Reviewed by USGSPhilippines22d ago
M4.4 earthquake 7 km WNW of Kalbay, Philippines
Friday, September 4, 2026, 08:11:51 UTC · 5.755°N, 125.439°E
A magnitude 4.4 earthquake struck 7 km WNW of Kalbay, Philippines on Friday, September 4, 2026, 08:11:51 UTC, at a depth of 80.2 km (intermediate).
- Magnitude
- 4.4
- Light · mb
- Depth
- 80 km
- Intermediate
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- —
- No ShakeMap
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquake
In context
How big was it, and why here?
Energy released
60 tons of TNT
That is about 1/251 of the Hiroshima bomb. A magnitude 5.0 releases about 8 times more energy.
Tectonic setting
215 km
from the nearest mapped plate boundary, between the Philippine Sea and Sunda plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: intermediate
80 km
Intermediate-depth earthquakes usually break inside a plate that is sinking into the mantle. Shaking spreads over a wide area but is gentler at the epicenter than a shallow quake of the same size.
Did You Feel It?
Where it was felt
No “Did You Feel It?” reports have been published for this event yet. If you felt it, you can add your report on the USGS website.
I felt it — report to USGS ↗USGS PAGER estimate
Who was exposed to shaking
USGS publishes PAGER impact estimates for significant earthquakes, usually within an hour. No PAGER estimate is available for this event.
After the main event
Aftershocks within 50 km
USGS has not published any M2.5+ earthquake within 50 km since this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 2,051 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.31918 Mindanao, Philippines EarthquakeAugust 15, 1918 · 162 km W of this epicenter
- 8.11924 Mindanao, Philippines EarthquakeApril 14, 1924 · 126 km NE of this epicenter
- 8.01972 Mindanao, Philippines EarthquakeDecember 2, 1972 · 155 km NE of this epicenter
- 7.919 km WNW of Palimbang, PhilippinesAugust 16, 1976 · 166 km W of this epicenter
- 7.947 km ESE of Kalbay, PhilippinesMarch 14, 1913 · 55 km SE of this epicenter
- 7.825 km SW of Kablalan, PhilippinesJune 7, 2026 · 46 km W of this epicenter
- 7.877 km E of Baculin, PhilippinesMay 25, 1943 · 271 km NE of this epicenter
- 7.8161 km SE of Sarangani, PhilippinesApril 1, 1936 · 196 km SE of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 52 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 11,293 recorded deaths. The most severe:
- 1976M8.0
Mindanao: S
16 Aug 1976 · 161 km away · intensity VI
8,000 deaths$134 million damagetsunami
- 1856
Sangihe Pulau (Volcanic)
2 Mar 1856 · 232 km away
2,806 deathsSevere damage ($5–24M)tsunami
- 1913M7.8
Sangihe Island
14 Mar 1913 · 88 km away · intensity IX
138 deathsModerate damage ($1–5M)tsunami
- 2026M7.8
Mindanao: S; Indonesia
7 Jun 2026 · 47 km away · intensity VIII
107 deaths$25 million damagetsunami
- 1928M7.4
Cotabato,N Coast Of Illana Bay
19 Dec 1928 · 169 km away · intensity VII
97 deathsModerate damage ($1–5M)tsunami
- 1918M8.3
Mindanao: Cotabato
15 Aug 1918 · 162 km away · intensity X
52 deathsSevere damage ($5–24M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.