Icebergs

Iceberg reported in 70-50.0N 159-45.1W

Chukchi Sea · HYDROARC 39/12

What this record establishes

Archived notice · 2012-06-04 01:23Z

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) · COMCOGARD SECTOR ANCHORAGE 133/12 312040Z MAY 12.. Issued 2012-06-01 01:23Z. 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
Chukchi Sea. The parsed report position is 70.833, -159.752. 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

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. HYDROARC 34/122012-05-23 · Archived notice
  2. HYDROARC 39/12 · this notice2012-06-01 · Archived notice
  3. HYDROARC 55/122012-06-19 · Archived notice
Compare all 3 notices, changes and original texts →

Current notices and reporting history in the Chukchi Sea →

issued
2012-06-01 01:23Z
status
Archived notice
self-cancels
2012-06-04 01:23Z
authority
COMCOGARD SECTOR ANCHORAGE 133/12 312040Z MAY 12.
issued by
COMCOGARD SECTOR ANCHORAGE
sea
Chukchi Sea
position
70.833, -159.752
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

ARCTIC.
ALASKA-NORTH COAST.
ICE.
1. ICEBERG REPORTED IN 70-50.0N 159-45.1W.
2. CANCEL THIS MSG 040123Z JUN.

Reading this warning

Icebergs and ice limits
Icebergs, smaller pieces of glacier ice and the published limit of known ice.
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.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.
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.

All warning terms →

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

6 within 180 nm since 2006 · 0 in the last 12 months · 0 listed in force now

06
10
15
20
21

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

Worldwide in the collected sources

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

Record snapshot 2026-10-01 14:06Z; 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.