North Pacific Ocean

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

in force
38
last 12 months
279
since 1957
17,223
categories
22

In force now · 38

  1. NHC-EP122026 · Storms2026-09-09
    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 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. 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.
  5. 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.
  6. 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.
  7. 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.
  8. HYDROPAC 2534/26 · Exercises2026-09-03
    Hazardous operations are occurring near Guam in the North Pacific from 0430 to 0830 UTC on September 9.
  9. 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.
  10. 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.
  11. 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.
  12. HYDROPAC 2457/26 · Exercises2026-08-27
    Gunnery exercises occur daily from 2300Z to 0900Z, August 31 to September 29, in the North Pacific.
  13. NAVAREA XI 392/26 · Exercises2026-08-27
    Gunnery exercise daily 2300Z to 0900Z from Aug 31 to Sep 29 in North Pacific, Nanpo Shoto.
  14. 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.
  15. 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.
  16. 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.
  17. NAVAREA XII 580/26 · Cable ops2026-08-24
    Cable operations are underway by cable ship Ile de Sein along a trackline off California in the North Pacific until further notice; wide berth requested.
  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. 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.
  29. 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.
  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

Exercises4,65927%
Incidents4,47426%
Quakes2,41614%
Missiles1,75210%
Spills7775%
Nav aids7634%
Towing5323%
Other5133%
Derelicts4773%
Cable ops2271%
Debris1641%
Surveys1481%
Ordnance1161%
Containers1131%
Wrecks370%
Storms290%
Volcanic130%
Restricted60%
Mines40%
Piracy10%
Icebergs10%
Structures10%

Archive · 17,185 cancelled

  1. USGS-USP000J11C · Quakes2011-05-05 → 2011-05-08
    224 km se of kamaishi, japan
  2. USGS-USP000J11A · Quakes2011-05-05 → 2011-05-08
    2 km se of cuanacaxtitlán, mexico
  3. NAVAREA XII 181/11 · Exercises2011-05-03 → 2011-05-05
    Hazardous operations
  4. NAVAREA XII 179/11 · Derelicts2011-05-02 → 2011-05-04
    Derelict 14 foot vessel, black hull, adrift vicinity 28-25N 178-20W
  5. HYDROPAC 1343/11 · Exercises2011-05-02 → 2011-05-04
    Hazardous operations
  6. HYDROPAC 1342/11 · Exercises2011-05-02 → 2011-05-02
    Hazardous operations
  7. HYDROPAC 1338/11 · Incidents2011-05-01 → 2011-05-07
    Distress signal received on 406 mhz from aircraft in 02-39.7N 109-52.0W
  8. NAVAREA XII 178/11 · Nav aids2011-05-01 → 2011-05-05
    Nga chart 18000 (8TH ed)
  9. NAVAREA XII 177/11 · Missiles2011-05-01 → 2011-05-29
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  10. USGS-USP000J0TF · Quakes2011-04-30 → 2011-05-03
    143 km sse of punta de burica, panama
  11. HYDROPAC 1317/11 · Incidents2011-04-30 → 2011-04-30
    Distress signal received on 406 mhz in 21-05.7N 167-02.5W at 292335Z apr
  12. NAVAREA XII 174/11 · Missiles2011-04-29 → 2011-05-04
    Hazardous operations 032000Z to 040130Z and 041400Z to 042100Z may in area bound by 34-00N 119-20W, 33-39N…
  13. USGS-USP000J0QK · Quakes2011-04-28 → 2011-05-01
    Earthquake magnitude 5.8 (mww) in 10.129N 103.614W, depth 10 km at 281307Z apr 11
  14. USGS-USP000J0QD · Quakes2011-04-28 → 2011-05-01
    Earthquake magnitude 5.5 (mww) in 37.455N 141.653E, depth 38 km at 280927Z apr 11
  15. HYDROPAC 1292/11 · Containers2011-04-28 → 2011-05-01
    Container adrift in 35-54N 162-40E at 272000Z apr
  16. NAVAREA XII 171/11 · Missiles2011-04-27 → 2011-05-03
    Hazardous operations 2200Z to 0800Z commencing daily 07 and 08 may in area bound by 33-58N 119-43W, 33-39N…
  17. NAVAREA XII 169/11 · Missiles2011-04-27 → 2011-04-27
    Hazardous operations 2200Z to 0800Z commencing daily 29 apr thru 02 may and 07 thru 09 may in area bound by…
  18. HYDROPAC 1287/11 · Exercises2011-04-27 → 2011-04-28
    Hazardous operations
  19. NAVAREA XII 168/11 · Ordnance2011-04-27 → 2011-04-30
    Underwater ordnance detonations 282100Z to 300200Z apr within 30 miles of trackline joining 38-00N 125-00W,…
  20. NAVAREA XII 167/11 · Ordnance2011-04-27 → 2011-04-30
    Underwater ordnance detonations 282100Z to 300200Z apr within 50 miles of trackline between 40-00-00N…

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