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-USP0007ZEA1997-03-26 → 1997-03-29
    273 km wsw of adak, alaska
  2. USGS-USP0007Y081997-02-28 → 1997-03-03
    93 km e of shikotan, russia
  3. USGS-USP0007XMC1997-02-21 → 1997-02-24
    186 km sse of kuril’sk, russia
  4. USGS-USP0007XHE1997-02-20 → 1997-02-23
    61 km sse of shizunai-furukawach?, japan
  5. USGS-USP0007XGQ1997-02-19 → 1997-02-22
    Earthquake magnitude 5.5 (mwc) in 37.403N 141.065E, depth 84 km at 192021Z feb 97
    Near the East Coast of Honshu, Japan
  6. USGS-USP0007X441997-02-12 → 1997-02-15
    152 km sw of attu station, alaska
  7. USGS-USP0007X071997-02-09 → 1997-02-12
    115 km ssw of ust’-kamchatsk staryy, russia
  8. USGS-NC4920791997-01-22 → 1997-01-25
    33 km sw of scotia, california
  9. USGS-USP0007W6C1997-01-21 → 1997-01-24
    3 km e of san miguel tlacamama, mexico
  10. USGS-USP0007VYB1997-01-16 → 1997-01-19
    33 km wnw of el habillal, mexico
  11. USGS-USP0007VTY1997-01-13 → 1997-01-16
    235 km ne of saipan, northern mariana islands
  12. USGS-USP0007VRX1997-01-11 → 1997-01-14
    46 km wnw of el habillal, 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.

Earthquake & tsunami bulletins in the North Pacific Ocean — page 49 · seahazards