Navigational warnings, week 2015-W52

2015-12-21 to 2015-12-27 UTC

issued: 154
cancelled: 167
in force at end: 345
of these still in force: 0

What this reporting period contains

154 messages have issue dates in this period, and 167 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 37 of 154 recorded messages (24%), the largest category group in this selection.

HYDROPAC accounts for 74 of 154 recorded messages (48%), 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	37
Other	26
Nav aids	14
Exercises	14
Cable ops	13
Icebergs	12
Derelicts	10
Missiles	9
Surveys	8
Quakes	5
Wrecks	3
Spills	2
Structures	1

Issued · by sea

South Atlantic Ocean	12
North Atlantic Ocean	12
Mediterranean Sea - Eastern Basin	11
North Pacific Ocean	8
Caribbean Sea	7
Arabian Sea	7
Indian Ocean	5
South China Sea	5

HYDROPAC 74 · HYDROLANT 44 · NAVAREA IV 23 · USGS earthquakes 5 · NAVAREA XII 4 · HYDROARC 3 · NOAA IncidentNews 1

Issued · 154

Cancelled · 167

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