Quakes
Earthquake magnitude 5.5 (mww) in 47.450S 100.044E, depth 10 km at 250851Z feb 21
Southeast Indian Ridge · USGS-US7000DDIV
- issued
- 2021-02-25 08:51Z
- status
- cancelled 2021-02-28 08:51Z
- self-cancels
- 2021-02-28 08:51Z
- authority
- USGS NEIC
- sea
- Indian Ocean
- position
- -47.450, 100.044
- source
- usgs · first seen 2026-09-03 15:13Z
Original warning text
SOUTHEAST INDIAN RIDGE. 1. EARTHQUAKE MAGNITUDE 5.5 (MWW) IN 47.450S 100.044E, DEPTH 10 KM AT 250851Z FEB 21. 2. USGS EVENT US7000DDIV. https://earthquake.usgs.gov/earthquakes/eventpage/us7000ddiv
This area · earthquake & tsunami bulletins
23 within 180 nm since 1997 · 1 in the last 12 months · 0 in force now
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- Earthquake magnitude 5.6 (mww) in 47.489S 099.962E, depth 10 km at 230541Z may 262026-05-23
- Earthquake magnitude 5.7 (mww) in 46.355S 095.976E, depth 10 km at 242222Z apr 252025-04-24
- Earthquake magnitude 6.6 (mww) in 47.809S 099.613E, depth 10 km at 160142Z apr 252025-04-16
- Earthquake magnitude 6.3 (mww) in 48.033S 099.495E, depth 10 km at 042025Z feb 222022-02-04
- Earthquake magnitude 5.8 (mww) in 47.283S 100.107E, depth 10 km at 261158Z feb 212021-02-26
- Earthquake magnitude 5.7 (mww) in 47.507S 099.954E, depth 10 km at 280432Z dec 202020-12-28
Season · when earthquake & tsunami bulletins happen here
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month of issue, all years in the archive
Timeline · 2 messages since 2021-02-25 · closed 2021-03-01
- Earthquake magnitude 5.5 (mww) in 47.450S 100.044E, depth 10 km at 250851Z feb 21 this message2021-02-25 → 2021-02-28
- Earthquake magnitude 5.8 (mww) in 47.283S 100.107E, depth 10 km at 261158Z feb 212021-02-26 → 2021-03-01
joined by proximity
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
5 earthquake & tsunami bulletins in force · see all
Quakes
Undersea earthquakes of magnitude 5.5 and above (USGS) and the tsunami bulletins NAVAREA coordinators relay. All current earthquake & tsunami bulletins →
Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.