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
3
last 12 months
135
vs previous 12 (141)
-4%
since 1997
2,414

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 · 3

  1. USGS-US7000TE4Bin force2026-09-03
    100 km s of nikolski, alaska
  2. 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.
  3. 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 · 1 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 · 0 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 · 0 d
    100 km s of nikolski, alaska

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-US7000GXLU2022-03-27 → 2022-03-30
    7 km se of esmeraldas, ecuador
  2. USGS-US6000H53E2022-03-16 → 2022-03-19
    83 km se of ishinomaki, japan
  3. HYDROPAC 690/222022-03-16 → 2022-03-16
    Earthquake with magnitude of 7.3 occurred at 161437Z mar
    Sea of Japan · Japan
  4. USGS-US6000H5192022-03-16 → 2022-03-19
    57 km ene of namie, japan
  5. USGS-US6000H5182022-03-16 → 2022-03-19
    62 km ene of namie, japan
  6. USGS-US7000GL8W2022-02-16 → 2022-02-19
    12 km wsw of nueva concepción, guatemala
  7. USGS-US7000GKLV2022-02-13 → 2022-02-16
    168 km ssw of merizo village, guam
  8. USGS-US7000GFTI2022-01-28 → 2022-01-31
    281 km sw of arenas, panama
  9. USGS-US7000GE5Q2022-01-22 → 2022-01-25
    71 km s of unalaska, alaska
  10. USGS-US7000GAWQ2022-01-11 → 2022-01-14
    82 km se of nikolski, alaska
  11. USGS-US7000GAWK2022-01-11 → 2022-01-14
    53 km se of nikolski, alaska
  12. USGS-US7000GAVU2022-01-11 → 2022-01-14
    100 km se of nikolski, alaska
  13. USGS-US7000G9NB2022-01-06 → 2022-01-09
    Earthquake magnitude 6.1 (mww) in 11.937N 087.137W, depth 17 km at 061625Z jan 22
    Near the Coast of Nicaragua
  14. HYDROPAC 29/222022-01-03 → 2022-01-06
    Earthquake with magnitude of 6.3 has occurred in vicinity 27-06N 142-30E at 032108Z jan
    Philippine Sea · Japan
  15. USGS-US6000GEPM2021-12-22 → 2021-12-25
    213 km sw of la cruz de loreto, mexico
  16. USGS-NC736662312021-12-20 → 2021-12-23
    7KM n of petrolia, ca
  17. USGS-NC711270292021-12-20 → 2021-12-23
    29KM w of petrolia, ca
  18. USGS-US6000GAE32021-12-08 → 2021-12-11
    Earthquake magnitude 5.5 (mww) in 44.290N 129.428W, depth 10 km at 080718Z dec 21
    Off the Coast of Oregon
  19. USGS-US6000GADH2021-12-08 → 2021-12-11
    Earthquake magnitude 5.5 (mww) in 44.362N 129.585W, depth 10 km at 080543Z dec 21
    Off the Coast of Oregon
  20. USGS-US6000GAAG2021-12-08 → 2021-12-11
    Earthquake magnitude 5.8 (mww) in 44.261N 129.380W, depth 10 km at 080121Z dec 21
    Off the Coast of Oregon
  21. USGS-US6000GA9W2021-12-08 → 2021-12-11
    Earthquake magnitude 5.8 (mww) in 44.426N 129.525W, depth 10 km at 080036Z dec 21
    Off the Coast of Oregon
  22. USGS-US6000GA8S2021-12-07 → 2021-12-10
    Earthquake magnitude 5.5 (mww) in 44.335N 129.572W, depth 10 km at 072157Z dec 21
    Off the Coast of Oregon
  23. USGS-US6000GA8I2021-12-07 → 2021-12-10
    Earthquake magnitude 5.5 (mww) in 44.387N 129.537W, depth 10 km at 072130Z dec 21
    Off the Coast of Oregon
  24. USGS-US6000G7TW2021-11-30 → 2021-12-03
    Earthquake magnitude 5.5 (mww) in 31.217N 142.438E, depth 20 km at 300653Z nov 21
    Izu Islands, Japan Region
  25. USGS-US7000FXYQ2021-11-29 → 2021-12-02
    Earthquake magnitude 6.3 (mww) in 31.196N 142.503E, depth 11 km at 291240Z nov 21
    Izu Islands, Japan Region
  26. USGS-US7000FX6F2021-11-26 → 2021-11-29
    Earthquake magnitude 5.6 (mww) in 28.922N 142.354E, depth 11 km at 260714Z nov 21
    Bonin Islands, Japan Region
  27. USGS-US7000FWDE2021-11-23 → 2021-11-26
    81 km sw of acajutla, el salvador
  28. USGS-US7000FV5P2021-11-18 → 2021-11-21
    40 km s of puerto san josé, guatemala
  29. USGS-US7000FSKW2021-11-09 → 2021-11-12
    62 km s of masachapa, nicaragua
  30. USGS-US7000FSKU2021-11-09 → 2021-11-12
    72 km s of masachapa, nicaragua
  31. USGS-US7000FSJC2021-11-09 → 2021-11-12
    72 km ssw of masachapa, nicaragua
  32. USGS-US6000FTU32021-10-11 → 2021-10-14
    Earthquake magnitude 5.8 (mww) in 48.297N 153.751E, depth 70 km at 112310Z oct 21
    Kuril Islands
  33. USGS-HV727487822021-10-10 → 2021-10-13
    27 km sse of naalehu, hawaii
  34. USGS-US6000FSL62021-10-07 → 2021-10-10
    5 km sw of chiba, japan
  35. USGS-US6000FRZG2021-10-05 → 2021-10-08
    48 km nne of miyako, japan
  36. USGS-US7000FE1W2021-09-24 → 2021-09-27
    187 km wsw of adak, alaska
  37. USGS-US7000FE0G2021-09-24 → 2021-09-27
    185 km wsw of adak, alaska
  38. USGS-US7000FDTY2021-09-23 → 2021-09-26
    140 km sw of empaque tarriba, mexico
  39. USGS-US7000FDFD2021-09-22 → 2021-09-25
    69 km sw of corinto, nicaragua
  40. USGS-US7000FDDS2021-09-22 → 2021-09-25
    80 km sw of jiquilillo, nicaragua
  41. USGS-US7000FCZF2021-09-20 → 2021-09-23
    Earthquake magnitude 6.1 (mww) in 46.393N 152.488E, depth 35 km at 202025Z sep 21
    Kuril Islands
  42. USGS-AK021BWMMASC2021-09-16 → 2021-09-19
    181 km se of chignik, alaska
  43. NAVAREA XII 473/212021-09-08 → 2021-09-08
    Earthquake with magnitude of 7.4 has occurred in vicinity 17-06N 099-36W at 080148Z sep
    Eastern North Pacific · Mexico
  44. USGS-US7000F93V2021-09-08 → 2021-09-11
    Earthquake magnitude 7.0 (mww) in 16.947N 099.753W, depth 20 km at 080147Z sep 21
    Acapulco, Mexico
  45. USGS-US7000F86S2021-09-05 → 2021-09-08
    291 km sse of cabo san lucas, mexico
  46. USGS-US7000F2WS2021-08-24 → 2021-08-27
    219 km ssw of severo-kuril’sk, russia
  47. USGS-US6000F45X2021-08-11 → 2021-08-14
    Earthquake magnitude 5.5 (mww) in 15.905N 147.258E, depth 10 km at 111502Z aug 21
    Mariana Islands Region
  48. USGS-US6000F1Z72021-08-03 → 2021-08-06
    121 km ene of hasaki, japan
  49. USGS-US6000EXS52021-07-21 → 2021-07-24
    71 km s of burica, panama
  50. USGS-US7000EMZY2021-07-17 → 2021-07-20
    135 km s of burica, panama

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 9 · seahazards