Navigational warnings, week 2017-W20

2017-05-15 to 2017-05-21 UTC

  1. 05-15
    27
  2. 05-16
    28
  3. 05-17
    36
  4. 05-18
    25
  5. 05-19
    33
  6. 05-20
    17
  7. 05-21
    17
issued
183
cancelled
192
in force at end
432
of these still in force
0

What this reporting period contains

183 messages have issue dates in this period, and 192 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 52 of 183 recorded messages (28%), the largest category group in this selection.

HYDROLANT accounts for 72 of 183 recorded messages (39%), 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

Other52
Incidents35
Exercises28
Nav aids19
Surveys17
Derelicts10
Icebergs7
Missiles5
Quakes4
Piracy3
Spills1
Cable ops1
Wrecks1

Issued · by sea

North Atlantic Ocean23
South Atlantic Ocean9
North Pacific Ocean9
Mediterranean Sea - Eastern Basin9
Arabian Sea6
Indian Ocean5
Norwegian Sea5
Caribbean Sea4

HYDROLANT 72 · HYDROPAC 70 · NAVAREA IV 21 · NAVAREA XII 8 · HYDROARC 7 · USGS earthquakes 4 · NOAA IncidentNews 1

Issued · 183

Cancelled · 192

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

Navigational warnings, week 2017-W20 (2017-05-15 to 2017-05-21) · seahazards