J1 Earthquake Early Warning
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Quake Time Epicenter Latitude Longitude Depth Mag Intensity Remarks
00:48:00 JST 01 Mar 2023 Chiba-Northeastern 50 4.1 35.7 N 140.6 E2 No tsunami alerts
02:21:00 JST 02 Mar 2023 Off the coast of Ibaraki 90 3.7 36.0 N 140.8 E1 No tsunami alerts
08:27:00 JST 02 Mar 2023 Off the coast of Ibaraki 40 3.6 36.3 N 141.0 E1 No tsunami alerts
15:14:00 JST 02 Mar 2023 Off the east coast of Hokkaido 40 4.5 43.3 N 146.8 E2 No tsunami alerts
15:21:00 JST 02 Mar 2023 Off the coast of Miyagi 50 3.5 38.9 N 142.1 E1 No tsunami alerts
15:47:00 JST 02 Mar 2023 Off the coast of Hachijojima 10 5.1 33.2 N 139.4 E3 No tsunami alerts
15:51:00 JST 02 Mar 2023 Northern Wakayama 10 2.8 34.2 N 135.3 E1 No tsunami alerts
17:51:00 JST 02 Mar 2023 Off the coast of Hachijojima 10 4.4 33.2 N 139.5 E1 No tsunami alerts
21:01:00 JST 02 Mar 2023 Off the coast of Miyagi 40 3.8 38.8 N 142.4 E1 No tsunami alerts
11:10:00 JST 03 Mar 2023 Off the coast of Fukushima 50 3.9 37.7 N 141.6 E1 No tsunami alerts
11:35:00 JST 03 Mar 2023 Near the coast of Okinawa Island 20 3.3 26.5 N 127.2 E1 No tsunami alerts
19:18:00 JST 03 Mar 2023 Off the coast of Hachijojima 30 3.9 33.2 N 139.6 E2 No tsunami alerts
04:31:00 JST 04 Mar 2023 Near Iriomotejima 20 3.4 24.2 N 123.8 E2 No tsunami alerts
08:54:00 JST 04 Mar 2023 Chiba-Northwestern 70 3.4 35.7 N 140.2 E1 No tsunami alerts
10:21:00 JST 04 Mar 2023 Near Izu-Oshima Island 0 2.7 34.8 N 139.3 E2 No tsunami alerts
10:45:00 JST 04 Mar 2023 Near Izu-Oshima Island 10 2.9 34.8 N 139.2 E2 No tsunami alerts
11:45:00 JST 04 Mar 2023 Near Izu-Oshima Island 10 2.6 34.8 N 139.2 E1 No tsunami alerts
14:20:00 JST 04 Mar 2023 Ibaraki-North 10 2.8 36.7 N 140.6 E1 No tsunami alerts
16:51:00 JST 04 Mar 2023 Kagoshima Satsuma 10 2.7 32.0 N 130.2 E1 No tsunami alerts
07:54:00 JST 05 Mar 2023 20 2.9 34.9 N 138.4 E2 No tsunami alerts
17:12:00 JST 05 Mar 2023 Off the coast of Niigata Chuetsu 10 3.6 37.5 N 137.9 E1 No tsunami alerts
01:57:00 JST 06 Mar 2023 Near the coast of Niijima / Kouzujima 10 3.4 34.2 N 139.3 E1 No tsunami alerts
02:41:00 JST 06 Mar 2023 Near the coast of Okinawa Island 10 3.1 26.3 N 127.7 E1 No tsunami alerts
16:44:00 JST 06 Mar 2023 Kagoshima Satsuma 10 2.6 32.0 N 130.2 E1 No tsunami alerts
18:10:00 JST 06 Mar 2023 10 2.5 32.9 N 130.5 E1 No tsunami alerts
07:24:00 JST 07 Mar 2023 Off the coast of Kushiro 70 5.0 42.5 N 144.6 E3 No tsunami alerts
21:13:00 JST 07 Mar 2023 Aichi-East 10 3.3 35.1 N 137.7 E2 No tsunami alerts
22:48:00 JST 08 Mar 2023 Ibaraki-South 60 3.4 36.2 N 140.1 E2 No tsunami alerts
01:55:00 JST 09 Mar 2023 Akita Northern Inland 10 2.1 40.0 N 140.4 E1 No tsunami alerts
08:15:00 JST 09 Mar 2023 Oita-Central 110 3.3 33.4 N 131.6 E1 No tsunami alerts
17:17:00 JST 09 Mar 2023 Kii Channel 50 3.3 33.8 N 135.2 E1 No tsunami alerts
23:14:00 JST 09 Mar 2023 Off the southeast coast of Chiba 50 4.4 34.6 N 141.2 E1 No tsunami alerts
13:57:00 JST 10 Mar 2023 Ishikari-South 10 2.6 42.9 N 141.8 E2 No tsunami alerts
18:42:00 JST 10 Mar 2023 Chiba-South 10 3.2 35.2 N 140.2 E1 No tsunami alerts
05:12:00 JST 11 Mar 2023 Hidaka-East 60 4.8 42.2 N 143.0 E4 No tsunami alerts
05:13:00 JST 11 Mar 2023 Chiba-Northwestern 70 4.2 35.7 N 140.0 E3 No tsunami alerts
08:39:00 JST 12 Mar 2023 Off the coast of NW Okinawa Main Island 90 4.2 26.8 N 126.9 E2 No tsunami alerts
10:06:00 JST 12 Mar 2023 Nemuro-Central 130 3.7 43.5 N 145.1 E1 No tsunami alerts
10:38:00 JST 12 Mar 2023 Off the east coast of Aomori 60 3.4 41.5 N 142.0 E1 No tsunami alerts
20:21:00 JST 12 Mar 2023 West Kanagawa 10 2.8 35.3 N 139.1 E2 No tsunami alerts
22:42:00 JST 12 Mar 2023 Ibaraki-North 10 3.6 36.8 N 140.6 E1 No tsunami alerts
22:43:00 JST 12 Mar 2023 Ibaraki-North 10 3.2 36.8 N 140.6 E1 No tsunami alerts
05:25:00 JST 13 Mar 2023 Off the coast of Iwate 90 3.9 39.6 N 142.3 E1 No tsunami alerts
19:03:00 JST 13 Mar 2023 Nagano-South 10 2.4 35.9 N 137.6 E1 No tsunami alerts
03:42:00 JST 14 Mar 2023 Fukui-Reihoku 10 3.2 36.1 N 136.4 E2 No tsunami alerts
04:03:00 JST 14 Mar 2023 Ishakawa Noto 10 3.0 37.5 N 137.2 E1 No tsunami alerts
04:29:00 JST 14 Mar 2023 Ibaraki-North 10 4.0 36.8 N 140.6 E2 No tsunami alerts
05:35:00 JST 14 Mar 2023 Iwate Northern Coast 70 4.0 39.8 N 141.7 E2 No tsunami alerts
13:05:00 JST 14 Mar 2023 Near the coast of Chichijima 0 4.4 26.6 N 142.6 E2 No tsunami alerts
13:36:00 JST 14 Mar 2023 Off the coast of Miyagi 60 4.2 37.9 N 141.8 E1 No tsunami alerts
20:23:00 JST 14 Mar 2023 Off the east coast of Chiba 30 2.9 35.7 N 140.9 E1 No tsunami alerts
23:43:00 JST 14 Mar 2023 Near the coast of Yonagunijima 50 3.6 24.3 N 123.0 E1 No tsunami alerts
03:28:00 JST 15 Mar 2023 Off the east coast of Chiba 30 3.2 35.7 N 140.9 E1 No tsunami alerts
04:09:00 JST 15 Mar 2023 Off the east coast of Chiba 30 3.0 35.7 N 140.9 E1 No tsunami alerts
06:05:00 JST 15 Mar 2023 Ibaraki-South 50 4.1 36.1 N 139.9 E3 No tsunami alerts
06:39:00 JST 15 Mar 2023 Chiba-Northwestern 70 3.8 35.5 N 140.1 E2 No tsunami alerts
20:22:00 JST 15 Mar 2023 Wakayama-South 30 2.8 33.9 N 135.5 E1 No tsunami alerts
09:56:00 JST 16 Mar 2023 0 7.1 30.2 N 175.9 EUnkn
15:00:00 JST 16 Mar 2023 Fukushima-Aizu 10 2.6 37.6 N 140.1 E1 No tsunami alerts
13:40:00 JST 18 Mar 2023 Fukushima-Nakadori 10 2.5 37.1 N 140.5 E1 No tsunami alerts
18:01:00 JST 18 Mar 2023 Ishakawa Noto 10 3.0 37.5 N 137.2 E1 No tsunami alerts
20:08:00 JST 18 Mar 2023 Ibaraki-South 70 3.7 36.3 N 140.0 E2 No tsunami alerts
15:06:00 JST 19 Mar 2023 Aichi-West 40 3.1 35.2 N 137.4 E2 No tsunami alerts
17:18:00 JST 19 Mar 2023 Ishakawa Noto 10 2.6 37.5 N 137.3 E1 No tsunami alerts
20:00:00 JST 19 Mar 2023 Off the coast of Fukushima 60 4.1 37.8 N 141.8 E1 No tsunami alerts
06:36:00 JST 20 Mar 2023 Near the coast of Amami Oshima 20 3.3 28.2 N 129.4 E1 No tsunami alerts
10:37:00 JST 20 Mar 2023 Ishakawa Noto 10 3.5 37.5 N 137.2 E2 No tsunami alerts
10:59:00 JST 20 Mar 2023 Off the east coast of Chiba 40 4.7 35.5 N 141.1 E2 No tsunami alerts
12:46:00 JST 20 Mar 2023 Ishakawa Noto 10 2.3 37.5 N 137.2 E1 No tsunami alerts
01:22:00 JST 21 Mar 2023 Northern Wakayama 10 2.3 34.2 N 135.3 E1 No tsunami alerts
03:52:00 JST 21 Mar 2023 Nagano-Central 10 3.4 36.3 N 138.0 E2 No tsunami alerts
06:28:00 JST 21 Mar 2023 Hidaka-East 80 4.0 42.3 N 143.0 E1 No tsunami alerts
04:54:00 JST 22 Mar 2023 Hyuganada 10 3.9 32.3 N 132.1 E1 No tsunami alerts
10:46:00 JST 22 Mar 2023 Off the NE coast of Amami Oshima 40 4.3 29.3 N 130.5 E1 No tsunami alerts
16:36:00 JST 22 Mar 2023 Off the coast of Iwate 10 5.4 40.3 N 143.0 E2 No tsunami alerts
17:23:00 JST 22 Mar 2023 Off the coast of Iwate 10 4.3 40.2 N 143.0 E1 No tsunami alerts
04:32:00 JST 23 Mar 2023 Off the coast of Fukushima 30 3.9 37.0 N 141.3 E1 No tsunami alerts
18:47:00 JST 23 Mar 2023 10 3.2 32.6 N 130.7 E2 No tsunami alerts
20:29:00 JST 23 Mar 2023 10 2.6 32.6 N 130.7 E1 No tsunami alerts
04:37:00 JST 24 Mar 2023 Nagano-Central 0 2.3 36.2 N 137.6 E1 No tsunami alerts
08:16:00 JST 24 Mar 2023 Shimane-East 10 3.0 35.3 N 133.1 E1 No tsunami alerts
13:05:00 JST 24 Mar 2023 Ishakawa Noto 10 3.2 37.5 N 137.2 E1 No tsunami alerts
16:25:00 JST 24 Mar 2023 Ibaraki-North 80 4.7 36.4 N 140.3 E4 No tsunami alerts
16:41:00 JST 24 Mar 2023 Northern Wakayama 10 3.0 34.3 N 135.4 E2 No tsunami alerts
17:20:00 JST 24 Mar 2023 Off the coast of Fukushima 70 4.2 37.8 N 141.8 E2 No tsunami alerts
00:55:00 JST 25 Mar 2023 Ishakawa Noto 10 3.1 37.5 N 137.2 E1 No tsunami alerts
07:14:00 JST 25 Mar 2023 Bungo channel 50 3.4 33.2 N 132.3 E2 No tsunami alerts
04:26:00 JST 26 Mar 2023 Kamikawa-North 10 2.2 44.8 N 142.1 E1 No tsunami alerts
08:20:00 JST 26 Mar 2023 Off the coast of Fukushima 40 3.7 37.2 N 141.5 E1 No tsunami alerts
23:33:00 JST 26 Mar 2023 Off the coast of Miyagi 60 4.4 38.3 N 141.6 E2 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
20:03:00 JST 27 Mar 2023 Off the coast of Fukushima 50 3.8 37.2 N 141.4 E2 No tsunami alerts
01:02:00 JST 28 Mar 2023 Ibaraki-North 10 2.9 36.7 N 140.6 E1 No tsunami alerts
04:00:00 JST 28 Mar 2023 Shizuoka-West 30 3.3 34.7 N 137.8 E1 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
03:48:00 JST 29 Mar 2023 Ishakawa Noto 10 4.1 37.5 N 137.3 E3 No tsunami alerts
12:42:00 JST 29 Mar 2023 Ishakawa Noto 10 3.4 37.5 N 137.3 E3 No tsunami alerts
17:39:00 JST 29 Mar 2023 Ishakawa Noto 10 3.5 37.5 N 137.3 E3 No tsunami alerts
23:10:00 JST 29 Mar 2023 Off the coast of Noto Peninsula 10 2.9 37.5 N 137.1 E1 No tsunami alerts
23:40:00 JST 29 Mar 2023 Off the coast of Noto Peninsula 10 2.9 37.5 N 137.1 E1 No tsunami alerts
00:01:00 JST 30 Mar 2023 Off the coast of Noto Peninsula 10 3.3 37.5 N 137.1 E1 No tsunami alerts
03:06:00 JST 30 Mar 2023 Ishakawa Noto 10 2.7 37.5 N 137.2 E1 No tsunami alerts
03:14:00 JST 30 Mar 2023 Off the coast of Noto Peninsula 10 2.9 37.5 N 137.1 E1 No tsunami alerts
06:44:00 JST 30 Mar 2023 Near the coast of Chichijima 50 5.0 28.4 N 141.8 E1 No tsunami alerts
06:31:00 JST 31 Mar 2023 Wakayama-South 60 3.3 33.9 N 135.4 E1 No tsunami alerts
14:52:00 JST 31 Mar 2023 Near the coast of Chichijima 0 5.7 27.0 N 141.5 E2 No tsunami alerts
18:13:00 JST 31 Mar 2023 Ishakawa Noto 10 2.8 37.5 N 137.2 E1 No tsunami alerts
19:54:00 JST 31 Mar 2023 Near the coast of Chichijima 80 5.4 26.9 N 142.5 E3 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
2025 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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