North Pacific Ocean

IHO sea area 57 · -180° to 180° E, 0° to 58° N

in force
38
last 12 months
278
since 1957
17,222
categories
22

In force now · 38

  1. NHC-EP122026 · Storms2026-09-09
    Hurricane Lowell is near 13.5N 157.2W as of September 26, with maximum sustained winds of 120 knots, moving west at 10 knots.
  2. NAVAREA XI 400/26 · Nav aids2026-09-07
    The Guam high-frequency NAVTEX station at 13-29.0N 144-50.0E in the Marianas, North Pacific, is off air.
  3. NOAAORR-11215 · Spills2026-09-07
    On September 7, 2026, a tanker truck carrying asphalt crashed into Trapper Slough near Stockton, California, causing an oil spill.
  4. NAVAREA XII 605/26 · Exercises2026-09-04
    Hazardous operations are occurring within one mile of 21-17.48N 157-59.23W from 16:00 UTC September 9 to 04:00 UTC September 11.
  5. NAVAREA XII 604/26 · Exercises2026-09-04
    Hazardous operations occur off California near 33-01.73N 118-35.32W from 19:00 UTC September 8 to 03:00 UTC September 9.
  6. NAVAREA XII 603/26 · Nav aids2026-09-04
    U.S. Coast Guard remote communication facility Astoria, Oregon, is off air from 091400Z to 092000Z September.
  7. HYDROPAC 2536/26 · Exercises2026-09-04
    Hazardous operations will occur near Guam on September 9 from 1000 to 1359 and 1400 to 1800 UTC within a defined area.
  8. HYDROPAC 2534/26 · Exercises2026-09-03
    Hazardous operations are occurring near Guam in the North Pacific from 0430 to 0830 UTC on September 9.
  9. HYDROPAC 2535/26 · Exercises2026-09-03
    Hazardous operations take place near Guam in an area bounded by 13-04N 145-18E and 13-55N 146-10E from 22:30 UTC Sep 9 to 02:30 UTC Sep 10.
  10. HYDROPAC 2533/26 · Exercises2026-09-03
    Hazardous operations near Guam from 09 22:00Z to 10 06:00Z September, in area bounded by coordinates 12-49N 146-15E to 14-01N 146-52E.
  11. NOAAORR-11212 · Spills2026-08-30
    On August 30, 2026, a sunken 25-foot vessel at Moss Landing, California is discharging diesel, creating a 50 by 100 yard sheen.
  12. HYDROPAC 2457/26 · Exercises2026-08-27
    Gunnery exercises occur daily from 2300Z to 0900Z, August 31 to September 29, in the North Pacific.
  13. NAVAREA XI 392/26 · Exercises2026-08-27
    Gunnery exercise daily 2300Z to 0900Z from Aug 31 to Sep 29 in North Pacific, Nanpo Shoto.
  14. HYDROPAC 2460/26 · Exercises2026-08-27
    Naval hazardous operations daily 01 through 05 September, 1400 to 1359 UTC, in areas near Guam, cancelled at 061459 UTC September 26.
  15. HYDROPAC 2442/26 · Missiles2026-08-26
    Rocket launching hazardous operations daily 2100Z-1300Z 30 Aug-2 Sep, 5-6 Sep, alternate 7-9 Sep, within 25 miles of 31-14.21N 144-26.80E. Cancel message 101400Z Sep 26.
  16. NAVAREA XI 391/26 · Missiles2026-08-26
    Rocket firing occurs daily from 30 August to 2, 5, and 6 September and alternate 7-9 September within 25 miles of 31-14-14N 144-26-48E.
  17. NAVAREA XII 580/26 · Cable ops2026-08-24
    Cable operations are underway by cable ship Ile de Sein along a trackline off California in the North Pacific until further notice; wide berth requested.
  18. NAVAREA XII 586/26 · Exercises2026-08-21
    Hazardous operations are underway off California from September 1 0800 UTC to October 1 0800 UTC in a defined area.
  19. NAVAREA XII 584/26 · Exercises2026-08-21
    Hazardous operations off California in an area bounded by 32-40N to 32-55N and 118-15W to 118-35W from September 1 to October 1.
  20. NAVAREA XII 585/26 · Exercises2026-08-21
    Hazardous operations are occurring off California in the North Pacific from September 1 to October 1 within a specified area.
  21. HYDROPAC 2282/26 · Cable ops2026-08-10
    Cable operations by cableship Aniek are in progress until further notice along a trackline in the North Pacific near coordinates 45-07.40N 163-31.90E to 38-48.00N 147-55.50E. Wide berth requested.
  22. NAVAREA XI 328/26 · Nav aids2026-07-21
    The Number 1 lighted buoy at Malakal Harbor in the West Carolines, North Pacific, at 07-19.17N 134-27.17E, is missing.
  23. HYDROPAC 2039/26 · Volcanic2026-07-16
    Discolored water with increased likelihood of submarine volcanic activity is reported in Northern Mariana Islands vicinity at 20-26N 145-01E on July 16 at 0013Z.
  24. NAVAREA XI 322/26 · Volcanic2026-07-16
    Discoloured water reported near 20-26.0N 145-01.0E on 16 July at 0013Z; cancels warning 0020/24.
  25. HYDROPAC 1906/26 · Nav aids2026-07-03
    The United States Coast Guard's remote communication facility at Guam (13-29N 144-50E) has unreliable broadcast and communication services.
  26. NAVAREA XII 678/25 · Structures2025-10-30
    A fish farm has been established in an area off Colombia, from 06-03N to 07-11N and 077-28W to 078-08W; wide berth requested.
  27. HYDROPAC 1819/25 · Wrecks2025-07-17
    Depths between 5.4 and 18.8 meters reported at several positions in Marshall Islands, North Pacific.
  28. NAVAREA XII 392/25 · Debris2025-06-24
    Motor vessel Morning Midas is reported to have sunk in the North Pacific at 45-16.88N 179-14.13W; vessels should report oil sheens or debris to USCG.
  29. HYDROPAC 1650/25 · Debris2025-06-24
    Vessel Morning Midas sank in North Pacific at 45-16.88N 179-14.13W; navigate with caution and report debris or oil sheens.
  30. NAVAREA XII 354/25 · Nav aids2025-06-13
    Messaging services are unreliable at Coast Guard remote communication facilities at Point Reyes, Honolulu, Kodiak, Astoria, and Cambria.
  31. NAVAREA XII 338/25 · Nav aids2025-06-07
    The US Coast Guard remote communication facility at Astoria, Oregon (46-10.00N 123-49.00W), is off the air.
  32. NAVAREA XII 208/25 · Nav aids2025-04-06
    Punta Soldado light at 03-48.50N 077-10.80W is discontinued.
  33. NAVAREA XII 862/24 · Cable ops2024-10-28
    Cable operations are in progress in the eastern North Pacific near Kiribati until further notice; a 100-meter berth is requested.
  34. NAVAREA XII 441/24 · Nav aids2024-06-18
    Morro Santo Domingo light at 28-14.37N 114-06.18W is unlit.
  35. NAVAREA XII 93/23 · Missiles2023-02-28
    Periodic missile firing operations by Pacific Missile Range Facility, Barking Sands, Kauai, Hawaii, occur in Whiskey 188; vessels should contact on channel 16.
  36. NAVAREA XII 721/22 · Nav aids2022-09-27
    In El Salvador, mooring buoys at 13-35.23N 089-51.10W are unlit.
  37. NAVAREA XII 720/22 · Nav aids2022-09-27
    Buoy 16 at Puerto de La Union, El Salvador, at 13-20.36N 087-48.99W is unlit.
  38. NAVAREA XII 243/22 · Nav aids2022-04-15
    Coronado Island South Light at 32-23.5N 117-14.5W is unlit; warning 159/21 is now cancelled.

Longest in force

  1. NAVAREA XII 243/22 · Nav aids2022-04-15
    Coronado Island South Light at 32-23.5N 117-14.5W is unlit; warning 159/21 is now cancelled.
  2. NAVAREA XII 720/22 · Nav aids2022-09-27
    Buoy 16 at Puerto de La Union, El Salvador, at 13-20.36N 087-48.99W is unlit.
  3. NAVAREA XII 721/22 · Nav aids2022-09-27
    In El Salvador, mooring buoys at 13-35.23N 089-51.10W are unlit.
  4. NAVAREA XII 93/23 · Missiles2023-02-28
    Periodic missile firing operations by Pacific Missile Range Facility, Barking Sands, Kauai, Hawaii, occur in Whiskey 188; vessels should contact on channel 16.
  5. NAVAREA XII 441/24 · Nav aids2024-06-18
    Morro Santo Domingo light at 28-14.37N 114-06.18W is unlit.

By year

57
69
71
76
77
84
85
86
87
88
89
90
91
92
93
94
95
96
97
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
25
26

By month (all years)

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

By category · since 1997

Exercises4,65927%
Incidents4,47426%
Quakes2,41614%
Missiles1,75210%
Spills7775%
Nav aids7634%
Towing5323%
Other5133%
Derelicts4773%
Cable ops2271%
Debris1641%
Surveys1481%
Ordnance1161%
Containers1131%
Wrecks370%
Storms280%
Volcanic130%
Restricted60%
Mines40%
Piracy10%
Icebergs10%
Structures10%

Archive · 17,185 cancelled

  1. NAVAREA XII 224/11 · Missiles2011-06-11 → 2011-06-15
    Hazardous operations 131530Z to 132000Z jun, alternate 1530Z to 2000Z daily 14 and 15 jun in area bound by…
  2. NAVAREA XII 222/11 · Missiles2011-06-11 → 2011-06-13
    Hazardous operations 111500Z to 112300Z and 121500Z to 122300Z jun in area bound by 31-14-00N 119-43-00W,…
  3. NAVAREA XII 221/11 · Exercises2011-06-11 → 2011-06-16
    Gunnery exercises: a. 142000Z to 150400Z jun within five miles of 54-44N 134-18W
  4. NAVAREA XII 219/11 · Missiles2011-06-10 → 2011-06-11
    Hazardous operations 131530Z to 132000Z jun, alternate 141530Z to 142000Z and 151530Z to 152000Z jun in area…
  5. NAVAREA XII 218/11 · Missiles2011-06-10 → 2011-06-13
    Hazardous operations 111500Z to 112300Z and 121500Z to 122300Z jun in area bound by 33-00N 118-57W, 33-50N…
  6. HYDROPAC 1695/11 · Derelicts2011-06-10 → 2011-06-13
    15 meter F/V, white hull, partially submerged and adrift in 37-58N 149-16E at 092140Z jun
  7. HYDROPAC 1685/11 · Derelicts2011-06-09 → 2011-06-12
    Derelict 30 foot S/V no side III, white hull, adrift vicinity 34-57.1N 168-46.8E at 090222Z jun
  8. HYDROPAC 1683/11 · Incidents2011-06-09 → 2011-06-18
    Distress signal in 22-47N 111-04W
  9. HYDROPAC 1681/11 · Incidents2011-06-08 → 2011-06-10
    Man overboard from F/V hokumaru no
  10. HYDROPAC 1667/11 · Incidents2011-06-07 → 2011-07-09
    Vessel, six persons on board, unreported pulap (07-37N 149-25E) to satawal (07-21N 149-02E)
  11. NAVAREA XII 215/11 · Other2011-06-06 → 2012-04-16
    Coast guard precautionary transit notification vicinity of fukushima japan
  12. HYDROPAC 1663/11 · Other2011-06-06 → 2012-04-16
    Coast guard precautionary transit notification vicinity of fukushima japan
  13. HYDROPAC 1656/11 · Containers2011-06-05 → 2011-06-08
    Container adrift vicinity 42-58.6N 154-33.4E at 051910Z jun
  14. NAVAREA XII 213/11 · Exercises2011-06-04 → 2011-06-10
    Hazardous operations
  15. NAVAREA XII 211/11 · Ordnance2011-06-03 → 2011-06-04
    Underwater ordnance detonations 042000Z to 042200Z jun vicinity 21-23N 176-16W
  16. USGS-USP000J2ND · Quakes2011-06-03 → 2011-06-06
    3 km ne of iwaki, japan
  17. USGS-USP000J2KZ · Quakes2011-06-03 → 2011-06-06
    258 km e of namie, japan
  18. HYDROPAC 1633/11 · Incidents2011-06-02 → 2011-06-11
    Distress signal received on 406 mhz in 25-04.1N 126-09.9W
  19. NAVAREA XII 209/11 · Nav aids2011-06-01 → 2011-06-14
    Mexican chart SM-513.2
  20. NAVAREA XII 208/11 · Exercises2011-06-01 → 2011-06-03
    Gunnery exercises 022300Z to 030200Z jun, alternate 030200Z to 030500Z jun within four miles of 58-00N 138-00W

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