8 Dec 2025: Tsunami Alert Issued for NE Japan

A magnitude-7.6 earthquake off the coast of Aomori Prefecture has triggered a tsunami warning. Early reports of 40cm waves, tsunamis up to 3m possible latest updates

All Wave Buoys | 6 hr Intervals | Hourly

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Greenwich Buoy 6 Day Wave Buoy Record

Thu
 04
10PM
Fri
 05
4AM
Fri
 05
10AM
Fri
 05
4PM
Fri
 05
10PM
Sat
 06
4AM
Sat
 06
10AM
Sat
 06
4PM
Sat
 06
10PM
Sun
 07
4AM
Sun
 07
10AM
Sun
 07
4PM
Sun
 07
10PM
Mon
 08
4AM
Mon
 08
10AM
Mon
 08
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Mon
 08
10PM
Tue
 09
4AM
Data Age 102 hr 96 hr 90 hr 84 hr 78 hr 72 hr 66 hr 60 hr 54 hr 48 hr 42 hr 36 hr 30 hr 24 hr 18 hr 12 hr 6 hr 0 hr
Wave height (m) & direction (?) 1.5
0.5
1.1
1.7
3.2
1.9
3.0
2.6
3.0
1.4
1.6
2.0
2.7
1.2
0.9
1.2
1.1
-
Dominant period (s) (?) - - - - - - - - - - - - - - - - - -
Average period (s) (?) 7 7 9 6 7 6 7 8 8 7 7 7 7 7 7 6 9 -
Wave
Graph

(?)
Wind
(kph)
25
20
35
65
70
50
60
55
45
35
45
60
35
30
40
40
40
Water Temp. °C 12.4 12.2 12.3 12.4 12.4 12.6 12.6 12.8 12.7 12.8 12.8 12.9 12.9 12.8 12.9 12.9 12.8 -
Show advanced wave information
Swell1 (m) & direction -
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Period (s) - - - - - - - - - - - - - - - - - -
Swell2 (m) & direction -
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
-
-
-
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Period (s) - - - - - - - - - - - - - - - - - -
Wave
Graph
(?)
  Thu
 04
10PM
Fri
 05
4AM
Fri
 05
10AM
Fri
 05
4PM
Fri
 05
10PM
Sat
 06
4AM
Sat
 06
10AM
Sat
 06
4PM
Sat
 06
10PM
Sun
 07
4AM
Sun
 07
10AM
Sun
 07
4PM
Sun
 07
10PM
Mon
 08
4AM
Mon
 08
10AM
Mon
 08
4PM
Mon
 08
10PM
Tue
 09
4AM
Show general weather
Mean Pressure at Sea Level 1003.1 1007.1 1007.9 1003.0 996.1 996.1 998.1 1002.2 1004.4 1004.6 1002.2 1001.4 1006.9 1008.4 1010.5 1011.6 1011.2 -
Temp. °C 9.2 9.8 11.1 10.2 10.6 11.9 12.8 13.6 13.6 13.0 14.0 14.7 14.2 13.8 14.5 13.9 14.3 -
  Thu
 04
10PM
Fri
 05
4AM
Fri
 05
10AM
Fri
 05
4PM
Fri
 05
10PM
Sat
 06
4AM
Sat
 06
10AM
Sat
 06
4PM
Sat
 06
10PM
Sun
 07
4AM
Sun
 07
10AM
Sun
 07
4PM
Sun
 07
10PM
Mon
 08
4AM
Mon
 08
10AM
Mon
 08
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Mon
 08
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Tue
 09
4AM

24 closest surf breaks to Greenwich Buoy:

1. Birling Gap (41 km NNE) 7. South Lancing (52 km NNE) 13. Bracklesham (73 km ENE) 19. Vaucottes (77 km SSE)
2. Brighton (45 km N) 8. Bexhill (59 km NE) 14. East Wittering (75 km ENE) 20. West Wittering (77 km ENE)
3. Eastbourne (46 km NNE) 9. Littlehampton (59 km NE) 15. Le Petits Dalles (75 km SSE) 21. Etretat (78 km S)
4. Hot pipe (50 km NNE) 10. Stamco (63 km NE) 16. Fecamp (76 km SSE) 22. Veules Les Roses (81 km SE)
5. Portslade (50 km NNE) 11. Hastings (66 km NE) 17. Pourville (76 km SE) 23. Camber Sands (82 km NE)
6. Shoreham (51 km NNE) 12. Fairlight (71 km NE) 18. Yport (76 km SSE) 24. Hayling Island (82 km ENE)
Nearest locationNearest
Nearest locationNearest
Nearest locationNearest