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
137
vs previous 12 (141)
-3%
since 1997
2,416

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
    An earthquake of magnitude 5.5 occurred 156 km east of Kuril'sk, Russia, at a depth of 36 km on September 26.
  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
    An earthquake of magnitude 5.5 occurred 156 km east of Kuril'sk, Russia, at a depth of 36 km on September 26.

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 · 2,412 cancelled

  1. USGS-USP0008BTN1997-12-05 → 1997-12-08
    191 km s of ust’-kamchatsk staryy, russia
  2. USGS-USP0008BTM1997-12-05 → 1997-12-08
    209 km ese of mil’kovo, russia
  3. USGS-USP0008BTK1997-12-05 → 1997-12-08
    156 km s of ust’-kamchatsk staryy, russia
  4. USGS-USP0008BTC1997-12-05 → 1997-12-08
    105 km s of ust’-kamchatsk staryy, russia
  5. USGS-USP0008BS41997-12-04 → 1997-12-07
    112 km s of ust’-kamchatsk staryy, russia
  6. USGS-USP0008BS11997-12-04 → 1997-12-07
    34 km sse of iztapa, guatemala
  7. USGS-USP0008BRC1997-12-04 → 1997-12-07
    33 km s of iztapa, guatemala
  8. USGS-USP0008BH31997-11-29 → 1997-12-02
    52 km wsw of tola, nicaragua
  9. USGS-USP0008BB11997-11-25 → 1997-11-28
    Earthquake magnitude 5.5 (mb) in 46.532N 153.382E, depth 33 km at 251701Z nov 97
    Kuril Islands
  10. USGS-USP0008B431997-11-22 → 1997-11-25
    Earthquake magnitude 5.5 (mwc) in 19.379N 108.452W, depth 33 km at 220625Z nov 97
    Revilla Gigedo Islands Region
  11. USGS-USP0008AEN1997-11-10 → 1997-11-13
    135 km se of inarajan village, guam
  12. USGS-USP0008A6V1997-11-06 → 1997-11-09
    19 km nnw of moyogalpa, nicaragua
  13. USGS-USP0008A5B1997-11-05 → 1997-11-08
    Earthquake magnitude 5.9 (mwc) in 27.864N 142.608E, depth 10 km at 052345Z nov 97
    Bonin Islands, Japan Region
  14. USGS-USP000892W1997-10-15 → 1997-10-18
    99 km wsw of adak, alaska
  15. USGS-USP00088SA1997-10-09 → 1997-10-12
    121 km sse of kushiro, japan
  16. USGS-USP00088S21997-10-08 → 1997-10-11
    123 km sse of kushiro, japan
  17. USGS-USP00088JC1997-10-05 → 1997-10-08
    251 km e of kuril’sk, russia
  18. USGS-NC5240391997-10-04 → 1997-10-07
    100 km wnw of samoa, california
  19. USGS-USP000889Y1997-09-30 → 1997-10-03
    Earthquake magnitude 6.2 (mwb) in 31.959N 141.878E, depth 10 km at 300627Z sep 97
    Izu Islands, Japan Region
  20. USGS-USP000888X1997-09-29 → 1997-10-02
    Earthquake magnitude 5.6 (mwc) in 20.197N 145.807E, depth 70 km at 291735Z sep 97
    Maug Islands Region, Northern Mariana Islands
  21. USGS-USP00087VN1997-09-22 → 1997-09-25
    77 km wsw of puerto madero, mexico
  22. USGS-USP00087PA1997-09-18 → 1997-09-21
    212 km wsw of adak, alaska
  23. USGS-USP000875R1997-09-05 → 1997-09-08
    181 km ese of kuril’sk, russia
  24. USGS-USP00086N01997-08-24 → 1997-08-27
    23 km sse of izalco, el salvador
  25. USGS-USP00085HR1997-07-29 → 1997-08-01
    261 km nnw of puerto ayora, ecuador
  26. USGS-USP000852J1997-07-20 → 1997-07-23
    102 km ese of nikolski, alaska
  27. USGS-USP000851T1997-07-19 → 1997-07-22
    4 km ene of el ciruelo, mexico
  28. USGS-USP00084VA1997-07-14 → 1997-07-17
    65 km e of nemuro, japan
  29. USGS-USP00084J61997-07-08 → 1997-07-11
    146 km wsw of adak, alaska
  30. USGS-USP00084HR1997-07-08 → 1997-07-11
    Earthquake magnitude 5.8 (mwc) in 23.799N 142.696E, depth 33 km at 080224Z jul 97
    Volcano Islands, Japan Region
  31. USGS-USP00083ZW1997-06-26 → 1997-06-29
    Earthquake magnitude 5.8 (mwc) in 4.868N 082.611W, depth 10 km at 260612Z jun 97
    South of Panama
  32. USGS-USP00083NK1997-06-17 → 1997-06-20
    195 km wsw of adak, alaska
  33. USGS-USP00082H01997-05-19 → 1997-05-22
    177 km sw of río grande, panama
  34. USGS-USP00082D71997-05-16 → 1997-05-19
    71 km s of ust’-kamchatsk staryy, russia
  35. USGS-USP00082651997-05-12 → 1997-05-15
    230 km sw of la cruz de loreto, mexico
  36. USGS-USP000825C1997-05-12 → 1997-05-15
    225 km sw of la cruz de loreto, mexico
  37. USGS-USP000824W1997-05-11 → 1997-05-14
    5 km nne of iwaki, japan
  38. USGS-USP00081Z61997-05-09 → 1997-05-12
    8 km sse of merizo village, guam
  39. USGS-USP00081XU1997-05-08 → 1997-05-11
    24 km s of corinto, nicaragua
  40. USGS-USP00081XS1997-05-08 → 1997-05-11
    189 km sw of nikolski, alaska
  41. USGS-USP00081JX1997-05-01 → 1997-05-04
    228 km wsw of la cruz de loreto, mexico
  42. USGS-USP000817J1997-04-25 → 1997-04-28
    Earthquake magnitude 5.9 (mwc) in 46.154N 153.108E, depth 33 km at 250537Z apr 97
    Kuril Islands
  43. USGS-USP00081771997-04-25 → 1997-04-28
    Earthquake magnitude 5.6 (mwc) in 46.003N 153.066E, depth 33 km at 250250Z apr 97
    Kuril Islands
  44. USGS-USP00080661997-04-08 → 1997-04-11
    173 km sw of josé maría morelos, mexico
  45. USGS-USP00080651997-04-08 → 1997-04-11
    191 km e of atka, alaska
  46. USGS-USP00080371997-04-07 → 1997-04-10
    41 km ssw of masachapa, nicaragua
  47. USGS-USP0007ZVC1997-04-02 → 1997-04-05
    53 km se of atka, alaska
  48. USGS-USP0007ZTM1997-04-01 → 1997-04-04
    53 km ssw of boca chica, panama
  49. USGS-USP0007ZR91997-03-30 → 1997-04-02
    115 km wsw of adak, alaska
  50. USGS-USP0007ZHS1997-03-27 → 1997-03-30
    288 km wsw of adak, alaska

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 48 · seahazards