J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2018-04-02 22:23:52 Off the coast of Uraga     60 3.52  
2018-04-04 13:27:00 Off the southeast coast of Mie     10 4.02  
2018-04-04 16:37:01 Off the coast of Fukushima     40 4.52  
2018-04-12 08:55:31 Off the coast of Fukushima     40 3.81  
2018-04-12 22:37:39 Off the coast of Miyagi     60 5.14  
2018-04-13 12:45:48 Off the coast of Sanriku     10 5.02  
2018-04-14 03:05:00 Near the coast of Okinawa Island     20 3.51  
2018-04-14 15:13:27 Aichi-West     10 4.14  
2018-04-15 12:45:31 Near Iriomotejima     10 3.72  
2018-04-16 00:09:47 Off the coast of Iwate     50 4.42  
2018-04-16 00:58:01 Near the coast of Tokara Islands     10 4.73  
2018-04-16 04:51:51 Off the east coast of Hachijojima     120 4.22  
2018-04-16 08:45:50 Off the coast of Fukushima     40 3.51  
2018-04-16 10:04:15 Off the coast of Kushiro     10 3.51  
2018-04-17 03:09:01 Off the coast of Hachijojima     210 4.8Unkn 
2018-04-18 20:46:11 Off the coast of Sanriku     10 4.72  
2018-04-20 09:11:47 Off the coast of Iwate     10 3.52  
2018-04-20 19:45:49 Off the coast of Kushiro     50 4.53  
2018-04-20 22:48:59 Off the coast of Iwate     20 4.12  
2018-04-22 16:56:29 Off the southeast coast of Chiba     50 4.02  
2018-04-22 20:30:21 Near the coast of Niijima / Kouzujima     10 4.43  
2018-04-23 01:01:50 Shimane-West     10 4.33  
2018-04-23 05:45:38 Near the coast of Niijima / Kouzujima     10 3.83  
2018-04-23 05:49:34 Near the coast of Niijima / Kouzujima     10 4.33  
2018-04-23 22:40:51 Off the coast of Uraga     60 3.52  
2018-04-27 10:49:10 Near the coast of Okinawa Island     10 3.71  
2018-04-28 00:58:59 Near Iriomotejima     10 4.33  
2018-04-28 03:42:39 Shimane-West     10 3.83  
2018-04-28 13:27:15 Hyuganada     20 4.42  
2018-04-28 20:27:02 Ibaraki-North     60 3.42  
2018-04-29 06:30:25 Near Iriomotejima     20 3.72  
2018-04-29 12:09:37 Off the coast of Iwate     50 3.72  
2018-04-29 21:31:57 青森県下北地方     10 3.43  
2018-04-30 10:18:33 Off the coast of Miyagi     40 3.92  
2018-04-30 22:43:51 Near Iriomotejima     20 3.52  
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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