Reviewed by USGSIndonesia28y ago
M4.1 earthquake 106 km S of Padang, Indonesia
Saturday, April 4, 1998, 05:58:26 UTC · 1.913°S, 100.383°E
A magnitude 4.1 earthquake struck 106 km S of Padang, Indonesia on Saturday, April 4, 1998, 05:58:26 UTC, at a depth of 51.3 km (shallow).
- Magnitude
- 4.1
- Light · mb
- Depth
- 51 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
21 tons of TNT
That is about 1/707 of the Hiroshima bomb. A magnitude 5.0 releases about 22 times more energy.
Tectonic setting
71 km
from the nearest mapped plate boundary, between the North Andes and South American plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
51 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 217 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.726 km S of Sijunjung, IndonesiaJune 9, 1943 · 125 km NE of this epicenter
- 7.6212 km W of Pariaman, IndonesiaDecember 28, 1935 · 300 km NW of this epicenter
- 7.676 km SSW of Sungai Penuh, IndonesiaJune 3, 1909 · 126 km SE of this epicenter
- 7.573 km WSW of Bengkulu, IndonesiaJune 25, 1914 · 272 km SE of this epicenter
- 7.478 km NNW of Curup, IndonesiaJune 8, 1943 · 226 km SE of this epicenter
- 7.095 km W of Pariaman, IndonesiaApril 1, 1998 · 197 km NW of this epicenter
- 7.0122 km W of Pariaman, IndonesiaMay 8, 1946 · 200 km NW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 15 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 404 recorded deaths. The most severe:
- 1797M8.0
Sw. Sumatra
10 Feb 1797 · 263 km away · intensity IX
300 deathsModerate damage ($1–5M)tsunami
- 1995M6.8
Sumatera, Jambi Province
6 Oct 1995 · 118 km away
84 deathsExtreme damage ($25M+)
- 1914M7.6
Sumatera
25 Jun 1914 · 275 km away
20 deathsLimited damage (under $1M)tsunami
- 1909M7.6
Sw Sumatra: Kerintji, Redjanglebong
3 Jun 1909 · 69 km away
Severe damage ($5–24M)tsunami
- 1833M8.3
Sumatra: Bengkulu
24 Nov 1833 · 67 km away · intensity IX
Moderate damage ($1–5M)tsunami
- 1926M6.6
Sumatera
28 Jun 1926 · 248 km away · intensity IX
Moderate damage ($1–5M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.