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-US20007Z6R2016-12-08 → 2016-12-11
    164 km w of ferndale, california
  2. USGS-US10007EKB2016-12-03 → 2016-12-06
    93 km se of attu station, alaska
  3. USGS-US10007CVF2016-11-28 → 2016-12-01
    214 km w of bandon, oregon
  4. USGS-US10007C8B2016-11-25 → 2016-11-28
    127 km ese of mil’kovo, russia
  5. USGS-US10007C5Y2016-11-24 → 2016-11-27
    182 km se of ust’-kamchatsk staryy, russia
  6. USGS-US10007C4W2016-11-24 → 2016-11-27
    156 km ssw of puerto el triunfo, el salvador
  7. USGS-US10007BWB2016-11-23 → 2016-11-26
    41 km se of namie, japan
  8. HYDROPAC 3595/162016-11-21 → 2016-11-21
    Tsunami warning
    Western North Pacific · Japan
  9. USGS-US10007B882016-11-21 → 2016-11-24
    35 km ese of namie, japan
  10. USGS-US100077JC2016-11-14 → 2016-11-17
    Earthquake magnitude 5.6 (mww) in 51.074N 178.840E, depth 34 km at 140212Z nov 16
    Rat Islands, Aleutian Islands, Alaska
  11. USGS-US1000775E2016-11-12 → 2016-11-15
    214 km s of punta de burica, panama
  12. USGS-US1000770M2016-11-11 → 2016-11-14
    24 km ene of ishinomaki, japan
  13. USGS-US100072BS2016-10-27 → 2016-10-30
    141 km s of false pass, alaska
  14. USGS-US20007GA12016-10-23 → 2016-10-26
    29 km ssw of el naranjo, mexico
  15. USGS-US20007G962016-10-23 → 2016-10-26
    114 km ene of shikotan, russia
  16. USGS-US20007FJ22016-10-20 → 2016-10-23
    Earthquake magnitude 5.6 (mww) in 22.243N 143.755E, depth 104 km at 200625Z oct 16
    Volcano Islands, Japan Region
  17. USGS-US10006TK42016-09-28 → 2016-10-01
    20 km nne of nagarote, nicaragua
  18. USGS-US10006RTE2016-09-23 → 2016-09-26
    142 km ese of katsuura, japan
  19. USGS-US10006R422016-09-20 → 2016-09-23
    Earthquake magnitude 6.1 (mww) in 30.502N 142.048E, depth 9 km at 201621Z sep 16
    Izu Islands, Japan Region
  20. USGS-US10006PPY2016-09-15 → 2016-09-18
    11 km nne of la paz centro, nicaragua
  21. USGS-US10006JZI2016-09-03 → 2016-09-06
    Earthquake magnitude 5.5 (mb) in 20.282N 147.395E, depth 10 km at 031404Z sep 16
    Mariana Islands Region
  22. USGS-NC726893312016-09-03 → 2016-09-06
    124 km wsw of ferndale, california
  23. USGS-US10006FFG2016-08-20 → 2016-08-23
    169 km ene of miyako, japan
  24. USGS-US10006FDP2016-08-20 → 2016-08-23
    170 km ene of miyako, japan
  25. USGS-US10006DVD2016-08-15 → 2016-08-18
    64 km e of namie, japan
  26. USGS-US10006A2K2016-08-04 → 2016-08-07
    Earthquake magnitude 6.3 (mww) in 24.945N 142.014E, depth 510 km at 041624Z aug 16
    Volcano Islands, Japan Region
  27. USGS-US20006H2E2016-07-23 → 2016-07-26
    Earthquake magnitude 5.5 (mb) in 14.890N 103.525W, depth 10 km at 230851Z jul 16
    Off the Coast of Guerrero, Mexico
  28. USGS-US100062HG2016-07-11 → 2016-07-14
    33 km nnw of rosa zarate, ecuador
  29. USGS-US100062HD2016-07-11 → 2016-07-14
    33 km nnw of rosa zarate, ecuador
  30. USGS-US200067AZ2016-06-27 → 2016-06-30
    8 km s of la reforma, mexico
  31. USGS-US2000671Z2016-06-26 → 2016-06-29
    119 km e of iwaki, japan
  32. USGS-US200063CY2016-06-10 → 2016-06-13
    Earthquake magnitude 6.1 (mww) in 12.832N 086.963W, depth 10 km at 100325Z jun 16
    Nicaragua
  33. USGS-US200062I72016-06-07 → 2016-06-10
    95 km sw of barra de navidad, mexico
  34. USGS-US200062I12016-06-07 → 2016-06-10
    106 km ssw of barra de navidad, mexico
  35. USGS-US20005ZV02016-06-02 → 2016-06-05
    176 km ssw of emiliano zapata, mexico
  36. USGS-US20005ZC82016-05-31 → 2016-06-03
    Earthquake magnitude 5.9 (mww) in 47.548N 154.364E, depth 18 km at 311004Z may 16
    Kuril Islands
  37. USGS-US10005I9N2016-05-18 → 2016-05-21
    24 km nw of rosa zarate, ecuador
  38. USGS-US10005I5T2016-05-18 → 2016-05-21
    32 km se of muisne, ecuador
  39. USGS-US10005HP62016-05-16 → 2016-05-19
    Earthquake magnitude 5.5 (mwc) in 8.504N 103.112W, depth 10 km at 160639Z may 16
    Northern East Pacific Rise
  40. USGS-US10005HF52016-05-14 → 2016-05-17
    Earthquake magnitude 5.8 (mww) in 8.560N 102.792W, depth 10 km at 141821Z may 16
    Northern East Pacific Rise
  41. USGS-US10005FTW2016-05-08 → 2016-05-11
    3 km wnw of san agustín chayuco, mexico
  42. USGS-US10005EL72016-05-07 → 2016-05-10
    115 km sw of barra de navidad, mexico
  43. USGS-US10005D6S2016-05-03 → 2016-05-06
    64 km e of shikotan, russia
  44. USGS-US10005CC42016-04-29 → 2016-05-02
    Earthquake magnitude 6.6 (mww) in 10.275N 103.736W, depth 10 km at 290133Z apr 16
    Northern East Pacific Rise
  45. USGS-US10005BXB2016-04-27 → 2016-04-30
    75 km wsw of puerto madero, mexico
  46. USGS-US20005LI92016-04-25 → 2016-04-28
    83 km wsw of puerto madero, mexico
  47. USGS-US20005L3V2016-04-23 → 2016-04-26
    26 km w of muisne, ecuador
  48. USGS-US20005K662016-04-20 → 2016-04-23
    65 km ene of namie, japan
  49. USGS-US20005KB62016-04-20 → 2016-04-23
    10 km n of muisne, ecuador
  50. USGS-US20005K372016-04-20 → 2016-04-23
    21 km w of muisne, ecuador

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.