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-USP000HNZP2010-11-04 → 2010-11-07
    71 km s of adak, alaska
  2. USGS-USP000HNPE2010-10-28 → 2010-10-31
    124 km e of la playa, mexico
  3. USGS-USP000HN3M2010-10-14 → 2010-10-17
    41 km e of shizunai-furukawach?, japan
  4. USGS-USP000HMXQ2010-10-10 → 2010-10-13
    107 km ese of adak, alaska
  5. USGS-USP000HMS52010-10-08 → 2010-10-11
    115 km ese of adak, alaska
  6. USGS-USP000HMRK2010-10-08 → 2010-10-11
    120 km ese of adak, alaska
  7. USGS-USP000HMRB2010-10-08 → 2010-10-11
    104 km ese of adak, alaska
  8. USGS-USP000HKQT2010-09-14 → 2010-09-17
    60 km wsw of villa juárez, mexico
  9. USGS-USP000HKNJ2010-09-13 → 2010-09-16
    68 km ene of mutsu, japan
  10. USGS-USP000HKFB2010-09-08 → 2010-09-11
    162 km ese of kuril’sk, russia
  11. USGS-USP000HK3K2010-09-03 → 2010-09-06
    70 km se of adak, alaska
  12. USGS-USP000HJVQ2010-08-28 → 2010-08-31
    223 km sw of la cruz de loreto, mexico
  13. USGS-USP000HJP22010-08-24 → 2010-08-27
    226 km sw of la cruz de loreto, mexico
  14. USGS-USP000HJM22010-08-22 → 2010-08-25
    Earthquake magnitude 5.6 (mwc) in 19.441N 147.374E, depth 26 km at 220933Z aug 10
    Mariana Islands Region
  15. USGS-USP000HJFS2010-08-19 → 2010-08-22
    9 km sw of la gomera, guatemala
  16. USGS-USP000HJ752010-08-15 → 2010-08-18
    113 km ene of petropavlovsk-kamchatsky, russia
  17. USGS-USP000HHUE2010-08-10 → 2010-08-13
    103 km e of yamada, japan
  18. USGS-USP000HHRX2010-08-08 → 2010-08-11
    146 km wsw of adak, alaska
  19. USGS-USP000HHJ52010-08-04 → 2010-08-07
    Earthquake magnitude 6.0 (mwc) in 45.980N 153.175E, depth 28 km at 042348Z aug 10
    East of the Kuril Islands
  20. USGS-USP000HHG72010-08-04 → 2010-08-07
    148 km wsw of adak, alaska
  21. USGS-USP000HH4N2010-07-30 → 2010-08-02
    100 km se of petropavlovsk-kamchatsky, russia
  22. USGS-USP000HGYX2010-07-28 → 2010-07-31
    Earthquake magnitude 5.6 (mwc) in 52.667N 169.408W, depth 10 km at 281131Z jul 10
    Fox Islands, Aleutian Islands, Alaska
  23. USGS-USP000HFUS2010-07-19 → 2010-07-22
    53 km wsw of nikolski, alaska
  24. USGS-USP000HFUQ2010-07-19 → 2010-07-22
    44 km sw of nikolski, alaska
  25. USGS-USP000HF3T2010-07-10 → 2010-07-13
    272 km sse of inarajan village, guam
  26. USGS-USP000HEWW2010-07-04 → 2010-07-07
    37 km e of miyako, japan
  27. USGS-USP000HEQJ2010-06-30 → 2010-07-03
    2 km ese of san agustín chayuco, mexico
  28. USGS-USP000HEPK2010-06-29 → 2010-07-02
    298 km ssw of severo-kuril’sk, russia
  29. USGS-USP000HEN82010-06-28 → 2010-07-01
    Earthquake magnitude 5.8 (mwc) in 30.672N 141.593E, depth 7 km at 281207Z jun 10
    Izu Islands, Japan Region
  30. USGS-USP000HE7R2010-06-18 → 2010-06-21
    107 km se of kuril’sk, russia
  31. USGS-USP000HDX32010-06-13 → 2010-06-16
    Earthquake magnitude 5.9 (mwc) in 37.372N 141.625E, depth 27 km at 130332Z jun 10
    Near the East Coast of Honshu, Japan
  32. USGS-USP000HDUU2010-06-11 → 2010-06-14
    Earthquake magnitude 5.5 (mwc) in 26.712N 142.688E, depth 10 km at 111658Z jun 10
    Bonin Islands, Japan Region
  33. USGS-USP000HDUT2010-06-11 → 2010-06-14
    Earthquake magnitude 5.7 (mwb) in 26.688N 142.503E, depth 7 km at 111637Z jun 10
    Bonin Islands, Japan Region
  34. USGS-USP000HDM12010-06-05 → 2010-06-08
    41 km s of shikotan, russia
  35. USGS-USP000HDEM2010-06-01 → 2010-06-04
    12 km ssw of quepos, costa rica
  36. USGS-USP000HCZT2010-05-20 → 2010-05-23
    25 km sw of quepos, costa rica
  37. USGS-USP000HCF02010-05-07 → 2010-05-10
    Earthquake magnitude 5.5 (mwb) in 44.362N 129.467W, depth 10 km at 071746Z may 10
    Off the Coast of Oregon
  38. USGS-USP000HC922010-05-03 → 2010-05-06
    218 km se of akutan, alaska
  39. USGS-USP000HBM32010-04-18 → 2010-04-21
    18 km sw of flores costa cuca, guatemala
  40. USGS-USP000HBJK2010-04-17 → 2010-04-20
    34 km wsw of masachapa, nicaragua
  41. USGS-USP000HBFK2010-04-16 → 2010-04-19
    100 km ssw of sand point, alaska
  42. USGS-USP000H9CG2010-03-14 → 2010-03-17
    59 km ene of namie, japan
  43. USGS-USP000H9AP2010-03-13 → 2010-03-16
    29 km ene of namie, japan
  44. USGS-USP000H99T2010-03-13 → 2010-03-16
    229 km ese of tobi village, palau
  45. USGS-USP000H90K2010-03-09 → 2010-03-12
    91 km sse of atka, alaska
  46. USGS-USP000H8U82010-03-06 → 2010-03-09
    85 km ene of shikotan, russia
  47. USGS-USP000H85W2010-02-28 → 2010-03-03
    108 km ese of ?hara, japan
  48. USGS-USP000H7NP2010-02-25 → 2010-02-28
    Earthquake magnitude 5.7 (mwc) in 11.176N 086.126W, depth 25 km at 250315Z feb 10
    Near the Coast of Nicaragua
  49. USGS-USP000H73D2010-02-09 → 2010-02-12
    8 km e of santa maría colotepec, mexico
  50. USGS-USP000H7052010-02-06 → 2010-02-09
    Earthquake magnitude 6.0 (mwc) in 46.836N 152.731E, depth 30 km at 060444Z feb 10
    Kuril Islands

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 30 · seahazards