Navigational warnings on 2013-04-21

UTC day · today

issued
20
cancelled
23
in force at end
327
of these still in force
0

What this reporting period contains

20 messages have issue dates in this period, and 23 have cancellation dates in it. A cancellation can close a message issued earlier; subtracting these totals does not give a count of new incidents.

Incidents accounts for 6 of 20 recorded messages (30%), the largest category group in this selection.

HYDROPAC accounts for 9 of 20 recorded messages (45%), 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

Incidents6
Other4
Cable ops3
Quakes2
Nav aids2
Derelicts2
Icebergs1

Issued · by sea

North Pacific Ocean4
Southern Ocean2
South Atlantic Ocean2
Celtic Sea1
North Atlantic Ocean1
Coral Sea1
Gulf of Alaska1
Philippine Sea1

HYDROPAC 9 · HYDROLANT 6 · NAVAREA XII 2 · USGS earthquakes 2 · NAVAREA IV 1

Issued · 20

Cancelled · 23

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 2013-04-21 · seahazards