Reviewed by USGSIndonesia101y ago
M6.4 earthquake 10 km W of Pariaman, Indonesia
Monday, June 28, 1926, 06:15:49 UTC · 0.613°S, 100.025°E
A magnitude 6.4 earthquake struck 10 km W of Pariaman, Indonesia on Monday, June 28, 1926, 06:15:49 UTC, at a depth of 35.0 km (shallow). It is the strongest earthquake within 300 km since an M6.6 on June 28, 1926.
- Magnitude
- 6.4
- Strong · mw
- Depth
- 35 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- VI
- Strong (ShakeMap)
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquakeColoured lines: estimated shaking intensity (USGS ShakeMap)
In context
How big was it, and why here?
Energy released
60 kilotons of TNT
That is about 4 times the Hiroshima bomb. It released about 126 times the energy of a magnitude 5.0.
Tectonic setting
237 km
from the nearest mapped plate boundary, between the North Andes and South American plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
35 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 100 km
USGS has not published any M2.5+ earthquake within 100 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 6 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.676 km SSW of Sungai Penuh, IndonesiaJune 3, 1909 · 267 km SE of this epicenter
- 6.7214 km SW of Sibolga, IndonesiaMay 29, 1914 · 291 km W of this epicenter
- 6.650 km S of Pekanbaru, IndonesiaJune 28, 1926 · 172 km NE of this epicenter
- 6.563 km SSW of Padang, IndonesiaSeptember 22, 1918 · 94 km S of this epicenter
- 6.0135 km SW of Padang, IndonesiaApril 16, 1917 · 148 km S of this epicenter
- 5.8100 km SW of Sungai Penuh, IndonesiaApril 16, 1915 · 240 km S of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 11 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 2,355 recorded deaths. The most severe:
- 1861M8.5
Lagundi, Simuk, Tello I
16 Feb 1861 · 284 km away · intensity IX
1,105 deathsModerate damage ($1–5M)tsunami
- 1861M7.0
Sw. Sumatra
9 Mar 1861 · 236 km away
950 deathsSevere damage ($5–24M)tsunami
- 1797M8.0
Sw. Sumatra
10 Feb 1797 · 133 km away · intensity IX
300 deathsModerate damage ($1–5M)tsunami
- 1909M7.6
Sw Sumatra: Kerintji, Redjanglebong
3 Jun 1909 · 189 km away
Severe damage ($5–24M)tsunami
- 1833M8.3
Sumatra: Bengkulu
24 Nov 1833 · 216 km away · intensity IX
Moderate damage ($1–5M)tsunami
- 1926M6.6
Sumatera
28 Jun 1926 · 172 km away · intensity IX
Moderate damage ($1–5M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.