Navigational warnings, week 2012-W39

2012-09-24 to 2012-09-30 UTC

issued: 152
cancelled: 163
in force at end: 312
of these still in force: 0

What this reporting period contains

152 messages have issue dates in this period, and 163 have cancellation dates in it. A cancellation can close a message issued earlier; subtracting these totals does not give a count of new incidents.

Exercises accounts for 34 of 152 recorded messages (22%), the largest category group in this selection.

HYDROLANT accounts for 68 of 152 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

Exercises	34
Other	23
Incidents	21
Nav aids	17
Cable ops	16
Surveys	10
Missiles	10
Icebergs	8
Quakes	6
Derelicts	4
Spills	2
Containers	1

Issued · by sea

South Atlantic Ocean	15
North Pacific Ocean	12
North Atlantic Ocean	10
Black Sea	9
South China Sea	8
Labrador Sea	7
Arabian Sea	4
North Sea	4

HYDROLANT 68 · HYDROPAC 54 · NAVAREA IV 13 · HYDROARC 7 · USGS earthquakes 6 · NAVAREA XII 2 · NOAA IncidentNews 2

Issued · 152

Cancelled · 163

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