Reviewed by USGSIndia86y ago
M6.0 earthquake 23 km WSW of Udalguri, India
Monday, January 27, 1941, 02:30:06 UTC · 26.699°N, 91.875°E
A magnitude 6.0 earthquake struck 23 km WSW of Udalguri, India on Monday, January 27, 1941, 02:30:06 UTC, at a depth of 15.0 km (shallow). It is the strongest earthquake within 300 km since an M6.4 on January 21, 1941.
- Magnitude
- 6.0
- Strong · mw
- Depth
- 15 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
17 kilotons of TNT
That is about the energy of the Hiroshima bomb. It released about 36 times the energy of a magnitude 5.0.
Tectonic setting
37 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
15 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 22 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.124 km N of Kishorganj, BangladeshJuly 8, 1918 · 251 km SW of this epicenter
- 7.028 km SSW of Lakhipur, IndiaJuly 2, 1930 · 197 km SW of this epicenter
- 6.99 km NNE of Netrakona, BangladeshSeptember 9, 1923 · 223 km SW of this epicenter
- 6.634 km NNW of Tawang, IndiaDecember 3, 1915 · 128 km N of this epicenter
- 6.510 km S of Mokokchūng, IndiaMay 12, 1906 · 269 km E of this epicenter
- 6.429 km SE of Trashigang, BhutanJanuary 21, 1941 · 53 km N of this epicenter
- 6.213 km NW of Imphal, IndiaSeptember 22, 1930 · 281 km SE of this epicenter
- 5.922 km NE of Tura, IndiaMarch 6, 1933 · 190 km SW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 9 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 1,694 recorded deaths. The most severe:
- 1897M8.0
Assam; Bangladesh
12 Jun 1897 · 141 km away · intensity X
1,542 deathsExtreme damage ($25M+)tsunami
- 1806M7.7
Tibet (Xizang Province): Shannan (Lhoka)
11 Jun 1806 · 201 km away
100 deathsModerate damage ($1–5M)
- 1923M6.9
Mymensingh
9 Sep 1923 · 223 km away
50 deathsModerate damage ($1–5M)
- 1869
Assam: Cachar,Silchar
10 Jan 1869 · 252 km away
2 deathsSevere damage ($5–24M)
- 1930M7.1
Dhubri,Assam
2 Jul 1930 · 230 km away · intensity IX
Severe damage ($5–24M)
- 1713
Arunachal; Bhutan
1713 · 143 km away
Severe damage ($5–24M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.