Navigational warnings, week 2010-W50

2010-12-13 to 2010-12-19 UTC

issued: 148
cancelled: 158
in force at end: 305
of these still in force: 0

What this reporting period contains

148 messages have issue dates in this period, and 158 have cancellation dates in it. A cancellation can close a message issued earlier; subtracting these totals does not give a count of new incidents.

Other accounts for 27 of 148 recorded messages (18%), the largest category group in this selection.

HYDROPAC accounts for 76 of 148 recorded messages (51%), 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

Other	27
Exercises	24
Cable ops	21
Incidents	20
Nav aids	19
Piracy	12
Missiles	10
Quakes	6
Derelicts	2
Surveys	2
Wrecks	2
Icebergs	2
Ordnance	1

Issued · by sea

South Atlantic Ocean	13
North Atlantic Ocean	8
Indian Ocean	8
North Sea	7
North Pacific Ocean	7
Philippine Sea	6
Arabian Sea	6
South Pacific Ocean	5

HYDROPAC 76 · HYDROLANT 51 · NAVAREA IV 7 · USGS earthquakes 6 · NAVAREA XII 5 · HYDROARC 3

Issued · 148

Cancelled · 158

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