Earthquakes in Ascension Island Region
Reported by ISC 171 days ago.
It is the 2nd strongest of the 5 detections recorded within 20 km of this point since 17 March 2026. One more was recorded here in the fortnight before it.
What the source measured
ISC reported: Ascension Island region
ISC recorded magnitude 5.0 at a depth of 10 km.
The seismic region given by the source is Ascension Island region.
Nearby, since 17 March 2026
- March 17, 2026 · score 16 · 0.0 km
- March 17, 2026 · score 9 · 0.0 km
- March 17, 2026 · score 16 · 0.0 km
How we know
Confirmed by 2 independent sources, including ISC.
Our own score for this event is 16 out of 100, at 63 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Earthquakes |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 63% |
| Coordinates | -10.4520, -13.1420 |
| Nearest City | Harper (1755 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-17T18:53:57.000Z |
| Source | http://www.isc.ac.uk/cgi-bin/web-db-run?event_id=645516107&out_format=IMS1.0&request=COMPREHENSIVE |
Score Breakdown
Technical Details
| Mag | 5 |
| Depth | 10 |
| MagType | M |
| Region | Ascension Island region |
| Iris Mag | 5 |
| Iris Depth | 10 |
| Iris MagType | mb |
| Iris Region | ASCENSION ISLAND REGION |
| MergedSources | [{"id":"iris_12083549","source":"iris","severity":"medium","severityValue":40,"timestamp":1773773637000,"latitude":-10.4517,"longitude":-13.1421}] |
Cascade Risks
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.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens in this area?
Calamity.live data shows a earthquake event with CalamityScore 16/100, in Ascension Island Region, based on data from isc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.