J1 Earthquake Early Warning
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Quake Time Epicenter Latitude Longitude Depth Mag Intensity Remarks
12:47:00 JST 13 Mar 2021 Off the coast of Ibaraki 70 3.5 36.8 N 140.9 E1 No tsunami alerts
22:23:00 JST 13 Mar 2021 Off the coast of Ibaraki 0 2.4 31.3 N 130.6 E1 No tsunami alerts
23:25:00 JST 13 Mar 2021 Ishakawa Noto 10 3.1 37.4 N 137.2 E1 No tsunami alerts
02:16:00 JST 14 Mar 2021 Off the coast of Iwate 30 4.6 40.2 N 142.5 E2 No tsunami alerts
08:52:00 JST 14 Mar 2021 Gifu-Hida 10 3.2 35.9 N 137.2 E2 No tsunami alerts
09:22:00 JST 14 Mar 2021 Gifu-Hida 10 4.4 32.7 N 130.7 E4 No tsunami alerts
10:06:00 JST 14 Mar 2021 Gifu-Hida 10 2.5 32.7 N 130.7 E1 No tsunami alerts
00:25:00 JST 15 Mar 2021 Northern Wakayama 10 4.6 34.0 N 135.2 E5 lower No tsunami alerts
00:31:00 JST 15 Mar 2021 Northern Wakayama 10 1.9 34.0 N 135.3 E1 No tsunami alerts
00:40:00 JST 15 Mar 2021 Northern Wakayama 10 2.6 34.0 N 135.3 E1 No tsunami alerts
00:59:00 JST 15 Mar 2021 Northern Wakayama 10 3.3 34.0 N 135.2 E3 No tsunami alerts
02:25:00 JST 15 Mar 2021 Northern Wakayama 10 1.9 34.0 N 135.2 E1 No tsunami alerts
06:07:00 JST 15 Mar 2021 Ibaraki-South 40 2.8 36.1 N 139.9 E1 No tsunami alerts
08:18:00 JST 15 Mar 2021 Northern Wakayama 10 2.2 34.0 N 135.3 E1 No tsunami alerts
11:37:00 JST 15 Mar 2021 Northern Wakayama 10 3.3 34.0 N 135.3 E3 No tsunami alerts
13:15:00 JST 15 Mar 2021 Ibaraki-North 60 3.2 36.5 N 140.6 E1 No tsunami alerts
15:52:00 JST 15 Mar 2021 Northern Wakayama 10 2.4 34.0 N 135.3 E1 No tsunami alerts
19:31:00 JST 15 Mar 2021 Northern Wakayama 10 2.5 31.3 N 130.6 E2 No tsunami alerts
23:08:00 JST 15 Mar 2021 Gifu-Hida 10 2.1 36.0 N 137.5 E1 No tsunami alerts
04:56:00 JST 16 Mar 2021 Ibaraki-South 50 4.8 36.2 N 139.8 E4 No tsunami alerts
06:12:00 JST 16 Mar 2021 Northern Wakayama 10 1.8 34.1 N 135.2 E1 No tsunami alerts
06:53:00 JST 16 Mar 2021 Near the coast of Amami Oshima 40 3.1 28.3 N 129.6 E1 No tsunami alerts
07:23:00 JST 16 Mar 2021 Ibaraki-South 60 3.0 36.1 N 139.8 E1 No tsunami alerts
09:04:00 JST 16 Mar 2021 Gifu Mino Midwest 20 2.6 35.4 N 136.9 E1 No tsunami alerts
16:26:00 JST 16 Mar 2021 Northern Wakayama 10 2.1 34.0 N 135.2 E1 No tsunami alerts
16:40:00 JST 16 Mar 2021 Nagano-Central 10 2.4 36.2 N 137.7 E1 No tsunami alerts
08:23:00 JST 17 Mar 2021 Off the southeast coast of Nemuro Peninsula 50 3.7 43.1 N 145.8 E2 No tsunami alerts
17:28:00 JST 17 Mar 2021 Off the coast of Fukushima 60 5.3 37.7 N 141.7 E4 No tsunami alerts
20:11:00 JST 17 Mar 2021 Off the coast of Fukushima 60 4.1 37.7 N 141.7 E2 No tsunami alerts
23:48:00 JST 17 Mar 2021 Off the coast of Miyagi 50 3.7 38.9 N 142.1 E1 No tsunami alerts
22:38:00 JST 18 Mar 2021 Toyama-East 10 3.3 36.8 N 137.5 E1 No tsunami alerts
22:49:00 JST 19 Mar 2021 Amakusanada 10 2.7 32.3 N 129.8 E1 No tsunami alerts
01:50:00 JST 20 Mar 2021 Amakusanada 10 4.0 32.5 N 130.6 E3 No tsunami alerts
02:28:00 JST 20 Mar 2021 Off the south coast of the Boso Peninsula 30 4.2 34.1 N 140.3 E1 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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