Navigational warnings on 2026-08-20
UTC day · today
- issued
- 34
- cancelled
- 29
- in force at end
- 518
- of these still in force
- 1
Issued · by type
| Missiles | 9 |
| Exercises | 8 |
| Surveys | 3 |
| Icebergs | 3 |
| Cable ops | 2 |
| Storms | 2 |
| Quakes | 2 |
| Debris | 2 |
| Containers | 1 |
| Nav aids | 1 |
| Piracy | 1 |
Issued · by sea
| North Pacific Ocean | 5 |
| South Atlantic Ocean | 5 |
| Philippine Sea | 3 |
| Flores Sea | 2 |
| Arabian Sea | 2 |
| Japan Sea | 2 |
| Barentsz Sea | 1 |
| Baltic Sea | 1 |
HYDROPAC 9 · HYDROLANT 7 · NAVAREA XII 6 · NAVAREA XI 5 · NAVAREA IV 2 · USGS earthquakes 2 · NAVAREA X 1 · HYDROARC 1 · AUSCOAST 1
Issued · 34
- Missiles · NAVAREA XI 374/2600:00ZA missile firing warning for the North Pacific near Hokkaido is canceled, including warning 0369/26.North Pacific, Hokkaido
- Surveys · HYDROLANT 1621/2600:06ZVessel NOMAR is conducting underwater operations daily until 25 August at 24-07.27S 046-09.30W off Brazil in the South Atlantic. Wide berth requested.South Atlantic · Brazil
- Missiles · HYDROARC 178/2600:38ZRocket launching hazardous operations occur in Barents Sea near Russia on July 21-30, with daily time windows, in two areas.Barents Sea · Russia
- Quakes · USGS-US6000TM1J02:46Z32 km nne of ruteng, indonesia
- Icebergs · HYDROLANT 1623/2604:10ZIcebergs reported in Scotia Sea, South Atlantic, South Pacific, Antarctica at positions A84, A85, D33A, D33C. Cancel message 210411Z Aug 26.Scotia Sea · South Atlantic · South Pacific · Antarctica
- Missiles · NAVAREA XII 563/2605:37ZHazardous rocket launching operations are scheduled off California on August 25-31 with multiple time windows and three designated areas.North Pacific · California
- Debris · NAVAREA XII 564/2605:49ZA fish aggregating device is adrift near 04-21.66N 081-47.40W as of 191700Z August.North Pacific
- Missiles · NAVAREA XI 375/2608:00ZA potential ballistic missile launched from North Korea may fall in the Japan Sea, East China Sea, and North Pacific; vessels should keep clear and report to Japan Coast Guard.Japan Sea, East China Sea and North Pacific, Japan
- Missiles · NAVAREA XI 376/2608:00ZA missile from North Korea may have landed in Japan Sea, East China Sea, North Pacific; vessels keep clear and report to Japan Coast Guard.Japan Sea, East China Sea and North Pacific, Japan
- Exercises · HYDROPAC 2390/2608:46ZHazardous operations occur daily 0100Z to 1300Z from 24 to 27 August within three miles of two positions near Guam.North Pacific · Philippine Sea · Guam
- Exercises · HYDROPAC 2391/2609:09ZGunnery exercises in Coral Sea near New Caledonia from August 24 20:00 UTC to August 28 08:00 UTC.Coral Sea · New Caledonia
- Surveys · HYDROLANT 1625/2609:36ZUnderwater operations daily from 21 August to 4 September by two vessels at 20-23.95S 040-10.83W in the South Atlantic, wide berth requested.South Atlantic · Brazil
- Exercises · HYDROLANT 1626/2609:42ZHazardous operations are underway from August 25 0900Z to August 27 2100Z within seven miles of 24 degrees 26.04 minutes South, 045 degrees 39.91 minutes West.South Atlantic · Brazil
- Missiles · NAVAREA X 96/2610:11ZSpace debris danger area 100 nautical miles either side of a line in the Southern Ocean from Cape Darnley to Tasmania, daily 25-31 August 2026 0809-1608 UTC.
- Missiles · HYDROPAC 2392/2610:38ZSpace debris hazard operations occur daily from Aug 25 to 31, 1002Z to 1607Z, in the South Pacific.South Pacific
- Nav aids · HYDROLANT 1627/2610:52ZJericoacoara light at 02-47.28S 040-29.98W is unlit.South Atlantic · Brazil
- Exercises · HYDROPAC 2393/2611:25ZExercise warning in Lakshadweep, Eastern Indian Ocean, is cancelled as of 210830Z August 26.Eastern Indian Ocean · Lakshadweep
- Piracy · HYDROPAC 2394/2611:37ZA vessel is hijacked by six pirates in the Arabian Sea off Yemen at 14-32N 051-28E; vessels keep clear and exercise caution.Arabian Sea · Yemen
- Exercises · HYDROLANT 1643/2611:53ZIn Baltic Sea, Lithuania: hazardous operations daily 0900-1500 UTC August 27 and 28 near 55-29.60N 020-51.00E; wide berth requested. Message cancels August 26 at 1600 UTC.Baltic Sea · Lithuania
- Missiles · NAVAREA XI 377/2612:00ZMissile firing is scheduled daily in Japan Sea from August 25-30, 1400Z to 0800Z, in a defined area bounded by coordinates and shore.Japan Sea
- Missiles · HYDROPAC 2395/2612:10ZMissile operations occur daily from 1400Z to 0800Z, 25 through 30 August, in the Sea of Japan.Sea of Japan · Russia
- Exercises · NAVAREA XII 566/2613:02ZHazardous operations are scheduled from 25 August 14:00 to 20:00 UTC, with alternate 26 August 14:00 to 20:00 UTC, within 56 miles of 35-35N 121-56W.North Pacific · California
- Exercises · NAVAREA XII 567/2613:21ZHazardous operations are scheduled off California on August 25 from 1300 to 2100 UTC, with alternate on August 26, in a bounded area.North Pacific · California
- Surveys · AUSCOAST 280/26in force13:27ZDrill rig Valaris 107 is at position 38 degrees 17.79 minutes south, 147 degrees 40.57 minutes east, requesting 2.5 nautical miles clearance.
- Icebergs · HYDROLANT 1629/2613:49ZIcebergs are reported at multiple positions in the Scotia Sea, South Atlantic, Antarctica; this message cancels on 21 August.Scotia Sea · South Atlantic · Antarctica
- Debris · HYDROPAC 2398/2614:15ZA warning about wooden debris adrift at 25-13.12N 056-29.18E in the Gulf of Oman off the United Arab Emirates is cancelled on 23 August.Gulf of Oman · U.A.E
- Cable ops · NAVAREA IV 807/2615:21ZFrom August 25 to September 8, the cableship Wave Sentinel is conducting cable operations near 29-12.78N 087-58.33W in the Gulf of America, requesting wide berth.Gulf of America · Alabama
- Storms · HYDROPAC 2400/2616:34ZDue to Tropical Storm Saudel, the ports of Saipan and Tinian are closed.
- Containers · HYDROPAC 2401/2616:58ZA partially submerged container is adrift at 18-55.16N 071-55.61E in the Arabian Sea near India, as of 20 Aug 04:00 UTC.Arabian Sea · India
- Cable ops · NAVAREA XII 568/2617:25ZCable ship IT Intrepid conducts cable operations in Chukchi Sea, Alaska, from August 22 to September 2, requesting one mile berth.Chukchi Sea · Alaska
- Storms · NAVAREA XI 378/2618:00ZDue to a tropical storm, the ports of Saipan and Tinian in the Marianas are closed until further notice.North Pacific, Marianas
- Quakes · USGS-US6000TM8H18:12Z68 km nnw of ende, indonesia
- Exercises · NAVAREA XII 569/2618:27ZHazardous operations will occur off California from August 25 to August 28, with alternate times on August 26 and 27.North Pacific · California
- Icebergs · NAVAREA IV 809/2619:06ZAs of August 21, North American Ice Service reports iceberg and sea ice limits along tracklines, requests ice reports, cancels August 22.
Cancelled · 29
- Spills · NOAAORR-1119500:00ZJoseph sinking; seattle, washingtonFishing Vessel New St
- Missiles · NAVAREA XI 369/2600:21ZMissile firing in North Pacific near Hokkaido, daily from August 16 to 22, from 1400Z to 1000Z, in a defined area.North Pacific, Hokkaido
- Quakes · USGS-USD0015EAY00:46Z73 km nnw of ende, indonesia
- Missiles · NAVAREA XI 374/2612:21ZA missile firing warning for the North Pacific near Hokkaido is canceled, including warning 0369/26.North Pacific, Hokkaido
- Quakes · USGS-USD0015EDQ12:38Z72 km e of petropavlovsk-kamchatsky, russia
- Surveys · HYDROLANT 1620/2614:45ZSurvey operations in the South Atlantic by vessel Sea 1 Dorado until 24 August, wide berth requested.South Atlantic
- Surveys · HYDROLANT 1621/2614:45ZVessel NOMAR is conducting underwater operations daily until 25 August at 24-07.27S 046-09.30W off Brazil in the South Atlantic. Wide berth requested.South Atlantic · Brazil
- Missiles · HYDROARC 178/2614:45ZRocket launching hazardous operations occur in Barents Sea near Russia on July 21-30, with daily time windows, in two areas.Barents Sea · Russia
- Icebergs · HYDROLANT 1623/2614:45ZIcebergs reported in Scotia Sea, South Atlantic, South Pacific, Antarctica at positions A84, A85, D33A, D33C. Cancel message 210411Z Aug 26.Scotia Sea · South Atlantic · South Pacific · Antarctica
- Missiles · NAVAREA XII 563/2614:45ZHazardous rocket launching operations are scheduled off California on August 25-31 with multiple time windows and three designated areas.North Pacific · California
- Debris · NAVAREA XII 564/2614:45ZA fish aggregating device is adrift near 04-21.66N 081-47.40W as of 191700Z August.North Pacific
- Exercises · HYDROPAC 2390/2614:45ZHazardous operations occur daily 0100Z to 1300Z from 24 to 27 August within three miles of two positions near Guam.North Pacific · Philippine Sea · Guam
- Exercises · HYDROPAC 2391/2614:45ZGunnery exercises in Coral Sea near New Caledonia from August 24 20:00 UTC to August 28 08:00 UTC.Coral Sea · New Caledonia
- Surveys · HYDROLANT 1625/2614:45ZUnderwater operations daily from 21 August to 4 September by two vessels at 20-23.95S 040-10.83W in the South Atlantic, wide berth requested.South Atlantic · Brazil
- Exercises · HYDROLANT 1626/2614:45ZHazardous operations are underway from August 25 0900Z to August 27 2100Z within seven miles of 24 degrees 26.04 minutes South, 045 degrees 39.91 minutes West.South Atlantic · Brazil
- Missiles · HYDROPAC 2392/2614:45ZSpace debris hazard operations occur daily from Aug 25 to 31, 1002Z to 1607Z, in the South Pacific.South Pacific
- Nav aids · HYDROLANT 1627/2614:45ZJericoacoara light at 02-47.28S 040-29.98W is unlit.South Atlantic · Brazil
- Exercises · HYDROPAC 2393/2614:45ZExercise warning in Lakshadweep, Eastern Indian Ocean, is cancelled as of 210830Z August 26.Eastern Indian Ocean · Lakshadweep
- Piracy · HYDROPAC 2394/2614:45ZA vessel is hijacked by six pirates in the Arabian Sea off Yemen at 14-32N 051-28E; vessels keep clear and exercise caution.Arabian Sea · Yemen
- Missiles · HYDROPAC 2395/2614:45ZMissile operations occur daily from 1400Z to 0800Z, 25 through 30 August, in the Sea of Japan.Sea of Japan · Russia
- Exercises · NAVAREA XII 566/2614:45ZHazardous operations are scheduled from 25 August 14:00 to 20:00 UTC, with alternate 26 August 14:00 to 20:00 UTC, within 56 miles of 35-35N 121-56W.North Pacific · California
- Exercises · NAVAREA XII 567/2614:45ZHazardous operations are scheduled off California on August 25 from 1300 to 2100 UTC, with alternate on August 26, in a bounded area.North Pacific · California
- Icebergs · HYDROLANT 1629/2614:45ZIcebergs are reported at multiple positions in the Scotia Sea, South Atlantic, Antarctica; this message cancels on 21 August.Scotia Sea · South Atlantic · Antarctica
- Debris · HYDROPAC 2398/2614:45ZA warning about wooden debris adrift at 25-13.12N 056-29.18E in the Gulf of Oman off the United Arab Emirates is cancelled on 23 August.Gulf of Oman · U.A.E
- Missiles · HYDROPAC 2388/2614:45ZHazardous space debris operations are occurring in the Eastern Indian Ocean, South Pacific, and Tasman Sea from Aug 25 to Aug 31.Eastern Indian Ocean · South Pacific · Tasman Sea
- Missiles · NAVAREA IV 806/2614:45ZHazardous rocket launching operations are scheduled from August 25 to 31 in areas off Florida, with alternate windows.North Atlantic · Florida
- Icebergs · NAVAREA IV 804/2614:45ZNorth American Ice Service bulletin lists iceberg and sea ice limits along tracklines in the North Atlantic, valid until August 21, 2026.
- Surveys · HYDROLANT 1619/2614:45ZUnderwater operations are underway until 280259Z August by vessel Siem Pilot at 24-35.02S 042-15.37W; wide berth requested.South Atlantic
- Missiles · NAVAREA X 91/2623:53ZSpace debris danger area from Cape Darnley to Tasmania, 80 nautical miles either side of centreline, daily between 1455 and 2205 UTC, 10 to 16 August 2026.
Not for navigation. Counts include only warnings we display; ongoing search-and-rescue traffic is excluded until 30 days after it closes.