J1 Earthquake Early Warning
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Quake Time Epicenter Latitude Longitude Depth Mag Intensity Remarks
06:21:00 JST 01 Oct 2023 Off the east coast of Aomori 50 3.4 40.6 N 142.4 E1 No tsunami alerts
07:17:00 JST 01 Oct 2023 Fukushima-Nakadori 10 2.2 37.1 N 140.5 E1 No tsunami alerts
08:48:00 JST 01 Oct 2023 Off the coast of Ibaraki 50 3.4 36.7 N 141.0 E1 No tsunami alerts
13:25:00 JST 01 Oct 2023 Off the coast of Miyagi 50 4.0 38.6 N 141.9 E2 No tsunami alerts
13:45:00 JST 01 Oct 2023 Ibaraki-South 70 3.2 36.3 N 140.0 E1 No tsunami alerts
17:53:00 JST 01 Oct 2023 Near the coast of Miyakojima 30 3.9 24.7 N 125.2 E1 No tsunami alerts
19:37:00 JST 01 Oct 2023 Ibaraki-South 50 3.4 36.1 N 139.9 E1 No tsunami alerts
04:56:00 JST 02 Oct 2023 Hyuganada 40 3.0 32.7 N 132.0 E1 No tsunami alerts
08:31:00 JST 02 Oct 2023 Northern Wakayama 10 2.7 34.2 N 135.2 E1 No tsunami alerts
21:31:00 JST 02 Oct 2023 Near Izu-Oshima Island 10 2.9 34.8 N 139.3 E1 No tsunami alerts
21:57:00 JST 02 Oct 2023 Near Izu-Oshima Island 10 2.8 34.8 N 139.3 E1 No tsunami alerts
22:26:00 JST 02 Oct 2023 Tochigi-South 120 4.1 36.7 N 139.9 E2 No tsunami alerts
01:32:00 JST 03 Oct 2023 Off the coast of Ibaraki 50 3.5 36.4 N 140.7 E2 No tsunami alerts
08:53:00 JST 03 Oct 2023 Rumoi-North Central 10 2.8 44.2 N 142.0 E1 No tsunami alerts
12:43:00 JST 03 Oct 2023 Near Izu-Oshima Island 10 2.5 34.8 N 139.4 E1 No tsunami alerts
16:30:00 JST 03 Oct 2023 Near Izu-Oshima Island 10 3.0 34.8 N 139.3 E2 No tsunami alerts
20:38:00 JST 03 Oct 2023 Near the coast of Torishima 40 6.3 30.0 N 140.8 E1 No tsunami alerts
21:28:00 JST 03 Oct 2023 Ishakawa Noto 10 3.1 37.5 N 137.2 E1 No tsunami alerts
04:20:00 JST 04 Oct 2023 Gifu-Hida 20 2.9 36.1 N 137.4 E2 No tsunami alerts
12:52:00 JST 04 Oct 2023 Iwate Northern Coast 80 3.4 40.3 N 141.6 E1 No tsunami alerts
17:46:00 JST 04 Oct 2023 Nagano-South 10 2.6 35.9 N 137.8 E1 No tsunami alerts
00:47:00 JST 05 Oct 2023 Off the east coast of Chiba 40 3.2 35.5 N 140.9 E1 No tsunami alerts
02:01:00 JST 05 Oct 2023 Tokushima-North 50 3.5 34.0 N 134.6 E1 No tsunami alerts
09:59:00 JST 05 Oct 2023 Near Iriomotejima 20 4.1 24.2 N 123.4 E1 No tsunami alerts
10:59:00 JST 05 Oct 2023 Near the coast of Torishima 10 6.6 29.8 N 139.8 EUnknTsunami alert issued
17:08:00 JST 05 Oct 2023 Ishikari-Central 20 2.4 43.1 N 141.4 E2 No tsunami alerts
07:52:00 JST 06 Oct 2023 Near the coast of Amami Oshima 10 3.6 28.1 N 129.1 E1 No tsunami alerts
10:31:00 JST 06 Oct 2023 Near the coast of Torishima 10 6.3 30.0 N 139.9 EUnkn
16:44:00 JST 06 Oct 2023 Off the coast of Fukushima 60 4.0 37.2 N 141.2 E3 No tsunami alerts
05:59:00 JST 07 Oct 2023 Gifu-Hida 10 2.9 36.0 N 137.5 E1 No tsunami alerts
17:34:00 JST 07 Oct 2023 0 7.0 5.7 N 146.1 EUnkn
21:58:00 JST 07 Oct 2023 10 3.7 34.6 N 130.9 E1 No tsunami alerts
23:26:00 JST 07 Oct 2023 Off the coast of Iwate 40 4.9 40.1 N 142.4 E3 No tsunami alerts
01:34:00 JST 08 Oct 2023 Iyonada 50 3.5 33.7 N 132.3 E1 No tsunami alerts
02:04:00 JST 08 Oct 2023 Near the coast of Tokara Islands 0 2.5 29.9 N 130.0 E2 No tsunami alerts
19:49:00 JST 08 Oct 2023 Chiba-Northwestern 70 3.5 35.7 N 140.1 E1 No tsunami alerts
23:12:00 JST 08 Oct 2023 Gifu-Hida 10 3.3 36.0 N 137.5 E3 No tsunami alerts
02:41:00 JST 09 Oct 2023 Near the coast of Okinawa Island 60 3.5 26.9 N 127.9 E1 No tsunami alerts
05:25:00 JST 09 Oct 2023 Near the coast of Torishima 0 0.0 29.7 N 139.9 EUnknTsunami alert issued
08:18:00 JST 09 Oct 2023 Northern Wakayama 70 3.5 34.1 N 135.5 E2 No tsunami alerts
13:52:00 JST 09 Oct 2023 West Kanagawa 20 3.2 35.5 N 139.2 E1 No tsunami alerts
14:09:00 JST 09 Oct 2023 Near Kunashir 170 5.3 44.5 N 146.4 E2 No tsunami alerts
14:32:00 JST 09 Oct 2023 Kyoto-South 10 3.0 35.0 N 135.5 E2 No tsunami alerts
14:36:00 JST 09 Oct 2023 Kyoto-South 10 2.3 35.0 N 135.5 E1 No tsunami alerts
19:33:00 JST 09 Oct 2023 Mie-Northern 20 2.5 34.9 N 136.4 E1 No tsunami alerts
23:42:00 JST 09 Oct 2023 Oshima-West 10 3.1 41.5 N 140.2 E3 No tsunami alerts
03:42:00 JST 10 Oct 2023 Off the coast of Fukushima 80 3.5 37.4 N 141.3 E1 No tsunami alerts
11:20:00 JST 10 Oct 2023 Gifu-Hida 10 3.1 36.0 N 137.5 E2 No tsunami alerts
18:24:00 JST 10 Oct 2023 Shiga-North 10 2.8 35.3 N 136.0 E1 No tsunami alerts
03:21:00 JST 11 Oct 2023 Ishakawa Noto 10 3.5 37.5 N 137.3 E2 No tsunami alerts
04:29:00 JST 11 Oct 2023 Gifu-Hida 10 2.6 36.0 N 137.5 E1 No tsunami alerts
20:22:00 JST 11 Oct 2023 Ishakawa Noto 10 2.4 37.5 N 137.2 E1 No tsunami alerts
22:29:00 JST 11 Oct 2023 Ibaraki-North 10 2.8 36.8 N 140.6 E1 No tsunami alerts
23:10:00 JST 11 Oct 2023 Off the east coast of Aomori 50 3.8 40.6 N 142.4 E1 No tsunami alerts
15:47:00 JST 12 Oct 2023 Off the coast of Fukushima 50 3.9 37.8 N 141.8 E2 No tsunami alerts
17:18:00 JST 12 Oct 2023 Shiga-North 10 3.0 35.4 N 136.4 E1 No tsunami alerts
17:37:00 JST 12 Oct 2023 Near the coast of Amami Oshima 30 3.4 28.3 N 130.0 E1 No tsunami alerts
18:55:00 JST 12 Oct 2023 Off the coast of Miyagi 60 4.1 37.9 N 141.8 E1 No tsunami alerts
03:39:00 JST 13 Oct 2023 Near the coast of Tokara Islands 20 3.3 29.3 N 129.4 E3 No tsunami alerts
07:33:00 JST 13 Oct 2023 Off the southeast coast of Iturup 0 5.0 44.1 N 149.1 E1 No tsunami alerts
14:14:00 JST 13 Oct 2023 Ishakawa Noto 10 2.8 37.5 N 137.2 E1 No tsunami alerts
16:54:00 JST 13 Oct 2023 Rumoi-South 10 3.3 44.1 N 142.0 E3 No tsunami alerts
18:59:00 JST 13 Oct 2023 170 4.8 41.0 N 140.3 E2 No tsunami alerts
05:57:00 JST 14 Oct 2023 Fukushima-Aizu 10 2.2 37.0 N 139.4 E2 No tsunami alerts
11:29:00 JST 14 Oct 2023 Off the east coast of Aomori 60 4.6 41.5 N 142.1 E3 No tsunami alerts
16:53:00 JST 14 Oct 2023 Near Taiwan 30 5.1 24.0 N 122.3 E1 No tsunami alerts
17:14:00 JST 14 Oct 2023 Near Sado 10 2.9 38.0 N 138.3 E1 No tsunami alerts
18:46:00 JST 14 Oct 2023 Off the coast of NW Okinawa Main Island 100 4.0 27.5 N 127.8 E1 No tsunami alerts
06:16:00 JST 15 Oct 2023 Northern Wakayama 10 2.2 34.0 N 135.3 E1 No tsunami alerts
08:22:00 JST 16 Oct 2023 Aichi-West 40 3.2 34.9 N 137.0 E1 No tsunami alerts
09:54:00 JST 16 Oct 2023 Akita Northern Inland 0 3.2 40.0 N 140.7 E1 No tsunami alerts
14:11:00 JST 16 Oct 2023 Tochigi-North 10 3.1 36.9 N 139.7 E2 No tsunami alerts
19:42:00 JST 16 Oct 2023 Near the coast of Miyakojima 40 6.0 25.1 N 125.6 E4
20:22:00 JST 16 Oct 2023 Near the coast of Miyakojima 30 4.1 25.3 N 125.7 E1 No tsunami alerts
22:22:00 JST 16 Oct 2023 Near the coast of Miyakojima 30 4.2 25.2 N 125.6 E1 No tsunami alerts
22:30:00 JST 16 Oct 2023 Near the coast of Miyakojima 30 4.6 25.2 N 125.6 E2 No tsunami alerts
22:53:00 JST 16 Oct 2023 Near the coast of Miyakojima 30 4.2 25.2 N 125.5 E1 No tsunami alerts
05:50:00 JST 17 Oct 2023 Near the coast of Miyakojima 30 4.6 25.2 N 125.6 E2 No tsunami alerts
22:34:00 JST 17 Oct 2023 Gifu-Hida 10 2.8 36.0 N 137.5 E2 No tsunami alerts
00:39:00 JST 18 Oct 2023 Off the coast of Iwate 40 3.3 40.2 N 142.2 E1 No tsunami alerts
20:44:00 JST 18 Oct 2023 Okayama-South 20 2.8 34.8 N 133.6 E1 No tsunami alerts
23:09:00 JST 18 Oct 2023 Tokushima-North 40 2.8 34.1 N 134.5 E1 No tsunami alerts
01:27:00 JST 19 Oct 2023 Off the coast of Kushiro 60 3.8 42.8 N 145.1 E1 No tsunami alerts
09:47:00 JST 19 Oct 2023 Tsugaru Strait 10 3.0 41.7 N 141.0 E3 No tsunami alerts
11:52:00 JST 19 Oct 2023 Off the coast of Miyagi 50 3.4 38.9 N 141.9 E1 No tsunami alerts
12:51:00 JST 19 Oct 2023 Near the coast of Okinawa Island 10 4.9 26.0 N 128.6 E1 No tsunami alerts
03:28:00 JST 20 Oct 2023 Off the NE coast of Amami Oshima 50 3.7 29.3 N 130.0 E1 No tsunami alerts
05:36:00 JST 20 Oct 2023 Off the east coast of Chiba 60 2.6 35.4 N 140.4 E1 No tsunami alerts
11:50:00 JST 20 Oct 2023 Toyama Bay 10 3.1 37.4 N 137.3 E2 No tsunami alerts
14:44:00 JST 20 Oct 2023 Abashiri 0 3.1 43.6 N 143.8 E1 No tsunami alerts
16:12:00 JST 20 Oct 2023 10 2.6 32.9 N 131.0 E1 No tsunami alerts
17:01:00 JST 20 Oct 2023 Gunma-South 20 2.6 36.3 N 139.2 E1 No tsunami alerts
05:00:00 JST 21 Oct 2023 Shimane-West 20 3.1 34.5 N 131.8 E1 No tsunami alerts
05:55:00 JST 21 Oct 2023 Off the coast of Fukushima 20 4.1 36.9 N 141.2 E2 No tsunami alerts
10:49:00 JST 21 Oct 2023 Ibaraki-North 60 3.2 36.4 N 140.6 E1 No tsunami alerts
18:32:00 JST 21 Oct 2023 Off the coast of Uraga 60 3.9 41.9 N 142.3 E1 No tsunami alerts
23:10:00 JST 21 Oct 2023 Off the coast of Noto Peninsula 10 2.5 37.6 N 137.3 E1 No tsunami alerts
13:24:00 JST 22 Oct 2023 Ibaraki-North 70 3.5 36.7 N 140.6 E1 No tsunami alerts
14:56:00 JST 22 Oct 2023 Chiba-Northeastern 50 3.3 35.7 N 140.6 E1 No tsunami alerts
21:48:00 JST 22 Oct 2023 Off the coast of Iwate 40 4.2 40.4 N 142.1 E2 No tsunami alerts
23:13:00 JST 22 Oct 2023 Near the coast of Okinawa Island 50 3.9 27.3 N 128.3 E2 No tsunami alerts
02:57:00 JST 23 Oct 2023 Kii Channel 30 3.5 33.6 N 134.5 E2 No tsunami alerts
08:11:00 JST 23 Oct 2023 Chiba-Northeastern 50 3.4 35.7 N 140.7 E1 No tsunami alerts
13:49:00 JST 23 Oct 2023 Aichi-West 40 3.8 35.2 N 136.7 E2 No tsunami alerts
15:53:00 JST 23 Oct 2023 Near the coast of Chichijima 130 4.3 27.6 N 142.7 E1 No tsunami alerts
20:28:00 JST 23 Oct 2023 Near the coast of Miyakojima 50 4.2 24.8 N 125.4 E2 No tsunami alerts
22:47:00 JST 23 Oct 2023 Ibaraki-North 10 2.7 36.7 N 140.6 E1 No tsunami alerts
01:01:00 JST 24 Oct 2023 Off the east coast of Hokkaido 0 4.7 43.8 N 147.5 E1 No tsunami alerts
05:05:00 JST 24 Oct 2023 Kushiro-South Central 90 3.7 43.1 N 145.0 E1 No tsunami alerts
07:50:00 JST 24 Oct 2023 Near the coast of Amami Oshima 20 2.9 28.3 N 129.4 E1 No tsunami alerts
08:05:00 JST 24 Oct 2023 Near the coast of Yonagunijima 20 5.9 24.0 N 122.6 E3 No tsunami alerts
11:54:00 JST 24 Oct 2023 Near the coast of Yonagunijima 10 4.9 23.9 N 122.6 E1 No tsunami alerts
14:58:00 JST 24 Oct 2023 Ishakawa Noto 10 3.1 37.5 N 137.3 E1 No tsunami alerts
21:29:00 JST 24 Oct 2023 West Kanagawa 170 4.4 35.4 N 139.0 E2 No tsunami alerts
23:53:00 JST 24 Oct 2023 Abashiri 10 3.5 43.6 N 143.8 E1 No tsunami alerts
01:04:00 JST 25 Oct 2023 Off the coast of Fukushima 20 3.6 36.9 N 141.3 E1 No tsunami alerts
06:16:00 JST 25 Oct 2023 Ibaraki-South 60 3.3 36.2 N 140.0 E1 No tsunami alerts
08:50:00 JST 25 Oct 2023 Off the coast of Noto Peninsula 10 3.6 37.6 N 137.3 E1 No tsunami alerts
19:35:00 JST 25 Oct 2023 Off the coast of Kushiro 50 3.7 42.8 N 145.1 E1 No tsunami alerts
21:58:00 JST 25 Oct 2023 Kyoto-South 10 2.6 35.1 N 135.7 E1 No tsunami alerts
02:41:00 JST 26 Oct 2023 Off the coast of Ibaraki 10 3.5 35.9 N 141.0 E1 No tsunami alerts
02:41:00 JST 26 Oct 2023 Off the coast of Miyagi 60 3.7 38.5 N 141.7 E1 No tsunami alerts
03:48:00 JST 26 Oct 2023 10 1.9 38.4 N 140.0 E1 No tsunami alerts
12:45:00 JST 26 Oct 2023 Gifu Mino Midwest 10 3.2 35.5 N 136.8 E1 No tsunami alerts
11:03:00 JST 27 Oct 2023 Tokushima-South 10 2.7 33.9 N 134.5 E1 No tsunami alerts
01:28:00 JST 28 Oct 2023 Ibaraki-North 110 3.7 36.4 N 140.2 E2 No tsunami alerts
01:40:00 JST 28 Oct 2023 Wakayama-South 50 3.3 33.8 N 135.6 E1 No tsunami alerts
13:24:00 JST 28 Oct 2023 Nagano-South 10 2.6 35.9 N 137.6 E1 No tsunami alerts
15:25:00 JST 28 Oct 2023 Fukushima-Aizu 10 2.1 37.1 N 139.4 E1 No tsunami alerts
22:25:00 JST 28 Oct 2023 Ishakawa Noto 10 3.1 37.5 N 137.2 E1 No tsunami alerts
11:13:00 JST 29 Oct 2023 Off the coast of Iwate 30 4.4 39.0 N 142.5 E2 No tsunami alerts
11:25:00 JST 29 Oct 2023 Off the coast of Iwate 30 4.4 39.0 N 142.5 E2 No tsunami alerts
17:57:00 JST 29 Oct 2023 Ishakawa Noto 10 2.7 37.5 N 137.2 E1 No tsunami alerts
22:12:00 JST 29 Oct 2023 Fukushima-Hamadori 90 3.6 37.2 N 140.9 E1 No tsunami alerts
08:38:00 JST 30 Oct 2023 Near the coast of Okinawa Island 80 4.1 26.5 N 126.9 E2 No tsunami alerts
22:35:00 JST 30 Oct 2023 Osaka-South 10 2.6 34.3 N 135.2 E1 No tsunami alerts
13:48:00 JST 31 Oct 2023 Hyuganada 30 3.2 31.6 N 131.6 E1 No tsunami alerts
17:27:00 JST 31 Oct 2023 Off the east coast of Chiba 60 3.3 35.4 N 140.4 E1 No tsunami alerts
23:00:00 JST 31 Oct 2023 10 3.6 36.2 N 136.0 E2 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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