North Pacific Ocean

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

in force
38
last 12 months
290
since 1957
17,234
categories
22

In force now · 38

  1. NHC-EP122026 · Storms2026-09-10
    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 403/26 · Exercises2026-09-09
    Gunnery exercise within 25 miles of 31-14-14N 144-26-48E in North Pacific, Nanpo Shoto, daily from 2100Z to 0900Z, Sep 13 to 17.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. HYDROPAC 2534/26 · Exercises2026-09-03
    Hazardous operations are occurring near Guam in the North Pacific from 0430 to 0830 UTC on September 9.
  10. 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.
  11. 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.
  12. 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.
  13. HYDROPAC 2457/26 · Exercises2026-08-27
    Gunnery exercises occur daily from 2300Z to 0900Z, August 31 to September 29, in the North Pacific.
  14. NAVAREA XI 392/26 · Exercises2026-08-27
    Gunnery exercise daily 2300Z to 0900Z from Aug 31 to Sep 29 in North Pacific, Nanpo Shoto.
  15. 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.
  16. 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.
  17. 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.
  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. 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.
  29. 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.
  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

Exercises4,66527%
Incidents4,47426%
Quakes2,41614%
Missiles1,75210%
Spills7775%
Nav aids7654%
Towing5323%
Other5133%
Derelicts4773%
Cable ops2291%
Debris1641%
Surveys1481%
Ordnance1161%
Containers1131%
Wrecks370%
Storms300%
Volcanic130%
Restricted60%
Mines40%
Piracy10%
Icebergs10%
Structures10%

Archive · 17,196 cancelled

  1. NAVAREA XII 596/09 · Nav aids2009-12-20 → 2009-12-23
    Nos chart 19010 (19TH ed)
  2. HYDROPAC 2337/09 · Exercises2009-12-14 → 2009-12-24
    Hazardous operations 182100Z to 190800Z dec, alternate 2100Z to 0800Z commencing daily 19 thru 23 dec within…
  3. NAVAREA XII 586/09 · Missiles2009-12-13 → 2009-12-20
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  4. HYDROPAC 2331/09 · Incidents2009-12-13 → 2009-12-16
    36 foot S/V iwalani, two persons on board, overdue long beach (33-45.2N 118-10.9W) to hilo (19-42.3N…
  5. USGS-USP000H4ZU · Quakes2009-12-12 → 2009-12-15
    205 km s of severo-kuril’sk, russia
  6. HYDROPAC 2328/09 · Incidents2009-12-12 → 2010-01-09
    Two vessels overdue vicinity puluwat atoll (07-21N 149-10E)
  7. NAVAREA XII 584/09 · Exercises2009-12-11 → 2009-12-14
    Hazardous operations 1339Z to 1523Z daily 14 thru 17 dec in areas bound by: a. 34-28N 120-39W, 34-30N…
  8. NAVAREA XII 583/09 · Exercises2009-12-11 → 2009-12-11
    Hazardous operations 1339Z to 1523Z daily 13 thru 16 dec in areas bound by: a. 34-28N 120-39W, 34-30N…
  9. NAVAREA XII 579/09 · Nav aids2009-12-09 → 2009-12-10
    Nga chart 18000 (8TH ed)
  10. HYDROPAC 2303/09 · Incidents2009-12-09 → 2009-12-09
    Distress signal received on 406 mhz in 19-45.8N 124-50.3W
  11. HYDROPAC 2299/09 · Exercises2009-12-07 → 2009-12-09
    Hazardous operations 2200Z to 1300Z commencing daily 07 and 08 dec within ten miles of 16-01N 146-04E
  12. NAVAREA XII 577/09 · Exercises2009-12-07 → 2009-12-11
    Hazardous operations 1339Z to 1523Z daily 11 thru 14 dec in areas bound by: a. 34-28N 120-39W, 34-30N…
  13. HYDROPAC 2292/09 · Incidents2009-12-06 → 2010-01-17
    Distress signal received on 406 mhz in 10-19.8N 159-48.7E at 060451Z dec
  14. NAVAREA XII 575/09 · Missiles2009-12-06 → 2009-12-13
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  15. NAVAREA XII 574/09 · Exercises2009-12-06 → 2009-12-14
    Hazardous operations 112330Z to 120500Z dec, alternate 2330Z to 0500Z commencing daily 12 thru 13 dec in…
  16. NAVAREA XII 573/09 · Derelicts2009-12-06 → 2009-12-09
    Derelict 37 foot vessel partially submerged and adrift in 10-13.0N 088-43.2W
  17. HYDROPAC 2286/09 · Incidents2009-12-05 → 2009-12-06
    Distress signal received on 406 mhz in 10-09N 088-37W
  18. NAVAREA XII 570/09 · Exercises2009-12-05 → 2009-12-07
    Hazardous operations 1339Z to 1523Z daily 09 thru 14 dec in areas bound by: a. 34-28N 120-39W, 34-30N…
  19. HYDROPAC 2277/09 · Incidents2009-12-04 → 2009-12-19
    Distress signal received on 406 mhz in 07-26.9N 156-27.9E at 041241Z nov
  20. NAVAREA XII 569/09 · Derelicts2009-12-04 → 2009-12-07
    Derelict 25 foot vessel partially submerged and adrift in 10-30N 095-10W

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