Prn 31 unusable 140930Z to 142130Z jan
HYDROLANT 66/99
What this record establishes
Archived notice · 1999-01-14 00:00Z
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). Issued 1999-01-11 19:06Z. 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
- No named location parsed. 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
- Ridens southeast buoy 50-43N 001-19E unlitcancelled by this notice
- Seismic survey operations in progress until further notice by M/V geco gamma towing four 3000 meter long…cancelled by this notice
- Cable operations in progress until further notice by cableship iris in vicinity of trackline between 59-57N…cancelled by this notice
- Medical distress msg received from M/V jahre SPRAY/LAWR2 in 13-21N 030-04W at 111332Z jancancelled by this notice
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 1999-01-14 09:30Z | 1999-01-14 21:30Z | — | 12 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 1999-01-11 19:06Z
- status
- Archived notice
- self-cancels
- 1999-01-14 22:30Z
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. PRN 31 UNUSABLE 140930Z TO 142130Z JAN. 2. CANCEL HYDROLANT 2035/98(37), NAVAID RESTORED. 3. CANCEL HYDROLANT 2284/98(37), OPERATIONS COMPLETED. 4. CANCEL HYDROLANT 44/99(35), OPERATIONS SUSPENDED. 5. CANCEL HYDROLANT 65/99(51), REQUEST CANCELLED. 6. CANCEL THIS MSG 142230Z JAN.
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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Nearby notices listed in force · within 120 nm
No parsed position is available for this comparison.
Worldwide in the collected sources
134 aids-to-navigation notices listed in force · see all
Record snapshot 2026-10-03 23:03Z; source collection times vary.
Nav aids
Lights extinguished, buoys off station, RACON/NAVTEX outages. All current aids-to-navigation notices →
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.