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 151/21 · Icebergs2021-07-26 → 2021-07-29Iceberg reported in vicinity 71-26N 156-20W at 252000Z jul
- HYDROARC 109/21 · Missiles2021-06-18 → 2021-06-24Hazardous operations, rocket launching 1600Z to 1800Z daily 23 and 24 jun in area bound by 83-00N 099-00E,…
- HYDROARC 82/21 · Missiles2021-05-24 → 2021-05-29Hazardous operations, rocket launching 291600Z to 291800Z may in area bound by 83-00N 099-00E, 83-00N…
- HYDROARC 63/21 · Missiles2021-04-23 → 2021-04-29Hazardous operations, rocket launching 0158Z to 0315Z daily 28 apr thru 28 may in area bound by 79-40N…
- HYDROARC 37/21 · Missiles2021-03-18 → 2021-03-23Hazardous operations, space debris 0600Z to 0730Z daily 20 thru 23 mar in area within 130 miles of 82-10N…
- HYDROARC 298/20 · Missiles2020-12-11 → 2020-12-16Hazardous operations, rocket launching 160100Z to 160600Z dec in area bound by 83-00N 099-00E, 83-00N…
- HYDROARC 287/20 · Missiles2020-11-29 → 2020-12-15Missile operations 302100Z nov to 152100Z dec in area bound by 81-21.6N 089-42.0E, 81-50.4N 087-39.6E,…
- HYDROARC 249/20 · Surveys2020-10-21 → 2022-01-17Scientific moorings established: a. BCE-19, in 71-40.37N 154-59.92W, at depth 105 meters, top float 40 meters
- HYDROARC 245/20 · Surveys2020-10-19 → 2022-03-18Scientific moorings established: a. 75-10.91N 157-07.14W
- HYDROARC 178/20 · Surveys2020-09-07 → 2020-10-01Survey operations in progress until 30 sep by M/V professor logachev towing 1500 meter long cable along…
- HYDROARC 161/20 · Missiles2020-08-28 → 2020-09-07Hazardous operations, rocket launching 0200Z to 0317Z daily 02 sep thru 02 oct in area bound by 80-10N…
- HYDROARC 125/20 · Surveys2020-07-23 → 2020-09-10Survey operations 27 jul thru 31 oct by M/V academic lazarev towing 8500 meter cable in area bound by…
- HYDROARC 86/20 · Missiles2020-06-14 → 2020-07-03Hazardous operations, space debris 190200Z jun to 190317Z jul in area bound by 80-10N 167-12E, 82-55N…
- HYDROARC 51/20 · Missiles2020-04-10 → 2020-04-15Hazardous operations, rocket launching, 151500Z to 152100Z apr in area bound by 83-00N 099-00E, 83-00N…
- HYDROARC 39/20 · Missiles2020-03-20 → 2020-04-23Hazardous operations, rocket launching 0200Z to 0317Z daily 24 mar thru 23 apr in area bound by 80-10N…
- HYDROARC 38/20 · Missiles2020-03-18 → 2020-03-24Hazardous operations, space debris: 1700Z to 1830Z daily 21 thru 24 mar in area bound by 85-19N 162-06W,…
- HYDROARC 37/20 · Missiles2020-03-16 → 2020-03-18Hazardous operations, space debris: 1700Z to 1830Z daily 21 thru 24 mar in area bound by 82-25N 141-00W,…
- USGS-US70007S90 · Quakes2020-02-18 → 2020-02-21Earthquake magnitude 5.5 (mww) in 85.729N 022.694E, depth 10 km at 180729Z feb 20
- HYDROARC 17/20 · Missiles2020-02-01 → 2020-02-10Hazardous operations, rocket launching 062142Z to 100400Z feb in area bound by 85-19N 162-06W, 85-50N…
- HYDROARC 321/19 · Missiles2019-12-21 → 2019-12-29Hazardous operations, space debris 2230Z to 2359Z daily 26 thru 28 dec in area bounded by: 078-39.67N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.