  • Improved content in English
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.