Quakes

Tsunami warning

The Coastal Waters of Southeast Alaska and British Columbia · NAVAREA XII 282/12

What this record establishes

Archived notice · 2012-10-28 11:08Z

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 281022Z OCT 12.. Issued 2012-10-28 10:33Z. 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
The Coastal Waters of Southeast Alaska and British Columbia. The parsed report position is 52.800, -131.800. 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

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.

  1. NAVAREA XII 280/122012-10-28 · Archived notice
  2. NAVAREA XII 281/122012-10-28 · Archived notice
  3. NAVAREA XII 282/12 · this notice2012-10-28 · Archived notice
  4. NAVAREA XII 283/122012-10-28 · Archived notice
Compare all 4 notices, changes and original texts →

Current notices and reporting history in the The Coastal Waters of Southeast Alaska and British Columbia →

issued
2012-10-28 10:33Z
status
Archived notice
authority
PTWC 281022Z OCT 12.
NAVAREA
NAVAREA XII
issued by
PTWC
sea
The Coastal Waters of Southeast Alaska and British Columbia
position
52.800, -131.800
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

NORTH PACIFIC.
HAWAII.
TSUNAMI WARNING.
1. AN EARTHQUAKE OCCURRED AT 280304Z OCT WITH A PRELIMINARY
   MAGNITUDE OF 7.7 VICINITY 52-48N 131-48W. A TSUNAMI HAS
   BEEN GENERATED WHICH COULD CAUSE DAMAGE TO THE COASTAL
   AREAS OF HAWAII. 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.
2. CANCEL NAVAREA XII 281/12(GEN).

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.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
NAVAREA
One of the 21 ocean areas of the World-Wide Navigational Warning Service, each with a coordinator that broadcasts long-range warnings.

All warning terms →

Collected reports in this area · earthquake & tsunami bulletins

40 within 180 nm since 1998 · 0 in the last 12 months · 0 listed in force now

98
00
05
10
15
20
24

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.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

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

2 earthquake & tsunami bulletins listed in force · see all

Record snapshot 2026-10-03 13:43Z; 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.