J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2020-08-01 02:04:26 Near the coast of Okinawa     10 52  
2020-08-04 23:03:05 Off the coast of Fukushima     60 3.62  
2020-08-06 03:53:04 Off the coast of Ibaraki     20 3.52  
2020-08-07 00:34:41 Off the southeast coast of Mie     400 5.6Unkn 
2020-08-08 17:37:00 Off the coast of Ibaraki     30 4.22  
2020-08-08 20:54:55 Near the coast of Amami Oshima     50 4.43  
2020-08-08 23:13:11 Off the coast of Uraga     20 3.51  
2020-08-09 14:30:29 Off the coast of Fukushima     40 3.62  
2020-08-09 16:04:06 Near the coast of Okinawa     70 3.72  
2020-08-10 14:32:09 Near Etorofu-to     190 3.8Unkn 
2020-08-10 21:15:23 Off the coast of Tokachi     70 3.81  
2020-08-12 08:07:23 Near the coast of Yonagunijima     20 4.52  
2020-08-12 19:02:55 Near Kunashir     130 3.82  
2020-08-13 08:23:51 Central Sea of Japan     420 3.9Unkn 
2020-08-13 08:31:55 Off the east coast of Aomori     10 3.92  
2020-08-13 11:35:33 Off the east coast of Chiba     50 4.43  
2020-08-13 12:52:40 Off the east coast of Chiba     50 3.92  
2020-08-17 02:56:06 Kii Channel     10 3.32  
2020-08-19 09:17:14 Near the coast of Tokara Islands     10 4.8Unkn 
2020-08-20 07:37:42 Off the south coast of Tokaido     330 3.8Unkn 
2020-08-20 09:28:23 Off the east coast of Chiba     20 4.43  
2020-08-21 04:51:40 Off the coast of Kushiro     50 4.63  
2020-08-25 13:40:39 Near the coast of Torishima     320 4.3Unkn 
2020-08-25 14:28:50 Off the coast of Miyagi     40 3.62  
2020-08-27 07:15:02 Off the northwest coast of Ishigaki Island     190 4.8Unkn 
2020-08-27 09:48:42 Off the coast of Miyagi     40 3.82  
2020-08-27 12:41:52 Off the coast of Kushiro     60 3.72  
2020-08-27 17:08:21 Off the coast of Ibaraki     10 3.71  
2020-08-27 23:45:44 Off the coast of Ibaraki     50 4.23  
2020-08-28 03:20:17 Off the coast of Iwate     50 4.13  
2020-08-29 20:55:37 Off the coast of Kushiro     50 4.32  
2020-08-30 17:59:31 Off the coast of Ibaraki     100 3.52  
2020-08-31 06:00:45 Near the coast of Okinawa     30 42  
Archive Earthquake Data
  JMA (final quake data) EEW (preliminary reports)
2011 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2012 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2013 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2014 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2015 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2016 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2017 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2018 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2019 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2020 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2021 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2022 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2023 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7
2024 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All 4 to 7

Information provided by the Japan Meteorological Agency.
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