Navigational warnings on 2026-04-23
UTC day · today
- issued
- 4
- cancelled
- 2
- in force at end
- 681
- of these still in force
- 3
Coverage note: the NGA archive ends 2024-05 and live collection began 2026-08-17. Warnings issued in between are here only if they were still in force when collection started, so this period is under-counted.
Issued · by sea
| South Atlantic Ocean | 2 |
| Philippine Sea | 1 |
| Sea of Okhotsk | 1 |
HYDROLANT 2 · HYDROPAC 1 · NOAA IncidentNews 1
Issued · 4
- Spills · NOAAORR-1114900:00ZTyphoon sinlaku; guam and the commonwealth of the northern mariana islands
- Nav aids · HYDROLANT 809/26in force01:21ZAn ODAS buoy is temporarily established in the South Atlantic off Brazil at 32-32.46S 052-06.03W until 31 Dec 2027; HYDROLANT 1946/25 canceled.South Atlantic · Brazil
- Nav aids · HYDROLANT 810/26in force01:29ZA yellow data buoy is established in the South Atlantic off Brazil at 17-58.12S 038-41.48W until October 19; message cancels October 26.South Atlantic · Brazil
- Surveys · HYDROPAC 1291/26in force12:31ZUnderwater operations in the Sea of Okhotsk, Russia, run from 1 May to 31 October; wide berth requested.Sea of Okhotsk · Russia
Cancelled · 2
Not for navigation. Counts include only warnings we display; ongoing search-and-rescue traffic is excluded until 30 days after it closes.