Right now
The most recent data we hold from USGS arrived 80 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
22 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
Reported by USGS today.
It is the strongest of the 102 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 11 more were recorded here in the fortnight before it.
What the source measured
USGS reported: 5 km SW of Guánica, Puerto Rico
USGS recorded magnitude 4.8 at a depth of 7 km.
Urban PEI: 13,506 within a heuristic 30 km radius; not unique people.
Nearby, since 12 March 2026
- August 7, 2026 · score 0 · 2.1 km
- May 15, 2026 · score 0 · 3.1 km
- July 13, 2026 · score 0 · 3.4 km
How we know
3 recorded sources include USGS; independence is not established by this count.
Our own score for this event is 19 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Earthquakes |
| Severity | Low |
| Calamity Score (ours) | 19 / 100 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 17.9391, -66.9455 |
| Nearest City | Yauco (14 km) |
| Urban exposure index (PEI) | 13.5K within 30 km |
| Impact Tier | minor |
| Timestamp | 2026-09-18T13:19:35.140Z |
| Source | https://earthquake.usgs.gov/earthquakes/eventpage/pr2026261000 |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: usgs. Occurrence: 2026-09-18T13:19:35.140Z.
First archived: 2026-09-18T14:04:45.788Z. Material modification: 2026-09-19T00:58:23.775Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-19T00:58:23.775Z · data_change
Index 26 → 19; severity low → low; version 5 → 5.
2026-09-19T00:42:20.414Z · data_change
Index 26 → 26; severity low → low; version 5 → 5.
2026-09-19T00:26:16.767Z · data_change
Index 19 → 26; severity low → low; version 5 → 5.
2026-09-18T23:42:58.971Z · data_change
Index 26 → 19; severity low → low; version 5 → 5.
2026-09-18T22:25:59.700Z · data_change
Index 26 → 26; severity low → low; version 5 → 5.
2026-09-18T22:20:35.558Z · data_change
Index 19 → 26; severity low → low; version 5 → 5.
2026-09-18T22:15:11.584Z · data_change
Index 19 → 19; severity low → low; version 5 → 5.
2026-09-18T20:20:21.088Z · data_change
Index 19 → 19; severity low → low; version 5 → 5.
2026-09-18T20:03:58.081Z · data_change
Index 19 → 19; severity low → low; version 5 → 5.
2026-09-18T19:58:29.838Z · data_change
Index 19 → 19; severity low → low; version 5 → 5.
Score Breakdown
Technical Details
| Mag | 4.8 |
| Depth | 7 |
| Tsunami | false |
| Felt | 84 |
| Mmi | 4.44 |
| Alert | green |
| Sig | 404 |
| Emsc Mag | 4.6 |
| Emsc Depth | 5.1 |
| Emsc MagType | mb |
| Emsc Region | PUERTO RICO REGION |
| Emsc Auth | EMSC |
| Emsc SourceId | 2062031 |
| Gfz Mag | 4.71 |
| Gfz Depth | 10 |
| Gfz MagType | mb |
| Gfz Region | Puerto Rico Region |
| Usgs Shakemap Mag | 4.8 |
| Usgs Shakemap Depth | 7 |
| Usgs Shakemap Mmi | 4.44 |
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.
Review the area, threshold and delivery channel in your account.
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