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
    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 · 2,412 cancelled

  1. USGS-USP0009AXX1999-07-02 → 1999-07-05
    203 km sw of port mcneill, canada
  2. USGS-USP0009ACR1999-06-23 → 1999-06-26
    Earthquake magnitude 5.6 (mwc) in 19.279N 145.575E, depth 103 km at 231937Z jun 99
    Maug Islands Region, Northern Mariana Islands
  3. USGS-USP0009A8H1999-06-21 → 1999-06-24
    190 km sse of fais, micronesia
  4. USGS-USP00099CU1999-06-06 → 1999-06-09
    6 km ese of puerto san josé, guatemala
  5. USGS-USP000998Y1999-06-04 → 1999-06-07
    116 km ese of akutan, alaska
  6. USGS-USP00097V11999-05-12 → 1999-05-15
    44 km w of kushiro, japan
  7. USGS-USP00097MC1999-05-08 → 1999-05-11
    9 km ssw of champerico, guatemala
  8. USGS-USP00097M31999-05-08 → 1999-05-11
    295 km e of kuril’sk, russia
  9. USGS-USP00097DR1999-05-05 → 1999-05-08
    197 km sw of manuel ávila camacho (ponte duro), mexico
  10. USGS-USP00096SP1999-04-23 → 1999-04-26
    45 km ese of inarajan village, guam
  11. USGS-HV12513791999-04-17 → 1999-04-20
    5 km n of p?hala, hawaii
  12. USGS-USP00095QJ1999-04-03 → 1999-04-06
    13 km s of amapala, honduras
  13. USGS-USP00095HD1999-03-31 → 1999-04-03
    245 km s of punta de burica, panama
  14. USGS-USP00094RA1999-03-18 → 1999-03-21
    140 km ene of hachinohe, japan
  15. USGS-USP00094G31999-03-14 → 1999-03-17
    176 km sw of merizo village, guam
  16. USGS-USP000943C1999-03-08 → 1999-03-11
    123 km se of vilyuchinsk, russia
  17. USGS-USP000942C1999-03-08 → 1999-03-11
    117 km se of vilyuchinsk, russia
  18. USGS-USP000942A1999-03-08 → 1999-03-11
    115 km se of vilyuchinsk, russia
  19. USGS-USP00093QD1999-03-02 → 1999-03-05
    84 km e of hasaki, japan
  20. USGS-USP00093B31999-02-24 → 1999-02-27
    Earthquake magnitude 5.8 (mwb) in 18.053N 146.523E, depth 33 km at 240518Z feb 99
    Pagan Region, Northern Mariana Islands
  21. USGS-USP00093391999-02-20 → 1999-02-23
    Earthquake magnitude 5.5 (mwc) in 35.510N 141.818E, depth 33 km at 200158Z feb 99
    Near the East Coast of Honshu, Japan
  22. USGS-USP00092Q21999-02-12 → 1999-02-15
    165 km ese of kuril’sk, russia
  23. USGS-USP000921B1999-01-31 → 1999-02-03
    42 km sse of shikotan, russia
  24. USGS-USP00091T41999-01-27 → 1999-01-30
    147 km s of punta de burica, panama
  25. USGS-USP00091FU1999-01-21 → 1999-01-24
    113 km ese of ?funato, japan
  26. USGS-USP000917V1999-01-17 → 1999-01-20
    76 km ese of yigo village, guam
  27. USGS-USP000916E1999-01-16 → 1999-01-19
    Earthquake magnitude 6.0 (mwc) in 56.233N 147.427W, depth 21 km at 161044Z jan 99
    Gulf of Alaska
  28. USGS-USP00090XV1999-01-11 → 1999-01-14
    117 km sse of petropavlovsk-kamchatsky, russia
  29. USGS-USP00090NH1999-01-05 → 1999-01-08
    297 km ese of attu station, alaska
  30. USGS-USP00090KX1999-01-04 → 1999-01-07
    23 km sse of jaqué, panama
  31. USGS-USP0008Z691998-12-05 → 1998-12-08
    98 km ssw of nikolski, alaska
  32. USGS-USP0008YB01998-11-17 → 1998-11-20
    41 km sse of punta de burica, panama
  33. USGS-USP0008Y1R1998-11-11 → 1998-11-14
    Earthquake magnitude 5.7 (mwc) in 1.079N 085.275W, depth 33 km at 112336Z nov 98
    Off the Coast of Ecuador
  34. USGS-USP0008X4W1998-10-27 → 1998-10-30
    209 km sse of katsuura, japan
  35. USGS-USP0008WP21998-10-17 → 1998-10-20
    136 km s of false pass, alaska
  36. USGS-USP0008WFZ1998-10-13 → 1998-10-16
    123 km ene of miyako, japan
  37. USGS-USP0008W8U1998-10-09 → 1998-10-12
    51 km s of el rosario, nicaragua
  38. USGS-USP0008VB91998-09-22 → 1998-09-25
    229 km sw of merizo village, guam
  39. USGS-USP0008UY01998-09-14 → 1998-09-17
    96 km se of atka, alaska
  40. USGS-USP0008U3U1998-08-30 → 1998-09-02
    225 km ene of petropavlovsk-kamchatsky, russia
  41. USGS-USP0008U3N1998-08-30 → 1998-09-02
    254 km w of port mcneill, canada
  42. USGS-USP0008U2T1998-08-30 → 1998-09-02
    Earthquake magnitude 6.3 (mwc) in 17.092N 148.133E, depth 33 km at 300148Z aug 98
    Mariana Islands Region
  43. USGS-USP0008TRH1998-08-23 → 1998-08-26
    130 km sw of corinto, nicaragua
  44. USGS-USP0008TPR1998-08-22 → 1998-08-25
    Earthquake magnitude 5.5 (mwc) in 18.655N 146.428E, depth 57 km at 221232Z aug 98
    Pagan Region, Northern Mariana Islands
  45. USGS-USP0008TK41998-08-20 → 1998-08-23
    196 km se of attu station, alaska
  46. NAVAREA XII 241/981998-08-04 → 1999-08-01
    Tsunami instrument mooring buoys, orange with white disk, fl w 20 sec, established until 31 jul 1999 as…
  47. USGS-USP0008RKS1998-07-16 → 1998-07-19
    206 km sw of merizo village, guam
  48. USGS-USP0008RC81998-07-12 → 1998-07-15
    10 km ssw of el papayo, mexico
  49. USGS-USP0008RAH1998-07-11 → 1998-07-14
    18 km ssw of petatlán, mexico
  50. USGS-USP0008QAK1998-06-22 → 1998-06-25
    102 km ssw of merizo village, guam

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 46 · seahazards