J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2020-01-03 03:23:54 Off the east coast of Chiba     30 5.85 Lower  
2020-03-30 17:15:11 Off the east coast of Chiba     10 4.84  
2020-05-11 08:58:33 Off the coast of Ibaraki     50 5.44  
2020-05-18 12:00:38 Off the coast of Miyagi     50 4.84  
2020-05-23 04:33:07 Near the coast of Okinawa     50 5.34  
2020-05-26 04:38:12 Near the coast of Tanegashima     10 4.84  
2020-05-27 18:19:53 Near the coast of Miyakojima     30 5.24  
2020-05-31 03:13:49 Off the coast of Tokachi     100 5.74  
2020-06-04 05:31:18 Off the coast of Ibaraki     60 5.34  
2020-06-14 00:51:26 Off the northwest coast of Amami Oshima     130 6.24  
2020-06-25 04:47:46 Off the east coast of Chiba     30 5.85 Lower  
2020-07-29 05:33:23 Off the coast of Ibaraki     20 4.44  
2020-09-12 11:44:10 Off the coast of Miyagi     40 5.34  
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