Arctic Ocean
IHO sea area 17 · -180° to 180° E, 71° to 90° N
- in force
- 1
- last 12 months
- 1
- archive messages
- 260
- categories
- 13
What the archive shows
260 messages are recorded since 1991-09-16 for the Arctic Ocean. The selection uses the IHO sea area; a message may describe an exercise, equipment outage or continuing operation as well as a hazard report.
Missiles accounts for 101 of 260 recorded messages (39%), the largest category group in this selection.
The NGA historical archive froze in 2024-05; live collection began 2026-08-17. Counts around that gap are incomplete, and changes in reporting volume do not establish changes in incident frequency.
- An older warning still listed in force · issued 2024-12-17 08:58ZFour scientific moorings established in Beaufort and Chukchi Seas off Alaska at various positions and depths.
In force now · 1
Longest in force
By year
91
97
99
02
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 · available archive
| Missiles | 101 | 39% |
| Surveys | 81 | 31% |
| Quakes | 27 | 10% |
| Exercises | 18 | 7% |
| Cable ops | 13 | 5% |
| Other | 6 | 2% |
| Icebergs | 3 | 1% |
| Nav aids | 3 | 1% |
| Restricted | 2 | 1% |
| Wrecks | 2 | 1% |
| Towing | 2 | 1% |
| Debris | 1 | 0% |
| Spills | 1 | 0% |
Archive · 259 cancelled
- HYDROARC 201/26 · Missiles2026-09-01 → 2026-09-02Space debris hazard operations daily 01:28 to 02:44 UTC from September 15 to October 15 in Arctic area bounded by 81-42N 134-18W and 77-06N 161-35W.
- USGS-US7000QCTD · Quakes2025-07-15 → 2025-07-18Earthquake magnitude 5.8 (mww) in 83.270N 033.136W, depth 8 km at 151715Z jul 25
- USGS-US6000MZKF · Quakes2024-05-19 → 2024-05-22Earthquake magnitude 5.5 (mww) in 85.239N 012.015E, depth 10 km at 190231Z may 24
- HYDROARC 23/24 · Surveys2024-02-24 → 2026-08-14Scientific mooring with top float at 42 meters established at 75-06.02N 168-00.04W in Chukchi Sea.
- HYDROARC 270/23 · Surveys2023-10-25 → 2026-08-14Scientific moorings established at three locations in Beaufort Sea, Alaska; top floats at 15, 20, and 19 meters.
- HYDROARC 269/23 · Surveys2023-10-25 → 2026-08-14A scientific mooring with its top float at 35 meters is established in the Chukchi Sea at 74-31.38N 161-56.54W.
- HYDROARC 263/23 · Missiles2023-10-19 → 2023-10-27Missile and gunnery operations 0500Z to 1700Z daily 24 and 25 oct, alternate 0500Z to 1700Z daily 26 and 27…
- HYDROARC 254/23 · Nav aids2023-10-13 → 2026-08-14Three autonomous buoy stations established in East Siberian Sea at 74-53.21N 175-33.07E, 74-35.06N 173-31.44E, and 73-16.56N 173-52.60E; one mile berth requested.
- HYDROARC 236/23 · Missiles2023-09-30 → 2023-11-04Hazardous operations, space debris 0144Z to 0300Z daily 05 oct thru 04 nov in area bound by 81-32.00N…
- HYDROARC 233/23 · Surveys2023-09-29 → 2023-10-11Underwater operations 30 sep thru 10 oct by M/V akademik nemchinov and M/V akademik primakov in area bound…
- HYDROARC 177/23 · Surveys2023-08-21 → 2023-10-18Survey operations 28 aug until further notice by M/V geolog dmitriy nalivkin towing 8500 meter long cable in…
- HYDROARC 176/23 · Surveys2023-08-21 → 2023-11-02Survey operations 29 aug thru 01 nov by M/V akademik nemchinov and M/V akademik primakov towing 6500 meters…
- HYDROARC 168/23 · Missiles2023-08-17 → 2023-08-24Hazardous operations, rocket launching 220500Z to 221700Z aug, alternate 0500Z to 1700Z daily 23 and 24 aug…
- HYDROARC 84/23 · Missiles2023-05-13 → 2023-05-26Hazardous operations, rocket launching 0500Z to 1100Z daily 19 thru 26 may in area bound by 81-28.16N…
- HYDROARC 58/23 · Missiles2023-04-21 → 2023-04-29Hazardous operations, rocket launching 0500Z to 1500Z daily 25 thru 29 apr in area bound by 81-28.16N…
- HYDROARC 376/22 · Missiles2022-12-20 → 2022-12-22Hazardous operations, space debris 0155Z to 0312Z daily 21 dec thru 20 jan 23 in area bound by 79-42.00N…
- HYDROARC 370/22 · Missiles2022-11-28 → 2022-11-28Hazardous operations, space debris 0155Z to 0312Z daily 29 nov thru 25 dec in area bound by 79-42.00N…
- HYDROARC 367/22 · Missiles2022-11-20 → 2022-12-20Hazardous operations, space debris 0155Z to 0312Z daily 25 nov thru 25 dec in area bound by 79-42.00N…
- HYDROARC 366/22 · Missiles2022-11-19 → 2022-11-20Hazardous operations, rocket launching 0155Z to 0312Z daily 25 nov thru 25 dec in area bound by 79-42.00N…
- HYDROARC 328/22 · Missiles2022-10-21 → 2022-10-29Hazardous operations, rocket launching 0500Z to 1700Z daily 26 thru 29 oct in area bound by 81-21.60N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.