Earthquake details

Friday, October 11, 1918 Earthquake

The earthquake hit Puerto Rico on Friday, October 11, 1918 at 17:03 UTC with a magnitude of 6.1. The closest known location in the current dataset is Mayagüez (Puerto Rico - PR), about 40.2 km away. The epicenter is located at longitude -67.232 and latitude 18.551.

Magnitude	6.1
Alert	Severe
Depth	15.0 km
Coordinates	18.551, -67.232
UTC time	1918-10-11 17:03:43.580

Location	Mayagüez
Country	Puerto Rico (PR)
Severity	Severe

Earthquake map 1918-10-11

Closest countries

The 12 closest cities near the epicenter.

Mayagüez	40.2 km
Arecibo	55.2 km
Ponce	88.1 km
Vega Baja	89.9 km
Levittown	111.5 km
Bayamón	114.9 km
San Juan	119.3 km
Guaynabo	120.3 km
Punta Cana	123.8 km
Caguas	129.9 km
Trujillo Alto	131.1 km
Carolina	135.9 km

Nearby earthquakes

The latest 8 earthquakes within 100 km of this epicenter.

M 4.2 San Juan Puerto Rico · 2026-04-13 02:06 UTC	101.4 km
M 4.3 Arecibo Puerto Rico · 2025-08-22 16:28 UTC	30.4 km

Stay informed

Earthquake alerts

Create targeted notifications for important seismic activity near the places you follow.

Choose the places you want to monitor.

Set a minimum magnitude for notifications.

Set up alerts Create account