M4.8 earthquake 10 km SE of Mamburao, Mimaropa, Philippines
A magnitude 4.8 earthquake struck 10 km SE of Mamburao, Mimaropa, Philippines at 09:34 local time (01:34 UTC) on 30 Sept 2026, at a depth of 10 km, according to USGS and GFZ.
Reported by 2 agencies · 4 reports to USGS “Did You Feel It?”
Data: USGS, GFZ · updated 2026-10-14 00:07 UTC · reviewed
- Magnitude
- 4.8light
body-wave magnitude (mb) - Depth
- 10 km
- Status
- Reviewed
- Origin time
- 2026-09-30 01:34:05 UTC
- Local: 30 Sept 2026, 09:34:05 (Asia/Manila)
- Epicentre
- 13.162° N, 120.670° E
Circles show this event and others within 32 km from 7 days before to 30 days after. Lines: plate boundaries and GEM active faults. Open on the live map
Nearby places
| Place | Distance | Est. shaking |
|---|---|---|
| MamburaoMimaropa, Philippines · pop. 23,892 | 10 km | VModerate |
| Santa CruzMimaropa, Philippines · pop. 9,826 | 12 km | VModerate |
| SablayanMimaropa, Philippines · pop. 91,406 | 38 km | IVLight |
| CalapanMimaropa, Philippines · pop. 66,008 | 62 km | IIIWeak |
| VictoriaMimaropa, Philippines · pop. 52,215 | 66 km | IIIWeak |
| San PabloCalabarzon, Philippines · pop. 300,166 | 124 km | IIWeak |
| CalambaCalabarzon, Philippines · pop. 575,046 | 128 km | IIWeak |
| CabuyaoCalabarzon, Philippines · pop. 308,745 | 133 km | IIWeak |
Shaking is an estimate from the intensity prediction equation of Allen, Wald & Worden (2012), not an observation. Local ground and buildings can change it by a level or more. Likely felt out to about 102 km.
Every agency's solution
Agencies locate earthquakes with their own stations and methods, so their numbers differ. We match reports of the same event by time, distance and magnitude and show them side by side. The headline uses USGS, which has been reviewed by an analyst.
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How big was it?
Widely felt near the epicentre: rattling windows and objects. Significant damage is unlikely.
It released roughly the energy of 239 t of TNT. Magnitude is logarithmic: each whole step means about 32 times more energy and 10 times larger waves on a seismogram. Depth matters too: at 10 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.
M4.8 releases about 32× the energy of M3.8, and its waves are about 10× taller on a seismogram. Energy: 239 t of TNT vs 7.6 t of TNT.
Each square is the energy of one M3.8. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
1 later earthquake within 32 km; the largest was M4.6 4 days ago. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M4.8
1 later earthquake nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 223.72 | 4.6 | 10 |
Did you feel it?
Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.
Reports close 14 days after an earthquake.
Event id gfz2026tdby. First recorded here 30 Sept 2026, 01:43:50 UTC. Solutions: GFZ (geofon:gfz2026tdby); USGS (usgs:us6000tygs). Cite as: SeismoAtlas, “M4.8 earthquake 10 km SE of Mamburao, Mimaropa, Philippines”, https://seismoatlas.com/earthquake/gfz2026tdby-m4-8-earthquake-10-km-se-of-mamburao-mimaropa-philippines, data from USGS, GFZ.
JSON: /api/v1/events/gfz2026tdby. SeismoAtlas is not an official warning service.