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-US2000AQJI2017-09-19 → 2017-09-22
    98 km sw of manuel ávila camacho (ponte duro), mexico
  2. USGS-US2000APX52017-09-18 → 2017-09-21
    108 km s of san francisco del mar viejo, mexico
  3. USGS-US2000AP3B2017-09-16 → 2017-09-19
    11 km sse of salina cruz, mexico
  4. USGS-US2000AMK52017-09-14 → 2017-09-17
    Earthquake magnitude 5.8 (mww) in 18.688N 145.747E, depth 166 km at 141741Z sep 17
    Pagan Region, Northern Mariana Islands
  5. USGS-US2000AKCQ2017-09-11 → 2017-09-14
    107 km sw of el palmarcito, mexico
  6. USGS-US2000AK7U2017-09-11 → 2017-09-14
    Earthquake magnitude 5.7 (mww) in 23.953N 142.337E, depth 35 km at 111735Z sep 17
    Volcano Islands, Japan Region
  7. USGS-US2000AJ8S2017-09-10 → 2017-09-13
    75 km se of shizunai-furukawach?, japan
  8. USGS-US2000AJ512017-09-10 → 2017-09-13
    92 km s of san francisco del mar viejo, mexico
  9. USGS-US2000AILQ2017-09-09 → 2017-09-12
    95 km ssw of manuel ávila camacho (ponte duro), mexico
  10. NAVAREA XII 393/172017-09-08 → 2017-09-08
    An earthquake occurred at 080449Z sep with a preliminary magnitude of 8.2, in 14-54N 094-00W
    Eastern North Pacific · Mexico
  11. USGS-US2000AHV72017-09-08 → 2017-09-11
    100 km ssw of cabeza de toro, mexico
  12. USGS-US2000AHV02017-09-08 → 2017-09-11
    2017 tehuantepec, mexico earthquake
  13. USGS-US2000AEK22017-09-02 → 2017-09-05
    148 km se of san jose village, northern mariana islands
  14. USGS-US2000A6902017-08-09 → 2017-08-12
    55 km ssw of nikolski, alaska
  15. USGS-US2000A68X2017-08-09 → 2017-08-12
    61 km ssw of nikolski, alaska
  16. USGS-US2000A2R42017-07-30 → 2017-08-02
    268 km ene of kuril’sk, russia
  17. USGS-US2000A02T2017-07-23 → 2017-07-26
    139 km ene of miyako, japan
  18. USGS-US20009YB72017-07-20 → 2017-07-23
    52 km e of namie, japan
  19. USGS-US20009Q322017-06-28 → 2017-07-01
    92 km e of shikotan, russia
  20. USGS-US20009P1A2017-06-22 → 2017-06-25
    28 km sw of puerto san josé, guatemala
  21. USGS-US20009N9R2017-06-17 → 2017-06-20
    Earthquake magnitude 5.5 (mww) in 11.302N 086.655W, depth 40 km at 171347Z jun 17
    Near the Coast of Nicaragua
  22. USGS-US20009MJI2017-06-14 → 2017-06-17
    57 km ssw of la barra de colotepec, mexico
  23. USGS-US20009MBT2017-06-14 → 2017-06-17
    2 km ssw of san pablo, guatemala
  24. USGS-US20009MBF2017-06-14 → 2017-06-17
    110 km sw of puerto madero, mexico
  25. USGS-US20009LSG2017-06-10 → 2017-06-13
    77 km sw of puerto madero, mexico
  26. USGS-US10008WST2017-05-31 → 2017-06-03
    Earthquake magnitude 5.5 (mww) in 19.080N 145.836E, depth 118 km at 310629Z may 17
    Maug Islands Region, Northern Mariana Islands
  27. USGS-US10008VVL2017-05-28 → 2017-05-31
    178 km sse of king cove, alaska
  28. USGS-US10008UVV2017-05-24 → 2017-05-27
    163 km ese of nikolski, alaska
  29. USGS-US10008U482017-05-22 → 2017-05-25
    81 km e of shikotan, russia
  30. USGS-US10008TQJ2017-05-20 → 2017-05-23
    201 km ssw of barra de navidad, mexico
  31. USGS-US10008RTU2017-05-12 → 2017-05-15
    78 km ssw of acajutla, el salvador
  32. USGS-US10008QQM2017-05-09 → 2017-05-12
    97 km ssw of adak, alaska
  33. USGS-US10008QH72017-05-08 → 2017-05-11
    95 km ssw of adak, alaska
  34. USGS-US10008QGX2017-05-08 → 2017-05-11
    98 km ssw of adak, alaska
  35. USGS-US10008LAI2017-04-27 → 2017-04-30
    Earthquake magnitude 5.7 (mww) in 51.208N 178.635E, depth 19 km at 271446Z apr 17
    Rat Islands, Aleutian Islands, Alaska
  36. USGS-US10008EF72017-04-04 → 2017-04-07
    78 km sse of adak, alaska
  37. USGS-US20008UZN2017-03-27 → 2017-03-30
    63 km w of attu station, alaska
  38. USGS-US20008SD82017-03-15 → 2017-03-18
    Earthquake magnitude 5.6 (mww) in 51.079N 179.076E, depth 19 km at 152219Z mar 17
    Rat Islands, Aleutian Islands, Alaska
  39. USGS-US100087H52017-03-07 → 2017-03-10
    62 km ene of mutsu, japan
  40. USGS-US20008MW42017-02-28 → 2017-03-03
    30 km ene of namie, japan
  41. USGS-US10007WEW2017-01-31 → 2017-02-03
    28 km s of esmeraldas, ecuador
  42. USGS-US10007V502017-01-24 → 2017-01-27
    209 km se of inarajan village, guam
  43. USGS-US10007NAF2016-12-28 → 2016-12-31
    13 km ne of daigo, japan
  44. USGS-US10007LQE2016-12-21 → 2016-12-24
    Earthquake magnitude 5.9 (mww) in 21.514N 145.408E, depth 8 km at 211643Z dec 16
    Mariana Islands Region
  45. HYDROPAC 3921/162016-12-18 → 2016-12-19
    Tsunami warning
    Western North Pacific
  46. USGS-US2000828L2016-12-18 → 2016-12-21
    135 km ssw of colonia, micronesia
  47. USGS-US2000819R2016-12-16 → 2016-12-19
    12 km s of masagua, guatemala
  48. USGS-US200080TD2016-12-14 → 2016-12-17
    Earthquake magnitude 5.5 (mww) in 21.370N 144.218E, depth 10 km at 142114Z dec 16
    Mariana Islands Region
  49. USGS-US200080M32016-12-14 → 2016-12-17
    Earthquake magnitude 6.0 (mww) in 21.290N 144.404E, depth 22 km at 140201Z dec 16
    Mariana Islands Region
  50. HYDROPAC 3818/162016-12-08 → 2016-12-08
    Tsunami warning
    North Pacific

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 15 · seahazards