Navigational warnings, week 2013-W52

2013-12-23 to 2013-12-29 UTC

issued: 172
cancelled: 161
in force at end: 349
of these still in force: 0

What this reporting period contains

172 messages have issue dates in this period, and 161 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 34 of 172 recorded messages (20%), the largest category group in this selection.

HYDROPAC accounts for 78 of 172 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

Incidents	34
Other	30
Cable ops	21
Nav aids	19
Exercises	17
Icebergs	11
Derelicts	11
Quakes	9
Missiles	6
Surveys	4
Debris	2
Volcanic	2
Spills	2
Containers	2
Storms	1
Wrecks	1

Issued · by sea

South Atlantic Ocean	23
South China Sea	17
North Atlantic Ocean	16
North Pacific Ocean	12
Mediterranean Sea - Eastern Basin	6
North Sea	6
South Pacific Ocean	5
Philippine Sea	5

HYDROPAC 78 · HYDROLANT 66 · NAVAREA IV 13 · USGS earthquakes 9 · HYDROARC 4 · NOAA IncidentNews 2

Issued · 172

Cancelled · 161

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