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 · Storms2026-09-18
    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 283/00 · Incidents2000-02-17 → 2000-02-17
    Distress signal received on 406 mhz from M/V h. ismail kaptanoglu in 21-42.7N 173-44.2E
  2. HYDROPAC 282/00 · Cable ops2000-02-17 → 2000-03-18
    Cable laying operations 181500Z feb to 180001Z mar by cableship nexus vicinity of trackline joining 34-07.6N…
  3. NAVAREA XII 49/00 · Missiles2000-02-17 → 2000-02-24
    Intermittent missile firing operations take place 0001Z to 2359Z daily monday thru sunday in the naval air…
  4. HYDROPAC 281/00 · Incidents2000-02-17 → 2000-02-18
    Distress signal received on 121.5 mhz in 27-03.4N 173-39.2E
  5. HYDROPAC 280/00 · Incidents2000-02-16 → 2000-02-18
    Distress signal received on 243 mhz in 36-06.0N 176-41.9E
  6. NAVAREA XII 48/00 · Exercises2000-02-15 → 2000-02-22
    Hazardous operations 0852Z to 1051Z daily 20 thru 22 feb in areas bound by: a. 34-28N 120-43W, 34-28N…
  7. NAVAREA XII 47/00 · Cable ops2000-02-15 → 2000-02-28
    Cable laying operations 18 feb until further notice by cableship fresnel along tracklines joining: a.…
  8. HYDROPAC 267/00 · Incidents2000-02-14 → 2000-02-16
    Distress signal received on 406 mhz in 05-46.2N 144-20.3E at 141029Z feb
  9. NAVAREA XII 46/00 · Containers2000-02-13 → 2000-02-20
    20 containers adrift in 36-53.1N 173-54.5E
  10. HYDROPAC 258/00 · Incidents2000-02-12 → 2000-02-12
    M/V china progress in distress vicinity 29-52N 153-28E
  11. HYDROPAC 253/00 · Ordnance2000-02-11 → 2000-02-17
    Underwater ordnance detonations 170400Z to 170700Z feb within four miles of trackline between 06-05N 134-05E…
  12. NAVAREA XII 45/00 · Exercises2000-02-11 → 2000-02-17
    Hazardous operations 170400Z to 170600Z feb in areas bound by: a. 31-10N 117-35W, 31-10N 116-46W, 30-25N…
  13. NAVAREA XII 43/00 · Missiles2000-02-10 → 2000-02-17
    Intermittent missile firing operations take place 0001Z to 2359Z daily monday thru sunday in the naval air…
  14. HYDROPAC 241/00 · Exercises2000-02-09 → 2000-02-13
    Hazardous operations 120900Z to 121030Z and 130900Z to 131030Z feb within 108 miles of 24-23N 161-46E
  15. HYDROPAC 240/00 · Incidents2000-02-09 → 2000-03-24
    Distress signal received on 8364 khz vicinity 34-15N 150-09E
  16. HYDROPAC 228/00 · Incidents2000-02-05 → 2000-02-07
    19 foot skiff, two persons on board, overdue vicinity 07-00N 151-45E
  17. HYDROPAC 224/00 · Incidents2000-02-05 → 2000-03-24
    Liferaft with canopy adrift in 04-04N 158-14E
  18. NAVAREA XII 37/00 · Missiles2000-02-03 → 2000-02-10
    Intermittent missile firing operations take place 0001Z to 2359Z daily monday thru sunday in the naval air…
  19. HYDROPAC 214/00 · Exercises2000-02-03 → 2000-02-10
    Hazardous operations 080130Z to 080230Z feb, alternate 0130Z to 0230Z daily 09 thru 28 feb in areas bound…
  20. NAVAREA XII 36/00 · Containers2000-02-02 → 2000-02-09
    20 containers adrift in 47-48N 176-15W

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