Quakes

Cancel NAVAREA XII 315/20 and this msg, tsunami warning cancelled

Gulf of Alaska · Eastern North Pacific · Alaska · NAVAREA XII 316/20

What this record establishes

Archived notice · 2020-07-22 08:55Z

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 220829Z JUL 20.. Issued 2020-07-22 08:55Z. 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 · Eastern North Pacific · Alaska. No usable coordinates were parsed; a location-based nearby search is unavailable. 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. USGS-US7000ASVB2020-07-22 · Cancelled notice
  2. USGS-US7000ASX42020-07-22 · Cancelled notice
  3. NAVAREA XII 313/202020-07-22 · Archived notice
  4. NAVAREA XII 314/202020-07-22 · Archived notice
  5. USGS-US7000ASY02020-07-22 · Cancelled notice
  6. NAVAREA XII 315/202020-07-22 · Archived notice
Compare all 8 notices, changes and original texts →
issued
2020-07-22 08:55Z
status
Archived notice
authority
NTWC 220829Z JUL 20.
NAVAREA
NAVAREA XII
issued by
NTWC
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

GULF OF ALASKA.
EASTERN NORTH PACIFIC.
ALASKA.
CANCEL NAVAREA XII 315/20 AND THIS MSG,
TSUNAMI WARNING CANCELLED.

Reading this warning

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 →

Nearby notices listed in force · within 120 nm

No parsed position is available for this comparison.

Worldwide in the collected sources

2 earthquake & tsunami bulletins listed in force · see all

Record snapshot 2026-10-03 12:25Z; 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.