J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2011-12-01 22:23:54 East Toyama     10km 4.63  
2011-12-02 01:27:17 Off the east coast of Chiba     10km 3.93  
2011-12-02 09:50:28 Off the coast of Miyagi     50km 4.83  
2011-12-03 05:55:28 Northeast Chiba     20km 5.65 Lower  
2011-12-03 06:03:40     20km 4.43  
2011-12-03 13:16:38 Off the coast of Miyagi     50km 4.93  
2011-12-03 15:42:22 Off the coast of Fukushima     20km 4.73  
2011-12-05 01:02:38 Bungo channel     50km 4.43  
2011-12-05 04:20:04 Off the coast of Miyagi     50km 4.73  
2011-12-08 01:12:30 Off the coast of Notohanto     10km 4.83  
2011-12-08 05:43:11     60km 5.03  
2011-12-08 07:11:38 Off the coast of Ibaraki     30km 4.73  
2011-12-09 12:57:13 Off the coast of Miyagi     50km 4.63  
2011-12-10 00:23:10 Off the coast of Ibaraki     50km 4.53  
2011-12-10 13:19:28 Northwest Chiba     60km 4.23  
2011-12-10 15:08:15 Off the coast of Miyagi     50km 5.13  
2011-12-11 10:22:41 Near the coast of Amami Oshima     40km 5.54  
2011-12-11 12:30:51 Near the coast of Amami Oshima     40km 4.63  
2011-12-11 13:09:17 Near the coast of Amami Oshima     40km 4.13  
2011-12-12 04:51:10 Off the coast of Ibaraki     30km 4.83  
2011-12-12 10:39:49 Near the coast of Amami Oshima     40km 4.13  
2011-12-12 14:13:20 Northeast Chiba     20km 5.04  
2011-12-13 20:31:00 Nakado-ri, Fukushima     10km 4.13  
2011-12-14 13:01:08 East Mino, Gifu     50km 5.23  
2011-12-14 16:31:46 Near the coast of Amami Oshima     10km 4.33  
2011-12-17 11:20:39 Northern Ibaraki     10km 4.13  
2011-12-17 17:50:33 Off the coast of Notohanto     10km 4.74  
2011-12-18 18:01:59 Off the east coast of Chiba     20km 5.03  
2011-12-19 16:01:41 Off the east coast of Chiba     10km 5.94  
2011-12-19 23:39:59 Off the coast of Ibaraki     10km 4.03  
2011-12-20 02:23:15 Off the coast of Ibaraki     10km 4.03  
2011-12-20 02:24:43 Northern Ibaraki     10km 3.73  
2011-12-20 15:26:18 Off the coast of Iwate     10km 5.03  
2011-12-21 11:06:51 Off the coast of Iwate     50km 4.93  
2011-12-22 05:10:30 Off the coast of Fukushima     20km 4.93  
2011-12-22 17:41:33 Northwest Chiba     70km 4.53  
2011-12-23 23:44:06 Southern Ibaraki     50km 4.43  
2011-12-26 02:41:38 Off the coast of Ibaraki     30km 4.03  
2011-12-27 07:37:45 Southern inland of Akita     10km 4.13  
2011-12-27 14:34:56 Off the coast of Fukushima     10km 4.74  
2011-12-30 18:34:49 Off the coast of Miyagi     70km 4.83  
2011-12-31 08:11:04 Northern Ibaraki     10km 4.43  
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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