M 5.6 Earthquake
North Atlantic Ocean
Geographic Context
This earthquake event occurred near Saint John’s (approximately 351 km away) in Antigua and Barbuda, an area that experiences a range of natural hazards.
Event Assessment
This event is a moderate earthquake measuring 5.6 on the magnitude scale, with a focal depth of 100 km. Events of this magnitude are typically felt over a wide area and may cause damage to vulnerable structures. Calamity.live has classified it as "medium" severity with a severity value of 45.177043376. The computed Calamity Score is 15 out of 100, suggesting contained impact at this time. The primary scoring components are: intensity (33), historical (17). Data for this event was sourced from ipgp, one of the 250 scientific monitoring sources aggregated by Calamity.live.
Regional Monitoring Context
Antigua and Barbuda has a documented history of earthquake events. Seismic monitoring in the region draws on data from multiple agencies including USGS, EMSC, and regional networks. Understanding local seismicity helps emergency management agencies plan for potential future events and assess building code adequacy. Earthquake hazard in any region depends on fault proximity, soil conditions, and building vulnerability — factors that can vary significantly even within a single metropolitan area.
Event Data
| Type | Earthquake |
| Severity | medium |
| Severity Value | 45.177043376 |
| Calamity Score | 15 / 100 |
| Confidence | 58% |
| Coordinates | 18.4571, -58.8337 |
| Nearest City | Saint John’s (351 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-21T11:19:47.354Z |
| Source | http://ws.ipgp.fr/fdsnws/event/1/query?eventid=ovsg2026fpyxud&format=text |
Score Breakdown
Technical Details
| Mag | 5.647130422 |
| Depth | 100.4394531 |
| MagType | MLv |
| Region | North Atlantic Ocean |
Safety Information
If you feel shaking: Drop, Cover, and Hold On. Move away from windows, heavy objects, and exterior walls. After shaking stops, check for injuries and structural damage. Be prepared for aftershocks, which can occur minutes to months after the mainshock. Follow instructions from local emergency management authorities.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a earthquake event with CalamityScore 15/100, near Saint John’s (Antigua and Barbuda), based on data from ipgp. Source: Calamity.live, a platform aggregating real-time data from 207 scientific monitoring sources.