Reviewed by USGSIndia77y ago
M5.7 earthquake 16 km E of Along, India
Wednesday, August 16, 1950, 16:36:01 UTC · 28.180°N, 94.968°E
A magnitude 5.7 earthquake struck 16 km E of Along, India on Wednesday, August 16, 1950, 16:36:01 UTC, at a depth of 25.0 km (shallow). It is the strongest earthquake within 300 km since an M5.8 on August 16, 1950.
- Magnitude
- 5.7
- Moderate · mw
- Depth
- 25 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 earthquakeDashed circle: 75 km aftershock search areaColoured lines: estimated shaking intensity (USGS ShakeMap)
In context
How big was it, and why here?
Energy released
5 kilotons of TNT
That is about 1/3 of the Hiroshima bomb. It released about 10 times the energy of a magnitude 5.0.
Tectonic setting
21 km
from the nearest mapped plate boundary, between the Eurasian and Indian plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
25 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 75 km
USGS lists 3 M2.5+ earthquakes within 75 km in the following 30 days; the largest was M6.2 on September 13, 1950. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 25 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.61950 Assam-Tibet EarthquakeAugust 15, 1950 · 146 km E of this epicenter
- 7.373 km W of Shi Yomi, IndiaJuly 29, 1947 · 135 km W of this epicenter
- 7.264 km NNE of Sarupathar, IndiaDecember 12, 1908 · 267 km SE of this epicenter
- 7.213 km W of Dergaon, IndiaOctober 23, 1943 · 199 km SW of this epicenter
- 6.510 km S of Mokokchūng, IndiaMay 12, 1906 · 221 km S of this epicenter
- 6.481 km NNE of Sarupathar, IndiaAugust 31, 1906 · 270 km SE of this epicenter
- 6.3167 km NNE of Shi Yomi, IndiaNovember 21, 1938 · 191 km N of this epicenter
- 6.256 km NNW of Tezu, IndiaAugust 16, 1950 · 93 km E of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 7 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 1,630 recorded deaths. The most severe:
- 1950M8.6
India-China
15 Aug 1950 · 154 km away · intensity XI
1,530 deaths$20 million damagetsunami
- 1806M7.7
Tibet (Xizang Province): Shannan (Lhoka)
11 Jun 1806 · 293 km away
100 deathsModerate damage ($1–5M)
- 1713
Arunachal; Bhutan
1713 · 208 km away
Severe damage ($5–24M)
- 1943M7.2
Assam
23 Oct 1943 · 199 km away
Moderate damage ($1–5M)
- 1932M7.0
Assam
14 Aug 1932 · 248 km away
Moderate damage ($1–5M)
- 1947M7.9
India-China
29 Jul 1947 · 101 km away
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.