J1 Earthquake Early Warning
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Quake Time Epicenter Latitude Longitude Depth Mag Intensity Remarks
08:58:00 JST 01 Feb 2023 Near the coast of Okinawa Island 70 3.1 26.5 N 127.1 E1 No tsunami alerts
11:57:00 JST 02 Feb 2023 Off the SE coast of Nemuro Peninsula 90 4.0 43.3 N 146.0 E1 No tsunami alerts
18:18:00 JST 02 Feb 2023 Off the coast of Miyagi 40 3.4 38.9 N 142.1 E1 No tsunami alerts
01:33:00 JST 03 Feb 2023 Near the coast of Chichijima 0 4.4 27.0 N 141.6 E1 No tsunami alerts
02:58:00 JST 03 Feb 2023 Off the coast of Miyagi 50 4.0 38.6 N 141.8 E2 No tsunami alerts
16:13:00 JST 05 Feb 2023 Saitama-South 80 3.5 35.9 N 139.8 E1 No tsunami alerts
03:53:00 JST 06 Feb 2023 Off the coast of Fukushima 50 3.9 37.5 N 141.5 E1 No tsunami alerts
05:52:00 JST 06 Feb 2023 10 2.8 32.7 N 130.7 E2 No tsunami alerts
10:17:00 JST 06 Feb 2023 0 7.8 37.2 N 37.0 EUnknNo tsunami alerts
14:21:00 JST 06 Feb 2023 0 1.7 35.0 N 139.0 E1 No tsunami alerts
19:24:00 JST 06 Feb 2023 0 7.5 38.0 N 37.2 EUnknNo tsunami alerts
01:55:00 JST 07 Feb 2023 Off the coast of Fukushima 50 3.8 37.7 N 141.6 E1 No tsunami alerts
09:58:00 JST 07 Feb 2023 Northern Wakayama 10 2.6 34.1 N 135.3 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