Ice service · United States and Canada

North American Ice Service

Recorded as: NAIS

A partnership that includes the U.S. Coast Guard's International Ice Patrol and the Canadian Ice Service. Its bulletins give the limit of all known ice off Newfoundland and reach ships as NAVAREA IV warnings every day of the ice season.

Ice services track icebergs and sea ice and publish the limits of known ice, which reach ships as navigational warnings during the ice season.

What the archive holds

4,518 messages in this archive record NAIS as their authority, issued from 2012-02-01 to 2024-05-10. None of them is in force in the latest lists we collected.

Icebergs accounts for 4,500 of 4,518 recorded messages (100%), the largest warning type group in this selection.

All of those that can be attributed to a NAVAREA belong to NAVAREA IV.

Located messages lie in 7 sea areas, most often Labrador Sea, North Atlantic Ocean and Davis Strait.

The largest yearly count is 2016, with 375 messages. Collection is incomplete between 2024-05 and 2026-08-17, so those years are not comparable.

They reached this archive through NAVAREA IV (4,512) and HYDROLANT (6).

Messages by year of issue

'12
'13
'14
'15
'16
'17
'18
'19
'20
'21
'22
'23
'24

By month of issue, all years

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Warning types

Where

NAVAREA IV 4,512

Most recently issued

  1. NAVAREA IV 523/24 · Icebergs · Labrador Sea2024-05-09
    North american ice service (nais) iceberg bulletin 100001Z may
  2. NAVAREA IV 518/24 · Icebergs · Labrador Sea2024-05-08
    North american ice service (nais) iceberg bulletin 090001Z may
  3. NAVAREA IV 515/24 · Icebergs · Labrador Sea2024-05-07
    North american ice service (nais) iceberg bulletin 080001Z may
  4. NAVAREA IV 509/24 · Icebergs · Labrador Sea2024-05-06
    North american ice service (nais) iceberg bulletin 070001Z may
  5. NAVAREA IV 506/24 · Icebergs · Labrador Sea2024-05-05
    North american ice service (nais) iceberg bulletin 060001Z may
  6. NAVAREA IV 499/24 · Icebergs · Labrador Sea2024-05-03
    North american ice service (nais) iceberg bulletin 040001Z may
  7. NAVAREA IV 493/24 · Icebergs · Labrador Sea2024-05-02
    North american ice service (nais) iceberg bulletin 030001Z may
  8. NAVAREA IV 491/24 · Icebergs · Labrador Sea2024-05-01
    North american ice service (nais) iceberg bulletin 020001Z may

Earliest in the archive

  1. NAVAREA IV 24/12 · Icebergs2012-01-31
    010001Z feb iceberg limit 52-25N 55-40W, 52-15N 52-45W, 53-00N 51-25W, 55-00N 53-30W, 60-00N 60-00W

Other ice services in NAVAREA IV

Counts are messages recording this issuer as their authority, recounted 2026-09-24; see coverage for what is collected. Not for navigation.