J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2021-08-01 12:18:39 Near the coast of Miyakojima     30 3.52  
2021-08-01 16:53:19 Near the coast of Okinawa     30 4.43  
2021-08-01 22:50:29 Off the south coast of the Boso Peninsula     120 3.51  
2021-08-02 12:28:39 Off the southeast coast of Iturup     40 5.92  
2021-08-02 16:43:02 Off the southeast coast of Nemuro Peninsula     50 3.72  
2021-08-02 17:24:19 Off the east coast of Chiba     10 3.63  
2021-08-03 00:35:31 Off the coast of Ibaraki     10 4.52  
2021-08-03 10:48:03 Off the coast of Fukushima     10 3.41  
2021-08-03 15:02:53 Off the coast of Ibaraki     20 3.71  
2021-08-03 16:28:25 Off the coast of Ibaraki     20 3.71  
2021-08-03 19:29:17 Off the coast of Ibaraki     10 5.13  
2021-08-03 20:16:48 Off the coast of Ibaraki     10 3.82  
2021-08-03 21:37:56 Off the coast of Fukushima     70 3.82  
2021-08-03 22:20:18 Off the coast of Fukushima     30 4.62  
2021-08-04 05:33:35 Off the coast of Ibaraki     10 5.94  
2021-08-04 05:39:03 Off the coast of Ibaraki     10 5.23  
2021-08-04 05:42:49 Off the coast of Ibaraki     10 5.43  
2021-08-04 05:53:25 Off the coast of Ibaraki     10 3.51  
2021-08-04 07:10:56 Off the coast of Ibaraki     50 4.83  
2021-08-04 07:49:06 Off the coast of Ibaraki     20 3.51  
2021-08-04 11:56:26 Off the coast of Ibaraki     10 4.93  
2021-08-04 12:05:40 Off the coast of Ibaraki     10 3.51  
2021-08-04 13:40:26 Off the coast of Ibaraki     10 5.63  
2021-08-04 15:08:25 Off the coast of Ibaraki     20 42  
2021-08-04 15:14:58 Off the coast of Ibaraki     50 4.52  
2021-08-04 16:52:59 Near Taiwan     100 4.52  
2021-08-04 18:26:40 Off the coast of Ibaraki     40 4.83  
2021-08-04 19:28:31 Off the coast of Ibaraki     10 3.62  
2021-08-04 23:23:51 Off the coast of Ibaraki     50 3.51  
2021-08-05 06:50:40 Near Taiwan     10 6.54  
2021-08-05 06:53:08 Off the west coast of Satsuma Peninsula     40 3.52  
2021-08-05 06:56:10 Near Taiwan     10 6.23  
2021-08-05 11:14:07 Near the coast of Yonagunijima     60 53  
2021-08-05 20:14:24 Off the coast of Akita     10 3.61  
2021-08-06 02:58:42 Off the coast of Okinawa Main Island     20 3.92  
2021-08-07 11:56:05 Off the coast of Iwate     10 3.52  
2021-08-08 18:18:44 Off the coast of Fukushima     50 3.31  
2021-08-08 18:37:33 Off the southeast coast of Nemuro Peninsula     70 4.12  
2021-08-10 01:15:09 Off the coast of Ibaraki     30 4.73  
2021-08-10 03:20:57 Off the coast of Miyagi     40 3.61  
2021-08-13 07:53:42 Near the coast of Yonagunijima     60 4.42  
2021-08-13 14:36:28 Off the coast of Fukushima     10 4.72  
2021-08-14 17:32:58 Off the coast of Fukushima     10 3.51  
2021-08-15 15:16:19 Off the coast of Miyagi     40 3.62  
2021-08-17 07:47:25 Off the coast of Miyagi     10 3.41  
2021-08-17 08:56:15 Off the coast of Miyagi     50 3.52  
2021-08-18 18:44:44 Off the coast of Hachijojima     40 4.52  
2021-08-20 08:30:13 Off the east coast of Aomori     60 3.52  
2021-08-20 16:40:27 Off the coast of Fukushima     10 3.51  
2021-08-21 03:58:11 Off Abashiri     10 4.52  
2021-08-21 14:34:51 Off Abashiri     10 4.32  
2021-08-22 01:01:24 Off the coast of Uraga     60 3.52  
2021-08-22 04:45:19 Off the coast of Hachijojima     30 4.51  
2021-08-22 06:14:38 Near Sado     10 3.32  
2021-08-22 06:55:37 Off the east coast of Kanto     10 5.43  
2021-08-22 11:24:34 Off the coast of Fukushima     60 5.24  
2021-08-23 10:24:23 Off the coast of Sanriku     40 4.61  
2021-08-23 10:43:18 Off the coast of Iwate     60 3.52  
2021-08-24 19:20:15 Wakasa Bay     410 4.1Unkn 
2021-08-25 04:38:06 Near the coast of Amami Oshima     20 4.63  
2021-08-26 12:04:24 Off the northwest coast of Ishigaki Island     100 4.52  
2021-08-27 05:46:07 Off the coast of Ibaraki     30 4.63  
2021-08-27 05:49:06 Off the coast of Ibaraki     30 4.83  
2021-08-28 13:05:57 Off the southeast coast of Nemuro Peninsula     10 3.61  
2021-08-31 09:34:27 Off the west coast of Satsuma Peninsula     170 3.7Unkn 
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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