J1 Earthquake Early Warning
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Quake Time Epicenter Latitude Longitude Depth Mag Intensity Remarks
00:29:00 JST 01 Apr 2023 Off the east coast of Aomori 20 4.7 41.2 N 142.9 E2 No tsunami alerts
04:33:00 JST 01 Apr 2023 Off the coast of Miyagi 40 4.3 38.7 N 142.1 E2 No tsunami alerts
05:28:00 JST 01 Apr 2023 Near the coast of Okinawa Island 40 3.0 27.4 N 128.7 E1 No tsunami alerts
06:06:00 JST 01 Apr 2023 Off the east coast of Chiba 10 3.7 35.7 N 140.8 E2 No tsunami alerts
07:46:00 JST 01 Apr 2023 Near the coast of Tokara Islands 10 2.5 29.9 N 130.0 E1 No tsunami alerts
18:41:00 JST 01 Apr 2023 Off the coast of Niigata Kaetsu 10 5.0 38.3 N 138.9 E3 No tsunami alerts
18:44:00 JST 01 Apr 2023 Off the coast of Niigata Kaetsu 10 3.9 38.3 N 138.9 E1 No tsunami alerts
19:03:00 JST 01 Apr 2023 Nagano-North 10 2.2 36.7 N 138.4 E1 No tsunami alerts
22:19:00 JST 01 Apr 2023 Miyagi-North 10 2.6 38.7 N 141.1 E1 No tsunami alerts
22:23:00 JST 01 Apr 2023 10 2.9 32.7 N 130.6 E2 No tsunami alerts
22:48:00 JST 01 Apr 2023 Fukushima-Aizu 10 2.9 37.7 N 140.0 E1 No tsunami alerts
22:57:00 JST 01 Apr 2023 Off the coast of Miyagi 50 4.2 38.2 N 141.7 E2 No tsunami alerts
13:14:00 JST 02 Apr 2023 Off the coast of Ibaraki 20 4.2 36.3 N 141.5 E1 No tsunami alerts
16:40:00 JST 02 Apr 2023 Ishakawa Noto 10 3.2 37.5 N 137.2 E1 No tsunami alerts
17:34:00 JST 02 Apr 2023 Ibaraki-North 60 3.9 36.5 N 140.6 E2 No tsunami alerts
22:07:00 JST 02 Apr 2023 Near the coast of Chichijima 50 3.9 27.0 N 142.7 E1 No tsunami alerts
23:17:00 JST 02 Apr 2023 Off the coast of Miyagi 60 4.1 38.3 N 141.7 E1 No tsunami alerts
03:04:00 JST 03 Apr 2023 0 7.3 4.3 N 143.2 EUnknNo tsunami alerts
05:39:00 JST 03 Apr 2023 Ishakawa Noto 10 2.9 37.5 N 137.2 E1 No tsunami alerts
10:12:00 JST 03 Apr 2023 Near the coast of Chichijima 70 4.3 27.0 N 142.3 E1 No tsunami alerts
14:48:00 JST 03 Apr 2023 Near the coast of Chichijima 80 3.9 26.9 N 142.2 E1 No tsunami alerts
21:44:00 JST 03 Apr 2023 10 2.3 33.0 N 131.0 E1 No tsunami alerts
06:41:00 JST 04 Apr 2023 Near the coast of Chichijima 0 4.9 26.9 N 141.5 E2 No tsunami alerts
06:58:00 JST 04 Apr 2023 Kii Channel 10 2.5 34.2 N 135.1 E1 No tsunami alerts
12:53:00 JST 04 Apr 2023 Ibaraki-North 100 3.6 36.2 N 140.4 E1 No tsunami alerts
14:04:00 JST 04 Apr 2023 Gifu-Hida 10 2.0 36.0 N 137.5 E1 No tsunami alerts
16:07:00 JST 04 Apr 2023 Near the coast of Chichijima 20 5.3 26.9 N 142.9 E3 No tsunami alerts
16:11:00 JST 04 Apr 2023 Off the coast of Miyagi 50 4.0 38.2 N 141.7 E2 No tsunami alerts
19:50:00 JST 04 Apr 2023 Near the coast of Chichijima 80 4.1 27.0 N 141.8 E1 No tsunami alerts
23:00:00 JST 04 Apr 2023 Near the coast of Tanegashima 30 4.1 30.6 N 131.2 E2 No tsunami alerts
00:15:00 JST 05 Apr 2023 Off the coast of Kushiro 60 4.1 42.8 N 145.1 E2 No tsunami alerts
02:28:00 JST 05 Apr 2023 Near the coast of Chichijima 80 3.9 27.0 N 141.9 E1 No tsunami alerts
04:03:00 JST 05 Apr 2023 Off the coast of Shikoku 30 3.2 32.7 N 132.7 E1 No tsunami alerts
06:24:00 JST 05 Apr 2023 Aichi-West 40 3.9 35.1 N 137.3 E2 No tsunami alerts
08:33:00 JST 05 Apr 2023 Near the coast of Tokara Islands 0 3.1 29.7 N 129.9 E3 No tsunami alerts
14:06:00 JST 05 Apr 2023 Chiba-Northwestern 100 3.6 35.5 N 140.1 E1 No tsunami alerts
23:10:00 JST 05 Apr 2023 Near the coast of Chichijima 10 4.5 27.0 N 142.9 E1 No tsunami alerts
12:57:00 JST 06 Apr 2023 Near the coast of Chichijima 40 4.4 27.0 N 141.6 E1 No tsunami alerts
13:10:00 JST 06 Apr 2023 Off the southeast coast of Iturup 110 4.8 44.1 N 147.8 E1 No tsunami alerts
14:15:00 JST 06 Apr 2023 Near the coast of Tokara Islands 10 2.4 29.9 N 130.0 E1 No tsunami alerts
19:07:00 JST 06 Apr 2023 Ishakawa Noto 10 3.1 37.5 N 137.2 E1 No tsunami alerts
07:09:00 JST 07 Apr 2023 Near the coast of Chichijima 10 4.9 27.0 N 141.5 E1 No tsunami alerts
13:46:00 JST 07 Apr 2023 10 3.5 32.5 N 130.7 E3 No tsunami alerts
21:14:00 JST 07 Apr 2023 Near the coast of Chichijima 70 4.1 27.0 N 142.5 E1 No tsunami alerts
21:46:00 JST 07 Apr 2023 Off the coast of Ibaraki 80 4.0 36.7 N 141.3 E2 No tsunami alerts
04:21:00 JST 08 Apr 2023 10 2.4 32.2 N 130.8 E1 No tsunami alerts
05:57:00 JST 08 Apr 2023 Off the coast of Fukushima 90 3.7 37.1 N 141.0 E1 No tsunami alerts
08:58:00 JST 08 Apr 2023 Near the coast of Chichijima 80 4.0 27.0 N 141.9 E1 No tsunami alerts
15:01:00 JST 08 Apr 2023 Saitama-North 60 3.8 36.1 N 139.5 E2 No tsunami alerts
20:59:00 JST 08 Apr 2023 Ishakawa Noto 10 3.2 37.5 N 137.3 E1 No tsunami alerts
00:40:00 JST 09 Apr 2023 Hidaka-East 60 3.7 42.3 N 143.0 E1 No tsunami alerts
02:11:00 JST 09 Apr 2023 Abashiri 0 2.7 43.8 N 144.0 E2 No tsunami alerts
03:52:00 JST 09 Apr 2023 Tokushima-North 10 2.4 34.0 N 134.5 E1 No tsunami alerts
10:11:00 JST 09 Apr 2023 0 2.3 32.7 N 130.7 E1 No tsunami alerts
11:51:00 JST 09 Apr 2023 Aichi-West 40 3.8 35.1 N 137.3 E2 No tsunami alerts
03:45:00 JST 10 Apr 2023 Near the coast of Yonagunijima 50 5.0 24.3 N 123.0 E3 No tsunami alerts
04:11:00 JST 10 Apr 2023 Kushiro-North 10 1.9 43.6 N 144.5 E1 No tsunami alerts
05:05:00 JST 10 Apr 2023 Fukushima-Nakadori 80 3.1 37.2 N 140.5 E1 No tsunami alerts
15:03:00 JST 10 Apr 2023 Near the coast of Okinawa Island 60 3.2 26.3 N 127.3 E1 No tsunami alerts
16:07:00 JST 10 Apr 2023 Shiga-North 10 2.8 35.3 N 135.9 E1 No tsunami alerts
20:05:00 JST 10 Apr 2023 Ishakawa Noto 10 3.3 37.5 N 137.2 E1 No tsunami alerts
04:56:00 JST 11 Apr 2023 Chuetsu, Niigata 20 2.3 37.4 N 138.8 E1 No tsunami alerts
22:10:00 JST 10 Apr 2023 0 0.0 56.7 N 161.4 EUnkn
09:09:00 JST 11 Apr 2023 Near the coast of Chichijima 60 4.5 27.0 N 142.7 E1 No tsunami alerts
00:38:00 JST 12 Apr 2023 Off the coast of Tokachi 100 4.3 42.6 N 143.8 E2 No tsunami alerts
00:44:00 JST 12 Apr 2023 Near the coast of Chichijima 0 4.2 27.0 N 141.6 E1 No tsunami alerts
05:10:00 JST 12 Apr 2023 Chiba-Northwestern 70 3.8 35.7 N 140.1 E2 No tsunami alerts
05:18:00 JST 12 Apr 2023 Gifu Mino Midwest 10 2.7 35.8 N 137.1 E1 No tsunami alerts
12:54:00 JST 12 Apr 2023 Shimane-East 10 3.9 35.2 N 132.7 E3 No tsunami alerts
15:20:00 JST 12 Apr 2023 Ibaraki-North 70 3.1 36.6 N 140.4 E1 No tsunami alerts
16:37:00 JST 12 Apr 2023 Off the coast of Ibaraki 30 2.8 36.4 N 140.8 E1 No tsunami alerts
17:45:00 JST 12 Apr 2023 Off the coast of Fukushima 40 4.1 37.1 N 141.2 E3 No tsunami alerts
05:28:00 JST 13 Apr 2023 Off the coast of Ibaraki 50 3.6 36.2 N 140.9 E2 No tsunami alerts
06:54:00 JST 13 Apr 2023 Northern Wakayama 10 2.4 34.0 N 135.3 E2 No tsunami alerts
08:12:00 JST 13 Apr 2023 Near Kunashir 90 3.7 43.5 N 145.9 E1 No tsunami alerts
15:35:00 JST 13 Apr 2023 Off the coast of Tokachi 90 3.5 42.6 N 143.8 E1 No tsunami alerts
22:24:00 JST 13 Apr 2023 Near the coast of Chichijima 50 4.2 26.9 N 142.7 E1 No tsunami alerts
23:33:00 JST 13 Apr 2023 Aichi-West 40 3.4 35.3 N 136.9 E1 No tsunami alerts
02:36:00 JST 14 Apr 2023 Ishakawa Noto 10 3.1 37.5 N 137.2 E1 No tsunami alerts
03:08:00 JST 14 Apr 2023 Chuetsu, Niigata 10 2.5 36.8 N 138.7 E2 No tsunami alerts
10:04:00 JST 14 Apr 2023 Near the coast of Chichijima 0 4.2 27.0 N 141.5 E1 No tsunami alerts
11:10:00 JST 14 Apr 2023 Off the coast of Fukushima 60 3.8 37.6 N 141.5 E1 No tsunami alerts
18:55:00 JST 14 Apr 2023 590 7.0 6.0 N 112.0 EUnknNo tsunami alerts
00:53:00 JST 15 Apr 2023 Off the coast of Kushiro 40 3.3 42.9 N 145.5 E1 No tsunami alerts
00:59:00 JST 15 Apr 2023 Okayama-North 10 3.1 35.1 N 133.4 E2 No tsunami alerts
07:25:00 JST 15 Apr 2023 Off the east coast of Chiba 0 3.0 35.8 N 140.9 E1 No tsunami alerts
09:23:00 JST 15 Apr 2023 Off the SE coast of Nemuro Peninsula 50 3.7 43.1 N 145.6 E2 No tsunami alerts
11:40:00 JST 15 Apr 2023 Off the coast of Iwate 50 4.4 39.1 N 142.4 E2 No tsunami alerts
15:14:00 JST 16 Apr 2023 Kii Channel 40 3.4 33.7 N 135.1 E1 No tsunami alerts
17:42:00 JST 16 Apr 2023 Near the coast of Tokara Islands 0 2.3 29.9 N 130.1 E1 No tsunami alerts
20:48:00 JST 16 Apr 2023 Off the east coast of Osumi Peninsula 40 3.1 31.5 N 131.5 E1 No tsunami alerts
00:45:00 JST 17 Apr 2023 10 3.5 32.7 N 130.6 E3 No tsunami alerts
02:25:00 JST 17 Apr 2023 Off the coast of Fukushima 50 4.6 37.2 N 141.4 E4 No tsunami alerts
07:16:00 JST 17 Apr 2023 Nagano-South 10 3.3 36.0 N 137.6 E3 No tsunami alerts
14:36:00 JST 17 Apr 2023 Off the coast of Fukushima 50 3.5 37.5 N 141.4 E1 No tsunami alerts
17:03:00 JST 18 Apr 2023 Near the coast of Okinawa Island 50 3.2 26.7 N 127.8 E1 No tsunami alerts
21:56:00 JST 18 Apr 2023 Near the coast of Tokara Islands 10 2.0 29.8 N 129.9 E1 No tsunami alerts
09:37:00 JST 19 Apr 2023 Ishakawa Noto 10 3.2 37.5 N 137.2 E1 No tsunami alerts
02:23:00 JST 20 Apr 2023 Kii Channel 10 2.8 34.0 N 135.1 E1 No tsunami alerts
09:42:00 JST 20 Apr 2023 Near the coast of Chichijima 0 4.4 26.9 N 141.5 E1 No tsunami alerts
12:33:00 JST 20 Apr 2023 Ishakawa Noto 10 3.3 37.5 N 137.3 E3 No tsunami alerts
03:07:00 JST 21 Apr 2023 Kyoto-South 10 2.5 35.0 N 135.5 E1 No tsunami alerts
13:46:00 JST 21 Apr 2023 Nagano-South 10 1.5 36.0 N 137.6 E1 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
17:16:00 JST 21 Apr 2023 Gifu Mino Midwest 10 3.2 35.4 N 136.8 E2 No tsunami alerts
20:25:00 JST 21 Apr 2023 Off the coast of Miyagi 60 3.6 38.7 N 141.9 E1 No tsunami alerts
21:42:00 JST 21 Apr 2023 Off the coast of Iwate 50 3.9 40.3 N 142.5 E1 No tsunami alerts
01:09:00 JST 22 Apr 2023 Near the coast of Ishigakijima 100 4.4 24.9 N 123.5 E1 No tsunami alerts
10:41:00 JST 22 Apr 2023 Off the coast of Fukushima 20 4.2 37.2 N 141.4 E2 No tsunami alerts
14:30:00 JST 22 Apr 2023 Off the coast of Ibaraki 50 3.4 36.4 N 140.7 E2 No tsunami alerts
19:42:00 JST 22 Apr 2023 Tomakomai Bay 0 2.4 41.8 N 141.2 E2 No tsunami alerts
20:54:00 JST 22 Apr 2023 Ishakawa Noto 10 2.5 37.5 N 137.3 E2 No tsunami alerts
12:29:00 JST 23 Apr 2023 Okayama-North 10 2.7 34.9 N 134.0 E1 No tsunami alerts
21:45:00 JST 23 Apr 2023 Northern Wakayama 10 2.8 34.0 N 135.3 E2 No tsunami alerts
23:45:00 JST 23 Apr 2023 Fukushima-Aizu 0 1.8 37.0 N 139.3 E1 No tsunami alerts
00:42:00 JST 24 Apr 2023 Off the coast of Miyagi 70 3.8 37.9 N 141.7 E1 No tsunami alerts
01:09:00 JST 24 Apr 2023 Off the coast of Ibaraki 50 3.5 36.7 N 141.1 E1 No tsunami alerts
06:22:00 JST 24 Apr 2023 Ehime-Nanyo 40 3.6 33.5 N 132.7 E1 No tsunami alerts
06:33:00 JST 24 Apr 2023 Near the coast of Chichijima 40 4.3 26.4 N 141.9 E2 No tsunami alerts
09:42:00 JST 24 Apr 2023 0 7.3 30.4 N 176.7 EUnkn
11:35:00 JST 24 Apr 2023 Northern Wakayama 10 2.6 34.0 N 135.3 E2 No tsunami alerts
17:35:00 JST 24 Apr 2023 Sea of Ariake 0 2.7 32.8 N 130.6 E1 No tsunami alerts
00:29:00 JST 25 Apr 2023 Gifu Mino Midwest 10 2.6 35.4 N 136.9 E1 No tsunami alerts
05:00:00 JST 25 Apr 2023 0 7.1 0.8 N 98.5 EUnkn
08:31:00 JST 25 Apr 2023 Hyuganada 10 2.6 32.3 N 132.2 E1 No tsunami alerts
14:31:00 JST 25 Apr 2023 Fukushima-Aizu 10 2.5 37.0 N 139.4 E2 No tsunami alerts
21:59:00 JST 25 Apr 2023 Northern Wakayama 10 2.9 34.0 N 135.3 E2 No tsunami alerts
22:31:00 JST 25 Apr 2023 Off the coast of Iwate 50 4.1 40.0 N 142.0 E2 No tsunami alerts
02:49:00 JST 26 Apr 2023 Off the coast of Fukushima 60 4.3 37.7 N 141.7 E2 No tsunami alerts
16:52:00 JST 26 Apr 2023 Off the coast of Uraga 70 3.9 42.1 N 142.5 E1 No tsunami alerts
04:17:00 JST 27 Apr 2023 Ibaraki-South 50 3.5 36.1 N 140.1 E2 No tsunami alerts
09:40:00 JST 27 Apr 2023 Off the coast of Ibaraki 20 3.1 36.1 N 140.8 E1 No tsunami alerts
10:40:00 JST 27 Apr 2023 Off the coast of Uraga 50 3.6 41.6 N 142.0 E1 No tsunami alerts
16:43:00 JST 27 Apr 2023 Near the coast of Okinawa Island 10 5.4 26.1 N 128.7 E2 No tsunami alerts
22:43:00 JST 27 Apr 2023 Off the coast of Fukushima 50 4.2 37.0 N 141.2 E2 No tsunami alerts
07:08:00 JST 28 Apr 2023 Near the coast of Okinawa Island 40 4.3 26.4 N 128.3 E2 No tsunami alerts
09:38:00 JST 28 Apr 2023 Oshima-West 10 3.0 41.5 N 140.2 E3 No tsunami alerts
13:49:00 JST 28 Apr 2023 Gunma-South 10 2.4 36.5 N 139.4 E1 No tsunami alerts
16:45:00 JST 28 Apr 2023 Off the coast of Uraga 70 4.1 42.0 N 142.6 E1 No tsunami alerts
02:16:00 JST 29 Apr 2023 Amakusanada 10 3.6 32.4 N 129.9 E2 No tsunami alerts
04:54:00 JST 29 Apr 2023 Tokushima-North 40 3.1 34.0 N 133.9 E1 No tsunami alerts
09:16:00 JST 29 Apr 2023 Amakusanada 10 3.5 32.4 N 129.9 E2 No tsunami alerts
00:49:00 JST 30 Apr 2023 Near the coast of Okinawa Island 10 4.5 26.0 N 128.8 E1 No tsunami alerts
01:19:00 JST 30 Apr 2023 Ishakawa Noto 10 3.0 37.5 N 137.3 E1 No tsunami alerts
06:23:00 JST 30 Apr 2023 Fukushima-Aizu 10 2.2 37.1 N 139.4 E2 No tsunami alerts
18:52:00 JST 30 Apr 2023 Gifu Mino Eastern 0 3.7 35.6 N 137.2 E3 No tsunami alerts
20:36:00 JST 30 Apr 2023 Fukushima-Aizu 0 2.3 37.1 N 139.3 E2 No tsunami alerts
21:21:00 JST 30 Apr 2023 Off the east coast of Chiba 40 4.2 35.6 N 141.0 E1 No tsunami alerts
23:48:00 JST 30 Apr 2023 Near the coast of Tokara Islands 0 2.4 29.9 N 130.0 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
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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