Get our newsletter!
Check out our volcano tours on VolcanoAdventures.com!
Volcanoes & Earthquakes - new app for Android
Guaranteed tours
8-16 May 2021: From Stromboli to Etna - Sicila and Eolian Islands (Italy)
: spaces available / : guaranteed / : few spaces left / : booked out
Interactive map of latest earthquakes and active volcanoes in the world

Major mag. 7.6 earthquake - Guerrero, Mexico on Saturday, 21 September 1985

Major mag. 7.6 earthquake  - Guerrero, Mexico on Saturday, 21 September 1985
Date & time: Saturday, 21 September 1985 01:37 UTC
Magnitude: 7.6
Depth: 30.8 km
Epicenter latitude / longitude: 17.802°N / 101.647°W (Mexico)
Nearest volcano: Paricutín (Michoacán-Guanajuato) (198 km / 123 mi)
Nearby towns and cities:
2 km (1 mi) W of El Sandial (pop: 100)
6 km (4 mi) SE of Juntas del Poblado (pop: 100)
7 km (4 mi) N of Pantla (pop: 3,900)
162 km (100 mi) SE of Apatzingán (pop: 98,400)
184 km (114 mi) SE of Uruapan (pop: 237,300)
321 km (200 mi) SW of Mexico City (pop: 12,294,200)
Primary data source: USGS
Estimated released energy: 1.6 x 1016 joules (4402 gigawatt hours, equivalent to 3.8 x 106 tons of TNT or 236.7 atomic bombs!) [learn more]
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.
TimeMag. / DepthLocationSource
Sat, 21 Sep 01:37 UTCM 7.6 / 30.8 kmGuerrero, MexicoUSGS
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!

Aftershocks of the 7.6 quake: Guerrero, Mexico, 21 Sep 1985 01:37

More info
Recorded aftershocks, latest first (9 quakes):
  • 26 Jul 1987 00:22 UTC
    | M 5.1 |
    73.1 km (45.4 mi) depth
    |
    127 km (79 mi) distance
    | USGS | Details
  • 19 Jun 1986 04:39 UTC
    | M 5.2 |
    69.9 km (43.4 mi) depth
    |
    65 km (40 mi) distance
    | USGS | Details
  • 11 Jun 1986 21:39 UTC
    | M 5.1 |
    52.4 km (32.6 mi) depth
    |
    118 km (73 mi) distance
    | USGS | Details
  • 05 May 1986 05:46 UTC
    | M 5.9 |
    37.8 km (23.5 mi) depth
    |
    114 km (71 mi) distance
    | USGS | Details
  • 30 Apr 1986 07:07 UTC
    | M 7.0 |
    26.5 km (16.5 mi) depth
    |
    155 km (97 mi) distance
    | USGS | Major mag. 7.0 earthquake - Michoacan, Mexico on Wednesday, 30 April 1986
  • 12 Jan 1986 16:51 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    39 km (24 mi) distance
    | USGS | Details
  • 29 Oct 1985 15:02 UTC
    | M 5.9 |
    38.8 km (24.1 mi) depth
    |
    103 km (64 mi) distance
    | USGS | Details
  • 28 Sep 1985 03:52 UTC
    | M 5.4 |
    33 km (20.5 mi) depth
    |
    77 km (48 mi) distance
    | USGS | Details
  • 25 Sep 1985 07:43 UTC
    | M 5.7 |
    29.9 km (18.6 mi) depth
    |
    124 km (77 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Major mag. 7.6 earthquake - Guerrero, Mexico on Saturday, 21 September 1985
 

More on VolcanoDiscovery

 
Why is there advertising on this site?

Support us!

Maintaining the website and our free apps is a time- and cost-intensive effort.
If you find the information useful and would like to support our team to develop further features and get the upgraded ad-free version, consider making a donation (PayPal or Online cc payment).
Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
Thanks to your past donations, these features have been added recently:
  • Earthquake archive back to 1900
  • Additional data sources
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.