J1 Earthquake Early Warning
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Quake Time Epicenter Latitude Longitude Depth Mag Intensity Remarks
2013-12-18 19:14:08 Off the coast of Miyagi 38.7 142.4 20 4.73  
2013-12-18 22:50:17 South Central Kushiro 43.2 144.1 140 3.51  
2013-12-18 22:54:16 Off the coast of Sanriku 37.9 142.9 10 3.61  
2013-12-19 13:25:51 Off the coast of Sanriku 39.4 143.9 10 4.92  
2013-12-19 22:55:56 Near the coast of Okinawa Island 26.6 127.8 40 4.23  
2013-12-20 15:43:10 Near Iriomotejima 24.0 123.6 30 4.23  
2013-12-21 01:10:46 Southern Ibaraki 35.9 140.2 60 5.64  
2013-12-21 10:34:15 Northeast Chiba 35.7 140.7 30 5.44  
2013-12-21 16:19:05 Central East Iburi Subprefecture 42.6 141.3 10 3.32  
2013-12-21 22:54:09 Off the coast of Miyagi 37.8 142.7 10 4.32  
2013-12-25 07:41:57 Off the coast of Ibaraki 36.8 141.3 40 3.82  
2013-12-26 03:43:22 Off the east coast of Aomori 41.0 142.1 50 3.72  
2013-12-26 06:47:38 Off the coast of Kushiro 42.8 145.3 60 3.62  
2013-12-26 18:14:32 Off the coast of Fukushima 37.6 142.2 10 3.51  
2013-12-27 19:31:17 Off the coast of Iwate 40.2 142.4 20 4.93  
2013-12-28 21:27:05 Off the coast of Fukushima 37.3 141.7 50 4.62  
2013-12-29 10:22:16 Off the coast of Miyagi 38.1 141.9 40 4.53  
2013-12-29 23:29:13 Off the southeast coast of Nemuro Peninsula 43.0 145.6 100 3.41  
2013-12-29 23:51:47 Off the coast of Fukushima 37.6 142.2 10 3.71  
2013-12-30 18:44:15 Off the coast of Ibaraki 36.3 141.4 20 3.72  
2013-12-30 21:55:55 Izu Islands 34.6 139.6 10 4.73  
2013-12-30 22:09:57 Izu Islands 34.6 139.7 10 4.33  
2013-12-31 10:02:59 Northern Ibaraki 36.7 140.6 10 5.35 Lower  
2013-12-31 10:09:50 Northern Ibaraki 36.7 140.6 10 3.63  
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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