J1 Earthquake Early Warning
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Quake Time Epicenter     Depth Magnitude Intensity Remarks
2025-04-01 02:37:31 Near the coast of Miyakojima     40 3.62  
2025-04-01 14:41:47 Off the southeast coast of Nemuro Peninsula     90 4.22  
2025-04-01 18:02:15 Near the coast of Yonagunijima     10 3.92  
2025-04-01 21:33:39 Ibaraki-South     110 4.43  
2025-04-02 02:01:46 Near the coast of Miyakojima     40 3.52  
2025-04-02 08:59:53 Near the coast of Okinawa     30 4.72  
2025-04-02 13:35:31 Near the coast of Okinawa     10 4.32  
2025-04-02 23:03:59 Off the east coast of Osumi Peninsula     40 5.94  
2025-04-02 23:13:32 Off the east coast of Osumi Peninsula     30 3.82  
2025-04-03 06:42:53 Off the east coast of Osumi Peninsula     30 4.42  
2025-04-05 04:15:43 Tsugaru Strait     10 3.72  
2025-04-05 06:12:22 Off the east coast of Aomori     60 3.82  
2025-04-07 09:52:13 Off the coast of Ibaraki     30 53  
2025-04-07 12:08:24 Iwate Southern Inland     10 3.52  
2025-04-08 19:26:12 Aichi-West     40 4.63  
2025-04-09 00:26:37 Near the coast of Yonagunijima     100 5.44  
2025-04-09 09:10:17 Off the coast of Iwate     50 3.72  
2025-04-09 10:53:29 Near Taiwan     50 4.82  
2025-04-09 13:52:41 Near the coast of Yonagunijima     20 3.72  
2025-04-10 08:33:20 Iwate Southern Coast     70 4.43  
2025-04-10 10:13:09 Off the coast of Fukushima     60 4.23  
2025-04-10 21:09:56 Ibaraki-North     70 3.52  
2025-04-11 08:59:23 Near the coast of Yonagunijima     10 4.32  
2025-04-11 14:06:16 Off the northeast coast of Amami Oshima     10 5.32  
2025-04-11 14:41:27 Off the northeast coast of Amami Oshima     10 4.82  
2025-04-11 16:49:27 Near Iriomotejima     50 4.12  
2025-04-12 20:34:43 Ishikawa-Noto     10 3.63  
2025-04-14 05:38:08 Off the east coast of Osumi Peninsula     10 3.92  
2025-04-14 08:08:08 Off the coast of Miyagi     80 3.82  
2025-04-14 09:54:16 Aoimori Tsugaru-South     10 4.13  
2025-04-15 22:14:26 Off the west coast of Ishikawa     10 3.52  
2025-04-16 18:10:35 Near Iriomotejima     30 3.92  
2025-04-17 07:16:31 Tokachi-South     60 4.32  
2025-04-18 05:10:09 Near Iriomotejima     10 4.13  
2025-04-18 08:57:33 Oita-Central     10 3.73  
2025-04-18 20:19:29 Nagano-North     10 5.15 Lower  
2025-04-18 20:42:12 Nagano-North     10 3.33  
2025-04-18 22:15:44 Off the coast of Fukushima     60 3.52  
2025-04-18 23:39:46 Nagano-North     10 4.24  
2025-04-19 00:07:59 Nagano-North     10 3.83  
2025-04-19 01:02:36 Nagano-North     10 43  
2025-04-19 01:53:51 Nagano-North     10 3.73  
2025-04-19 01:53:54 Nagano-North     20 3.73  
2025-04-19 02:20:58 Nagano-North     10 3.63  
2025-04-19 06:08:52 Off the coast of Tokachi     30 4.31  
2025-04-19 12:24:55 Nagano-North     10 3.33  
2025-04-19 12:57:00 Ishikawa-Noto     10 3.63  
2025-04-20 15:11:03 Chiba-Northeastern     90 4.43  
2025-04-21 13:45:22 Off the south coast of the Boso Peninsula     50 3.91  
2025-04-21 22:11:18 Ibaraki-South     130 4.33  
2025-04-22 01:48:05 Off the coast of Fukushima     60 4.33  
2025-04-22 03:23:47 Off the coast of Tokachi     40 3.92  
2025-04-22 20:37:51 Off the coast of Fukushima     60 3.62  
2025-04-23 07:21:50 Off the east coast of Aomori     40 4.42  
2025-04-23 09:02:29 Near Taiwan     150 5.62  
2025-04-23 11:25:24 Off the east coast of Kanto     10 4.51  
2025-04-23 13:11:41 Near Sado     10 3.92  
2025-04-24 09:07:52 Off the coast of Iwate     70 4.23  
2025-04-25 01:15:49 Off the coast of Miyagi     60 3.82  
2025-04-26 09:05:13 Off the coast of Miyagi     50 3.82  
2025-04-26 12:06:54 Kumamoto-Asmakusa     10 4.24  
2025-04-27 13:18:15 Off the coast of Fukushima     60 3.62  
2025-04-27 14:01:57 Off the coast of Miyagi     60 3.82  
2025-04-27 17:39:26 Off the coast of Iwate     50 3.42  
2025-04-28 15:37:25 Off the coast of Uraga     70 4.32  
2025-04-28 16:54:15 Kumamoto-Kumamoto     10 3.43  
2025-04-30 02:30:30 Off the coast of Miyagi     60 3.62  
2025-04-30 06:15:37 Off the coast of Okinawa Main Island     100 4.12  
2025-04-30 07:15:49 Near the coast of Okinawa     10 3.32  
2025-04-30 10:03:39 Off the coast of Miyagi     40 4.12  
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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