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
2
last 12 months
134
vs previous 12 (141)
-5%
since 1997
2,413

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 · 2

  1. 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.
  2. 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.

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-HV741030362024-02-09 → 2024-02-12
    2 km sw of pāhala, hawaii
  2. USGS-US7000LUAI2024-01-27 → 2024-01-30
    15 km w of taxisco, guatemala
  3. USGS-AK024JYW3SK2024-01-12 → 2024-01-15
    69 km wnw of port alexander, alaska
  4. USGS-US6000M05C2023-12-28 → 2023-12-31
    115 km se of kuril’sk, russia
  5. USGS-US7000LL462023-12-23 → 2023-12-26
    115 km sse of vilyuchinsk, russia
  6. USGS-USD0010B4F2023-12-21 → 2023-12-24
    116 km se of adak, alaska
  7. USGS-US7000LJHG2023-12-16 → 2023-12-19
    Earthquake magnitude 5.7 (mww) in 20.245N 145.685E, depth 10 km at 160950Z dec 23
    Maug Islands Region, Northern Mariana Islands
  8. USGS-US7000LHXD2023-12-10 → 2023-12-13
    Earthquake magnitude 5.6 (mww) in 18.821N 146.099E, depth 95 km at 101411Z dec 23
    Pagan Region, Northern Mariana Islands
  9. USGS-US7000LE9I2023-11-28 → 2023-12-01
    122 km ese of nikolski, alaska
  10. USGS-US6000LQQC2023-11-25 → 2023-11-28
    Earthquake magnitude 5.6 (mww) in 19.945N 145.416E, depth 10 km at 251718Z nov 23
    Maug Islands Region, Northern Mariana Islands
  11. USGS-US6000LQPW2023-11-25 → 2023-11-28
    Earthquake magnitude 5.6 (mww) in 20.064N 145.535E, depth 10 km at 251510Z nov 23
    Maug Islands Region, Northern Mariana Islands
  12. USGS-US6000LQK32023-11-24 → 2023-11-27
    Earthquake magnitude 5.5 (mww) in 19.867N 109.291W, depth 10 km at 241926Z nov 23
    Revilla Gigedo Islands Region
  13. USGS-US6000LQF92023-11-24 → 2023-11-27
    Earthquake magnitude 6.9 (mww) in 20.132N 145.519E, depth 22 km at 240905Z nov 23
    Maug Islands Region, Northern Mariana Islands
  14. USGS-US6000LPHM2023-11-19 → 2023-11-22
    82 km ene of yokohama, japan
  15. USGS-US7000LA132023-11-10 → 2023-11-13
    262 km ene of kuril’sk, russia
  16. USGS-US7000L9IP2023-11-08 → 2023-11-11
    148 km ese of kuril’sk, russia
  17. USGS-US6000LGRT2023-10-20 → 2023-10-23
    172 km wsw of merizo village, guam
  18. USGS-US6000LCQ82023-10-04 → 2023-10-07
    Earthquake magnitude 5.5 (mww) in 30.802N 142.065E, depth 8 km at 040557Z oct 23
    Izu Islands, Japan Region
  19. USGS-US6000LCPX2023-10-04 → 2023-10-07
    Earthquake magnitude 5.6 (mww) in 31.042N 141.862E, depth 10 km at 040455Z oct 23
    Izu Islands, Japan Region
  20. USGS-US6000LBGS2023-09-28 → 2023-10-01
    117 km sse of kuril’sk, russia
  21. USGS-US7000KX7T2023-09-21 → 2023-09-24
    Earthquake magnitude 5.7 (mww) in 30.966N 141.801E, depth 13 km at 212122Z sep 23
    Izu Islands, Japan Region
  22. USGS-US7000KWM62023-09-19 → 2023-09-22
    Earthquake magnitude 5.8 (mww) in 30.996N 141.990E, depth 8 km at 190622Z sep 23
    Izu Islands, Japan Region
  23. USGS-US7000KWIS2023-09-18 → 2023-09-21
    20 km ene of onagawa chō, japan
  24. USGS-US7000KWAZ2023-09-17 → 2023-09-20
    229 km w of port mcneill, canada
  25. USGS-US7000KUBT2023-09-08 → 2023-09-11
    5 km nnw of emiliano zapata, mexico
  26. USGS-US7000KUB52023-09-08 → 2023-09-11
    12 km w of emiliano zapata, mexico
  27. USGS-US7000KT2I2023-09-03 → 2023-09-06
    Earthquake magnitude 5.5 (mww) in 6.818N 147.914E, depth 10 km at 032129Z sep 23
    State of Yap, Federated States of Micronesia
  28. USGS-US7000KQTQ2023-08-24 → 2023-08-27
    116 km e of yamada, japan
  29. USGS-US6000KZV32023-08-14 → 2023-08-17
    Earthquake magnitude 6.1 (mww) in 13.347N 147.530E, depth 8 km at 141351Z aug 23
    Mariana Islands Region
  30. USGS-US6000KZ5S2023-08-11 → 2023-08-14
    Earthquake magnitude 5.9 (mww) in 41.122N 142.830E, depth 34 km at 110014Z aug 23
    Hokkaido, Japan Region
  31. USGS-US6000KYTY2023-08-09 → 2023-08-12
    7 km nne of tonalá, mexico
  32. USGS-US6000KXFL2023-08-03 → 2023-08-06
    266 km s of burica, panama
  33. USGS-US6000KWL62023-07-30 → 2023-08-02
    Earthquake magnitude 5.7 (mww) in 12.806N 090.905W, depth 9 km at 300110Z jul 23
    Off the Coast of Central America
  34. USGS-US7000KGPB2023-07-19 → 2023-07-22
    43 km s of intipucá, el salvador
  35. USGS-US7000KGJE2023-07-18 → 2023-07-21
    173 km sw of la manzanilla, mexico
  36. NAVAREA XII 440/232023-07-16 → 2023-07-16
    Earthquake with magnitude of 7.3 has occurred in vicinity 54-30.00N 160-48.00W at 160648Z jul
    North Pacific · Alaska
  37. USGS-US7000KG302023-07-16 → 2023-07-19
    2023 sand point, alaska earthquake
  38. USGS-US7000KFNC2023-07-14 → 2023-07-17
    Earthquake magnitude 6.3 (mww) in 14.900N 093.901W, depth 34 km at 140929Z jul 23
    Offshore Chiapas, Mexico
  39. USGS-US7000K9F02023-06-18 → 2023-06-21
    Earthquake magnitude 6.4 (mww) in 23.167N 108.692W, depth 4 km at 182030Z jun 23
    Gulf of California
  40. USGS-US7000K94B2023-06-17 → 2023-06-20
    110 km s of honchō, japan
  41. USGS-US7000K7SU2023-06-11 → 2023-06-14
    20 km wsw of biratori, japan
  42. USGS-US7000K58Z2023-05-31 → 2023-06-03
    108 km sse of ust’-kamchatsk staryy, russia
  43. USGS-US7000K4W12023-05-30 → 2023-06-02
    Earthquake magnitude 5.8 (mww) in 24.047N 142.997E, depth 10 km at 300052Z may 23
    Volcano Islands, Japan Region
  44. USGS-US7000K46F2023-05-26 → 2023-05-29
    12 km se of narutō, japan
  45. USGS-NC738909062023-05-21 → 2023-05-24
    108KM w of petrolia, ca
  46. USGS-US6000KBCL2023-05-12 → 2023-05-15
    109 km ssw of merizo village, guam
  47. USGS-US6000K9UE2023-05-05 → 2023-05-08
    68 km ene of mutsu, japan
  48. USGS-US6000K57X2023-04-18 → 2023-04-21
    100 km se of mil’kovo, russia
  49. USGS-US6000K42Y2023-04-13 → 2023-04-16
    237 km sw of port mcneill, canada
  50. USGS-US6000K20G2023-04-04 → 2023-04-07
    73 km s of boca chica, 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 7 · seahazards