Quakes · tsunami
108 km wsw of adak, alaska
USGS-US1000GA0Z
- issued
- 2018-08-15 21:56Z
- status
- cancelled 2018-08-18 21:56Z
- self-cancels
- 2018-08-18 21:56Z
- authority
- USGS NEIC
- sea
- North Pacific Ocean
- position
- 51.423, -178.026
- source
- usgs · first seen 2026-09-03 15:13Z
Original warning text
108 KM WSW OF ADAK, ALASKA. 1. EARTHQUAKE MAGNITUDE 6.5 (MWW) IN 51.423N 178.026W, DEPTH 34 KM AT 152156Z AUG 18. 2. A TSUNAMI MESSAGE WAS ISSUED FOR THIS EVENT. FOLLOW THE TSUNAMI WARNING CENTRES. 3. USGS EVENT US1000GA0Z. https://earthquake.usgs.gov/earthquakes/eventpage/us1000ga0z
This area · earthquake & tsunami bulletins
138 within 180 nm since 1997 · 3 in the last 12 months · 0 in force now
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- 103 km se of atka, alaska2026-07-26
- 67 km ssw of adak, alaska2025-11-23
- 122 km sw of adak, alaska2025-09-21
- 88 km sse of adak, alaska2025-03-22
- 87 km sse of adak, alaska2025-03-21
- 88 km sse of adak, alaska2025-03-21
Season · when earthquake & tsunami bulletins happen here
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month of issue, all years in the archive
Timeline · 2 messages since 2018-08-15 · closed 2018-08-26
- 108 km wsw of adak, alaska this message2018-08-15 → 2018-08-18
- 97 km sw of adak, alaska2018-08-23 → 2018-08-26
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
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