M4.4 earthquake 66 km ESE of San Ignacio, Philippines
A magnitude 4.4 earthquake struck 66 km ESE of San Ignacio, Philippines on Mon, May 21, 2001, 5:25 PM GMT+8 (09:25 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.5 26 km ENE of Baculin, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb), light
- Local time
- UTC
- 2001-05-21 09:25:29 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 6.846° N, 127.028° 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
- Stations used
- 30
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 3 in the 30 days before it.
After
- 4.526 km ENE of Baculin, Philippines · 9234 days ago · 45 km deep · 78 km away
- 4.628 km E of Baganga, Philippines · 9232 days ago · 33 km deep · 84 km away
- 4.128 km SE of Bobon, Philippines · 9212 days ago · 150 km deep · 60 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000af9r. Read Wed, Sep 23, 2026, 1:39 AM UTC.