J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2012-04-01 02:13:01 Off the coast of Ibaraki     10km 4.13  
2012-04-01 07:30:15 Nothern coast of Iwate     60km 4.43  
2012-04-01 23:04:25 Off the coast of Fukushima     10km 6.35 Lower  
2012-04-02 16:39:07 Iyonada     60km 4.63  
2012-04-03 02:48:14 Off the coast of Miyagi     50km 4.53  
2012-04-08 14:44:56 Off the coast of Fukushima     50km 4.73  
2012-04-09 06:43:23 Near Taiwan     10km 6.03  
2012-04-10 11:57:37 Off the coast of Miyagi     40km 4.73  
2012-04-12 05:29:17 Off the coast of Iwate     50km 4.83  
2012-04-12 20:19:46 Off the coast of Ibaraki     10km 5.64  
2012-04-12 23:50:42 Off the coast of Fukushima     10km 5.84  
2012-04-13 19:09:51 Off the coast of Fukushima     10km 6.04  
2012-04-13 21:11:51 Off the coast of Fukushima     10km 5.43  
2012-04-14 07:54:11 Off the coast of Ibaraki     10km 4.43  
2012-04-14 18:25:11 Off the coast of Ibaraki     30km 5.13  
2012-04-14 19:48:46 Off the coast of Fukushima     10km 4.63  
2012-04-14 19:51:20 Off the coast of Fukushima     10km 5.33  
2012-04-14 20:08:43 Off the coast of Iwate     10km 4.53  
2012-04-14 21:39:54 Near the coast of Tanegashima     50km 4.93  
2012-04-15 19:36:49 Off the coast of Fukushima     30km 4.73  
2012-04-17 21:29:06 Off the coast of Fukushima     30km 4.83  
2012-04-19 12:32:48 Off the coast of Sanriku     10km 6.33  
2012-04-20 06:53:53 Off the coast of Fukushima     10km 4.93  
2012-04-22 12:52:05 Off the coast of Fukushima     40km 4.83  
2012-04-22 15:46:34 Off the coast of Ibaraki     10km 4.94  
2012-04-22 18:45:20 Off the coast of Fukushima     30km 4.83  
2012-04-22 20:00:52 Nakado-ri, Fukushima     10km 4.13  
2012-04-22 22:37:03 Near Iriomotejima     10km 4.73  
2012-04-23 17:50:40     70km 4.53  
2012-04-25 05:22:12 Northeast Chiba     10km 5.64  
2012-04-26 05:45:24 Off the coast of Fukushima     70km 5.13  
2012-04-27 03:41:19 Off the east coast of Aomori     60km 5.03  
2012-04-29 17:12:52 Southern, Chiba     10km 4.33  
2012-04-29 19:28:55 Northeast Chiba     10km 6.15 Lower  
2012-04-29 21:16:52 Off the coast of Ibaraki     50km 4.93  
2012-04-30 00:02:18 Off the coast of Iwate     10km 5.54  
2012-04-30 09:20:30 Off the coast of Fukushima     10km 4.93  
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