Reviewed by USGSIndia82y ago
M6.3 earthquake 53 km W of Bamboo Flat, India
Wednesday, August 8, 1945, 09:53:44 UTC · 11.710°N, 92.226°E
A magnitude 6.3 earthquake struck 53 km W of Bamboo Flat, India on Wednesday, August 8, 1945, 09:53:44 UTC, at a depth of 20.0 km (shallow). It is the strongest earthquake within 300 km since an M8.0 on June 26, 1941.
- Magnitude
- 6.3
- Strong · mw
- Depth
- 20 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
36 kilotons of TNT
That is about 2 times the Hiroshima bomb. It released about 75 times the energy of a magnitude 5.0.
Tectonic setting
51 km
from the nearest mapped plate boundary, between the Caribbean and Cocos plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
20 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 25 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.043 km N of Bamboo Flat, IndiaJune 26, 1941 · 62 km NE of this epicenter
- 6.5171 km S of Port Blair, IndiaApril 19, 1936 · 186 km S of this epicenter
- 6.2112 km NE of Bamboo Flat, IndiaJuly 4, 1917 · 152 km NE of this epicenter
- 6.168 km N of Bamboo Flat, IndiaJuly 27, 1944 · 93 km NE of this epicenter
- 6.1211 km S of Port Blair, IndiaAugust 1, 1929 · 228 km S of this epicenter
- 6.1258 km SSE of Port Blair, IndiaOctober 7, 1938 · 292 km SE of this epicenter
- 6.0114 km NNE of Bamboo Flat, IndiaJune 27, 1941 · 142 km NE of this epicenter
- 6.0119 km SW of Port Blair, IndiaMay 13, 1925 · 105 km S of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 1 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700. The most severe:
- 1941M8.0
Andaman Islands,Madras; Sri Lanka: Colombo
26 Jun 1941 · 50 km away
Extreme damage ($25M+)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.