J1 Earthquake Early Warning
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Quake Time Epicenter Latitude Longitude Depth Magnitude Intensity Remarks
00:29 JST 01 Jan 2012 Niigata-ken Chuetsu-chiho 10 km 4.1 37.0 N 138.6 E4 No tsunami alerts
14:28 JST 01 Jan 2012 Torishima Kinkai 370 km 7.0 31.4 N 138.6 E4 Intensity correction
22:13 JST 05 Jan 2012 Fukushima-ken Nakadori 20 km 4.1 37.1 N 140.6 E4 No tsunami alerts
12:20 JST 12 Jan 2012 Fukushima-ken Oki 20 km 5.8 36.9 N 141.3 E4 No tsunami alerts
12:20 JST 12 Jan 2012 Fukushima-ken Oki 20 km 5.8 36.9 N 141.3 E4 Intensity correction
20:45 JST 23 Jan 2012 Fukushima-ken Oki 50 km 5.1 37.1 N 141.2 E5 lower No tsunami alerts
20:45 JST 23 Jan 2012 Fukushima-ken Oki 50 km 5.1 37.1 N 141.2 E5 lower Intensity correction
05:43 JST 26 Jan 2012 Miyagi-ken Oki 50 km 5.1 38.2 N 141.7 E4 No tsunami alerts
07:43 JST 28 Jan 2012 Yamanashi-ken Tobu-Fujigoko 20 km 5.5 35.5 N 139.0 E5 lower No tsunami alerts
07:43 JST 28 Jan 2012 Yamanashi-ken Tobu-Fujigoko 20 km 5.5 35.5 N 139.0 E5 lower Intensity correction
09:22 JST 28 Jan 2012 Iwate-ken Oki 40 km 5.6 40.2 N 142.5 E4 No tsunami alerts
14:21 JST 28 Jan 2012 Ibaraki-ken Oki 20 km 4.9 36.8 N 141.4 E4 No tsunami alerts
14:21 JST 28 Jan 2012 Ibaraki-ken Oki 20 km 4.9 36.8 N 141.4 E4 Intensity correction
16:46 JST 29 Jan 2012 Yamanashi-ken Tobu-Fujigoko 20 km 4.7 35.5 N 139.0 E4 No tsunami alerts
03:18 JST 30 Jan 2012 Hyuga-nada 30 km 4.8 32.6 N 132.0 E4 No tsunami alerts
21:01 JST 08 Feb 2012 Sado Fukin 10 km 5.7 37.9 N 138.2 E5 upper No tsunami alerts
21:01 JST 08 Feb 2012 Sado Fukin 10 km 5.7 37.9 N 138.2 E5 upper Intensity correction
21:40 JST 14 Feb 2012 Nagano-ken Hokubu 10 km 3.5 36.5 N 137.9 E4 No tsunami alerts
14:13 JST 18 Feb 2012 Chiba-ken Hokuseibu 10 km 4.2 35.6 N 140.1 E4 No tsunami alerts
14:54 JST 19 Feb 2012 Ibaraki-ken Hokubu 10 km 5.1 36.7 N 140.6 E5 lower No tsunami alerts
14:54 JST 19 Feb 2012 Ibaraki-ken Hokubu 10 km 5.1 36.7 N 140.6 E5 lower Intensity correction
14:20 JST 28 Feb 2012 Ibaraki-ken Oki 20 km 5.1 36.6 N 141.0 E4 No tsunami alerts
18:00 JST 29 Feb 2012 Fukushima-ken Oki 40 km 5.3 37.3 N 141.7 E4 No tsunami alerts
23:32 JST 29 Feb 2012 Chiba-ken Toho-oki 20 km 5.8 35.2 N 141.5 E4 No tsunami alerts
07:32 JST 01 Mar 2012 Ibaraki-ken Oki 60 km 5.4 36.5 N 140.7 E5 lower No tsunami alerts
07:32 JST 01 Mar 2012 Ibaraki-ken Oki 60 km 5.4 36.5 N 140.7 E5 lower Intensity correction
02:25 JST 10 Mar 2012 Ibaraki-ken Hokubu 10 km 5.5 36.7 N 140.7 E5 lower Intensity correction
07:58 JST 12 Mar 2012 Kumamoto-ken Kumamoto-chiho very shallow 3.9 32.9 N 130.9 E4 No tsunami alerts
18:09 JST 14 Mar 2012 Sanriku Oki 10 km 6.8 40.7 N 145.2 E4 Tsunami alert issued
21:05 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 6.1 35.8 N 141.1 E5 upper  
21:05 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 6.1 35.8 N 141.1 E5 upper Intensity correction
09:36 JST 18 Mar 2012 Iwate-ken Oki 40 km 5.0 39.1 N 142.3 E4 No tsunami alerts
20:00 JST 27 Mar 2012 Iwate-ken Oki 10 km 6.4 39.8 N 142.5 E5 lower  
20:00 JST 27 Mar 2012 Iwate-ken Oki 10 km 6.4 39.8 N 142.5 E5 lower Intensity correction
20:02 JST 27 Mar 2012 Iwate-ken Oki 10 km 5.1 39.8 N 142.3 E4 No tsunami alerts
23:04 JST 01 Apr 2012 Fukushima-ken Oki 50 km 5.9 37.1 N 141.3 E5 lower Intensity correction
20:20 JST 12 Apr 2012 Ibaraki-ken Oki 20 km 5.5 36.8 N 141.4 E4 Intensity correction
23:51 JST 12 Apr 2012 Fukushima-ken Oki 30 km 5.9 37.4 N 141.8 E4 No tsunami alerts
12:33 JST 19 Apr 2012 Fukushima-ken Oki 20 km 5.1 36.9 N 141.4 E4 No tsunami alerts
12:33 JST 19 Apr 2012 Fukushima-ken Oki 20 km 5.1 36.9 N 141.4 E4 Intensity correction
05:22 JST 25 Apr 2012 Chiba-ken Toho-oki 60 km 5.5 35.7 N 140.9 E4 No tsunami alerts
05:22 JST 25 Apr 2012 Chiba-ken Toho-oki 60 km 5.5 35.7 N 140.9 E4 Intensity correction
19:28 JST 29 Apr 2012 Chiba-ken Hokutobu 50 km 5.8 35.8 N 140.7 E5 lower Intensity correction
00:02 JST 30 Apr 2012 Iwate-ken Oki 20 km 5.6 39.7 N 142.3 E4 No tsunami alerts
01:00 JST 16 May 2012 Miyagi-ken Oki 60 km 5.0 38.3 N 141.9 E4 No tsunami alerts
01:00 JST 16 May 2012 Miyagi-ken Oki 60 km 5.0 38.3 N 141.9 E4 Intensity correction
17:19 JST 18 May 2012 Ibaraki-ken Nambu 50 km 4.8 36.2 N 139.9 E4 No tsunami alerts
17:19 JST 18 May 2012 Ibaraki-ken Nambu 50 km 4.8 36.2 N 139.9 E4 Intensity correction
01:36 JST 29 May 2012 Chiba-ken Hokuseibu 80 km 5.2 35.8 N 140.1 E4 No tsunami alerts
01:36 JST 29 May 2012 Chiba-ken Hokuseibu 80 km 5.2 35.8 N 140.1 E4 Intensity correction
17:48 JST 01 Jun 2012 Ibaraki-ken Nambu 50 km 5.2 36.1 N 139.9 E4 No tsunami alerts
17:48 JST 01 Jun 2012 Ibaraki-ken Nambu 50 km 5.2 36.1 N 139.9 E4 Intensity correction
13:07 JST 03 Jun 2012 Iwate-ken Oki 50 km 4.2 40.1 N 142.1 E4 No tsunami alerts
15:51 JST 04 Jun 2012 Miyazaki-ken Nambu-yamazoi very shallow 4.5 32.1 N 130.9 E4 No tsunami alerts
05:32 JST 18 Jun 2012 Miyagi-ken Oki 40 km 6.1 38.9 N 142.1 E4 Intensity correction
14:52 JST 28 Jun 2012 Fukushima-ken Oki 60 km 5.2 37.2 N 141.2 E4 No tsunami alerts
11:06 JST 02 Jul 2012 Iwate-ken Oki 10 km 4.2 40.0 N 142.0 E4 No tsunami alerts
11:31 JST 03 Jul 2012 Tokyo-wan 100 km 5.4 35.0 N 139.8 E4 No tsunami alerts
12:49 JST 10 Jul 2012 Nagano-ken Hokubu 20 km 5.0 36.8 N 138.4 E5 lower No tsunami alerts
23:08 JST 15 Jul 2012 Soya-chiho Nambu 10 km 4.1 44.9 N 142.3 E4 No tsunami alerts
04:31 JST 16 Jul 2012 Ibaraki-ken Nambu 50 km 4.8 36.2 N 139.8 E4 Intensity correction
06:49 JST 16 Jul 2012 Soya-chiho Nambu 10 km 4.0 44.9 N 142.2 E4 No tsunami alerts
13:42 JST 22 Jul 2012 Tokachi-chiho Nambu 50 km 5.1 42.5 N 143.0 E4 No tsunami alerts
22:19 JST 03 Aug 2012 Ibaraki-ken Nambu 50 km 4.5 36.1 N 139.9 E4 No tsunami alerts
18:56 JST 12 Aug 2012 Fukushima-ken Nakadori very shallow 4.2 37.1 N 140.6 E5 lower No tsunami alerts
08:46 JST 17 Aug 2012 Amakusa-nada very shallow 4.9 32.1 N 130.0 E4 No tsunami alerts
10:33 JST 22 Aug 2012 Tokachi-chiho Nambu 60 km 5.2 42.3 N 143.1 E4 No tsunami alerts
23:16 JST 25 Aug 2012 Tokachi-chiho Nambu 50 km 5.9 42.3 N 143.1 E5 lower No tsunami alerts
04:05 JST 30 Aug 2012 Miyagi-ken Oki 60 km 5.7 38.4 N 141.9 E5 upper No tsunami alerts
02:22 JST 14 Sep 2012 Chiba-ken Hokutobu 40 km 5.1 35.9 N 140.6 E4 Intensity correction
18:40 JST 03 Oct 2012 Miyagi-ken Oki 50 km 5.1 38.0 N 142.0 E4 No tsunami alerts
13:57 JST 12 Oct 2012 Chiba-ken Hokutobu 40 km 5.0 35.9 N 140.6 E4 No tsunami alerts
09:44 JST 17 Oct 2012 Ibaraki-ken Hokubu 10 km 4.4 36.7 N 140.6 E4 No tsunami alerts
00:01 JST 18 Oct 2012 Niigata-ken Chuetsu-chiho 10 km 4.2 37.0 N 138.7 E4 No tsunami alerts
16:05 JST 24 Oct 2012 Ibaraki-ken Oki 50 km 4.5 36.6 N 140.9 E4 No tsunami alerts
16:05 JST 24 Oct 2012 Ibaraki-ken Oki 50 km 4.5 36.6 N 140.9 E4 Intensity correction
19:32 JST 25 Oct 2012 Miyagi-ken Oki 50 km 5.6 38.3 N 141.9 E5 lower No tsunami alerts
19:32 JST 25 Oct 2012 Miyagi-ken Oki 50 km 5.6 38.3 N 141.9 E5 lower Intensity correction
07:34 JST 03 Nov 2012 Fukushima-ken Oki 30 km 5.0 37.6 N 141.8 E4 No tsunami alerts
02:42 JST 22 Nov 2012 Miyagi-ken Oki 50 km 4.8 38.5 N 141.8 E4 No tsunami alerts
05:21 JST 24 Nov 2012 Miyagi-ken Oki 60 km 5.2 38.2 N 141.8 E4 No tsunami alerts
05:31 JST 04 Dec 2012 Akita-ken Nairiku-nambu 10 km 3.9 39.6 N 140.5 E4 No tsunami alerts
13:27 JST 15 Dec 2012 Fukushima-ken Oki 60 km 5.3 37.3 N 141.4 E4 No tsunami alerts
14:46 JST 15 Dec 2012 Ibaraki-ken Oki 30 km 5.0 36.8 N 141.3 E4 No tsunami alerts
17:07 JST 21 Dec 2012 Miyagi-ken Oki 50 km 5.3 38.6 N 141.9 E4 No tsunami alerts
23:59 JST 29 Dec 2012 Miyagi-ken Oki 40 km 5.4 38.7 N 142.2 E4 No tsunami alerts
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