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
135
vs previous 12 (140)
-4%
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-US2000J5SX2019-01-18 → 2019-01-21
    Earthquake magnitude 5.9 (mww) in 8.430N 103.228W, depth 10 km at 181640Z jan 19
    Northern East Pacific Rise
  2. USGS-US2000J0N02019-01-05 → 2019-01-08
    Earthquake magnitude 5.7 (mww) in 25.823N 144.569E, depth 14 km at 052254Z jan 19
    Volcano Islands, Japan Region
  3. USGS-US2000J0IW2019-01-05 → 2019-01-08
    Earthquake magnitude 5.9 (mww) in 51.335N 178.118W, depth 30 km at 051847Z jan 19
    Andreanof Islands, Aleutian Islands, Alaska
  4. USGS-US2000IZCV2018-12-31 → 2019-01-03
    87 km se of king cove, alaska
  5. USGS-US2000IX3Y2018-12-24 → 2018-12-27
    161 km se of ust’-kamchatsk staryy, russia
  6. USGS-US2000IWX02018-12-24 → 2018-12-27
    169 km se of katsuura, japan
  7. USGS-US2000IWWP2018-12-24 → 2018-12-27
    174 km se of katsuura, japan
  8. USGS-US2000IWA72018-12-22 → 2018-12-25
    177 km se of ust’-kamchatsk staryy, russia
  9. USGS-US2000IW0E2018-12-21 → 2018-12-24
    164 km se of ust’-kamchatsk staryy, russia
  10. USGS-US2000IVGX2018-12-20 → 2018-12-23
    207 km se of ust’-kamchatsk staryy, russia
  11. HYDROPAC 4533/182018-12-20 → 2018-12-20
    Earthquake with a preliminary magnitude of 7.3 has occurred in vicinity 54-49N 164-48E
    North Pacific · Bering Sea · Russia
  12. USGS-US2000IVGE2018-12-20 → 2018-12-23
    189 km se of ust’-kamchatsk staryy, russia
  13. USGS-US2000J1RT2018-12-20 → 2018-12-23
    Earthquake magnitude 5.9 (mb) in 54.900N 164.772E, depth 10 km at 201709Z dec 18
    Komandorskiye Ostrova, Russia Region
  14. USGS-US2000IVFW2018-12-20 → 2018-12-23
    187 km se of ust’-kamchatsk staryy, russia
  15. USGS-US1000HWXU2018-11-27 → 2018-11-30
    Earthquake magnitude 5.6 (mww) in 19.373N 108.351W, depth 10 km at 270537Z nov 18
    Revilla Gigedo Islands Region
  16. USGS-US1000HRV12018-11-14 → 2018-11-17
    71 km ssw of ust’-kamchatsk staryy, russia
  17. USGS-US1000HIB52018-10-28 → 2018-10-31
    85 km sw of acajutla, el salvador
  18. USGS-US1000HHGS2018-10-26 → 2018-10-29
    Earthquake magnitude 5.9 (mww) in 17.406N 147.881E, depth 8 km at 260905Z oct 18
    Mariana Islands Region
  19. USGS-US1000HH6R2018-10-25 → 2018-10-28
    43 km ese of ishinomaki, japan
  20. USGS-US1000HFH32018-10-22 → 2018-10-25
    237 km sw of port mcneill, canada
  21. USGS-US1000HFGV2018-10-22 → 2018-10-25
    210 km sw of port mcneill, canada
  22. USGS-US1000HFGN2018-10-22 → 2018-10-25
    223 km sw of port mcneill, canada
  23. USGS-US1000HBCU2018-10-12 → 2018-10-15
    11 km e of nueva concepción, guatemala
  24. USGS-US1000HCXA2018-10-10 → 2018-10-13
    164 km s of severo-kuril’sk, russia
  25. USGS-US1000HACW2018-10-10 → 2018-10-13
    154 km s of severo-kuril’sk, russia
  26. USGS-US1000H97J2018-10-09 → 2018-10-12
    142 km s of severo-kuril’sk, russia
  27. USGS-US2000HIWB2018-09-23 → 2018-09-26
    199 km se of inarajan village, guam
  28. USGS-US2000HI482018-09-21 → 2018-09-24
    Earthquake magnitude 5.6 (mww) in 2.419N 095.449W, depth 10 km at 211249Z sep 18
    Galapagos Islands, Ecuador Region
  29. USGS-US2000H8TY2018-09-05 → 2018-09-08
    27 km ese of chitose, japan
  30. USGS-US2000H7E02018-09-03 → 2018-09-06
    Earthquake magnitude 5.9 (mww) in 1.439N 085.261W, depth 10 km at 032337Z sep 18
    Off the Coast of Ecuador
  31. USGS-US1000GJ782018-08-28 → 2018-08-31
    211 km nne of saipan, northern mariana islands
  32. USGS-US1000GH9X2018-08-25 → 2018-08-28
    180 km wsw of nikolski, alaska
  33. USGS-US1000GFVG2018-08-23 → 2018-08-26
    97 km sw of adak, alaska
  34. USGS-US1000GF8U2018-08-22 → 2018-08-25
    272 km w of bandon, oregon
  35. USGS-US1000GC0K2018-08-17 → 2018-08-20
    19 km nnw of golfito, costa rica
  36. USGS-US1000GBZ12018-08-17 → 2018-08-20
    Earthquake magnitude 5.6 (mww) in 23.479N 143.329E, depth 18 km at 172206Z aug 18
    Volcano Islands, Japan Region
  37. USGS-US1000GAQV2018-08-16 → 2018-08-19
    Earthquake magnitude 6.3 (mww) in 23.423N 143.319E, depth 20 km at 161822Z aug 18
    Volcano Islands, Japan Region
  38. USGS-US1000GAQF2018-08-16 → 2018-08-19
    Earthquake magnitude 5.8 (mwb) in 23.352N 143.395E, depth 11 km at 161821Z aug 18
    Volcano Islands, Japan Region
  39. USGS-US1000GA0Z2018-08-15 → 2018-08-18
    108 km wsw of adak, alaska
  40. USGS-US1000G6HL2018-08-10 → 2018-08-13
    261 km ssw of severo-kuril’sk, russia
  41. USGS-US1000G60S2018-08-09 → 2018-08-12
    59 km sw of puerto san josé, guatemala
  42. USGS-US1000G4TH2018-08-07 → 2018-08-10
    242 km ese of ?funato, japan
  43. USGS-US2000GI032018-07-31 → 2018-08-03
    23 km ne of iwaki, japan
  44. USGS-US2000GCPA2018-07-24 → 2018-07-27
    210 km wsw of pistol river, oregon
  45. USGS-US2000GAA32018-07-20 → 2018-07-23
    Earthquake magnitude 5.6 (mww) in 18.450N 145.993E, depth 121 km at 202356Z jul 18
    Pagan Region, Northern Mariana Islands
  46. USGS-US2000G8TR2018-07-19 → 2018-07-22
    101 km s of sand point, alaska
  47. USGS-US2000G83V2018-07-18 → 2018-07-21
    103 km s of sand point, alaska
  48. USGS-US2000FZ0Q2018-07-07 → 2018-07-10
    27 km se of ?hara, japan
  49. USGS-US2000FXYZ2018-07-06 → 2018-07-09
    93 km e of ozernovskiy, russia
  50. USGS-US2000FRWR2018-06-30 → 2018-07-03
    43 km ssw of emiliano zapata, mexico

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.