North Pacific Ocean

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

in force
25
last 12 months
296
since 1957
17,262
categories
22

In force now · 25

  1. JTWC-WP2426 · Storms2026-09-19
    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 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. HYDROPAC 2457/26 · Exercises2026-08-27
    Gunnery exercises occur daily from 2300Z to 0900Z, August 31 to September 29, in the North Pacific.
  5. NAVAREA XI 392/26 · Exercises2026-08-27
    Gunnery exercise daily 2300Z to 0900Z from Aug 31 to Sep 29 in North Pacific, Nanpo Shoto.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. HYDROPAC 1819/25 · Wrecks2025-07-17
    Depths between 5.4 and 18.8 meters reported at several positions in Marshall Islands, North Pacific.
  15. 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.
  16. 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.
  17. 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.
  18. 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.
  19. NAVAREA XII 208/25 · Nav aids2025-04-06
    Punta Soldado light at 03-48.50N 077-10.80W is discontinued.
  20. 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.
  21. NAVAREA XII 441/24 · Nav aids2024-06-18
    Morro Santo Domingo light at 28-14.37N 114-06.18W is unlit.
  22. 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.
  23. NAVAREA XII 721/22 · Nav aids2022-09-27
    In El Salvador, mooring buoys at 13-35.23N 089-51.10W are unlit.
  24. 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.
  25. 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

Exercises4,67227%
Incidents4,48526%
Quakes2,41614%
Missiles1,75610%
Spills7775%
Nav aids7654%
Towing5323%
Other5143%
Derelicts4773%
Cable ops2291%
Debris1641%
Surveys1481%
Ordnance1161%
Containers1131%
Wrecks370%
Storms350%
Volcanic130%
Restricted60%
Mines40%
Piracy10%
Structures10%
Icebergs10%

Archive · 17,237 cancelled

  1. NAVAREA XII 323/99 · Exercises1999-09-21 → 1999-09-27
    Hazardous operations 240300Z to 240900Z sep, alternate 0300Z to 0900Z daily 25 thru 27 sep in area bound by…
  2. HYDROPAC 976/99 · Incidents1999-09-21 → 1999-09-21
    Distress signal received on 406 mhz vicinity 27-05.2N 170-10.3E
  3. USGS-USP0009EPP · Quakes1999-09-20 → 1999-09-23
    Earthquake magnitude 5.5 (mwc) in 46.334N 153.463E, depth 33 km at 200932Z sep 99
  4. USGS-USP0009EMG · Quakes1999-09-19 → 1999-09-22
    Earthquake magnitude 5.8 (mwc) in 46.419N 153.377E, depth 46 km at 190027Z sep 99
  5. USGS-USP0009EMB · Quakes1999-09-18 → 1999-09-21
    80 km ese of ozernovskiy, russia
  6. NAVAREA XII 319/99 · Exercises1999-09-17 → 1999-09-24
    Hazardous operations 1500Z to 0100Z commencing daily 22 and 23 sep in areas bound by: a. 31-10N 117-35W,…
  7. NAVAREA XII 318/99 · Missiles1999-09-16 → 1999-09-23
    Intermittent missile firing operations take place 0001Z to 2359Z daily monday thru sunday in the naval air…
  8. HYDROPAC 955/99 · Incidents1999-09-16 → 1999-09-16
    Distress signal received on 406 mhz in 14-43.9N 147-43.9E at 160057Z sep
  9. USGS-USP0009EEQ · Quakes1999-09-14 → 1999-09-17
    52 km ese of saipan, northern mariana islands
  10. HYDROPAC 948/99 · Exercises1999-09-14 → 1999-09-19
    Hazardous operations 172000Z to 172300Z, 182000Z to 182300Z, 180200Z to 180600Z and 190200Z to 190600Z sep…
  11. HYDROPAC 947/99 · Exercises1999-09-14 → 1999-09-17
    Hazardous operations 162200Z to 170100Z and 170300Z to 170700Z sep in area bound by 51-13N 153-28E, 51-48N…
  12. HYDROPAC 940/99 · Incidents1999-09-13 → 1999-09-14
    Distress signal received on 406 mhz in 05-14.6N 132-29.2E at 132323Z sep
  13. HYDROPAC 930/99 · Incidents1999-09-12 → 1999-09-13
    Distress signal received on 121.5 mhz in 14-51.2N 145-40.3E at 120807Z sep
  14. USGS-USP0009EBN · Quakes1999-09-12 → 1999-09-15
    Earthquake magnitude 5.9 (mwb) in 28.970N 142.053E, depth 33 km at 120303Z sep 99
  15. USGS-USP0009E83 · Quakes1999-09-09 → 1999-09-12
    Earthquake magnitude 5.5 (mwc) in 47.506N 154.334E, depth 33 km at 091402Z sep 99
  16. NAVAREA XII 310/99 · Missiles1999-09-09 → 1999-09-16
    Intermittent missile firing operations take place 0001Z to 2359Z daily monday thru sunday in the naval air…
  17. HYDROPAC 909/99 · Incidents1999-09-09 → 1999-10-22
    Distress signal received on 406 mhz in 39-55N 164-27E at 090551Z sep
  18. HYDROPAC 905/99 · Incidents1999-09-08 → 1999-09-09
    Distress signal received on 121.5 mhz in 15-01.7N 145-44.1E at 081124Z sep
  19. HYDROPAC 900/99 · Incidents1999-09-08 → 1999-09-08
    Distress signal received on 121.5 mhz in 16-31.3N 146-15.3E at 081124Z sep
  20. HYDROPAC 899/99 · Incidents1999-09-08 → 1999-09-08
    Distress signal received on 121.5 mhz in 15-21.3N 145-54.8E at 081118Z sep

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