Icebergs

North american ice service (nais) iceberg bulletin 070001Z apr

Labrador Sea · NAVAREA IV 307/20

What this record establishes

Archived notice · 2020-04-08 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 061929Z APR 20.. Issued 2020-04-06 20:04Z. 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.

  1. NAVAREA IV 244/202020-03-17 · Archived notice
  2. NAVAREA IV 248/202020-03-18 · Archived notice
  3. NAVAREA IV 258/202020-03-19 · Archived notice
  4. NAVAREA IV 263/202020-03-20 · Archived notice
  5. NAVAREA IV 269/202020-03-21 · Archived notice
  6. NAVAREA IV 271/202020-03-22 · Archived notice
Compare all 37 notices, changes and original texts →

Current notices and reporting history in the Labrador Sea →

issued
2020-04-06 20:04Z
status
Archived notice
self-cancels
2020-04-08 00:01Z
authority
NAIS 061929Z APR 20.
NAVAREA
NAVAREA IV
issued by
NAIS
sea
Labrador Sea
position
53.800, -49.803
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 070001Z APR.
2. WARNING! THE INTERNATIONAL ICE PATROL
   IS EXPERIENCING REDUCED ICEBERG
   RECONNAISSANCE. ALL ICEBERG LIMITS
   REPORTED BELOW ARE ESTIMATED.
   PLEASE NAVIGATE WITH CAUTION.
3. ICEBERG LIMIT ALONG TRACKLINE JOINING
   47-37N 056-26W, 45-25N 056-10W,
   44-20N 050-45W, 44-50N 046-30W,
   47-20N 044-00W, 49-00N 043-45W,
   53-30N 048-00W.
4. ESTIMATED ICEBERG LIMIT ALONG
   TRACKLINE JOINING
   53-30N 048-00W, 58-30N 054-30W,
   56-30N 048-00W, 58-30N 038-00W,
   62-00N 038-00W, 65-00N 028-00W.
5. WESTERN ICEBERG LIMIT ALONG TRACKLINE
   JOINING
   50-17N 060-28W, 49-18N 058-10W.
6. SEA ICE LIMIT ALONG TRACKLINES
   JOINING:
   A. 45-50N 060-05W, 46-10N 058-55W,
      47-45N 061-20W, 48-45N 064-05W.
   B. 49-25N 067-25W, 49-55N 064-20W.
   C. 49-15N 062-00W, 47-30N 059-20W,
      47-10N 055-25W.
   D. 47-40N 052-40W, 47-45N 050-55W,
      48-50N 050-05W, 55-00N 053-00W,
      56-25N 057-00W, 58-00N 058-45W,
      60-55N 059-40W, 62-50N 057-40W.
   E. 62-25N 040-52W, 61-50N 041-10W,
      60-30N 042-03W, 59-45N 042-35W,
      59-09N 043-04W, 59-28N 044-28W,
      59-39N 044-31W, 59-54N 044-09W.
7. MOST RECENT RECONNAISSANCE:
   SOUTHERN LIMIT ICEBERG FLIGHT 05 APR 20.
8. 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.
9. FOR MORE REPORTING INFORMATION OR TO
   DOWNLOAD SHAPEFILES AND WEEKLY PREDICTIONS,
   GO TO WWW.NAVCEN.USCG.GOV/IIP.
10. CANCEL THIS MSG 080001Z APR 20.

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.

All warning terms →

Collected reports in this area · iceberg & sea-ice bulletins

1880 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
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

6 iceberg & sea-ice bulletins listed in force · see all

Record snapshot 2026-10-02 11:49Z; 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.