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. HYDROPAC 810/02 · Other2002-04-30 → 2002-04-01
    Bombing exercises 302200Z apr to 010730Z may within ten miles of 16-01N 146-04E
  2. HYDROPAC 805/02 · Exercises2002-04-29 → 2002-05-01
    Hazardous operations 1700Z to 0100Z commencing daily 03 thru 05 may in area bound by 19-21N 166-55E, 16-36N…
  3. NAVAREA XII 125/02 · Exercises2002-04-29 → 2002-05-04
    Hazardous operations 0924Z to 1105Z daily 04 thru 06 may in areas bound by: a. 34-26N 120-41W, 34-28N…
  4. USGS-USP000B3BY · Quakes2002-04-28 → 2002-05-01
    Earthquake magnitude 5.6 (mwc) in 1.793N 102.070W, depth 10 km at 282016Z apr 02
  5. NAVAREA XII 124/02 · Derelicts2002-04-28 → 2002-05-05
    Derelict S/V orion, white hull with orange and brown trim, adrift in 24-30.1N 133-19.4W
  6. HYDROPAC 786/02 · Incidents2002-04-26 → 2002-06-14
    Distress signal received on 406 mhz in 13-25N 145-16E at 261622Z apr
  7. USGS-USP000B37M · Quakes2002-04-26 → 2002-04-29
    20 km ssw of merizo village, guam
  8. NAVAREA XII 119/02 · Missiles2002-04-26 → 2002-05-27
    Intermittent missile firing operations 0001Z to 2400Z daily monday thru sunday in the pacific missile range…
  9. USGS-USP000B36W · Quakes2002-04-26 → 2002-04-29
    141 km ene of petropavlovsk-kamchatsky, russia
  10. NAVAREA XII 116/02 · Missiles2002-04-25 → 2002-05-02
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  11. USGS-USP000B31P · Quakes2002-04-24 → 2002-04-27
    123 km sw of adak, alaska
  12. HYDROPAC 761/02 · Incidents2002-04-23 → 2002-04-23
    Distress signal received from M/V marseilles on 406 mhz in 08-21.8N 167-18.9E at 232113Z apr
  13. HYDROPAC 747/02 · Incidents2002-04-21 → 2002-06-06
    Distress signal received on 243 mhz in 23-28N 158-46E at 212000Z apr
  14. HYDROPAC 744/02 · Other2002-04-21 → 2002-04-26
    Bombing exercises 212030Z to 260930Z apr within ten miles of 16-01N 146-04E
  15. HYDROPAC 743/02 · Incidents2002-04-21 → 2002-06-06
    Distress signal received on 121.5 mhz in 27-35N 150-02E at 211033Z apr
  16. HYDROPAC 731/02 · Incidents2002-04-19 → 2002-05-31
    Distress signal received on 121.5 mhz in 31-10N 158-37E at 192023Z apr
  17. USGS-USP000B2PF · Quakes2002-04-18 → 2002-04-21
    24 km wsw of papanoa, mexico
  18. USGS-USP000B2MV · Quakes2002-04-18 → 2002-04-21
    27 km ssw of nuxco, mexico
  19. HYDROPAC 703/02 · Incidents2002-04-16 → 2002-05-31
    Distress signal received on 121.5 mhz in 36-56.5N 171-04.7E at 161713Z apr
  20. HYDROPAC 698/02 · Exercises2002-04-16 → 2002-04-17
    Hazardous operations 1700Z to 0100Z commencing daily 17 thru 18 apr in area bound by 19-21N 166-55E, 16-36N…

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