Navigational warnings, week 2012-W38

2012-09-17 to 2012-09-23 UTC

issued: 154
cancelled: 163
in force at end: 323
of these still in force: 0

What this reporting period contains

154 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 43 of 154 recorded messages (28%), the largest category group in this selection.

HYDROLANT accounts for 66 of 154 recorded messages (43%), 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	43
Incidents	21
Other	20
Missiles	16
Cable ops	15
Nav aids	14
Icebergs	9
Surveys	6
Quakes	3
Containers	3
Volcanic	1
Piracy	1
Debris	1
Ordnance	1

Issued · by sea

North Pacific Ocean	12
South Atlantic Ocean	12
North Atlantic Ocean	12
Labrador Sea	7
Black Sea	7
South Pacific Ocean	5
Philippine Sea	4
Indian Ocean	4

HYDROLANT 66 · HYDROPAC 58 · NAVAREA IV 14 · HYDROARC 7 · NAVAREA XII 6 · USGS earthquakes 3

Issued · 154

Cancelled · 163

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