Volcanic · Natural Phenomenon
Discoloured water observed in extending south for 5 miles, 2 mile wide, from 27-16.7N 140-56.6E at 120643Z oct
North Pacific, Nanpo Shoto · NAVAREA XI 326/21
- issued
- 2021-10-13 04:00Z
- status
- in force
- cancels
- NAVAREA XI 324/21
- authority
- Japan Coast Guard (JHOD)
- position
- 27.278, 140.943
- source
- jhod · first seen 2026-08-17 13:42Z
Original warning text
NORTH PACIFIC, NANPO SHOTO. DISCOLOURED WATER OBSERVED IN EXTENDING SOUTH FOR 5 MILES, 2 MILE WIDE, FROM 27-16.7N 140-56.6E AT 120643Z OCT. VESSELS REQUESTED TO BE CAUTION ADVISED. CANCEL 0324/21.
Conditions at the position · now
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Open-Meteo Marine / Open-Meteo · GEBCO 2020 · model data at the centroid, not an observation
This area · volcanic activity
45 within 180 nm since 1996 · 1 in the last 12 months · 6 in force now
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- Volcanic activity reported at io-to in vicinty of 24-45.00N 141-17.3E2025-09-02
- Volcanic activity reported in area within 400 meters of 24-45.44N 141-19.60E at 100428Z nov2023-11-10
- Discolored water reported in vicinity 25-27.10N 141-14.50E at 140425Z jun2023-06-14
- Discoloured water observed in vicinity of 25-27.1N 141-14.5E at 140425Z jun2023-06-14
- Discolored water reported in vicinity 25-27.10N 141-14.50E at 110433Z may2023-05-12
- Discolored water reported in 26-07.40N 141-06.40E on 19 aug2022-08-19
Season · when volcanic activity happen here
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month of issue, all years in the archive
Nearby now · within 120 nm
- Discoloured water observedVolcanic · 3.3 nm
- 180500UTC issued at 180500UTC dec 2020 volcanic warning volcano name:nishino shima LOCATION:27-14.6N…Volcanic · 4.1 nm
- Chichi shima, futami ko NR.3 light buoy, 27-04.9N 142-11.2E, L.LNav aids · 67.4 nm
- Discoloured water observed in vicinity of 25-27.1N 141-14.5E at 140425Z junVolcanic · 110.8 nm
Worldwide now
12 volcanic activity in force · see all
Volcanic
Submarine eruptions, discoloured water, pumice rafts. All current volcanic activity →
Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.