Navigational warnings, week 2012-W21

2012-05-21 to 2012-05-27 UTC

issued: 136
cancelled: 137
in force at end: 286
of these still in force: 0

What this reporting period contains

136 messages have issue dates in this period, and 137 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 29 of 136 recorded messages (21%), the largest category group in this selection.

HYDROPAC accounts for 57 of 136 recorded messages (42%), 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	29
Incidents	22
Cable ops	22
Other	21
Nav aids	12
Icebergs	8
Derelicts	6
Missiles	6
Quakes	5
Spills	2
Containers	1
Piracy	1
Surveys	1

Issued · by sea

North Pacific Ocean	15
South Atlantic Ocean	12
North Atlantic Ocean	12
Labrador Sea	7
Gulf of Mexico	6
Arabian Sea	4
South Pacific Ocean	4
Mediterranean Sea - Eastern Basin	3

HYDROPAC 57 · HYDROLANT 50 · NAVAREA IV 17 · USGS earthquakes 5 · NAVAREA XII 4 · NOAA IncidentNews 2 · HYDROARC 1

Issued · 136

Cancelled · 137

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