Navigational warnings, week 2013-W51

2013-12-16 to 2013-12-22 UTC

issued: 187
cancelled: 196
in force at end: 338
of these still in force: 0

What this reporting period contains

187 messages have issue dates in this period, and 196 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 45 of 187 recorded messages (24%), the largest category group in this selection.

HYDROLANT accounts for 75 of 187 recorded messages (40%), 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	45
Other	34
Cable ops	25
Nav aids	18
Exercises	14
Missiles	14
Quakes	10
Icebergs	10
Derelicts	7
Surveys	3
Debris	2
Spills	2
Ordnance	1
Volcanic	1
Piracy	1

Issued · by sea

South Atlantic Ocean	26
North Pacific Ocean	13
North Atlantic Ocean	13
South China Sea	12
South Pacific Ocean	10
Mediterranean Sea - Eastern Basin	5
Caribbean Sea	5
Indian Ocean	4

HYDROLANT 75 · HYDROPAC 71 · NAVAREA IV 19 · USGS earthquakes 10 · HYDROARC 5 · NAVAREA XII 5 · NOAA IncidentNews 2

Issued · 187

Cancelled · 196

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