Navigational warnings on 2010-12-20

UTC day · today

issued
20
cancelled
18
in force at end
307
of these still in force
0

What this reporting period contains

20 messages have issue dates in this period, and 18 have cancellation dates in it. A cancellation can close a message issued earlier; subtracting these totals does not give a count of new incidents.

4 category groups tie for the largest recorded count, with 3 messages each.

HYDROPAC accounts for 12 of 20 recorded messages (60%), 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

Other3
Exercises3
Piracy3
Incidents3
Missiles2
Quakes2
Nav aids2
Wrecks1
Cable ops1

Issued · by sea

Arabian Sea4
North Pacific Ocean4
Bay of Bengal2
South China Sea1
Indian Ocean1
North Atlantic Ocean1
Gulf of Alaska1
North Sea1

HYDROPAC 12 · HYDROLANT 4 · NAVAREA XII 2 · USGS earthquakes 2

Issued · 20

Cancelled · 18

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 2010-12-20 · seahazards