Reviewed by USGSIndonesia25y ago
M4.7 earthquake 183 km S of Pagar Alam, Indonesia
Wednesday, April 25, 2001, 07:05:09 UTC · 5.656°S, 102.965°E
A magnitude 4.7 earthquake struck 183 km S of Pagar Alam, Indonesia on Wednesday, April 25, 2001, 07:05:09 UTC, at a depth of 33.0 km (shallow). It is the strongest earthquake within 300 km since an M4.8 on April 25, 2001.
- Magnitude
- 4.7
- Light · mb
- Depth
- 33 km
- Shallow
- 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
169 tons of TNT
That is about 1/89 of the Hiroshima bomb. A magnitude 5.0 releases about 3 times more energy.
Tectonic setting
158 km
from the nearest mapped plate boundary, between the Sunda and Australian plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
33 km
Shallow earthquakes (under 70 km) produce the strongest surface shaking for their size, so they are the ones most likely to cause damage near the epicenter.
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 in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 640 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.9103 km S of Bengkulu, IndonesiaJune 4, 2000 · 142 km NW of this epicenter
- 7.573 km WSW of Bengkulu, IndonesiaJune 25, 1914 · 235 km NW of this epicenter
- 7.548 km SW of Kotabumi, IndonesiaJune 24, 1933 · 192 km E of this epicenter
- 7.4102 km SSE of Bengkulu, IndonesiaFebruary 13, 2001 · 117 km N of this epicenter
- 7.3161 km S of Bengkulu, IndonesiaSeptember 25, 1931 · 89 km NW of this epicenter
- 7.0164 km SSW of Pagar Alam, IndonesiaFebruary 10, 1931 · 53 km NW of this epicenter
- 7.0119 km S of Bengkulu, IndonesiaOctober 1, 1975 · 121 km NW of this epicenter
- 7.030 km WNW of Labuan, IndonesiaApril 1, 1943 · 296 km E of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 16 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 339 recorded deaths. The most severe:
- 1994M6.9
Southern Sumatera, Liwa, Lampung
15 Feb 1994 · 167 km away
207 deaths$170 million damage
- 2000M7.9
Sumatra: Bengkulu, Enggano
4 Jun 2000 · 142 km away · intensity VI
103 deaths$6 million damage
- 1914M7.6
Sumatera
25 Jun 1914 · 231 km away
20 deathsLimited damage (under $1M)tsunami
- 1979M6.6
S Sumatera
15 Dec 1979 · 264 km away
8 deathsSevere damage ($5–24M)
- 2000M6.7
Southern Sumatera: Lahat
7 Jun 2000 · 165 km away
1 deathModerate damage ($1–5M)
- 1770M7.0
Sumatra:
1770 · 129 km away
Severe damage ($5–24M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.