Navigational warnings, week 2016-W18

2016-05-02 to 2016-05-08 UTC

issued: 166
cancelled: 139
in force at end: 393
of these still in force: 0

What this reporting period contains

166 messages have issue dates in this period, and 139 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 31 of 166 recorded messages (19%), the largest category group in this selection.

HYDROPAC accounts for 69 of 166 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

Incidents	31
Other	27
Exercises	24
Nav aids	19
Icebergs	13
Missiles	9
Cable ops	8
Quakes	8
Surveys	6
Piracy	6
Spills	5
Ordnance	4
Wrecks	3
Derelicts	2
Restricted	1

Issued · by sea

North Atlantic Ocean	18
North Pacific Ocean	17
South Atlantic Ocean	11
South China Sea	8
South Pacific Ocean	7
North Sea	6
Indian Ocean	5
Bay of Bengal	5

HYDROPAC 69 · HYDROLANT 55 · NAVAREA IV 17 · USGS earthquakes 8 · NAVAREA XII 7 · HYDROARC 5 · NOAA IncidentNews 5

Issued · 166

Cancelled · 139

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