North american ice service (nais) iceberg bulletin 190001Z aug
Labrador Sea · NAVAREA IV 931/23
What this record establishes
Archived notice · 2023-08-20 00:01Z
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) · NAIS 0/23 182001Z AUG 23.. Issued 2023-08-18 20:57Z. 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
- Labrador Sea. The map shows the reported line or operation extent; it is not a vessel track. 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.
- NAVAREA IV 931/23 · this notice2023-08-18 · Archived notice
- NAVAREA IV 933/232023-08-19 · Archived notice
- NAVAREA IV 938/232023-08-20 · Archived notice
- NAVAREA IV 943/232023-08-21 · Archived notice
- NAVAREA IV 945/232023-08-22 · Archived notice
- NAVAREA IV 947/232023-08-22 · Archived notice
- issued
- 2023-08-18 20:57Z
- status
- Archived notice
- self-cancels
- 2023-08-20 00:01Z
- authority
- NAIS 0/23 182001Z AUG 23.
- NAVAREA
- NAVAREA IV
- issued by
- NAIS
- sea
- Labrador Sea
- position
- 58.304, -45.457
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. NORTH AMERICAN ICE SERVICE (NAIS) ICEBERG BULLETIN 190001Z AUG. 2. ICEBERG LIMIT ALONG TRACKLINE JOINING 47-58N 053-07W, 51-10N 048-30W, 55-45N 051-20W, 57-10N 053-10W. 3. ESTIMATED ICEBERG LIMIT ALONG TRACKLINE JOINING 57-10N 053-10W, 60-15N 055-00W, 59-10N 050-25W, 58-50N 044-30W, 59-30N 041-15W, 63-35N 037-40W, 65-10N 027-40W. 4. WESTERN ICEBERG LIMIT ALONG TRACKLINE JOINING 50-42N 059-24W, 49-47N 057-50W. 5. MOST RECENT RECONNAISSANCE: SOUTHERN LIMIT ICEBERG FLIGHT 17 AUG 23. 6. NOTE THE SIGNIFICANT REDUCTION OF THE ICEBERG LIMIT SINCE 180001Z AUG BULLETIN DUE TO RECENT RECONNAISSANCE. 7. REPORT POSITION AND TIME OF ANY ICEBERGS SEA ICE OR STATIONARY RADAR TARGETS THAT MAY LIKELY BE ICE TO THE NEAREST CANADIAN COAST GUARD MARINE COMMUNICATIONS AND TRAFFIC SERVICE STATION OR USING INMARSAT CODE 42. 8. FOR MORE REPORTING INFORMATION OR TO DOWNLOAD SHAPEFILES AND WEEKLY PREDICTIONS, GO TO WWW.NAVCEN.USCG.GOV/IIP. 9. CANCEL THIS MSG 200001Z AUG 23.
Reading this warning
- Icebergs and ice limits
- Icebergs, smaller pieces of glacier ice and the published limit of known ice.
- 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.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- 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.
- Inmarsat-C / SafetyNET
- The satellite system that carries NAVAREA warnings to ships at sea, and the terminal number rescue centres give for reports.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · iceberg & sea-ice bulletins
1451 within 180 nm since 1998 · 20 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.
- North american ice service (nais) iceberg bulletin 240001Z sep2026-09-23
- North american ice service (nais) iceberg bulletin 230001Z sep2026-09-22
- North american ice service (nais) iceberg bulletin 170001Z sep2026-09-16
- North american ice service (nais) iceberg bulletin 160001Z sep2026-09-15
- North american ice service (nais) iceberg bulletin 140001Z sep2026-09-13
- North american ice service (nais) iceberg bulletin 110001Z sep2026-09-10
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 iceberg & sea-ice bulletins listed in force · see all
Record snapshot 2026-09-25 00:44Z; source collection times vary.
Icebergs
Iceberg limits and reported bergs — mostly the North American Ice Service (International Ice Patrol) bulletins in the North Atlantic. All current iceberg & sea-ice 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.