J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2012-01-05 21:37:26 Off the coast of Fukushima     10km 4.54  
2012-01-12 12:20:43 Off the coast of Ibaraki     10km 5.84  
2012-01-12 20:11:18 Off the coast of Fukushima     10km 4.74  
2012-01-12 20:11:18 Off the coast of Fukushima     10km 4.74  
2012-01-13 21:50:05 Northern Ibaraki     10km 4.84  
2012-01-13 21:50:05 Northern Ibaraki     10km 4.84  
2012-01-19 22:09:38 Off the coast of Ibaraki     10km 4.74  
2012-01-23 20:45:41 Off the coast of Fukushima     40km 5.74  
2012-01-27 13:19:24 Off the east coast of Chiba     10km 6.55 Lower  
2012-01-27 13:19:24 Off the east coast of Chiba     10km 5.34  
2012-01-27 13:19:24 Off the east coast of Chiba     10km 6.55 Lower  
2012-01-28 07:39:44     10km 4.94  
2012-01-28 07:43:14     10km 5.24  
2012-01-28 09:22:05 Off the east coast of Aomori     20km 5.74  
2012-02-15 13:36:30 East Oshimashi Subprefecture     10km 4.74  
2012-02-18 14:13:10 Northwest Chiba     10km 4.54  
2012-02-19 14:54:44 Off the coast of Ibaraki     10km 5.24  
2012-02-28 04:31:49 Near the coast of Okinawa Island     50km 5.84  
2012-02-28 14:20:47 Off the coast of Ibaraki     10km 5.34  
2012-02-29 23:32:26 Off the east coast of Kanto     10km 6.24  
2012-03-01 07:32:36 Off the coast of Ibaraki     10km 5.54  
2012-03-10 02:25:28 Off the coast of Ibaraki     10km 5.45 Lower  
2012-03-14 21:05:04 Off the east coast of Chiba     10km 6.26 Lower  
2012-03-14 22:29:50 Off the coast of Ibaraki     10km 4.54  
2012-03-16 04:20:20 Southern Saitama     60km 5.24  
2012-03-17 08:18:11 Off the east coast of Chiba     10km 4.74  
2012-03-27 19:21:58 Off the east coast of Chiba     10km 4.74  
2012-03-27 20:00:39 Off the coast of Iwate     10km 6.15 Lower  
2012-03-30 13:38:32 Off the coast of Fukushima     50km 5.64  
2012-04-01 23:04:25 Off the coast of Fukushima     10km 6.35 Lower  
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  
2012-04-22 15:46:34 Off the coast of Ibaraki     10km 4.94  
2012-04-25 05:22:12 Northeast Chiba     10km 5.64  
2012-04-29 19:28:55 Northeast Chiba     10km 6.15 Lower  
2012-04-30 00:02:18 Off the coast of Iwate     10km 5.54  
2012-05-10 09:28:20 Off the coast of Iwate     10km 5.34  
2012-05-10 18:43:36 Off the east coast of Chiba     10km 4.54  
2012-05-14 08:17:47 Off the east coast of Chiba     10km 5.14  
2012-05-18 17:19:03 Southern Tochigi     10km 5.14  
2012-05-27 20:20:05 Near the coast of Yonagunijima     10km 5.24  
2012-05-28 15:31:57 Noto, Ishikawa     10km 4.44  
2012-06-01 17:48:08 Southern Ibaraki     50km 5.54  
2012-06-10 06:00:16 Near Taiwan     10km 6.04  
2012-06-18 05:32:25 Off the coast of Miyagi     10km 6.05 Lower  
2012-06-21 13:19:14 Hamado-ri, Fukushima     80km 5.35 Lower  
2012-06-28 14:51:52 Off the coast of Fukushima     10km 5.64  
2012-06-29 02:43:50     10km 5.25 Lower  
2012-07-10 12:48:58 Northern Nagano     10km 5.04  
2012-07-10 12:57:21 Northern Nagano     10km 4.54  
2012-07-10 13:03:16 Northern Nagano     10km 4.54  
2012-07-10 13:33:26 Northern Nagano     10km 4.84  
2012-07-14 13:04:29 Northern Nagano     10km 4.64  
2012-07-15 23:08:06 Southern Souya Subprefecture     10km 4.64  
2012-08-03 22:19:37 Southern Ibaraki     40km 4.94  
2012-08-14 12:01:04 Noerthen Souya Subprefecture     10km 6.64  
2012-08-17 08:46:45 Amakusanada     10km 5.04  
2012-08-20 20:42:46 Northeast Chiba     50km 5.34  
2012-08-22 10:33:03 East Hidaka Subprefecture     70km 5.44  
2012-08-24 20:01:40 Near the coast of Niijima / Kouzujima     10km 4.44  
2012-08-25 23:16:17 Southern Tokachi Subprefecture     50km 6.24  
2012-08-30 04:05:16 Off the coast of Miyagi     10km 6.24  
2012-09-14 02:22:10 Northeast Chiba     10km 5.54  
2012-09-16 01:09:40 Off the coast of Ibaraki     10km 4.64  
2012-10-06 01:19:01 Northern inland of Akita     10km 5.34  
2012-10-12 13:57:22 Northeast Chiba     10km 5.24  
2012-10-18 00:00:36 Off the coast of Miyagi     10km 5.74  
2012-10-18 01:16:43 Chuetsu, Niigata     10km 4.84  
2012-10-20 18:02:11 Northern Ibaraki     10km 4.74  
2012-10-25 19:32:26 Off the coast of Miyagi     10km 5.84  
2012-11-22 02:42:38 Off the coast of Miyagi     40km 5.34  
2012-11-24 05:21:28 Off the coast of Miyagi     40km 5.54  
2012-11-24 17:59:55 Northwest Chiba     10km 5.44  
2012-12-07 17:18:29 Off the coast of Sanriku     10km 7.85 Lower  
2012-12-21 17:07:19 Off the coast of Miyagi     50km 5.54  
2012-12-29 23:59:42 Off the coast of Miyagi     10km 5.54  
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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