Earthquake with magnitude of 7.2 has occurred in vicinity 61-18N 149-48W at 301729Z nov
Gulf of Alaska · HYDROPAC 4282/18
What this record establishes
Archived notice · 2018-11-30 19:49Z
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) · NTWC 301737Z NOV 18.. Issued 2018-11-30 18:15Z. 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
- Gulf of Alaska. The parsed report position is 59.715, -150.788. 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 4282/18 and this msglater cancellation notice
These messages are connected by recorded cancellation references. The links establish relationships between notices; they do not by themselves confirm a single object, a continuous track, or recovery.
- HYDROPAC 4282/18 · this notice2018-11-30 · Archived notice
- HYDROPAC 4284/182018-11-30 · Archived notice
Current notices and reporting history in the Gulf of Alaska →
- issued
- 2018-11-30 18:15Z
- status
- Archived notice
- authority
- NTWC 301737Z NOV 18.
- issued by
- NTWC
- sea
- Gulf of Alaska
- position
- 59.715, -150.788
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
GULF OF ALASKA. ALASKA. DNC 25. EARTHQUAKE WITH MAGNITUDE OF 7.2 HAS OCCURRED IN VICINITY 61-18N 149-48W AT 301729Z NOV. A TSUNAMI WARNING IS IN EFFECT FOR THE COOK INLET AREA AND SOUTHERN KENAI PENINSULA. FORECASTED TSUNAMI ACTIVITY IS FORECASTED TO START AT THE FOLLOWING TIMES: A. KODIAK (57-47.6N 152-23.6W) AT 301825Z NOV. B. SEWARD (60-07.5N 149-26.0W) AT 301830Z NOV. C. HOMER (59-38.6N 151-31.6W) AT 302045Z NOV.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- 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.
- 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.
Collected reports in this area · earthquake & tsunami bulletins
28 within 180 nm since 1998 · 1 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.
- 12 km wnw of susitna, alaska2025-11-27
- 58 km e of port alsworth, alaska2021-12-21
- 73 km n of chickaloon, alaska2021-05-31
- 61 km ssw of nanwalek, alaska2019-05-27
- 7 km nnw of anchorage, alaska2018-11-30
- 1 km se of point mackenzie, alaska2018-11-30
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
1 earthquake & tsunami bulletins listed in force · see all
Record snapshot 2026-09-29 14:52Z; 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.