J1 Earthquake Early Warning
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Quake Time Epicenter Latitude Longitude Depth Mag Intensity Remarks
21:48 JST 10 Jan 2013 Fukushima-ken Oki 40 km 5.0 37.5 N 141.5 E4 No tsunami alerts
12:17 JST 13 Jan 2013 Iwate-ken Oki 50 km 4.8 39.1 N 142.3 E4 No tsunami alerts
06:34 JST 24 Jan 2013 Nemuro-hanto Nanto-oki 70 km 5.2 43.1 N 145.9 E4 No tsunami alerts
05:57 JST 28 Jan 2013 Okinawa-honto Kinkai 50 km 4.9 27.3 N 128.4 E4 No tsunami alerts
23:53 JST 31 Jan 2013 Ibaraki-ken Hokubu 10 km 4.7 36.7 N 140.6 E5 lower No tsunami alerts
23:17 JST 02 Feb 2013 Tokachi-chiho Chubu 120 km 6.4 42.7 N 143.3 E5 upper Intensity correction
11:21 JST 13 Feb 2013 Miyagi-ken Oki 60 km 4.7 38.4 N 141.9 E4 No tsunami alerts
16:23 JST 25 Feb 2013 Tochigi-ken Hokubu 10 km 6.2 36.9 N 139.4 E5 upper No tsunami alerts
16:34 JST 25 Feb 2013 Tochigi-ken Hokubu very shallow 4.7 36.9 N 139.4 E4 No tsunami alerts
16:23 JST 25 Feb 2013 Tochigi-ken Hokubu 10 km 6.2 36.9 N 139.4 E5 upper Intensity correction
22:00 JST 25 Feb 2013 Tochigi-ken Hokubu 10 km 3.4 36.8 N 139.4 E4 No tsunami alerts
05:32 JST 06 Mar 2013 Okinawa-honto Kinkai 50 km 5.0 27.3 N 128.5 E4 Intensity correction
06:53 JST 18 Mar 2013 Ibaraki-ken Hokubu 60 km 4.5 36.5 N 140.6 E4 No tsunami alerts
16:46 JST 31 Mar 2013 Miyagi-ken Oki 50 km 5.3 38.9 N 142.1 E4 No tsunami alerts
01:58 JST 04 Apr 2013 Ishikawa-ken Kaga-chiho 10 km 4.3 36.7 N 136.8 E4 No tsunami alerts
13:42 JST 04 Apr 2013 Chiba-ken Toho-oki 10 km 5.3 35.8 N 141.0 E4 No tsunami alerts
13:42 JST 04 Apr 2013 Chiba-ken Toho-oki 10 km 5.3 35.8 N 141.0 E4 Intensity correction
05:33 JST 13 Apr 2013 Awajishima Fukin 10 km 6.0 34.4 N 134.8 E6 lower  
05:33 JST 13 Apr 2013 Awajishima Fukin 10 km 6.0 34.4 N 134.8 E6 lower Intensity correction
22:25 JST 14 Apr 2013 Fukushima-ken Oki 50 km 5.2 37.5 N 141.4 E4 No tsunami alerts
22:25 JST 14 Apr 2013 Fukushima-ken Oki 50 km 5.2 37.5 N 141.4 E4 Intensity correction
17:57 JST 17 Apr 2013 Miyakejima Kinkai 20 km 6.2 34.1 N 139.4 E5 upper  
23:11 JST 19 Apr 2013 Chiba-ken Toho-oki 10 km 4.7 35.7 N 140.9 E4 No tsunami alerts
19:27 JST 21 Apr 2013 Fukushima-ken Nakadori 10 km 4.2 37.4 N 140.1 E4 No tsunami alerts
22:04 JST 02 May 2013 Gumma-ken Nambu 10 km 4.3 36.5 N 139.4 E4 No tsunami alerts
08:46 JST 16 May 2013 Iwate-ken Oki 10 km 5.1 40.4 N 141.9 E4 No tsunami alerts
14:48 JST 18 May 2013 Fukushima-ken Oki 50 km 5.9 37.7 N 141.6 E5 upper Intensity correction
17:33 JST 04 Jun 2013 Fukushima-ken Oki 40 km 4.8 37.2 N 141.5 E4 No tsunami alerts
20:39 JST 08 Jun 2013 Wakayama-ken Hokubu very shallow 4.0 34.2 N 135.2 E4 No tsunami alerts
16:13 JST 27 Jun 2013 Tochigi-ken Hokubu 10 km 3.8 37.0 N 139.8 E4 No tsunami alerts
00:21 JST 10 Jul 2013 Sagami-wan 10 km 3.9 35.1 N 139.1 E4 No tsunami alerts
14:22 JST 10 Jul 2013 Iwate-ken Engan-hokubu 80 km 5.0 39.6 N 141.6 E4 No tsunami alerts
14:22 JST 10 Jul 2013 Iwate-ken Engan-hokubu 80 km 5.0 39.6 N 141.6 E4 Intensity correction
07:46 JST 16 Jul 2013 Iwate-ken Oki 70 km 5.3 39.6 N 142.3 E4 No tsunami alerts
23:09 JST 16 Jul 2013 Nemuro-hanto Nanto-oki 50 km 5.1 43.0 N 145.5 E4 No tsunami alerts
12:02 JST 23 Jul 2013 Fukushima-ken Hamadori 10 km 5.2 37.1 N 140.7 E4 No tsunami alerts
12:29 JST 04 Aug 2013 Miyagi-ken Oki 50 km 6.0 38.1 N 141.8 E5 upper Intensity correction
09:19 JST 04 Sep 2013 Torishima Kinkai 400 km 6.9 29.8 N 139.0 E4 Intensity correction
09:04 JST 09 Sep 2013 Ibaraki-ken Hokubu 10 km 4.4 36.7 N 140.6 E4 No tsunami alerts
07:43 JST 15 Sep 2013 Fukushima-ken Aizu 10 km 3.6 37.7 N 140.0 E4 No tsunami alerts
22:37 JST 30 Sep 2013 Ibaraki-ken Oki 50 km 4.4 36.7 N 141.0 E4 No tsunami alerts
22:37 JST 30 Sep 2013 Ibaraki-ken Oki 50 km 4.4 36.7 N 141.0 E4 Intensity correction
07:46 JST 10 Oct 2013 Iwate-ken Oki 50 km 4.3 40.1 N 142.1 E4 No tsunami alerts
00:14 JST 20 Oct 2013 Miyagi-ken Oki 50 km 4.9 38.2 N 141.7 E4 No tsunami alerts
02:10 JST 26 Oct 2013 Fukushima-ken Oki 10 km 7.1 37.2 N 144.6 E4 Tsunami alert issued
14:25 JST 03 Nov 2013 Ibaraki-ken Nambu 70 km 5.0 36.0 N 140.2 E4 No tsunami alerts
07:38 JST 10 Nov 2013 Ibaraki-ken Nambu 70 km 5.5 36.0 N 140.1 E5 lower Intensity correction
11:00 JST 15 Nov 2013 Aomori-ken Toho-oki 70 km 5.2 41.5 N 142.0 E4 No tsunami alerts
10:03 JST 31 Dec 2013 Ibaraki-ken Hokubu 10 km 5.4 36.7 N 140.7 E5 lower 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
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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