Reported by BMKG today.
It is one of only 4 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
BMKG reported: Pusat gempa berada di darat 43 km barat daya Padang Sidempuan · Felt: III Pandan Tapanuli Tengah, III Gunung Sitoli
BMKG recorded magnitude 4.9 at a depth of 75 km.
The seismic region given by the source is Pusat gempa berada di darat 43 km barat daya Padang Sidempuan.
Nearby, since 4 September 2026
- September 4, 2026 · score 38 · 23.4 km
How we know
Confirmed by 4 independent sources, including BMKG.
Our own score for this event is 8 out of 100, at 72 % 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) | 8 / 100 |
| Our confidence | 72% |
| Coordinates | 1.2000, 98.9300 |
| Nearest City | Padangsidempuan (43 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-04T16:24:40.000Z |
| Source | https://www.bmkg.go.id/tews.html |
Score Breakdown
Technical Details
| Mag | 4.9 |
| Depth | 75 |
| Region | Pusat gempa berada di darat 43 km barat daya Padang Sidempuan |
| TsunamiPotential | true |
| Felt | III Pandan Tapanuli Tengah, III Gunung Sitoli |
| Usgs Mag | 5.1 |
| Usgs Depth | 121.71 |
| Usgs Tsunami | false |
| Usgs Sig | 400 |
| Emsc Mag | 5.1 |
| Emsc Depth | -93 |
| Emsc MagType | mb |
| Emsc Region | NORTHERN SUMATRA, INDONESIA |
| Emsc Auth | EMSC |
| Emsc SourceId | 2055792 |
| Gfz Mag | 4.82 |
| Gfz Depth | 116.2 |
| Gfz MagType | Mw |
| Gfz Region | Northern Sumatra, Indonesia |
| MergedSources | [{"id":"usgs_us7000teck","source":"usgs","severity":"medium","severityValue":40.8,"timestamp":1788539081107,"latitude":1.3758,"longitude":99.0453},{"id":"emsc_20260904_0000236","source":"emsc","severity":"medium","severityValue":40.8,"timestamp":1788539078580,"latitude":1.2228,"longitude":98.9553},{"id":"gfz_gfz2026risf","source":"gfz","severity":"low","severityValue":28.92,"timestamp":1788539080870,"latitude":1.287,"longitude":99.067}] |
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 8/100, in Indonesia (Indonesia), based on data from bmkg. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.