J1 Earthquake Early Warning
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Quake Time Epicenter Latitude Longitude Depth Mag Intensity Remarks
13:44:00 JST 06 Jan 2023 Ishakawa Noto 10 4.6 37.5 N 137.3 E4
10:00:00 JST 25 Jan 2023 Off the coast of Fukushima 50 4.9 37.6 N 141.7 E4 No tsunami alerts
22:27:00 JST 25 Feb 2023 Off the coast of Kushiro 60 6.1 42.8 N 145.1 E5 lower
05:12:00 JST 11 Mar 2023 Hidaka-East 60 4.8 42.2 N 143.0 E4 No tsunami alerts
16:25:00 JST 24 Mar 2023 Ibaraki-North 80 4.7 36.4 N 140.3 E4 No tsunami alerts
00:04:00 JST 27 Mar 2023 Off the coast of Miyagi 60 5.2 38.3 N 141.6 E4 No tsunami alerts
18:18:00 JST 28 Mar 2023 Off the east coast of Aomori 20 6.1 41.1 N 142.8 E4
02:25:00 JST 17 Apr 2023 Off the coast of Fukushima 50 4.6 37.2 N 141.4 E4 No tsunami alerts
16:19:00 JST 21 Apr 2023 Near the coast of Chichijima 10 5.6 27.0 N 141.5 E4 No tsunami alerts
14:42:00 JST 05 May 2023 Ishakawa Noto 10 6.3 37.5 N 137.3 E6 upper
14:53:00 JST 05 May 2023 Ishakawa Noto 10 4.7 37.5 N 137.2 E4
21:58:00 JST 05 May 2023 Ishakawa Noto 10 5.8 37.5 N 137.2 E5 upper
23:18:00 JST 05 May 2023 Ishakawa Noto 10 4.5 37.5 N 137.2 E4 No tsunami alerts
02:47:00 JST 06 May 2023 Off the east coast of Aomori 70 5.5 41.5 N 142.1 E4 No tsunami alerts
05:14:00 JST 09 May 2023 Ishakawa Noto 10 4.9 37.5 N 137.3 E4
07:14:00 JST 10 May 2023 10 5.0 37.6 N 137.3 E4
04:16:00 JST 11 May 2023 Chiba-South 40 5.4 35.2 N 140.2 E5 upper
12:11:00 JST 11 May 2023 Near the coast of Tokara Islands 20 4.4 29.9 N 130.0 E4 No tsunami alerts
18:52:00 JST 11 May 2023 Hidaka-East 50 5.4 42.3 N 143.0 E4 No tsunami alerts
16:10:00 JST 13 May 2023 Near the coast of Tokara Islands 10 5.1 29.9 N 130.0 E5 lower
06:56:00 JST 19 May 2023 Bungo channel 50 4.4 33.2 N 132.2 E4 No tsunami alerts
16:42:00 JST 22 May 2023 Near the coast of Niijima / Kouzujima 10 5.3 34.5 N 139.2 E5 lower
19:46:00 JST 22 May 2023 Near the coast of Niijima / Kouzujima 10 5.1 34.5 N 139.3 E4 No tsunami alerts
19:03:00 JST 26 May 2023 Off the east coast of Chiba 50 6.2 35.6 N 140.7 E5 lower
22:52:00 JST 27 May 2023 Near the coast of Tokara Islands 10 4.7 29.9 N 130.0 E4 No tsunami alerts
17:49:00 JST 30 May 2023 10 4.5 37.5 N 137.4 E4
11:28:00 JST 01 Jun 2023 Near the coast of Tokara Islands 10 4.4 29.9 N 130.0 E4 No tsunami alerts
18:54:00 JST 11 Jun 2023 Off the coast of Uraga 140 6.2 42.5 N 142.0 E5 lower
21:24:00 JST 16 Jun 2023 Chiba-Northeastern 50 4.9 35.7 N 140.7 E4 No tsunami alerts
10:52:00 JST 22 Jul 2023 Off the coast of Ibaraki 50 4.8 36.5 N 140.8 E4 No tsunami alerts
21:14:00 JST 22 Jul 2023 Hyuganada 40 4.9 32.6 N 132.2 E4 No tsunami alerts
09:14:00 JST 11 Aug 2023 Off the east coast of Aomori 20 5.9 41.2 N 142.9 E4 No tsunami alerts
18:28:00 JST 08 Sep 2023 Off the coast of Miyagi 50 5.5 38.9 N 142.1 E4 No tsunami alerts
02:28:00 JST 09 Sep 2023 Off the NW coast of Amami Oshima 20 5.0 29.6 N 128.5 E4 No tsunami alerts
00:01:00 JST 11 Sep 2023 Near the coast of Tokara Islands 30 5.3 29.3 N 129.2 E4 No tsunami alerts
04:33:00 JST 19 Sep 2023 Off the coast of Miyagi 60 5.5 38.5 N 141.6 E4
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