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 15:47:39 Hachijo-jima     10 5.13  
2023-03-02 16:18:56 Off the south coast of Yakayama     10 4.41  
2023-03-02 17:51:50 Hachijo-jima     10 4.32  
2023-03-02 17:51:50 Hachijo-jima     10 4.12  
2023-03-02 21:01:05 Off the coast of Miyagi     40 3.82  
2023-03-03 11:10:24 Off the coast of Fukushima     50 3.52  
2023-03-03 19:18:53 Hachijo-jima     30 42  
2023-03-06 01:57:14 Niijima-Kozu     10 3.62  
2023-03-06 09:46:31 Enshu     370 3.5Unkn 
2023-03-06 13:13:30 Near Kunashir     150 3.31  
2023-03-07 06:07:26 Tomakomai Bay     140 3.72  
2023-03-07 07:24:47 Off the coast of Kushiro     70 4.83  
2023-03-07 07:57:15 Off the coast of Kushiro     20 3.71  
2023-03-08 17:32:15 Near the coast of Torishima     450 3.8Unkn 
2023-03-09 23:14:07 Off the southeast coast of Chiba     50 4.32  
2023-03-12 08:39:19 Near the coast of Okinawa     70 4.22  
2023-03-13 05:25:33 Off the coast of Iwate     90 3.62  
2023-03-13 06:17:53 Off the northeast coast of Amami Oshima     60 4.11  
2023-03-14 13:05:56 Near the coast of Chichijima     10 4.42  
2023-03-14 13:36:45 Off the coast of Fukushima     60 3.52  
2023-03-19 20:00:44 Off the coast of Fukushima     60 3.52  
2023-03-20 21:06:21 Off the coast of Ibaraki     10 4.42  
2023-03-22 12:19:09 Off the southeast coast of Mie     400 4.1Unkn 
2023-03-22 16:36:57 Off the coast of Sanriku     10 5.43  
2023-03-22 17:23:44 Off the coast of Iwate     10 3.61  
2023-03-26 23:33:03 Off the coast of Miyagi     60 4.43  
2023-03-27 00:04:20 Off the coast of Miyagi     50 54  
2023-03-27 20:03:29 Off the coast of Fukushima     50 3.41  
2023-03-28 18:18:28 Off the east coast of Aomori     40 5.94  
2023-03-29 17:53:57 Off the west coast of Satsuma Peninsula     10 52  
2023-03-30 01:43:16 Off the coast of Kushiro     70 3.81  
2023-03-31 14:51:56 Off the west coast of Ogasawara Islands     10 5.92  
2023-03-31 19:54:36 Off the west coast of Ogasawara Islands     10 5.62  
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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