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% |
| Spills | 1 | 0% |
| Debris | 1 | 0% |
Archive · 259 cancelled
- USGS-USP000CJ89 · Quakes2004-01-19 → 2004-01-22Earthquake magnitude 5.6 (mwb) in 84.475N 105.215E, depth 10 km at 190722Z jan 04
- HYDROARC 3/04 · Surveys2004-01-08 → 2011-05-21Scientific moorings established: a. BC1 in 71-03.12N 159-32.54W
- USGS-USP000BBYP · Quakes2002-09-11 → 2002-09-14Earthquake magnitude 5.5 (mwc) in 83.136N 006.078W, depth 10 km at 110450Z sep 02
- HYDROPAC 1104/02 · Exercises2002-06-15 → 2002-06-21Hazardous operations 190920Z to 191020Z jun, alternate 0920Z to 1020Z daily 20 and 21 jun within 31 miles of…
- USGS-USP000B3N5 · Quakes2002-05-03 → 2002-05-06Earthquake magnitude 5.6 (mwc) in 86.005N 031.595E, depth 10 km at 031120Z may 02
- HYDROPAC 468/02 · Exercises2002-03-15 → 2002-03-19Hazardous operations 180910Z to 181210Z mar, alternate 190910Z to 191210Z mar within 27 miles of 83-08-26N…
- NAVAREA XII 75/02 · Exercises2002-03-15 → 2002-03-19Hazardous operations 180910Z to 181210Z mar, alternate 190910Z to 191210Z mar within 27 miles of 83-08-26N…
- HYDROLANT 453/02 · Exercises2002-02-25 → 2002-03-01Hazardous operations 2000Z to 0408Z commencing daily 28 feb thru 01 apr in areas: a. within 12 miles of…
- NAVAREA IV 70/02 · Exercises2002-02-25 → 2002-03-01Hazardous operations 2000Z to 0408Z commencing daily 28 feb thru 01 apr in areas: a. within 12 miles of…
- HYDROLANT 434/02 · Exercises2002-02-23 → 2002-02-25Hazardous operations 2000Z to 0408Z commencing daily 28 feb thru 01 apr in areas: a. within 12 miles of…
- NAVAREA IV 66/02 · Exercises2002-02-23 → 2002-02-25Hazardous operations 2000Z to 0408Z commencing daily 28 feb thru 01 apr in areas: a. within 12 miles of…
- USGS-USP0009894 · Quakes1999-05-18 → 1999-05-21Earthquake magnitude 5.5 (mwc) in 85.632N 086.146E, depth 10 km at 182020Z may 99
- USGS-USP00095CU · Quakes1999-03-28 → 1999-03-31Earthquake magnitude 5.8 (mwc) in 85.644N 086.259E, depth 10 km at 282133Z mar 99
- USGS-USP00093TV · Quakes1999-03-04 → 1999-03-07Earthquake magnitude 5.5 (mwc) in 85.735N 084.906E, depth 10 km at 040752Z mar 99
- USGS-USP00093PF · Quakes1999-03-01 → 1999-03-04Earthquake magnitude 5.5 (mwc) in 85.686N 086.034E, depth 10 km at 011746Z mar 99
- USGS-USP000922W · Quakes1999-02-01 → 1999-02-04Earthquake magnitude 5.7 (mwc) in 85.571N 087.141E, depth 10 km at 011156Z feb 99
- USGS-USP000922K · Quakes1999-02-01 → 1999-02-04Earthquake magnitude 5.6 (mwc) in 85.734N 084.439E, depth 10 km at 010956Z feb 99
- USGS-USP00080U5 · Quakes1997-04-19 → 1997-04-22Earthquake magnitude 5.5 (mwb) in 78.445N 125.821E, depth 10 km at 191526Z apr 97
- NOAAORR-6837 · Spills1991-09-16 → 1991-09-30Soviet ice station NP-31; beaufort sea, alaska
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.