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
137
vs previous 12 (141)
-3%
since 1997
2,416

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
    An earthquake of magnitude 5.5 occurred 156 km east of Kuril'sk, Russia, at a depth of 36 km on September 26.
  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
    An earthquake of magnitude 5.5 occurred 156 km east of Kuril'sk, Russia, at a depth of 36 km on September 26.

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 · 2,412 cancelled

  1. USGS-USP0008PWR1998-06-14 → 1998-06-17
    18 km ne of ?hara, japan
  2. USGS-USP0008PHB1998-06-07 → 1998-06-10
    2 km nne of cabeza de toro, mexico
  3. USGS-USP0008P471998-06-01 → 1998-06-04
    96 km e of petropavlovsk-kamchatsky, russia
  4. USGS-USP0008P151998-05-30 → 1998-06-02
    137 km ese of yamada, japan
  5. USGS-USP0008NUF1998-05-28 → 1998-05-31
    119 km sse of petropavlovsk-kamchatsky, russia
  6. USGS-USP0008NTH1998-05-27 → 1998-05-30
    107 km sse of petropavlovsk-kamchatsky, russia
  7. USGS-USP0008N2X1998-05-15 → 1998-05-18
    147 km sw of merizo village, guam
  8. USGS-USP0008N2D1998-05-14 → 1998-05-17
    130 km ene of miyako, japan
  9. USGS-USP0008N1N1998-05-14 → 1998-05-17
    131 km ene of miyako, japan
  10. USGS-USP0008MXF1998-05-12 → 1998-05-15
    20 km wsw of puerto san josé, guatemala
  11. USGS-USP0008MVD1998-05-11 → 1998-05-14
    Earthquake magnitude 5.8 (mwc) in 8.242N 102.987W, depth 10 km at 110134Z may 98
    Northern East Pacific Rise
  12. USGS-USP0008MTF1998-05-10 → 1998-05-13
    Earthquake magnitude 5.8 (mwc) in 8.520N 102.924W, depth 10 km at 100635Z may 98
    Northern East Pacific Rise
  13. USGS-USP0008MT91998-05-10 → 1998-05-13
    28 km s of iztapa, guatemala
  14. USGS-USP0008M581998-04-29 → 1998-05-02
    Earthquake magnitude 5.6 (mwc) in 30.781N 141.963E, depth 33 km at 292332Z apr 98
    Izu Islands, Japan Region
  15. USGS-USP0008JSU1998-04-09 → 1998-04-12
    15 km ssw of iwaki, japan
  16. USGS-USP0008JPT1998-04-07 → 1998-04-10
    25 km ssw of san lorenzo, guatemala
  17. USGS-USP0008HWC1998-03-23 → 1998-03-26
    44 km e of ?arai, japan
  18. USGS-USP0008HPE1998-03-19 → 1998-03-22
    245 km ne of fais, micronesia
  19. USGS-USP0008HDH1998-03-13 → 1998-03-16
    64 km sw of puerto madero, mexico
  20. USGS-USP0008GV31998-03-03 → 1998-03-06
    9 km ssw of san josé el ídolo, guatemala
  21. USGS-USP0008GHS1998-02-24 → 1998-02-27
    278 km ese of attu station, alaska
  22. USGS-USP0008G641998-02-18 → 1998-02-21
    157 km ssw of severo-kuril’sk, russia
  23. USGS-USP0008FKE1998-02-07 → 1998-02-10
    Earthquake magnitude 6.4 (mwc) in 24.821N 141.746E, depth 525 km at 070118Z feb 98
    Volcano Islands, Japan Region
  24. USGS-USP0008FKD1998-02-07 → 1998-02-10
    Earthquake magnitude 5.9 (mwc) in 24.787N 141.752E, depth 526 km at 070113Z feb 98
    Volcano Islands, Japan Region
  25. USGS-USP0008FBV1998-02-03 → 1998-02-06
    2 km e of benito juárez, mexico
  26. USGS-USP0008F7G1998-01-30 → 1998-02-02
    70 km ene of mutsu, japan
  27. USGS-USP0008F6X1998-01-30 → 1998-02-02
    Earthquake magnitude 5.5 (mwc) in 21.687N 145.471E, depth 37 km at 300849Z jan 98
    Mariana Islands Region
  28. USGS-USP0008F291998-01-27 → 1998-01-30
    188 km se of ust’-kamchatsk staryy, russia
  29. USGS-USP0008EUQ1998-01-23 → 1998-01-26
    64 km sse of nikolski, alaska
  30. USGS-USP0008EQF1998-01-20 → 1998-01-23
    17 km e of shikotan, russia
  31. USGS-USP0008EGV1998-01-17 → 1998-01-20
    Earthquake magnitude 5.7 (mwc) in 45.855N 152.326E, depth 72 km at 171039Z jan 98
    East of the Kuril Islands
  32. USGS-USP0008E1G1998-01-10 → 1998-01-13
    10 km ssw of san josé el ídolo, guatemala
  33. USGS-USP0008DQ41998-01-03 → 1998-01-06
    85 km sw of false pass, alaska
  34. USGS-USP0008D8U1997-12-26 → 1997-12-29
    Earthquake magnitude 5.6 (mwc) in 51.310N 178.802E, depth 33 km at 262118Z dec 97
    Rat Islands, Aleutian Islands, Alaska
  35. USGS-USP0008D6U1997-12-25 → 1997-12-28
    41 km ssw of ocós, guatemala
  36. USGS-USP0008D161997-12-22 → 1997-12-25
    28 km ssw of pasaco, guatemala
  37. USGS-USP0008CSW1997-12-17 → 1997-12-20
    Earthquake magnitude 5.5 (mwc) in 51.212N 178.990E, depth 33 km at 171145Z dec 97
    Rat Islands, Aleutian Islands, Alaska
  38. USGS-USP0008CS81997-12-17 → 1997-12-20
    Earthquake magnitude 6.6 (mwc) in 51.187N 178.871E, depth 20 km at 170438Z dec 97
    Rat Islands, Aleutian Islands, Alaska
  39. USGS-USP0008CRC1997-12-16 → 1997-12-19
    46 km ssw of barra de tecoanapa, mexico
  40. USGS-USP0008C9V1997-12-08 → 1997-12-11
    226 km ese of mil’kovo, russia
  41. USGS-USP0008C7N1997-12-07 → 1997-12-10
    228 km ene of petropavlovsk-kamchatsky, russia
  42. USGS-USP0008C761997-12-07 → 1997-12-10
    176 km s of ust’-kamchatsk staryy, russia
  43. USGS-USP0008C2P1997-12-06 → 1997-12-09
    147 km s of ust’-kamchatsk staryy, russia
  44. USGS-USP0008C2B1997-12-06 → 1997-12-09
    228 km ese of mil’kovo, russia
  45. USGS-USP0008C221997-12-06 → 1997-12-09
    230 km ese of mil’kovo, russia
  46. USGS-USP0008C131997-12-06 → 1997-12-09
    154 km se of atlasovo, russia
  47. USGS-USP0008C121997-12-06 → 1997-12-09
    156 km s of ust’-kamchatsk staryy, russia
  48. USGS-USP0008BZF1997-12-06 → 1997-12-09
    208 km ene of petropavlovsk-kamchatsky, russia
  49. USGS-USP0008BXB1997-12-05 → 1997-12-08
    212 km ene of petropavlovsk-kamchatsky, russia
  50. USGS-USP0008BX51997-12-05 → 1997-12-08
    220 km ene of petropavlovsk-kamchatsky, 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 47 · seahazards