Volcanic activity in the Philippine Sea

Submarine eruptions, discoloured water, pumice rafts.

in force
9
last 12 months
1
vs previous 12 (5)
-80%
since 1996
99

Coverage note: the NGA archive ends 2024-05 and live collection began 2026-08-17. Warnings issued in between are here only if they were still in force when collection started, so 2024–2026 are under-counted.

In force now · 9

  1. HYDROPAC 2242/25in force2025-09-02
    Volcanic activity is reported at Io-To in vicinity of 24-45.00N 141-17.3E.
    North Pacific · Philippine Sea · Japan
  2. NAVAREA XI 491/24in force2024-09-19
    Discoloured water observed near Nanpo Shoto at 31-26.4N 140-03.0E on September 18, 2024 at 0545Z. Vessels advised caution.
    North Pacific, Nanpo Shoto
  3. NAVAREA XI 492/24in force2024-09-19
    As of September 19, a volcanic warning for Sumisu Shima at 31-26.3N 140-03.0E expects eruption influence around the volcano.
    North Pacific, Nanpo Shoto
  4. NAVAREA XI 207/23in force2023-06-14
    Discoloured water and submarine volcanic eruption continue near 24-17.2N 141-28.8E, North Pacific, Nanpo Shoto, at 140350Z June. Caution advised.
    North Pacific, Nanpo Shoto
  5. NAVAREA XI 206/23in force2023-06-14
    On June 14, discoloured water was observed near 25-27.1N 141-14.5E in Nanpo Shoto; vessels advised caution.
    North Pacific, Nanpo Shoto
  6. NAVAREA XI 326/21in force2021-10-13
    Discoloured water observed extending south for 5 miles, 2 miles wide, from 27-16.7N 140-56.6E at 120643Z October.
    North Pacific, Nanpo Shoto
  7. NAVAREA XI 325/21in force2021-10-12
    Discoloured water observed within about 0.7 miles of 27-13.6N 140-55.3E in North Pacific, Nanpo Shoto, at 120643Z Oct.
    North Pacific, Nanpo Shoto
  8. NAVAREA XI 231/21in force2021-07-13
    Discoloured water is sighted near Nanpo Shoto at 24-48.8N 141-19.2E, July 13, 08:00 UTC. Vessels advised caution.
    North Pacific, Nanpo Shoto
  9. NAVAREA XI 488/20in force2020-12-18
    Volcanic warning for Nishino Shima at 27-14.6N 140-52.7E, eruption influence expected within 0.9 mile, canceling warnings 0037 and 0316/20.

Longest in force

  1. NAVAREA XI 488/20in force2020-12-18 · 2,073 d
    Volcanic warning for Nishino Shima at 27-14.6N 140-52.7E, eruption influence expected within 0.9 mile, canceling warnings 0037 and 0316/20.
  2. NAVAREA XI 231/21in force2021-07-13 · 1,866 d
    Discoloured water is sighted near Nanpo Shoto at 24-48.8N 141-19.2E, July 13, 08:00 UTC. Vessels advised caution.
    North Pacific, Nanpo Shoto
  3. NAVAREA XI 325/21in force2021-10-12 · 1,775 d
    Discoloured water observed within about 0.7 miles of 27-13.6N 140-55.3E in North Pacific, Nanpo Shoto, at 120643Z Oct.
    North Pacific, Nanpo Shoto
  4. NAVAREA XI 326/21in force2021-10-13 · 1,774 d
    Discoloured water observed extending south for 5 miles, 2 miles wide, from 27-16.7N 140-56.6E at 120643Z October.
    North Pacific, Nanpo Shoto
  5. NAVAREA XI 207/23in force2023-06-14 · 1,165 d
    Discoloured water and submarine volcanic eruption continue near 24-17.2N 141-28.8E, North Pacific, Nanpo Shoto, at 140350Z June. Caution advised.
    North Pacific, Nanpo Shoto

By year

96
01
02
04
05
06
07
08
09
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

Other hazards in the Philippine Sea

Archive · 90 cancelled

  1. HYDROPAC 263/092009-02-01 → 2009-05-09
    Nga chart 97000 (3RD ed)
  2. HYDROPAC 1272/082008-07-05 → 2009-02-01
    Nga chart 97000 (3RD ed)
  3. HYDROPAC 311/082008-02-19 → 2008-07-05
    Nga chart 97000 (3RD ed)
  4. HYDROPAC 118/082008-01-21 → 2008-02-19
    Nga chart 97000 (3RD ed)
  5. HYDROPAC 2192/072007-12-13 → 2008-01-21
    Nga chart 97521 (6TH ed)
  6. HYDROPAC 2128/072007-12-01 → 2008-02-03
    Nga chart 97000 (3RD ed)
  7. HYDROPAC 1771/072007-10-12 → 2007-12-13
    Discolored water with submarine volcanic activity reported vicinity 24-17.3N 141-28.7E at 110125Z oct
  8. HYDROPAC 792/072007-04-29 → 2007-10-12
    Discolored water with submarine volcanic activity reported vicinity 24-17.4N 141-29.1E at 290350Z apr
  9. HYDROPAC 746/072007-04-24 → 2007-04-29
    Discolored water with submarine volcanic activity reported within 200 meters of 24-17.3N 141-29.9E and…
  10. HYDROPAC 742/072007-04-23 → 2007-04-24
    Discolored water with submarine volcanic activity reported within 1000 meters of 24-17.4N 141-29.1E at…
  11. HYDROPAC 309/072007-02-20 → 2007-04-23
    Discolored water with submarine volcanic activity reported within 250 meters of 24-17.1N 141-28.9E at…
  12. HYDROPAC 155/072007-01-23 → 2007-01-24
    Discolored water with submarine volcanic activity reported within 2000 meters of 24-17.3N 141-29.1E at…
  13. HYDROPAC 151/072007-01-23 → 2007-02-20
    Discolored water with submarine volcanic activity reported within 2000 meters of 24-17.3N 141-29.1E at…
  14. HYDROPAC 2414/062006-12-11 → 2007-01-23
    Discolored water with submarine volcanic activity reported within 5500 meters of 24-17.1N 141-28.8E at…
  15. HYDROPAC 2271/062006-11-22 → 2006-12-11
    Discolored water with submarine volcanic activity reported within 3000 meters of 24-17.1N 141-28.8E at…
  16. HYDROPAC 2225/062006-11-16 → 2006-11-22
    Discolored water with submarine volcanic activity reported within 2000 meters of 24-17.1N 141-28.8E at…
  17. HYDROPAC 1921/062006-10-04 → 2008-03-11
    Discolored water with submarine volcanic activity reported within 1700 meters of 24-17.5N 141-29.4E at…
  18. HYDROPAC 1638/062006-08-25 → 2006-08-30
    Discolored water with submarine volcanic activity reported within 50 meters of 24-17.4N 141-29.1E at 250420Z…
  19. HYDROPAC 1411/062006-07-27 → 2006-08-25
    Discolored water with submarine volcanic activity reported within 100 meters of 24-17.4N 141-29.0E at…
  20. HYDROPAC 754/062006-04-25 → 2006-07-29
    Discolored water with volcanic activity reported within 500 meters of 24-17.1N 141-28.9E at 250507Z apr
  21. HYDROPAC 295/062006-02-23 → 2006-07-27
    Discolored water with submarine volcanic activity reported within 300 meters of 24-17.4N 141-29.0E at…
  22. HYDROPAC 74/062006-01-14 → 2006-02-23
    Discolored water with submarine volcanic activity reported in 24-17N 141-29E at 130430Z jan
  23. HYDROPAC 1/062006-01-02 → 2006-01-14
    Discolored water with submarine volcanic activity reported in 24-18.0N 141-27.9E at 020535Z jan
  24. HYDROPAC 2120/052005-12-12 → 2006-01-02
    Discolored water with submarine volcanic activity reported along line joining 24-16.9N 141-28.8E and…
  25. HYDROPAC 1154/052005-07-20 → 2005-12-09
    Discolored water with submarine volcanic activity reported in 24-17.3N 141-28.6E at 200410Z jul
  26. HYDROPAC 1059/052005-07-05 → 2005-07-20
    Discolored water with submarine volcanic activity reported in 24-17.4N 141-29.1E at 050400Z jul
  27. HYDROPAC 1050/052005-07-03 → 2005-07-05
    Spouting steam, possible volcanic activity, reported in 24-17.5N 141-28.5E at 022000Z jul
  28. HYDROPAC 1047/052005-07-02 → 2005-07-03
    Spouting steam, possible volcanic activity, reported in 24-18.4N 141-28.8E at 021025Z jul
  29. HYDROPAC 206/052005-02-01 → 2005-06-01
    Discolored water vicinity 24-17N 141-29E at 010520Z feb
  30. HYDROPAC 1174/042004-07-16 → 2004-07-17
    Discolored water vicinity 24-17N 141-29E
  31. HYDROPAC 1035/042004-06-22 → 2004-07-17
    Discolored water vicinity 24-17N 141-29E at 210240Z jun
  32. HYDROPAC 779/042004-04-30 → 2004-09-08
    Discolored water vicinity 24-17.6N 141-28.9E
  33. HYDROPAC 1466/022002-08-13 → 2002-09-06
    White smoke, possible volcanic activity, vicinity 30-29.0N 140-18.2E at 130600Z aug
  34. HYDROPAC 1463/022002-08-13 → 2002-08-13
    Discolored water vicinity of trackline between 30-29.0N 140-18.2E and 30-32.8N 140-06.1E
  35. HYDROPAC 1451/022002-08-11 → 2002-08-13
    White smoke, possible volcanic activity, vicinity 30-29.0N 140-18.2E at 110838Z aug
  36. HYDROPAC 1687/012001-10-19 → 2002-09-21
    Volcanic eruption vicinity 24-47.7N 141-18.0E at 182306Z oct
  37. HYDROPAC 1513/012001-09-21 → 2002-09-21
    Volcanic eruption vicinity 24-45.6N 141-19.5E at 210120Z sep
  38. HYDROPAC 779/012001-05-21 → 2001-05-22
    Discolored water within 11 miles of 32-27N 139-46E at 210415Z may
  39. HYDROPAC 768/012001-05-20 → 2001-05-21
    Discolored water vicinity 32-19.9N 139-41.9E at 200415Z may
  40. HYDROPAC 863/961996-09-20 → 1999-02-19
    Discolored water in vicinity 27-14.5N 140-54.7E at 200450Z sep

Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts and your national MSI service.

Volcanic activity in the Philippine Sea — page 2 · seahazards