North Pacific Ocean

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

in force
37
last 12 months
290
since 1957
17,235
categories
22

In force now · 37

  1. NHC-EP122026 · Storms2026-09-11
    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 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. HYDROPAC 2534/26 · Exercises2026-09-03
    Hazardous operations are occurring near Guam in the North Pacific from 0430 to 0830 UTC on September 9.
  10. 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.
  11. 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.
  12. 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.
  13. HYDROPAC 2457/26 · Exercises2026-08-27
    Gunnery exercises occur daily from 2300Z to 0900Z, August 31 to September 29, in the North Pacific.
  14. NAVAREA XI 392/26 · Exercises2026-08-27
    Gunnery exercise daily 2300Z to 0900Z from Aug 31 to Sep 29 in North Pacific, Nanpo Shoto.
  15. 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.
  16. 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.
  17. 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.
  18. 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.
  19. 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.
  20. 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.
  21. 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.
  22. 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.
  23. 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.
  24. 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.
  25. 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.
  26. HYDROPAC 1819/25 · Wrecks2025-07-17
    Depths between 5.4 and 18.8 meters reported at several positions in Marshall Islands, North Pacific.
  27. 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.
  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. 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.
  30. 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.
  31. NAVAREA XII 208/25 · Nav aids2025-04-06
    Punta Soldado light at 03-48.50N 077-10.80W is discontinued.
  32. 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.
  33. NAVAREA XII 441/24 · Nav aids2024-06-18
    Morro Santo Domingo light at 28-14.37N 114-06.18W is unlit.
  34. 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.
  35. NAVAREA XII 721/22 · Nav aids2022-09-27
    In El Salvador, mooring buoys at 13-35.23N 089-51.10W are unlit.
  36. 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.
  37. 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

Exercises4,66527%
Incidents4,47426%
Quakes2,41614%
Missiles1,75210%
Spills7775%
Nav aids7654%
Towing5323%
Other5133%
Derelicts4773%
Cable ops2291%
Debris1641%
Surveys1481%
Ordnance1161%
Containers1131%
Wrecks370%
Storms310%
Volcanic130%
Restricted60%
Mines40%
Piracy10%
Icebergs10%
Structures10%

Archive · 17,198 cancelled

  1. NAVAREA XII 544/08 · Debris2008-12-27 → 2009-01-03
    Noaa buoy 46084 adrift vicinity 56-45.2N 136-14.7W at 260642Z dec
  2. NAVAREA XII 543/08 · Debris2008-12-26 → 2008-12-27
    Noaa buoy 46084 adrift vicinity 56-37.30N 136-08.54W
  3. USGS-USP000GREB · Quakes2008-12-25 → 2008-12-28
    191 km wsw of vernon, canada
  4. HYDROPAC 2554/08 · Exercises2008-12-25 → 2008-12-28
    Hazardous operations 2000Z to 1330Z commencing daily 28 thru 30 dec within ten miles of 16-01N 146-04E
  5. HYDROPAC 2545/08 · Exercises2008-12-23 → 2008-12-25
    Hazardous operations 2000Z to 1330Z commencing daily 28 thru 31 dec within ten miles of 16-01N 146-04E
  6. NAVAREA XII 537/08 · Missiles2008-12-21 → 2008-12-28
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  7. USGS-USP000GR3J · Quakes2008-12-21 → 2008-12-24
    139 km ese of iwaki, japan
  8. HYDROPAC 2532/08 · Incidents2008-12-21 → 2009-01-01
    Man overboard from M/V ogasawara maru along trackline between 32-24.6N 140-30.3E at 201100Z dec and…
  9. USGS-USP000GR0A · Quakes2008-12-20 → 2008-12-23
    148 km ese of iwaki, japan
  10. NAVAREA XII 534/08 · Nav aids2008-12-17 → 2009-01-09
    Nga chart 18766 (7TH ed)
  11. HYDROPAC 2514/08 · Incidents2008-12-17 → 2009-01-01
    Distress signal received on 406 mhz in 34-14.0N 167-26.6W at 170801Z dec
  12. HYDROPAC 2493/08 · Incidents2008-12-15 → 2009-01-17
    Distress signal received on 121.5 mhz in 46-36-34N 155-30-49E at 151137Z dec
  13. NAVAREA XII 531/08 · Missiles2008-12-14 → 2008-12-21
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  14. HYDROPAC 2481/08 · Incidents2008-12-13 → 2009-01-17
    Distress signal received on 243 mhz in 33-36.17N 149-21.44E at 131220Z dec
  15. HYDROPAC 2474/08 · Exercises2008-12-13 → 2008-12-19
    Hazardous operations 0001Z to 1000Z daily 15 thru 19 dec within ten miles of 16-01N 146-04E
  16. HYDROPAC 2472/08 · Incidents2008-12-13 → 2009-01-10
    Distress signal received on 406 mhz in 09-20.9N 138-57.4E at 130116Z dec
  17. HYDROPAC 2450/08 · Incidents2008-12-11 → 2008-12-12
    Distress signal received on 243 mhz in 09-45.7N 141-20.5E at 110419Z dec
  18. NOAAORR-7939 · Spills2008-12-08 → 2008-12-22
    Santa barbara channel, ca
  19. NAVAREA XII 523/08 · Missiles2008-12-07 → 2008-12-14
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  20. HYDROPAC 2414/08 · Exercises2008-12-07 → 2008-12-13
    Hazardous operations 1330Z to 1500Z daily 10 thru 13 dec within 216 miles of 31-55N 153-45E

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