Reviewed by USGSIndia77y ago
M6.3 earthquake 3 km NE of Shi Yomi, India
Sunday, October 8, 1950, 04:50:18 UTC · 28.550°N, 94.401°E
A magnitude 6.3 earthquake struck 3 km NE of Shi Yomi, India on Sunday, October 8, 1950, 04:50:18 UTC, at a depth of 25.0 km (shallow). It is the strongest earthquake within 300 km since an M8.6 on August 15, 1950.
- Magnitude
- 6.3
- Strong · mw
- Depth
- 25 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- VII
- Very 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
51 kilotons of TNT
That is about 3 times the Hiroshima bomb. It released about 106 times the energy of a magnitude 5.0.
Tectonic setting
81 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 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 47 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 · 201 km E of this epicenter
- 7.373 km W of Shi Yomi, IndiaJuly 29, 1947 · 76 km W of this epicenter
- 7.213 km W of Dergaon, IndiaOctober 23, 1943 · 213 km S of this epicenter
- 6.634 km NNW of Tawang, IndiaDecember 3, 1915 · 271 km W of this epicenter
- 6.510 km S of Mokokchūng, IndiaMay 12, 1906 · 258 km S of this epicenter
- 6.429 km SE of Trashigang, BhutanJanuary 21, 1941 · 299 km SW of this epicenter
- 6.3136 km NNE of Pāsighāt, IndiaAugust 18, 1950 · 161 km NE of this epicenter
- 6.338 km N of Shi Yomi, IndiaSeptember 30, 1950 · 36 km N of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 5 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 · 205 km away · intensity XI
1,530 deaths$20 million damagetsunami
- 1806M7.7
Tibet (Xizang Province): Shannan (Lhoka)
11 Jun 1806 · 235 km away
100 deathsModerate damage ($1–5M)
- 1713
Arunachal; Bhutan
1713 · 180 km away
Severe damage ($5–24M)
- 1943M7.2
Assam
23 Oct 1943 · 213 km away
Moderate damage ($1–5M)
- 1947M7.9
India-China
29 Jul 1947 · 40 km away
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.