Navigational warnings, week 2017-W17

2017-04-24 to 2017-04-30 UTC

  1. 04-24
    48
  2. 04-25
    26
  3. 04-26
    25
  4. 04-27
    28
  5. 04-28
    49
  6. 04-29
    31
  7. 04-30
    28
issued
235
cancelled
213
in force at end
400
of these still in force
0

What this reporting period contains

235 messages have issue dates in this period, and 213 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 46 of 235 recorded messages (20%), the largest category group in this selection.

HYDROPAC accounts for 102 of 235 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

Other46
Exercises42
Incidents35
Nav aids24
Surveys22
Icebergs14
Quakes10
Missiles10
Derelicts7
Wrecks7
Piracy5
Spills5
Cable ops4
Debris3
Volcanic1

Issued · by sea

North Pacific Ocean21
North Atlantic Ocean20
South China Sea12
South Pacific Ocean12
South Atlantic Ocean10
Black Sea9
Gulf of Mexico8
Arabian Sea8

HYDROPAC 102 · HYDROLANT 81 · NAVAREA IV 21 · NAVAREA XII 14 · USGS earthquakes 9 · NOAA IncidentNews 5 · HYDROARC 3

Issued · 235

Cancelled · 213

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-W17 (2017-04-24 to 2017-04-30) · seahazards