J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2023-03-02 02:21:31 Off the coast of Ibaraki     80 3.52  
2023-03-02 15:47:42 Hachijo-jima     10 5.34  
2023-03-02 16:18:59 Off the south coast of Yakayama     10 3.51  
2023-03-02 17:51:50 Hachijo-jima     10 42  
2023-03-02 17:51:54 Hachijo-jima     10 3.73  
2023-03-02 21:01:02 Off the coast of Miyagi     10 3.61  
2023-03-03 11:10:24 Off the coast of Fukushima     50 3.52  
2023-03-03 19:18:55 Hachijo-jima     10 3.93  
2023-03-06 01:57:14 Niijima-Kozu     10 3.62  
2023-03-06 09:46:28 Enshu     410 3.7Unkn 
2023-03-06 13:13:27 Near Kunashir     170 3.6Unkn 
2023-03-07 06:07:26 Tomakomai Bay     140 3.72  
2023-03-07 07:24:46 Off the coast of Kushiro     40 4.72  
2023-03-07 07:57:15 Off the coast of Kushiro     20 3.61  
2023-03-08 17:32:14 Near the coast of Torishima     460 3.8Unkn 
2023-03-09 23:14:07 Off the southeast coast of Chiba     70 3.51  
2023-03-12 08:39:19 Near the coast of Okinawa     70 4.22  
2023-03-12 10:06:02 Near Kunashir     150 3.62  
2023-03-13 05:25:32 Off the coast of Iwate     100 3.62  
2023-03-13 06:17:52 Off the northeast coast of Amami Oshima     50 3.91  
2023-03-14 13:05:56 Near the coast of Chichijima     10 4.4Unkn 
2023-03-14 13:36:46 Off the coast of Miyagi     40 3.72  
2023-03-19 20:00:45 Off the coast of Fukushima     60 3.52  
2023-03-20 21:06:22 Off the coast of Ibaraki     10 4.42  
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