Other warnings in the North Atlantic Ocean

Everything the classifier did not place elsewhere.

in force
1
last 12 months
1
vs previous 12 (1)
0%
since 1996
1,267

Coverage note: the NGA archive ends 2024-05 and live collection began 2026-08-17. Warnings issued in between are here only if they were still in force when collection started, so 2024–2026 are under-counted.

In force now · 1

  1. NAVAREA XII 486/26in force2026-07-16
    U.S. Coast Guard remote communication facility in Honolulu has unreliable transmissions; broadcasts moved to Guam, DSC responses to Point Reyes.
    North Pacific · Hawaii

Longest in force

  1. NAVAREA XII 486/26in force2026-07-16 · 37 d
    U.S. Coast Guard remote communication facility in Honolulu has unreliable transmissions; broadcasts moved to Guam, DSC responses to Point Reyes.
    North Pacific · Hawaii

By year

96
98
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

Other hazards in the North Atlantic Ocean

Archive · 1,266 cancelled

  1. HYDROLANT 2032/012001-07-19 → 2001-07-20
    Unexploded ordnance vicinity: a. 62-22N 030-08W
  2. HYDROLANT 1984/012001-07-14 → 2001-07-20
    Underwater ordnance detonations 190001Z to 200530Z jul within 125 miles of 62-47N 031-56W
  3. HYDROLANT 1977/012001-07-13 → 2001-07-20
    Underwater ordnance detonations 191130Z to 200530Z jul in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  4. NAVAREA IV 263/012001-07-13 → 2001-07-20
    Underwater ordnance detonations 191130Z to 200530Z jul in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  5. HYDROLANT 1934/012001-07-09 → 2001-07-13
    Radar target reported in 47-50N 049-57W at 061430Z jul
  6. NAVAREA IV 251/012001-07-09 → 2001-07-13
    Radar target reported in 47-50N 049-57W at 061430Z jul
  7. HYDROLANT 1907/012001-07-05 → 2001-07-12
    Underwater ordnance detonations 090001Z to 112359Z jul in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  8. NAVAREA IV 239/012001-07-05 → 2001-07-12
    Underwater ordnance detonations 090001Z to 112359Z jul in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  9. HYDROLANT 1901/012001-07-05 → 2001-07-09
    Container marked by buoy and two flashing white lights adrift in 60-31.8N 004-05.2W at 050044Z jul
  10. HYDROLANT 1898/012001-07-05 → 2001-07-05
    Container marked by buoy and two flashing white lights adrift in 60-31.0N 004-07.4W at 042245Z jul
  11. HYDROLANT 1891/012001-07-04 → 2001-07-12
    Underwater ordnance detonations 090001Z to 112359Z jul within 125 miles of 62-47N 031-56W
  12. NAVAREA IV 217/012001-06-24 → 2001-06-24
    M/V lykes winter reports crewman suffered heart attack in 15-25N 038-55W at 241638Z jun
  13. HYDROLANT 1811/012001-06-22 → 2001-06-29
    Underwater ordnance detonations 291630Z to 301630Z jun within 100 miles of 55-50N 036-26W
  14. NAVAREA IV 215/012001-06-22 → 2001-06-29
    Underwater ordnance detonations 291630Z to 301630Z jun within 100 miles of 55-50N 036-26W
  15. HYDROLANT 1750/012001-06-17 → 2001-06-24
    20 meters by 15 meters wreckage adrift vicinity 58-16.6N 010-25.1W at 171545Z jun
  16. HYDROLANT 1695/012001-06-11 → 2001-06-12
    Radar targets reported at 091200Z jun in: a. 45-51N 052-48W
  17. NAVAREA IV 201/012001-06-11 → 2001-06-12
    Radar targets reported at 091200Z jun in: a. 45-51N 052-48W
  18. NAVAREA IV 198/012001-06-10 → 2001-06-10
    Underwater ordnance detonations 110600Z to 112359Z jun in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  19. HYDROLANT 1685/012001-06-10 → 2001-06-10
    Underwater ordnance detonations 110600Z to 112359Z jun in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  20. HYDROLANT 1679/012001-06-09 → 2001-06-10
    Radar target reported in 45-39N 048-59W at 091605Z jun
  21. NAVAREA IV 197/012001-06-09 → 2001-06-10
    Radar target reported in 45-39N 048-59W at 091605Z jun
  22. HYDROLANT 1643/012001-06-06 → 2001-06-12
    Underwater ordnance detonations 110600Z to 112359Z jun in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  23. NAVAREA IV 191/012001-06-06 → 2001-06-12
    Underwater ordnance detonations 110600Z to 112359Z jun in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  24. HYDROLANT 1640/012001-06-06 → 2001-06-12
    Underwater ordnance detonations 110600Z to 112359Z jun within 65 miles of 63-00N 031-51W
  25. NAVAREA IV 190/012001-06-06 → 2001-06-12
    Underwater ordnance detonations 110600Z to 112359Z jun within 65 miles of 63-00N 031-51W
  26. HYDROLANT 1623/012001-06-05 → 2001-06-11
    Morocco has established a prohibited area bound by 33-33.4N 007-45.0W, 33-36.5N 007-45.0W, 33-40.1N…
  27. HYDROLANT 1508/012001-05-24 → 2001-05-30
    Underwater ordnance detonations 290600Z to 300600Z may in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  28. NAVAREA IV 176/012001-05-24 → 2001-05-30
    Underwater ordnance detonations 290600Z to 300600Z may in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  29. HYDROLANT 1501/012001-05-24 → 2001-05-30
    Underwater ordnance detonations 290600Z to 300600Z may within 65 miles of 63-00N 031-51W
  30. HYDROLANT 1462/012001-05-20 → 2001-05-21
    Underwater ornance detonations: a. 210800Z to 232359Z may within 65 miles of 63-00N 031-51W
  31. HYDROLANT 1439/012001-05-17 → 2001-05-18
    Radar targets reported in 43-02N 049-21W, 43-03N 049-24W, 42-58N 049-42W at 171714Z may
  32. NAVAREA IV 168/012001-05-17 → 2001-05-18
    Radar targets reported in 43-02N 049-21W, 43-03N 049-24W, 42-58N 049-42W at 171714Z may
  33. HYDROLANT 1437/012001-05-17 → 2001-05-22
    Underwater ordnance detonations 211500Z to 220800Z may in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  34. NAVAREA IV 167/012001-05-17 → 2001-05-22
    Underwater ordnance detonations 211500Z to 220800Z may in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  35. HYDROLANT 1436/012001-05-17 → 2001-05-24
    Underwater ordnance detonations 210800Z to 232359Z may within 65 miles of 63-00N 031-51W
  36. HYDROLANT 1418/012001-05-16 → 2001-05-17
    M/V solano reports crewman with heart problems requiring medical assistance in 16-18N 032-30W at 151800Z may
  37. HYDROLANT 1402/012001-05-14 → 2001-05-15
    Radar target reported in 42-23N 048-12W at 141636Z may
  38. NAVAREA IV 161/012001-05-14 → 2001-05-15
    Radar target reported in 42-23N 048-12W at 141636Z may
  39. HYDROLANT 1339/012001-05-08 → 2001-05-08
    Haskeir island light 57-42N 007-41W at reduced intensity
  40. HYDROLANT 1264/012001-04-27 → 2001-04-28
    Radar target detected in 42-16.9N 054-59.2W at 271200Z apr
  41. NAVAREA IV 146/012001-04-27 → 2001-04-28
    Radar target detected in 42-16.9N 054-59.2W at 271200Z apr
  42. NAVAREA IV 142/012001-04-25 → 2001-05-02
    40 foot by 20 foot orange mooring float adrift in 32-11N 072-58W at 251914Z apr
  43. HYDROLANT 1165/012001-04-15 → 2001-08-14
    Pipelaying operations in progress until further notice by M/V solitaire vicinity of trackline: a. joining…
  44. HYDROLANT 1090/012001-04-06 → 2001-04-07
    M/V liberty on fire vicinity 14-00N 027-00W
  45. NAVAREA IV 97/012001-03-20 → 2001-03-26
    Odas buoy 41002 adrift vicinity 31-45.5N 075-50.4W at 191200Z mar
  46. NAVAREA IV 96/012001-03-19 → 2001-03-20
    Odas buoy 41002 adrift vicinity 31-45.5N 075-50.4W at 191200Z mar
  47. HYDROLANT 776/012001-03-07 → 2001-03-13
    Underwater ordnance detonations 120800Z to 122359Z mar in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  48. NAVAREA IV 84/012001-03-07 → 2001-03-13
    Underwater ordnance detonations 120800Z to 122359Z mar in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  49. HYDROLANT 771/012001-03-07 → 2001-03-15
    Underwater ordnance detonations 120800Z to 142359Z mar within 65 miles of 63-00N 031-51W
  50. HYDROLANT 677/012001-02-26 → 2001-03-04
    Underwater ordnance detonations 0800Z to 2359Z daily 02 and 03 mar in area bound by 62-46N 036-18W, 64-30N…

Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts and your national MSI service.

Other warnings in the North Atlantic Ocean — page 22 · seahazards