Navigational warnings on 2017-04-20

UTC day · today

issued
27
cancelled
36
in force at end
403
of these still in force
0

What this reporting period contains

27 messages have issue dates in this period, and 36 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 4 of 27 recorded messages (15%), the largest category group in this selection.

HYDROLANT accounts for 12 of 27 recorded messages (44%), 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

Other4
Piracy3
Exercises3
Surveys3
Nav aids3
Volcanic2
Incidents2
Icebergs2
Quakes2
Wrecks1
Ordnance1
Derelicts1

Issued · by sea

North Pacific Ocean4
North Atlantic Ocean3
Philippine Sea2
South Pacific Ocean2
North Sea2
English Channel1
Gulf of Mexico1
Coral Sea1

HYDROLANT 12 · HYDROPAC 7 · NAVAREA IV 3 · NAVAREA XII 2 · USGS earthquakes 2 · HYDROARC 1

Issued · 27

Cancelled · 36

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

Navigational warnings on 2017-04-20 · seahazards