Volcanic activity reported in area within three miles of 18-59.00S 174-46.00W
South Pacific Ocean · HYDROPAC 3288/23
What this record establishes
Archived notice · 2024-01-22 22:19Z
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) · NAVAREA XIV 175/23 160146Z OCT 23.. Issued 2023-10-16 03:40Z. 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
- South Pacific Ocean. The parsed report position is -18.983, -174.767 with a 3.0 nm radius. 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 3288/23 and this msglater cancellation notice
Current notices and reporting history in the South Pacific Ocean →
- issued
- 2023-10-16 03:40Z
- status
- Archived notice
- authority
- NAVAREA XIV 175/23 160146Z OCT 23.
- NAVAREA
- NAVAREA XIV · named as the source of this relay
- sea
- South Pacific Ocean
- position
- -18.983, -174.767 · r 3.0 nm
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SOUTH PACIFIC. TONGA. DNC 06. VOLCANIC ACTIVITY REPORTED IN AREA WITHIN THREE MILES OF 18-59.00S 174-46.00W.
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.
- Volcanic activity
- An erupting or restless volcano near or under the sea, with a keep-clear radius around it.
- Within a radius of
- A circular area — every position within a stated distance of a point.
- 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 · volcanic activity
17 within 180 nm since 1999 · 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.
- Volcanic activity reported in area within two miles of 18-59.55S 174-46.44W2022-09-14
- A volcanic eruption has occurred in vicinity 20-30S 175-24W at 150427Z jan 222022-01-15
- Volcanic activity reported in 20-34S 175-23W2022-01-15
- Discolored water with submarine volcanic activity reported in vicinity 18-18S 174-24W at 100030Z sep2019-09-13
- Discolored water with submarine volcanic activity reported in vicinity 18-18S 174-24W2019-08-27
- Discolored water with submarine volcanic activity reported in vicinity 18-18S 174-24W at 142230Z aug 192019-08-15
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
12 volcanic activity listed in force · see all
Record snapshot 2026-09-24 23:07Z; source collection times vary.
Volcanic
Submarine eruptions, discoloured water, pumice rafts. All current volcanic activity →
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.