Navigational warnings on 2026-09-21

UTC day · today

issued
20
cancelled
10
in force at end
418
of these still in force
3

What this reporting period contains

20 messages have issue dates in this period, and 10 have cancellation dates in it. A cancellation can close a message issued earlier; subtracting these totals does not give a count of new incidents.

Exercises accounts for 11 of 20 recorded messages (55%), the largest category group in this selection.

NAVAREA XII accounts for 7 of 20 recorded messages (35%), the largest source series group in this selection.

Separate updates to the same activity count as separate messages. The original records below show what was reported and when.

Issued · by type

Exercises11
Nav aids3
Missiles2
Quakes1
Spills1
Surveys1
Wrecks1

Issued · by sea

North Pacific Ocean7
Caribbean Sea2
South Pacific Ocean2
North Atlantic Ocean2
Andaman or Burma Sea1
The Coastal Waters of Southeast Alaska and British Columbia1
Flores Sea1
Arafura Sea1

NAVAREA XII 7 · HYDROPAC 5 · HYDROLANT 2 · NAVAREA IV 2 · USGS earthquakes 1 · NAVAREA II 1 · NOAA IncidentNews 1 · AUSCOAST 1

Issued · 20

Cancelled · 10

Not for navigation. Counts include only warnings we display; ongoing search-and-rescue traffic is excluded until 30 days after it closes.

Navigational warnings on 2026-09-21 · seahazards