Navigational warnings on 2010-12-21

UTC day · today

issued
23
cancelled
16
in force at end
314
of these still in force
0

What this reporting period contains

23 messages have issue dates in this period, and 16 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, Quakes tie for the largest recorded count, with 6 messages each.

HYDROLANT accounts for 10 of 23 recorded messages (43%), 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

Other6
Quakes6
Nav aids3
Exercises2
Derelicts2
Cable ops1
Missiles1
Piracy1
Incidents1

Issued · by sea

North Pacific Ocean5
Indian Ocean3
Celtic Sea2
Bay of Biscay1
Philippine Sea1
Arabian Sea1
South Atlantic Ocean1
Inner Seas off the West Coast of Scotland1

HYDROLANT 10 · USGS earthquakes 6 · HYDROPAC 5 · NAVAREA XII 1 · HYDROARC 1

Issued · 23

Cancelled · 16

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 2010-12-21 · seahazards