Navigational warnings, week 2016-W37

2016-09-12 to 2016-09-18 UTC

issued: 229
cancelled: 196
in force at end: 481
of these still in force: 0

What this reporting period contains

229 messages have issue dates in this period, and 196 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 229 recorded messages (19%), the largest category group in this selection.

HYDROPAC accounts for 88 of 229 recorded messages (38%), 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
Other	41
Incidents	31
Nav aids	23
Missiles	17
Icebergs	14
Cable ops	13
Derelicts	11
Surveys	11
Quakes	8
Debris	8
Restricted	5
Wrecks	3
Spills	1

Issued · by sea

South Atlantic Ocean	23
North Atlantic Ocean	18
North Pacific Ocean	15
Indian Ocean	11
Mediterranean Sea - Eastern Basin	7
Barentsz Sea	7
Labrador Sea	7
South Pacific Ocean	7

HYDROPAC 88 · HYDROLANT 71 · NAVAREA IV 31 · HYDROARC 20 · NAVAREA XII 10 · USGS earthquakes 8 · NOAA IncidentNews 1

Issued · 229

Cancelled · 196

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