Quakes · tsunami
Earthquake magnitude 6.4 (mww) in 56.706S 025.546W, depth 15 km at 152002Z nov 18
South Sandwich Islands Region · USGS-US1000HSAF
- issued
- 2018-11-15 20:02Z
- status
- cancelled 2018-11-18 20:02Z
- self-cancels
- 2018-11-18 20:02Z
- authority
- USGS NEIC
- sea
- South Atlantic Ocean
- position
- -56.706, -25.546
- source
- usgs · first seen 2026-09-03 15:13Z
Original warning text
SOUTH SANDWICH ISLANDS REGION. 1. EARTHQUAKE MAGNITUDE 6.4 (MWW) IN 56.706S 025.546W, DEPTH 15 KM AT 152002Z NOV 18. 2. A TSUNAMI MESSAGE WAS ISSUED FOR THIS EVENT. FOLLOW THE TSUNAMI WARNING CENTRES. 3. USGS EVENT US1000HSAF. https://earthquake.usgs.gov/earthquakes/eventpage/us1000hsaf
This area · earthquake & tsunami bulletins
271 within 180 nm since 1997 · 11 in the last 12 months · 1 in force now
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- Earthquake magnitude 6.2 (mww) in 56.206S 027.909W, depth 126 km at 022346Z sep 262026-09-02
- Earthquake magnitude 6.4 (mww) in 55.535S 028.911W, depth 26 km at 111026Z jul 262026-07-11
- Earthquake magnitude 5.7 (mww) in 56.112S 027.877W, depth 101 km at 202300Z may 262026-05-20
- Earthquake magnitude 5.7 (mww) in 57.911S 025.352W, depth 27 km at 161452Z feb 262026-02-16
- Earthquake magnitude 6.0 (mww) in 57.772S 025.599W, depth 64 km at 290730Z jan 262026-01-29
- Earthquake magnitude 5.6 (mww) in 58.664S 025.223W, depth 35 km at 171705Z dec 252025-12-17
Season · when earthquake & tsunami bulletins happen here
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Timeline · 2 messages since 2018-11-15 · closed 2018-11-18
- Earthquake magnitude 5.5 (mww) in 56.815S 025.572W, depth 10 km at 151649Z nov 182018-11-15 → 2018-11-18
- Earthquake magnitude 6.4 (mww) in 56.706S 025.546W, depth 15 km at 152002Z nov 18 this message2018-11-15 → 2018-11-18
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