Right now
The most recent data we hold from EMSC arrived 2 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, 9 km from here.
Reported by EMSC today.
It is one of only 2 we have recorded within 20 km of this point since 10 September 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
EMSC reported: OFF COAST OF COSTA RICA
EMSC recorded magnitude 4.0 at a depth of 10 km.
The seismic region given by the source is OFF COAST OF COSTA RICA.
How we know
One source: EMSC. Not yet confirmed by a second, independent source.
Our own score for this event is 0 out of 100, at 65 % 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 | Low |
| Calamity Score (ours) | 0 / 100 |
| Our confidence | 65% |
| Coordinates | 8.9471, -84.0655 |
| Nearest City | San Isidro (62 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-10T11:09:47.000Z |
| Source | https://www.seismicportal.eu/eventdetail.html?unid=20260910_0000163 |
Score Breakdown
Technical Details
| Mag | 4 |
| Depth | 10 |
| MagType | m |
| Region | OFF COAST OF COSTA RICA |
| Auth | UNA |
| SourceId | 2058274 |
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.
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