Strong mag. 6.5 earthquake - Pagan Region, Northern Mariana Islands, on Tuesday, 28 October 1930 at 21:10 (GMT)

Strong mag. 6.5 earthquake  - Pagan Region, Northern Mariana Islands, on Tuesday, 28 October 1930 at 21:10 (GMT)

Strong magnitude 6.5 earthquake at 25 km depth

Date & time: 28 Oct 1930 09:10:22 UTC###AGESTRINGCOPY###
Magnitude: 6.5
Depth: 25.0 km
Epicenter latitude / longitude: 18.467°N / 146.571°E (Northern Mariana Islands)
Nearest volcano: Pagan (90 km / 56 mi)
Nearby towns and cities:
94 km (58 mi) ENE of Pagan Village (Pagan Island) (pop: 50)
372 km (231 mi) NNE of Saipan (pop: 48,200)
402 km (250 mi) NNE of San Jose (pop: 15,000)
581 km (361 mi) NNE of Dededo Village (Guam) (pop: 44,900)
591 km (367 mi) NNE of Chalan Pago-Ordot Village (Guam) (pop: 6,820)
600 km (373 mi) NNE of Santa Rita Village (Guam) (pop: 7,500)
610 km (379 mi) NNE of Inarajan Village (Guam) (pop: 3,050)
Primary data source: USGS
Estimated released energy: 3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 atomic bombs!) More info
[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.
M 6.525 kmPagan region, Northern Mariana IslandsUSGS
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

Aftershocks of the 6.5 quake Pagan Region, Northern Mariana Islands, 28 October 21:10 UTC

More info
Recorded aftershocks, latest first (0 quakes):
So far, no aftershocks have been registered.

Earlier earthquakes in the same area since 1900

Strong mag. 6.5 earthquake - Pagan Region, Northern Mariana Islands, on Tuesday, 28 October 1930 at 21:10 (GMT)

Map of earlier quakes

Volcanoes & Earthquakes - new app for Android

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.