Reported by USGS 149 days ago.
It is the strongest of the 7 detections recorded within 20 km of this point since 20 March 2026. The last comparable one was on 20 March 2026.
What the source measured
USGS reported: 4 km ENE of Hualien City, Taiwan — 33 people reported feeling this earthquake — CDI 5.2 (Moderate)
USGS recorded magnitude 5.5 at a depth of 22 km.
An estimated 87,437 people live within 20 km of this point.
Nearby, since 20 March 2026
- May 13, 2026 · score 6 · 3.9 km
- May 13, 2026 · score 5 · 4.2 km
- March 20, 2026 · score 13 · 16.0 km
How we know
Confirmed by 2 independent sources, including USGS.
Our own score for this event is 34 out of 100, at 85 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Earthquake |
| Severity | medium |
| Calamity Score (ours) | 34 / 100 |
| Our confidence | 85% |
| Coordinates | 23.9901, 121.6455 |
| Nearest City | Hualien City (5 km) |
| Population Exposed | 87.4K within 20 km |
| Impact Tier | significant |
| Timestamp | 2026-04-04T17:14:57.460Z |
| Source | https://earthquake.usgs.gov/earthquakes/eventpage/us6000smlu/dyfi |
Score Breakdown
Technical Details
| Mag | 5.5 |
| Depth | 22.07 |
| Felt | 33 |
| Cdi | 5.2 |
| CdiDescription | Moderate |
| Mmi | 5.68 |
| Alert | green |
| Sig | 483 |
| Tsunami | false |
| Place | 4 km ENE of Hualien City, Taiwan |
| Types | ,dyfi,ground-failure,losspager,origin,phase-data,shakemap, |
| Usgs Shakemap Mag | 5.5 |
| Usgs Shakemap Depth | 22.07 |
| Usgs Shakemap Mmi | 5.68 |
| Usgs Shakemap MmiDescription | Moderate |
| Usgs Shakemap Felt | 33 |
| Usgs Shakemap Alert | green |
| Usgs Shakemap Sig | 483 |
| Usgs Shakemap Tsunami | false |
| Usgs Shakemap Place | 4 km ENE of Hualien City, Taiwan |
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 10 February 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.
Calamity.live data shows a earthquake event with CalamityScore 34/100, near Hualien City (Taiwan), based on data from usgs_dyfi. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.