M4.6 earthquake 22 km E of Union, Philippines
A magnitude 4.6 earthquake struck 22 km E of Union, Philippines on Fri, May 21, 2004, 2:10 PM GMT+8 (06:10 UTC), 78 km (48 mi) below the surface.
A larger quake followed: M4.7 19 km ENE of Bacolod, Philippines. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2004-05-21 06:10:25 UTC
- Depth
- 77.5 km (48.2 mi), intermediate-depth
- Epicenter
- 9.731° N, 126.310° E
- Region
- Philippines
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
no people dead or missing; no people injured; no buildings damaged or destroyed
From the USGS event page for usp000cvr8. U.S. Geological Survey text and figures are in the public domain.
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
- FROM_LOCATION
- Station coverage gap
- 77°
- Stations used
- 33
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 3 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.65 km S of San Miguel, Philippines · 8163 days ago · 136 km deep · 99 km away
- 4.719 km ENE of Bacolod, Philippines · 8154 days ago · 43 km deep · 80 km away
- 4.141 km ENE of Loreto, Philippines · 8115 days ago · 80 km deep · 91 km away
Before
Earthquakes todayPhilippines earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000cvr8. Read Fri, Oct 2, 2026, 4:37 AM UTC.