J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2011-06-01 01:41:19 Off the coast of Fukushima     20km 5.13  
2011-06-01 02:15:17 Off the coast of Miyagi     50km 4.53  
2011-06-01 03:48:24 Nakado-ri, Fukushima     10km 4.03  
2011-06-01 08:19:58 Northern Ibaraki     10km 4.13  
2011-06-01 17:18:15 Off the east coast of Chiba     20km 4.63  
2011-06-02 03:36:59 Off the coast of Iwate     40km 4.63  
2011-06-02 10:28:19 Nakado-ri, Fukushima     20km 4.33  
2011-06-02 11:33:47 Chuetsu, Niigata     10km 4.54  
2011-06-02 12:50:53 Chuetsu, Niigata     10km 5.04  
2011-06-02 14:47:52 Northern Ibaraki     10km 3.73  
2011-06-02 16:01:49 Chuetsu, Niigata     10km 4.64  
2011-06-02 21:00:08 East Toyama     10km 4.43  
2011-06-02 23:41:35 Nakado-ri, Fukushima     10km 4.23  
2011-06-03 10:33:28 Southern Ibaraki     60km 5.03  
2011-06-04 01:00:14 Off the coast of Fukushima     10km 6.04  
2011-06-04 01:57:30 East Shimane     10km 5.14  
2011-06-04 02:03:22 East Shimane     10km 4.13  
2011-06-04 09:03:33 Off the coast of Fukushima     10km 4.93  
2011-06-04 10:41:09 Off the coast of Fukushima     10km 4.53  
2011-06-04 12:32:58 Northern inland of Akita     10km 4.54  
2011-06-04 12:37:16 Off the coast of Miyagi     70km 4.53  
2011-06-05 17:18:55 Off the coast of Fukushima     10km 5.34  
2011-06-05 19:46:06 Hamado-ri, Fukushima     10km 3.43  
2011-06-05 20:16:37 Hamado-ri, Fukushima     10km 4.54  
2011-06-07 05:10:27 Off the coast of Fukushima     40km 4.93  
2011-06-09 07:11:12 Off the coast of Iwate     10km 5.53  
2011-06-09 09:12:03 Near the coast of Miyakojima     50km 4.93  
2011-06-09 19:26:01 Off the coast of Fukushima     10km 5.43  
2011-06-09 19:38:27 Off the coast of Ibaraki     10km 5.44  
2011-06-09 19:38:27 Off the coast of Ibaraki     10km 5.84  
2011-06-09 19:38:33 Off the coast of Ibaraki     10km 4.63  
2011-06-09 19:38:33 Off the coast of Ibaraki     10km 4.63  
2011-06-09 19:38:33 Off the coast of Ibaraki     10km 4.63  
2011-06-10 00:40:56 Off the coast of Miyagi     40km 4.93  
2011-06-10 03:15:51 Off the coast of Iwate     20km 4.93  
2011-06-10 05:44:14 Northeast Chiba     20km 3.93  
2011-06-10 06:03:11 Off the east coast of Chiba     10km 5.44  
2011-06-10 17:18:29 Off the coast of Ibaraki     20km 4.53  
2011-06-10 22:39:42 Okitama, Yamagata     10km 5.95 Lower  
2011-06-11 07:35:51 Off the coast of Miyagi     10km 5.13  
2011-06-12 05:08:50 Off the coast of Fukushima     10km 5.53  
2011-06-12 09:37:55 Off the east coast of Chiba     10km 4.74  
2011-06-12 09:37:55 Off the east coast of Chiba     10km 4.74  
2011-06-12 17:09:45 Off the coast of Ibaraki     50km 5.03  
2011-06-13 05:48:14 Near the coast of Amami Oshima     40km 5.23  
2011-06-13 15:50:31 Off the coast of Sanriku     10km 5.23  
2011-06-13 15:50:31 Off the coast of Sanriku     10km 5.23  
2011-06-13 15:50:31 Off the coast of Sanriku     10km 5.23  
2011-06-13 15:50:31 Off the coast of Sanriku     10km 5.23  
2011-06-14 05:59:35 Off the coast of Fukushima     20km 4.83  
2011-06-14 21:48:55 Off the coast of Kushiro     60km 4.93  
2011-06-14 21:48:55 Off the coast of Kushiro     60km 4.93  
2011-06-14 21:48:55 Off the coast of Kushiro     60km 4.93  
2011-06-14 21:48:55 Off the coast of Kushiro     60km 4.93  
2011-06-14 23:56:00 Off the coast of Iwate     10km 5.33  
2011-06-15 02:54:45 Off the coast of Iwate     20km 5.03  
2011-06-15 08:15:50 Nakado-ri, Fukushima     10km 4.03  
2011-06-16 15:52:55 Off the coast of Ibaraki     10km 5.23  
2011-06-16 23:32:21 East Shimane     10km 4.53  
2011-06-17 04:00:06 Off the east coast of Kanto     10km 5.23  
2011-06-18 13:33:10 Off the coast of Ibaraki     10km 3.83  
2011-06-18 18:12:49 Off the coast of Fukushima     50km 4.63  
2011-06-18 18:57:55 Northwest Chiba     60km 4.63  
2011-06-18 20:31:05 Off the coast of Fukushima     10km 6.04  
2011-06-19 04:10:27 Off the coast of Ibaraki     20km 4.83  
2011-06-19 15:52:45 Off the east coast of Chiba     10km 5.13  
2011-06-20 03:58:33 Off the coast of Fukushima     50km 4.83  
2011-06-20 07:25:31 Nakado-ri, Fukushima     10km 4.13  
2011-06-20 10:34:46 Off the east coast of Chiba     10km 5.13  
2011-06-20 10:46:36 Off the east coast of Chiba     40km 4.93  
2011-06-21 13:39:50 Off the coast of Miyagi     40km 4.83  
2011-06-21 17:49:45 Off the east coast of Chiba     10km 5.84  
2011-06-21 18:51:48 Central Ishikari Subprefecture     10km 4.23  
2011-06-21 23:30:59 Off the east coast of Chiba     50km 4.43  
2011-06-22 05:18:41 Near the coast of Okinawa Island     30km 4.83  
2011-06-22 20:35:01 Off the east coast of Chiba     20km 4.53  
2011-06-22 23:28:56 Off the coast of Iwate     10km 5.23  
2011-06-23 03:18:52 Northern Ibaraki     50km 4.33  
2011-06-23 06:50:37 Off the coast of Sanriku     10km 7.95 Lower  
2011-06-23 19:35:02 Off the coast of Miyagi     60km 5.54  
2011-06-23 20:38:33 Off the southeast coast of Tanegashima     50km 5.03  
2011-06-23 20:38:33 Off the southeast coast of Tanegashima     50km 5.03  
2011-06-23 20:38:33 Off the southeast coast of Tanegashima     50km 5.03  
2011-06-23 20:38:33 Off the southeast coast of Tanegashima     50km 5.03  
2011-06-24 03:48:03 Near the coast of Izuoshima     10km 4.23  
2011-06-24 23:46:30     10km 6.56 Upper  
2011-06-25 00:22:47 Off the coast of Fukushima     60km 4.53  
2011-06-25 02:39:24 Off the coast of Uraga     10km 5.23  
2011-06-25 02:39:24 Off the coast of Uraga     10km 5.23  
2011-06-25 02:39:24 Off the coast of Uraga     10km 5.23  
2011-06-25 02:39:24 Off the coast of Uraga     10km 5.23  
2011-06-25 09:44:17 Off the coast of Iwate     50km 4.73  
2011-06-25 16:06:02 Nakado-ri, Fukushima     10km 4.53  
2011-06-25 17:25:32 Nakado-ri, Fukushima     10km 5.34  
2011-06-28 00:04:34 Off the coast of Ibaraki     10km 4.63  
2011-06-28 00:04:34 Off the coast of Ibaraki     10km 4.63  
2011-06-28 00:04:34 Off the coast of Ibaraki     10km 4.63  
2011-06-28 00:04:34 Off the coast of Ibaraki     10km 4.63  
2011-06-28 00:04:34 Off the coast of Ibaraki     10km 4.63  
2011-06-28 12:45:04 Hamado-ri, Fukushima     10km 3.63  
2011-06-28 19:46:37 Nakado-ri, Fukushima     10km 4.13  
2011-06-28 19:46:37 Nakado-ri, Fukushima     10km 4.13  
2011-06-28 19:46:37 Nakado-ri, Fukushima     10km 4.13  
2011-06-28 19:46:37 Nakado-ri, Fukushima     10km 4.13  
2011-06-29 11:04:53 Nakado-ri, Fukushima     10km 4.64  
2011-06-29 23:19:27 Off the coast of Fukushima     60km 4.53  
2011-06-30 02:49:48 Off the east coast of Chiba     10km 3.23  
2011-06-30 02:49:48 Off the east coast of Chiba     10km 3.23  
2011-06-30 02:49:48 Off the east coast of Chiba     10km 3.23  
2011-06-30 02:49:48 Off the east coast of Chiba     10km 3.23  
2011-06-30 07:14:38 Northeast Chiba     40km 4.23  
2011-06-30 07:14:38 Northeast Chiba     40km 4.23  
2011-06-30 07:14:38 Northeast Chiba     40km 4.23  
2011-06-30 07:14:38 Northeast Chiba     40km 4.23  
2011-06-30 08:16:37 Central Nagano     10km 5.34  
2011-06-30 08:21:33 Central Nagano     10km 5.14  
2011-06-30 13:18:07 Northern inland of Iwate     10km 4.03  
2011-06-30 19:22:44 Off the coast of Fukushima     40km 5.13  
2011-06-30 23:07:58 Northeast Chiba     30km 4.03  
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