M4.1 earthquake 6 km N of Unidad, Philippines
A magnitude 4.1 earthquake struck 6 km N of Unidad, Philippines on Fri, Apr 18, 2003, 11:46 AM GMT+8 (03:46 UTC), 200 km (124 mi) below the surface.
A larger quake followed: M4.6 0 km SSE of Cantilan, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb), light
- Local time
- UTC
- 2003-04-18 03:46:02 UTC
- Depth
- 200.0 km (124.3 mi), intermediate-depth
- Epicenter
- 8.593° N, 126.221° E
- Region
- Philippines
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
- Station coverage gap
- 135°
- Stations used
- 16
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.60 km SSE of Cantilan, Philippines · 8564 days ago · 157 km deep · 86 km away
- 4.33 km WNW of Bacolod, Philippines · 8559 days ago · 92 km deep · 39 km away
- 4.520 km N of Cortes, Philippines · 8557 days ago · 56 km deep · 97 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000bveb. Read Wed, Sep 30, 2026, 5:50 PM UTC.