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
4
last 12 months
136
vs previous 12 (141)
-4%
since 1997
2,415

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 · 4

  1. USGS-US7000TEFXin force2026-09-04
    156 km e of kuril’sk, russia
  2. 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.
  3. 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.
  4. 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 · 1 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.
  4. USGS-US7000TEFXin force2026-09-04 · 0 d
    156 km e of kuril’sk, russia

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-USP000CA402003-10-11 → 2003-10-14
    116 km s of kushiro, japan
  2. USGS-USP000C9ZA2003-10-09 → 2003-10-12
    134 km se of shizunai-furukawach?, japan
  3. USGS-USP000C9YP2003-10-08 → 2003-10-11
    88 km sse of kushiro, japan
  4. USGS-USP000C9XS2003-10-08 → 2003-10-11
    87 km sse of kushiro, japan
  5. USGS-USP000C9X72003-10-08 → 2003-10-11
    39 km sse of kushiro, japan
  6. USGS-USP000C9SY2003-10-06 → 2003-10-09
    85 km sse of kushiro, japan
  7. USGS-USP000C9342003-09-29 → 2003-10-02
    175 km s of kushiro, japan
  8. USGS-USP000C9292003-09-29 → 2003-10-02
    103 km s of kushiro, japan
  9. USGS-USP000C90R2003-09-29 → 2003-10-02
    58 km s of kushiro, japan
  10. USGS-USP000C8XD2003-09-28 → 2003-10-01
    48 km se of kushiro, japan
  11. USGS-USP000C8VY2003-09-27 → 2003-09-30
    204 km ese of kuril’sk, russia
  12. USGS-USP000C8QW2003-09-26 → 2003-09-29
    110 km s of kushiro, japan
  13. USGS-USP000C8P32003-09-26 → 2003-09-29
    94 km sse of kushiro, japan
  14. USGS-USP000C8NG2003-09-26 → 2003-09-29
    108 km s of kushiro, japan
  15. USGS-USP000C8MB2003-09-25 → 2003-09-28
    119 km ese of shizunai-furukawach?, japan
  16. USGS-USP000C8M92003-09-25 → 2003-09-28
    130 km s of kushiro, japan
  17. USGS-USP000C8M82003-09-25 → 2003-09-28
    124 km ese of shizunai-furukawach?, japan
  18. USGS-USP000C8M02003-09-25 → 2003-09-28
    122 km ese of shizunai-furukawach?, japan
  19. USGS-USP000C8KW2003-09-25 → 2003-09-28
    78 km se of obihiro, japan
  20. USGS-OFFICIAL20030925195006360_272003-09-25 → 2003-09-28
    2003 tokachi-oki earthquake
  21. USGS-USP000C85S2003-09-21 → 2003-09-24
    228 km sw of merizo village, guam
  22. USGS-USP000C8272003-09-20 → 2003-09-23
    12 km sse of kamogawa, japan
  23. USGS-USP000C6SR2003-09-04 → 2003-09-07
    37 km s of boca chica, panama
  24. USGS-USP000C6C52003-08-31 → 2003-09-03
    Earthquake magnitude 5.5 (mwb) in 10.536N 146.352E, depth 57 km at 310901Z aug 03
    South of the Mariana Islands
  25. USGS-USP000C69A2003-08-30 → 2003-09-02
    54 km sse of shizunai-furukawach?, japan
  26. USGS-USP000C65E2003-08-28 → 2003-08-31
    63 km se of yigo village, guam
  27. USGS-USP000C5XU2003-08-25 → 2003-08-28
    202 km sw of josé maría morelos, mexico
  28. USGS-USP000C5VZ2003-08-25 → 2003-08-28
    5 km ssw of la gomera, guatemala
  29. USGS-USP000C4M02003-08-11 → 2003-08-14
    161 km sw of emiliano zapata, mexico
  30. USGS-USP000C3BZ2003-07-25 → 2003-07-28
    83 km sse of nikolski, alaska
  31. USGS-USP000C3BU2003-07-25 → 2003-07-28
    7 km nw of matsushima, japan
  32. USGS-USP000C3AY2003-07-25 → 2003-07-28
    8 km nw of matsushima, japan
  33. USGS-USP000C2RT2003-07-17 → 2003-07-20
    241 km sw of la cruz de loreto, mexico
  34. USGS-USP000C2BK2003-07-13 → 2003-07-16
    77 km ssw of acajutla, el salvador
  35. USGS-AK0038VKFA422003-07-12 → 2003-07-15
    47 km ssw of port alexander, alaska
  36. USGS-GCMTC071203E2003-07-12 → 2003-07-15
    122 km wsw of hydaburg, alaska
  37. USGS-USP000C1GX2003-07-02 → 2003-07-05
    Earthquake magnitude 5.9 (mwc) in 42.323N 144.842E, depth 24 km at 022352Z jul 03
    Hokkaido, Japan Region
  38. USGS-USP000C1FM2003-07-02 → 2003-07-05
    152 km e of la playa, mexico
  39. USGS-USP000C1B22003-06-30 → 2003-07-03
    175 km sw of merizo village, guam
  40. USGS-USP000C0RC2003-06-23 → 2003-06-26
    291 km se of attu station, alaska
  41. USGS-USP000BZYD2003-06-15 → 2003-06-18
    293 km ese of attu station, alaska
  42. USGS-USP000BZ2C2003-06-04 → 2003-06-07
    Earthquake magnitude 5.8 (mwb) in 8.374N 103.069W, depth 10 km at 041628Z jun 03
    Northern East Pacific Rise
  43. USGS-USP000BYRP2003-06-01 → 2003-06-04
    Earthquake magnitude 5.6 (mwb) in 28.197N 142.773E, depth 10 km at 011750Z jun 03
    Bonin Islands, Japan Region
  44. USGS-USP000BY7N2003-05-26 → 2003-05-29
    116 km ne of tobelo, indonesia
  45. USGS-USP000BY662003-05-26 → 2003-05-29
    27 km ssw of ?funato, japan
  46. USGS-USP000BXY92003-05-23 → 2003-05-26
    261 km s of punta de burica, panama
  47. USGS-USP000BXHK2003-05-19 → 2003-05-22
    201 km ssw of barra de navidad, mexico
  48. USGS-USP000BWBA2003-05-01 → 2003-05-04
    Earthquake magnitude 5.5 (mwc) in 17.729N 147.751E, depth 48 km at 010014Z may 03
    Mariana Islands Region
  49. USGS-USP000BW7F2003-04-29 → 2003-05-02
    87 km e of shikotan, russia
  50. USGS-USP000BVVM2003-04-24 → 2003-04-27
    227 km ssw of severo-kuril’sk, russia

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 40 · seahazards