J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2023-02-02 09:18:46 Off the coast of Sanriku     10 3.91  
2023-02-02 11:57:19 Off the southeast coast of Nemuro Peninsula     90 42  
2023-02-02 19:39:54 Near the coast of Okinawa     10 4.22  
2023-02-03 02:58:23 Off the coast of Miyagi     50 3.62  
2023-02-05 09:03:09 Off the coast of Hachijojima     10 6.52  
2023-02-08 15:39:00 Off the coast of Kushiro     50 4.33  
2023-02-09 19:23:09 Off the east coast of Aomori     10 3.51  
2023-02-11 12:16:35 Off the southeast coast of Nemuro Peninsula     40 3.31  
2023-02-11 19:44:59 Off the southeast coast of Mie     350 3.9Unkn 
2023-02-12 07:13:09 Off the coast of Sanriku     10 3.61  
2023-02-13 03:44:31 Off the coast of Iwate     110 3.62  
2023-02-13 10:02:42 Off the coast of Fukushima     40 4.73  
2023-02-13 20:43:25 Near the coast of Tanegashima     50 3.72  
2023-02-14 03:18:55 Off the coast of Kushiro     30 4.62  
2023-02-15 08:28:32 Off the coast of Fukushima     70 3.41  
2023-02-15 10:27:16 Off the coast of Miyagi     40 3.62  
2023-02-16 21:20:20 Off the coast of Iwate     30 3.61  
2023-02-17 10:46:33 Near the coast of Okinawa     20 53  
2023-02-17 12:59:46 Off the coast of Iwate     10 4.32  
2023-02-17 19:38:45 Off the coast of Northwest Fukuoka     10 3.82  
2023-02-18 07:09:20 Off the coast of Miyagi     20 3.51  
2023-02-19 12:12:17 Hyuganada     10 3.82  
2023-02-19 17:50:18 Off the coast of Fukushima     60 4.42  
2023-02-20 04:58:12 Near the coast of Amami Oshima     10 4.21  
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
2025 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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