J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2011-10-01 02:19:57 Off the east coast of Chiba     10km 4.83  
2011-10-01 06:37:21 Nakado-ri, Fukushima     10km 4.44  
2011-10-01 13:19:25 Off the coast of Ibaraki     10km 5.13  
2011-10-02 05:06:00 Off the coast of Ibaraki     10km 4.93  
2011-10-02 05:06:00 Off the coast of Ibaraki     10km 4.93  
2011-10-02 05:06:00 Off the coast of Ibaraki     10km 4.93  
2011-10-02 05:06:00 Off the coast of Ibaraki     10km 4.93  
2011-10-02 06:24:04 Off the coast of Fukushima     10km 4.63  
2011-10-02 23:36:08 Nakado-ri, Fukushima     10km 4.43  
2011-10-03 01:48:59 Off the coast of Fukushima     10km 5.43  
2011-10-03 01:52:28 East Toyama     10km 4.73  
2011-10-03 06:48:51 Off the east coast of Chiba     10km 4.53  
2011-10-03 07:29:50 Nakado-ri, Fukushima     10km 4.84  
2011-10-04 19:19:30 Northern Tokushima     50km 4.53  
2011-10-04 19:25:10 Nakado-ri, Fukushima     10km 5.65 Lower  
2011-10-04 19:25:10 Nakado-ri, Fukushima     10km 5.65 Lower  
2011-10-04 19:25:10 Nakado-ri, Fukushima     10km 5.65 Lower  
2011-10-04 19:25:10 Nakado-ri, Fukushima     10km 5.65 Lower  
2011-10-04 20:58:32 Off the east coast of Chiba     10km 4.93  
2011-10-04 20:58:32 Off the east coast of Chiba     10km 4.93  
2011-10-04 20:58:32 Off the east coast of Chiba     10km 4.93  
2011-10-05 03:52:41 Off the coast of Ibaraki     10km 4.33  
2011-10-05 12:43:04 Southern Miyagi     10km 4.53  
2011-10-05 14:16:17 Off the coast of Iwate     10km 4.53  
2011-10-05 14:17:36 Off the coast of Iwate     10km 5.04  
2011-10-05 19:00:01 East Toyama     10km 5.44  
2011-10-05 19:06:13 East Toyama     10km 5.03  
2011-10-05 19:12:53 Central Nagano     10km 5.14  
2011-10-05 23:33:27 Kumamoto, Kumamoto     10km 4.44  
2011-10-06 06:55:10 Northern Nagano     10km 4.53  
2011-10-06 07:57:33 Northern Nagano     10km 4.23  
2011-10-06 17:39:30 Northern Gunma     10km 4.23  
2011-10-06 17:39:30 Northern Gunma     10km 4.03  
2011-10-06 17:39:30 Northern Gunma     10km 4.03  
2011-10-06 17:39:30 Northern Gunma     10km 4.03  
2011-10-06 19:37:10 East Toyama     10km 4.73  
2011-10-07 11:51:19 Off the coast of Uraga     60km 5.03  
2011-10-07 18:34:44 Off the coast of Ibaraki     10km 5.53  
2011-10-07 18:34:44 Off the coast of Ibaraki     10km 5.53  
2011-10-07 18:34:44 Off the coast of Ibaraki     10km 5.53  
2011-10-07 18:34:44 Off the coast of Ibaraki     10km 5.53  
2011-10-08 06:11:38 Kii Channel     20km 4.53  
2011-10-09 01:08:48 Southern Ibaraki     60km 4.63  
2011-10-09 16:18:25 Southern Osaka     10km 3.53  
2011-10-10 11:45:59 Off the coast of Fukushima     40km 6.04  
2011-10-12 06:31:55 Near Sado     20km 4.93  
2011-10-12 06:31:55 Near Sado     50km 4.93  
2011-10-14 18:26:55 Northwest Chiba     60km 4.63  
2011-10-14 19:59:21 Off the coast of Fukushima     20km 4.83  
2011-10-15 17:23:46 Off the coast of Uraga     50km 4.83  
2011-10-18 13:10:36 Nakado-ri, Fukushima     10km 4.23  
2011-10-19 16:05:01 Nakado-ri, Fukushima     10km 4.03  
2011-10-19 16:05:01 Nakado-ri, Fukushima     10km 4.13  
2011-10-20 06:13:53 Nakado-ri, Fukushima     10km 4.13  
2011-10-20 06:21:39 Nakado-ri, Fukushima     10km 4.43  
2011-10-21 23:17:59 Off the coast of Ibaraki     10km 4.24  
2011-10-24 01:32:11 Off the coast of Miyagi     50km 4.53  
2011-10-24 03:58:34 Off the coast of Iwate     50km 4.93  
2011-10-25 06:37:26 Off the coast of Miyagi     50km 4.63  
2011-10-25 12:54:10 Off the coast of Fukushima     60km 4.63  
2011-10-26 02:08:52 Off the coast of Fukushima     10km 5.34  
2011-10-26 13:19:01 Off the coast of Ibaraki     10km 4.94  
2011-10-26 18:31:27 Off the coast of Ibaraki     10km 4.34  
2011-10-27 01:08:08 Off the coast of Fukushima     10km 5.13  
2011-10-27 01:13:06 Off the coast of Fukushima     10km 4.73  
2011-10-27 01:13:06 Off the coast of Fukushima     10km 4.73  
2011-10-27 01:13:06 Off the coast of Fukushima     10km 4.73  
2011-10-27 01:13:06 Off the coast of Fukushima     10km 4.73  
2011-10-28 09:36:49 Northern Ibaraki     10km 4.13  
2011-10-28 11:06:39 Off the coast of Miyagi     50km 4.53  
2011-10-29 02:12:13 Off the east coast of Chiba     20km 3.93  
2011-10-29 11:56:48 Off the east coast of Chiba     10km 4.83  
2011-10-29 15:24:43 Off the coast of Miyagi     40km 5.23  
2011-10-30 03:17:07 Nakado-ri, Fukushima     10km 4.23  
2011-10-31 16:22:20 Northeast Chiba     30km 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