An earthquake has occurred at 172334Z jul with a preliminary magnitude of 7.4 in vicinity 54-12N 169-12E
Bering Sea · HYDROPAC 2463/17
What this record establishes
Archived notice · 2017-07-18 01:05Z
This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.
- Source and dates
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · PTWC 172345Z JUL 17.. Issued 2017-07-17 23:59Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- Bering Sea. The parsed report position is 54.200, 169.200. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROPAC 2463/17 and this msglater cancellation notice
These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.
- USGS-US20009WWJ2017-07-17 · Cancelled notice
- USGS-US20009X422017-07-17 · Cancelled notice
- HYDROPAC 2463/17 · this notice2017-07-17 · Archived notice
- USGS-US2000A21G2017-07-28 · Cancelled notice
- issued
- 2017-07-17 23:59Z
- status
- Archived notice
- authority
- PTWC 172345Z JUL 17.
- issued by
- PTWC
- sea
- Bering Sea
- position
- 54.200, 169.200
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BERING SEA. AN EARTHQUAKE HAS OCCURRED AT 172334Z JUL WITH A PRELIMINARY MAGNITUDE OF 7.4 IN VICINITY 54-12N 169-12E. A TSUNAMI MAY HAVE BEEN GENERATED. TSUNAMI WAVES ARE POSSIBLE ALONG SOME COASTS. TSUNAMI WAVE HEIGHTS CANNOT BE PREDICTED AND MAY BE A SERIES OF WAVES WHICH COULD BE DANGEROUS FOR SEVERAL HOURS AFTER THE INITIAL WAVE ARRIVAL.
Reading this warning
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- Position (degrees and minutes)
- How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
Collected reports in this area · earthquake & tsunami bulletins
45 within 180 nm since 1997 · 0 in the last 12 months · 0 listed in force now
Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.
- 46 km nnw of attu station, alaska2025-04-02
- 153 km ese of ust’-kamchatsk staryy, russia2025-02-26
- Earthquake magnitude 5.7 (mww) in 54.660N 168.215E, depth 12 km at 011649Z aug 232023-08-01
- 254 km ese of ust’-kamchatsk staryy, russia2022-09-20
- 258 km nw of attu station, alaska2021-12-29
- 280 km se of ust’-kamchatsk staryy, russia2020-04-04
Month of issue in the collected archive
All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.
Nearby notices listed in force · within 120 nm
No other collected notice is currently listed in force within this radius. This does not establish safe conditions.
Worldwide in the collected sources
3 earthquake & tsunami bulletins listed in force · see all
Record snapshot 2026-10-01 08:32Z; source collection times vary.
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.