North Pacific Ocean

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

in force
27
last 12 months
300
since 1957
17,258
categories
22

In force now · 27

  1. JTWC-WP2426 · Storms2026-09-16
    Tropical Depression 24W is in the western North Pacific, forecast at 14.800N 148.800E on 15 September 2026, with a 34-knot wind danger swath.
  2. NAVAREA XI 410/26 · Exercises2026-09-15
    Hazardous operations take place in the North Pacific near the Marianas from 22:00 UTC September 17 to 13:00 UTC September 18 inside a bounded area.
  3. 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.
  4. 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.
  5. 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.
  6. HYDROPAC 2457/26 · Exercises2026-08-27
    Gunnery exercises occur daily from 2300Z to 0900Z, August 31 to September 29, in the North Pacific.
  7. NAVAREA XI 392/26 · Exercises2026-08-27
    Gunnery exercise daily 2300Z to 0900Z from Aug 31 to Sep 29 in North Pacific, Nanpo Shoto.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. HYDROPAC 1819/25 · Wrecks2025-07-17
    Depths between 5.4 and 18.8 meters reported at several positions in Marshall Islands, North Pacific.
  17. 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.
  18. 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.
  19. 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.
  20. 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.
  21. NAVAREA XII 208/25 · Nav aids2025-04-06
    Punta Soldado light at 03-48.50N 077-10.80W is discontinued.
  22. 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.
  23. NAVAREA XII 441/24 · Nav aids2024-06-18
    Morro Santo Domingo light at 28-14.37N 114-06.18W is unlit.
  24. 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.
  25. NAVAREA XII 721/22 · Nav aids2022-09-27
    In El Salvador, mooring buoys at 13-35.23N 089-51.10W are unlit.
  26. 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.
  27. 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

Exercises4,67027%
Incidents4,48526%
Quakes2,41614%
Missiles1,75410%
Spills7775%
Nav aids7654%
Towing5323%
Other5143%
Derelicts4773%
Cable ops2291%
Debris1641%
Surveys1481%
Ordnance1161%
Containers1131%
Wrecks370%
Storms350%
Volcanic130%
Restricted60%
Mines40%
Piracy10%
Icebergs10%
Structures10%

Archive · 17,231 cancelled

  1. NAVAREA XII 72/02 · Exercises2002-03-11 → 2002-03-16
    Hazardous operations 0131Z to 0701Z daily 16 thru 18 mar in areas bound by: a. 34-51N 120-57W, 34-53N…
  2. USGS-USP000B02Z · Quakes2002-03-11 → 2002-03-14
    Earthquake magnitude 5.8 (mwc) in 30.599N 141.566E, depth 33 km at 110146Z mar 02
  3. HYDROPAC 434/02 · Other2002-03-10 → 2002-03-11
    Bombing exercises 112200Z to 151200Z mar within ten miles of 16-01N 146-04E
  4. HYDROPAC 426/02 · Incidents2002-03-09 → 2002-03-09
    Distress signal received on 406 mhz in 38-53N 147-56E at 090803Z mar
  5. NAVAREA XII 70/02 · Missiles2002-03-07 → 2002-03-14
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  6. HYDROPAC 404/02 · Incidents2002-03-06 → 2002-03-07
    Distress signal received on 121.5 mhz in 00-02.9N 152-31.2E at 060501Z mar
  7. USGS-USP000AZMG · Quakes2002-03-04 → 2002-03-07
    Earthquake magnitude 5.5 (mwc) in 28.446N 143.275E, depth 45 km at 042021Z mar 02
  8. HYDROPAC 394/02 · Other2002-03-03 → 2002-03-09
    Bombing exercises 042200Z to 091200Z mar within ten miles of 16-01N 146-04E
  9. USGS-USP000AZD1 · Quakes2002-03-01 → 2002-03-04
    131 km s of unalaska, alaska
  10. NAVAREA XII 66/02 · Missiles2002-02-28 → 2002-03-07
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  11. NAVAREA XII 65/02 · Exercises2002-02-28 → 2002-03-01
    Hazardous operations 011051Z to 011354Z mar, alternate 021021Z to 021324Z mar in area bound by 15-14N…
  12. HYDROPAC 371/02 · Incidents2002-02-27 → 2002-03-01
    Distress signal received on 121.5 mhz in 01-20.3N 144-13.8E at 270957Z feb
  13. HYDROPAC 365/02 · Other2002-02-27 → 2002-02-27
    Bombing exercises in progress until 011200Z mar within ten miles of 16-01N 146-04E
  14. NAVAREA XII 62/02 · Nav aids2002-02-26 → 2002-02-27
    Dgps station at upolu point light 20-14-48N 155-53-00W off air 272000Z to 272200Z feb
  15. HYDROPAC 357/02 · Other2002-02-25 → 2002-03-01
    Bombing exercises 262200Z feb to 011200Z mar within ten miles of 16-01N 146-04E
  16. NAVAREA XII 60/02 · Other2002-02-25 → 2002-02-26
    Pyrotechnics exercises 260001Z to 260300Z feb along trackline between 14-30N 104-34W and 13-51N 103-52W
  17. NAVAREA XII 59/02 · Missiles2002-02-25 → 2002-03-27
    Intermittent missile firing operations 0001Z to 2400Z daily monday thru sunday in the pacific missile range…
  18. HYDROPAC 350/02 · Incidents2002-02-23 → 2002-04-12
    Distress signal received on 121.5 mhz in 06-52.4N 160-40.3E at 222212Z feb
  19. NAVAREA XII 57/02 · Exercises2002-02-23 → 2002-02-27
    Hazardous operations 281148Z to 281514Z feb, alternate 011121Z to 011444Z mar in area bound by 15-14N…
  20. HYDROPAC 343/02 · Incidents2002-02-23 → 2002-04-12
    Distress signal received on 121.5 mhz in 13-27.4N 165-03.5E at 230308Z feb

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