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
    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.
  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 · 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 · 0 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.

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-USP000J8532011-09-16 → 2011-09-19
    128 km ene of miyako, japan
  2. USGS-USP000J84Y2011-09-16 → 2011-09-19
    99 km ne of miyako, japan
  3. USGS-USP000J82K2011-09-15 → 2011-09-18
    68 km e of ?arai, japan
  4. USGS-USP000J7ZS2011-09-13 → 2011-09-16
    Earthquake magnitude 5.7 (mwb) in 5.617N 077.471W, depth 10 km at 130449Z sep 11
    Near the West Coast of Colombia
  5. USGS-USP000J7UR2011-09-09 → 2011-09-12
    66 km sw of vernon, canada
  6. USGS-USP000J7N72011-09-05 → 2011-09-08
    170 km sw of río grande, panama
  7. USGS-USP000J7DC2011-09-02 → 2011-09-05
    170 km e of atka, alaska
  8. USGS-USP000J6V42011-08-22 → 2011-08-25
    86 km ene of hasaki, japan
  9. USGS-USP000J6NX2011-08-19 → 2011-08-22
    61 km ene of namie, japan
  10. USGS-USP000J6KT2011-08-17 → 2011-08-20
    258 km ese of namie, japan
  11. USGS-USP000J6DE2011-08-13 → 2011-08-16
    195 km sw of manuel ávila camacho (ponte duro), mexico
  12. USGS-USP000J6AT2011-08-11 → 2011-08-14
    1 km sse of iwaki, japan
  13. USGS-USP000J5YV2011-08-04 → 2011-08-07
    227 km ssw of severo-kuril’sk, russia
  14. USGS-USP000J5UF2011-08-01 → 2011-08-04
    206 km ese of atka, alaska
  15. USGS-USP000J5U42011-08-01 → 2011-08-04
    24 km nne of miyako, japan
  16. USGS-USP000J5SR2011-07-31 → 2011-08-03
    70 km sse of shizunai-furukawach?, japan
  17. USGS-USP000J5RK2011-07-30 → 2011-08-02
    13 km sse of iwaki, japan
  18. USGS-USP000J5KV2011-07-28 → 2011-07-31
    135 km ne of miyako, japan
  19. USGS-USP000J5H32011-07-26 → 2011-07-29
    76 km e of petropavlovsk-kamchatsky, russia
  20. USGS-USP000J5FR2011-07-25 → 2011-07-28
    49 km e of ?hara, japan
  21. USGS-USP000J5ED2011-07-24 → 2011-07-27
    43 km ne of namie, japan
  22. USGS-USP000J5CN2011-07-23 → 2011-07-26
    Earthquake magnitude 5.5 (mwb) in 13.107N 145.253E, depth 14 km at 231634Z jul 11
    Guam Region
  23. USGS-USP000J5BY2011-07-23 → 2011-07-26
    21 km sse of ?funato, japan
  24. USGS-USP000J54N2011-07-18 → 2011-07-21
    Earthquake magnitude 5.8 (mww) in 51.280N 178.944E, depth 19 km at 182238Z jul 11
    Rat Islands, Aleutian Islands, Alaska
  25. USGS-USP000J4YW2011-07-15 → 2011-07-18
    5 km ne of sakai, japan
  26. USGS-USP000J4S92011-07-12 → 2011-07-15
    2 km s of fortuna, costa rica
  27. USGS-USP000J4GP2011-07-10 → 2011-07-13
    177 km ese of ishinomaki, japan
  28. USGS-USP000J4B12011-07-07 → 2011-07-10
    8 km n of iwaki, japan
  29. USGS-USP000J48B2011-07-06 → 2011-07-09
    89 km ese of takahagi, japan
  30. USGS-USP000J4302011-07-03 → 2011-07-06
    49 km ssw of jiquilillo, nicaragua
  31. USGS-USP000J4102011-07-01 → 2011-07-04
    189 km ese of yigo village, guam
  32. USGS-USP000J3VQ2011-06-28 → 2011-07-01
    171 km e of atka, alaska
  33. USGS-USP000J3UW2011-06-27 → 2011-06-30
    168 km e of atka, alaska
  34. USGS-USP000J3SF2011-06-26 → 2011-06-29
    Earthquake magnitude 5.5 (mwb) in 18.863N 146.279E, depth 99 km at 260919Z jun 11
    Pagan Region, Northern Mariana Islands
  35. USGS-USP000J3PK2011-06-24 → 2011-06-27
    35 km sse of shizunai-furukawach?, japan
  36. USGS-USP000J3MQ2011-06-24 → 2011-06-27
    Earthquake magnitude 7.3 (mww) in 52.050N 171.836W, depth 52 km at 240309Z jun 11
    Fox Islands, Aleutian Islands, Alaska
  37. USGS-USP000J3K62011-06-22 → 2011-06-25
    41 km nne of miyako, japan
  38. USGS-USP000J3JT2011-06-22 → 2011-06-25
    84 km ene of miyako, japan
  39. USGS-USP000J3CW2011-06-18 → 2011-06-21
    41 km wsw of nueva concepción, guatemala
  40. USGS-USP000J3CE2011-06-18 → 2011-06-21
    61 km ene of namie, japan
  41. USGS-USP000J35C2011-06-14 → 2011-06-17
    208 km ese of ishinomaki, japan
  42. USGS-USP000J2ND2011-06-03 → 2011-06-06
    3 km ne of iwaki, japan
  43. USGS-USP000J2KZ2011-06-03 → 2011-06-06
    258 km e of namie, japan
  44. USGS-USP000J24B2011-05-24 → 2011-05-27
    112 km e of miyako, japan
  45. USGS-USP000J21Q2011-05-22 → 2011-05-25
    212 km ese of ishinomaki, japan
  46. USGS-USP000J1ZC2011-05-21 → 2011-05-24
    6 km e of narut?, japan
  47. USGS-USP000J1V82011-05-20 → 2011-05-23
    3 km nne of hasaki, japan
  48. USGS-USP000J1SZ2011-05-18 → 2011-05-21
    116 km se of ust’-kamchatsk staryy, russia
  49. USGS-USP000J1JK2011-05-13 → 2011-05-16
    31 km ese of namie, japan
  50. USGS-USP000J1JG2011-05-13 → 2011-05-16
    7 km ese of atenas, costa rica

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 24 · seahazards