J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2012-05-04 11:20:39 Off the coast of Ibaraki     10km 4.43  
2012-05-04 11:54:10 Northwest Chiba     70km 4.63  
2012-05-04 12:01:47 Northwest Chiba     80km 4.23  
2012-05-04 14:34:10 Near Kunashir     70km 5.13  
2012-05-05 17:11:56 Off the east coast of Chiba     10km 4.63  
2012-05-05 18:56:53 West Aichi     40km 4.53  
2012-05-06 05:12:28 Off the coast of Miyagi     10km 5.33  
2012-05-08 02:00:46 Off the east coast of Chiba     10km 4.43  
2012-05-08 03:59:45 Off the coast of Fukushima     30km 4.93  
2012-05-08 14:43:13 Off the coast of Fukushima     40km 4.73  
2012-05-09 06:46:54 Off the coast of Iwate     50km 4.73  
2012-05-10 00:20:06 Southern Kyoto     10km 3.33  
2012-05-10 09:28:20 Off the coast of Iwate     10km 5.34  
2012-05-10 15:01:29 Off the coast of Kushiro     40km 4.93  
2012-05-10 15:41:16 Off the coast of Iwate     20km 4.63  
2012-05-10 17:34:49 Off the coast of Fukushima     30km 4.93  
2012-05-10 18:43:36 Off the east coast of Chiba     10km 4.54  
2012-05-11 23:18:48 Off the east coast of Chiba     10km 4.33  
2012-05-12 20:32:49 Off the coast of Fukushima     10km 4.03  
2012-05-14 08:17:47 Off the east coast of Chiba     10km 5.14  
2012-05-14 12:36:45 Hyuganada     30km 4.93  
2012-05-15 04:19:26 Off the coast of Ibaraki     30km 4.83  
2012-05-15 06:21:47 Near the coast of Miyakojima     10km 4.43  
2012-05-15 09:09:05 Off the coast of Iwate     50km 4.63  
2012-05-16 01:00:45 Off the coast of Miyagi     70km 5.23  
2012-05-18 17:19:03 Southern Tochigi     10km 5.14  
2012-05-18 20:21:35 Northeast Chiba     40km 4.53  
2012-05-18 23:36:34 Central Nagano     10km 4.43  
2012-05-20 04:05:13 Off the coast of Sanriku     10km 5.83  
2012-05-20 16:19:50 Off the coast of Sanriku     10km 6.23  
2012-05-21 12:18:45     90km 5.33  
2012-05-27 20:20:05 Near the coast of Yonagunijima     10km 5.24  
2012-05-28 13:16:59 Off the east coast of Chiba     10km 4.33  
2012-05-28 15:31:57 Noto, Ishikawa     10km 4.44  
2012-05-29 15:38:09 Off the east coast of Chiba     10km 4.73  
2012-05-31 07:27:31 Off the coast of Akita     10km 3.53  
2012-05-31 14:49:31 Off the coast of Fukushima     60km 5.23  
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