Earthquakes in Central Mid-atlantic Ridge
Reported by EMSC today.
It is one of only 2 we have recorded within 20 km of this point since 4 September 2026. Another comparable one was recorded here earlier the same day.
What the source measured
EMSC reported: CENTRAL MID-ATLANTIC RIDGE
EMSC recorded magnitude 5.1 at a depth of -10 km.
The seismic region given by the source is CENTRAL MID-ATLANTIC RIDGE.
Nearby, since 4 September 2026
- September 4, 2026 · score 17 · 7.5 km
How we know
Confirmed by 2 independent sources, including EMSC.
Our own score for this event is 17 out of 100, at 69 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Earthquakes |
| Severity | Medium |
| Calamity Score (ours) | 17 / 100 |
| Our confidence | 69% |
| Coordinates | 9.4099, -40.8837 |
| Nearest City | Apicum-Açu (1302 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-04T23:38:41.240Z |
| Source | https://www.seismicportal.eu/eventdetail.html?unid=20260904_0000340 |
Score Breakdown
Technical Details
| Mag | 5.1 |
| Depth | -10 |
| MagType | mb |
| Region | CENTRAL MID-ATLANTIC RIDGE |
| Auth | EMSC |
| SourceId | 2055951 |
| Gfz Mag | 5.14 |
| Gfz Depth | 10 |
| Gfz MagType | mb |
| Gfz Region | Central Mid-Atlantic Ridge |
| MergedSources | [{"id":"gfz_gfz2026rjgo","source":"gfz","severity":"medium","severityValue":41.12,"timestamp":1788565121160,"latitude":9.418,"longitude":-40.873}] |
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 17/100, in Central Mid-atlantic Ridge, based on data from emsc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.