Earthquake & tsunami bulletins in the North Pacific Ocean

Undersea earthquakes of magnitude 5.5 and above (USGS) and the tsunami bulletins NAVAREA coordinators relay.

in force
4
last 12 months
136
vs previous 12 (141)
-4%
since 1997
2,415

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 · 4

  1. USGS-US7000TEFXin force2026-09-04
    156 km e of kuril’sk, russia
  2. USGS-US7000TE4Bin force2026-09-03
    An earthquake magnitude 5.5 struck 100 kilometers south of Nikolski, Alaska, at 03:20 UTC on September 26, at a depth of 10 kilometers.
  3. USGS-US7000TDVTin force2026-09-03
    Earthquake magnitude 6.3, 84 km SSW of Nikolski, Alaska, depth 35 km at 03:11 UTC Sep 26. Tsunami message issued; follow tsunami warning centres.
  4. USGS-US7000TDMPin force2026-09-02
    An earthquake of magnitude 5.6 struck 71 km WSW of Puerto Madero, Mexico, at depth 10 km on September 26.

Longest in force

  1. USGS-US7000TDMPin force2026-09-02 · 2 d
    An earthquake of magnitude 5.6 struck 71 km WSW of Puerto Madero, Mexico, at depth 10 km on September 26.
  2. USGS-US7000TDVTin force2026-09-03 · 1 d
    Earthquake magnitude 6.3, 84 km SSW of Nikolski, Alaska, depth 35 km at 03:11 UTC Sep 26. Tsunami message issued; follow tsunami warning centres.
  3. USGS-US7000TE4Bin force2026-09-03 · 1 d
    An earthquake magnitude 5.5 struck 100 kilometers south of Nikolski, Alaska, at 03:20 UTC on September 26, at a depth of 10 kilometers.
  4. USGS-US7000TEFXin force2026-09-04 · 0 d
    156 km e of kuril’sk, russia

By year

97
98
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

By month (all years)

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

Other hazards in the North Pacific Ocean

Archive · 2,411 cancelled

  1. USGS-USP000DC4E2004-12-29 → 2005-01-01
    62 km e of ishinomaki, japan
  2. USGS-USP000DB5D2004-12-21 → 2004-12-24
    42 km ssw of nemuro, japan
  3. USGS-USP000DAYD2004-12-18 → 2004-12-21
    211 km s of severo-kuril’sk, russia
  4. USGS-USP000DAY22004-12-18 → 2004-12-21
    204 km s of severo-kuril’sk, russia
  5. USGS-USP000DAMD2004-12-13 → 2004-12-16
    12 km ssw of la libertad, el salvador
  6. USGS-USP000DADS2004-12-10 → 2004-12-13
    184 km ne of fais, micronesia
  7. USGS-USP000DA6M2004-12-06 → 2004-12-09
    54 km ssw of nemuro, japan
  8. USGS-USP000D9H32004-11-28 → 2004-12-01
    54 km sw of nemuro, japan
  9. USGS-USP000D9H12004-11-28 → 2004-12-01
    51 km sw of nemuro, japan
  10. USGS-USP000D9BD2004-11-26 → 2004-11-29
    44 km e of shizunai-furukawach?, japan
  11. USGS-USP000D8UU2004-11-20 → 2004-11-23
    34 km sw of acajutla, el salvador
  12. USGS-USP000D8TF2004-11-20 → 2004-11-23
    17 km sse of tejar, costa rica
  13. USGS-USP000D8GX2004-11-15 → 2004-11-18
    32 km ssw of pizarro, colombia
  14. USGS-USP000D8F82004-11-14 → 2004-11-17
    142 km s of kushiro, japan
  15. USGS-USP000D8A42004-11-12 → 2004-11-15
    Earthquake magnitude 5.6 (mwc) in 8.284N 103.002W, depth 10 km at 122013Z nov 04
    Northern East Pacific Rise
  16. USGS-USP000D8A32004-11-12 → 2004-11-15
    Earthquake magnitude 5.6 (mwb) in 8.425N 102.953W, depth 10 km at 121956Z nov 04
    Northern East Pacific Rise
  17. USGS-USP000D84N2004-11-11 → 2004-11-14
    92 km s of kushiro, japan
  18. USGS-USP000D7PF2004-11-04 → 2004-11-07
    21 km sse of shikotan, russia
  19. USGS-USP000D7KQ2004-11-03 → 2004-11-06
    142 km ese of san jose village, northern mariana islands
  20. USGS-USP000D7H42004-11-02 → 2004-11-05
    189 km sw of port mcneill, canada
  21. USGS-USP000D7GW2004-11-02 → 2004-11-05
    Earthquake magnitude 5.7 (mwb) in 28.702N 143.214E, depth 10 km at 020845Z nov 04
    Bonin Islands, Japan Region
  22. USGS-USP000D6GU2004-10-16 → 2004-10-19
    65 km e of ?arai, japan
  23. USGS-USP000D63H2004-10-09 → 2004-10-12
    43 km ssw of masachapa, nicaragua
  24. USGS-USP000D5W42004-10-06 → 2004-10-09
    4 km e of noda, japan
  25. USGS-USP000D5T02004-10-05 → 2004-10-08
    283 km s of punta de burica, panama
  26. USGS-USP000D5S52004-10-04 → 2004-10-07
    152 km ese of saipan, northern mariana islands
  27. USGS-USP000D5G62004-10-01 → 2004-10-04
    1 km wnw of villa el carmen, nicaragua
  28. USGS-USP000D4P22004-09-19 → 2004-09-22
    91 km se of attu station, alaska
  29. USGS-USP000D4672004-09-13 → 2004-09-16
    Earthquake magnitude 6.1 (mwb) in 43.998N 151.408E, depth 8 km at 130300Z sep 04
    East of the Kuril Islands
  30. USGS-USP000D3AR2004-09-01 → 2004-09-04
    65 km e of iwaki, japan
  31. USGS-USP000D3712004-08-30 → 2004-09-02
    150 km sse of severo-kuril’sk, russia
  32. USGS-USP000D2CJ2004-08-18 → 2004-08-21
    8 km e of juchitán de zaragoza, mexico
  33. USGS-USP000D1VQ2004-08-10 → 2004-08-13
    2 km se of miyako, japan
  34. USGS-USP000D1P92004-08-07 → 2004-08-10
    218 km se of nikolski, alaska
  35. USGS-USP000D1GR2004-08-05 → 2004-08-08
    137 km se of san jose village, northern mariana islands
  36. USGS-USP000D1G62004-08-04 → 2004-08-07
    101 km se of petropavlovsk-kamchatsky, russia
  37. USGS-USP000D0J82004-07-20 → 2004-07-23
    Earthquake magnitude 5.9 (mwb) in 19.639N 146.808E, depth 13 km at 201416Z jul 04
    Mariana Islands Region
  38. USGS-USP000D0FX2004-07-19 → 2004-07-22
    62 km sw of vernon, canada
  39. USGS-USP000D0AN2004-07-17 → 2004-07-20
    40 km sse of kamogawa, japan
  40. USGS-USP000D07F2004-07-15 → 2004-07-18
    51 km sw of vernon, canada
  41. USGS-USP000CZ4Q2004-06-29 → 2004-07-02
    129 km ssw of masachapa, nicaragua
  42. USGS-AK00489UDZDS2004-06-28 → 2004-07-01
    98 km wsw of craig, alaska
  43. USGS-USP000CY9V2004-06-20 → 2004-06-23
    291 km sw of arenas, panama
  44. USGS-USP000CXXG2004-06-14 → 2004-06-17
    0 km w of santa catarina mechoacán, mexico
  45. USGS-USP000CXM82004-06-10 → 2004-06-13
    49 km e of shizunai-furukawach?, japan
  46. USGS-USP000CXK42004-06-10 → 2004-06-13
    125 km ssw of corinto, nicaragua
  47. USGS-USP000CX1P2004-06-04 → 2004-06-07
    52 km ssw of false pass, alaska
  48. USGS-USP000CWJ82004-05-29 → 2004-06-01
    140 km se of katsuura, japan
  49. USGS-USP000CWGP2004-05-29 → 2004-06-01
    83 km ene of namie, japan
  50. USGS-USP000CV532004-05-15 → 2004-05-18
    93 km sw of puerto madero, mexico

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.

Earthquake & tsunami bulletins in the North Pacific Ocean — page 38 · seahazards