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
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22
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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 3118/002000-09-08 → 2000-09-14
    Underwater ordnance detonations 141000Z to 142000Z sep in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  2. HYDROLANT 2923/002000-08-22 → 2000-08-31
    Underwater ordnance detonations 230800Z to 232359Z and 300800Z to 302359Z aug in area bound by 62-46N…
  3. NAVAREA IV 349/002000-08-22 → 2000-08-31
    Underwater ordnance detonations 230800Z to 232359Z and 300800Z to 302359Z aug in area bound by 62-46N…
  4. NAVAREA IV 340/002000-08-16 → 2000-08-16
    Charleston light 32-45.5N 079-50.6W at reduced intensity 161200Z to 162000Z aug
  5. HYDROLANT 2762/002000-08-08 → 2000-08-10
    Noup head light 59-20N 003-04W at reduced intensity
  6. NAVAREA IV 318/002000-07-28 → 2000-08-04
    Odas buoy 41001 adrift in 33-20-24N 073-31-06W
  7. HYDROLANT 2642/002000-07-28 → 2000-07-29
    Underwater ordnance detonations 290800Z to 292200Z jul in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  8. NAVAREA IV 316/002000-07-28 → 2000-07-29
    Underwater ordnance detonations 290800Z to 292200Z jul in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  9. NAVAREA IV 312/002000-07-25 → 2000-08-01
    Partially submerged red object, 15 meters visible above surface, in 33-43N 041-37W at 251730Z jul
  10. HYDROLANT 2602/002000-07-24 → 2000-07-24
    Underwater ordnance detonations in progress until 242200Z jul in area bound by 62-46N 036-18W, 64-30N…
  11. NAVAREA IV 308/002000-07-24 → 2000-07-24
    Underwater ordnance detonations in progress until 242200Z jul in area bound by 62-46N 036-18W, 64-30N…
  12. NAVAREA IV 278/002000-07-10 → 2000-07-17
    White mooring buoy, three meter diameter, eight meters above water, adrift vicinity 36-30.5N 044-48.9W at…
  13. HYDROLANT 2438/002000-07-10 → 2000-07-11
    Radar targets reported at 101200Z jul in: a. 49-52N 040-13W
  14. NAVAREA IV 277/002000-07-10 → 2000-07-11
    Radar targets reported at 101200Z jul in: a. 49-52N 040-13W
  15. HYDROLANT 2437/002000-07-10 → 2000-07-10
    Possible unexploded ordnance adrift vicinity: a. 62-35N 011-38W
  16. HYDROLANT 2373/002000-07-04 → 2000-07-05
    Radar target detected in 42-39N 048-57W at 040140Z jul
  17. NAVAREA IV 261/002000-07-04 → 2000-07-05
    Radar target detected in 42-39N 048-57W at 040140Z jul
  18. HYDROLANT 2354/002000-07-03 → 2000-07-04
    Radar target detected in 43-17N 047-20W at 031800Z jul
  19. NAVAREA IV 259/002000-07-03 → 2000-07-04
    Radar target detected in 43-17N 047-20W at 031800Z jul
  20. NAVAREA IV 257/002000-07-03 → 2000-07-10
    Ten meter by four meter platform adrift in 40-40.7N 047-34.1W at 021420Z jul
  21. HYDROLANT 2338/002000-07-01 → 2000-07-02
    Radar targets detected in: a. 41-26N 042-25W at 010357Z jul
  22. NAVAREA IV 254/002000-07-01 → 2000-07-02
    Radar targets detected in: a. 41-26N 042-25W at 010357Z jul
  23. HYDROLANT 2287/002000-06-27 → 2000-06-30
    Underwater ordnance detonations 290600Z to 292359Z jun in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  24. NAVAREA IV 246/002000-06-27 → 2000-06-30
    Underwater ordnance detonations 290600Z to 292359Z jun in area bound by 62-46N 036-18W, 64-30N 033-10W,…
  25. NAVAREA IV 241/002000-06-26 → 2000-07-03
    12 foot orange and brown object with antenna adrift in 37-17N 063-28W at 260630Z jun
  26. HYDROLANT 2156/002000-06-16 → 2000-06-20
    Prohibited area established in area bound by 33-33.4N 007-45.0W, 33-36.3N 007-45.0W, 33-40.1N 007-37.0W,…
  27. HYDROLANT 2152/002000-06-15 → 2000-06-22
    Possible floating ordnance adrift vicinity: a. 54-36.3N 033-58.4W at 150600Z jun
  28. HYDROLANT 2137/002000-06-14 → 2000-06-20
    Possible floating ordnance adrift in 52-05N 040-24W at 132317Z jun
  29. HYDROLANT 2135/002000-06-14 → 2000-06-15
    Radar target detected in 41-30N 048-45W at 140900Z jun
  30. NAVAREA IV 227/002000-06-14 → 2000-06-15
    Radar target detected in 41-30N 048-45W at 140900Z jun
  31. HYDROLANT 2124/002000-06-13 → 2000-06-14
    Radar target detected in 42-11N 048-43W at 130615Z jun
  32. NAVAREA IV 224/002000-06-13 → 2000-06-14
    Radar target detected in 42-11N 048-43W at 130615Z jun
  33. HYDROLANT 1877/002000-05-24 → 2000-05-25
    Radar target detected in 42-15N 045-41W at 232215Z may
  34. NAVAREA IV 201/002000-05-24 → 2000-05-25
    Radar target detected in 42-15N 045-41W at 232215Z may
  35. NAVAREA IV 194/002000-05-22 → 2000-05-23
    Radar target detected in 46-47N 040-05W at 221409Z may
  36. HYDROLANT 1856/002000-05-22 → 2000-05-23
    Radar targets detected at 221500Z may in: a. 41-15N 048-38W
  37. NAVAREA IV 193/002000-05-22 → 2000-05-23
    Radar targets detected at 221500Z may in: a. 41-15N 048-38W
  38. HYDROLANT 1773/002000-05-17 → 2000-05-17
    Aircraft ditched in 40-32.2N 016-23.9W
  39. HYDROLANT 1709/002000-05-12 → 2000-05-13
    Radar target reported in 49-10N 043-05W
  40. NAVAREA IV 164/002000-05-12 → 2000-05-13
    Radar target reported in 49-10N 043-05W
  41. NAVAREA IV 162/002000-05-12 → 2000-05-19
    Conical object, eight meters above water, adrift in 33-41.7N 047-00.2W
  42. HYDROLANT 1689/002000-05-11 → 2000-05-12
    Radar target reported in 49-05N 043-06W at 112018Z may
  43. NAVAREA IV 159/002000-05-11 → 2000-05-12
    Radar target reported in 49-05N 043-06W at 112018Z may
  44. NAVAREA IV 144/002000-04-29 → 2000-05-06
    Steel piling, protruding 15 feet above water, adrift in 33-11.2N 042-09.4W
  45. NAVAREA IV 129/002000-04-19 → 2000-04-26
    Steel piling, protruding 30 feet above water, adrift in 33-35N 041-56W
  46. HYDROLANT 1376/002000-04-18 → 2000-08-25
    Unexploded ordnance vicinity 62-46N 028-17W
  47. NAVAREA IV 125/002000-04-17 → 2000-04-18
    Underwater ordnance detonations 180800Z to 182359Z and 200800Z to 202359Z apr in area bound by 62-46N…
  48. HYDROLANT 1361/002000-04-17 → 2000-04-18
    Underwater ordnance detonations 180800Z to 182359Z and 200800Z to 202359Z apr in area bound by 62-46N…
  49. HYDROLANT 1235/002000-04-07 → 2000-04-08
    Unexploded ordnance vicinity 65-30N 025-30W
  50. NAVAREA IV 113/002000-04-06 → 2000-04-06
    Pyrotechnics exercises in progress until 061930Z apr vicinity 32-20N 078-50W

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 24 · seahazards