J1 Earthquake Early Warning
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Last EEW OnAir
2025-04-20 15:11:03 JST
OFFICIAL DATA FROM JMA
EPICENTER
Chiba-Northwestern
SHINDO PEAK INTENSITY
2
MAGNITUDE
4.2
No tsunami risk.
Recent Earthquake Early Warning (EEW) activity
Quake Time Epicenter Depth Mag Shindo
2025-04-20 15:11:03 Chiba-Northeastern 90 4.43
2025-04-19 12:57:00 Ishikawa-Noto 10 3.63
2025-04-19 12:24:55 Nagano-North 10 3.33
2025-04-19 06:08:52 Off the coast of Tokachi 30 4.31
2025-04-19 02:20:58 Nagano-North 10 3.63
2025-04-19 01:53:54 Nagano-North 20 3.73
2025-04-19 01:53:51 Nagano-North 10 3.73
2025-04-19 01:02:36 Nagano-North 10 43
2025-04-19 00:07:59 Nagano-North 10 3.83
2025-04-18 23:39:46 Nagano-North 10 4.24
2025-04-18 22:15:44 Off the coast of Fukushima 60 3.52
2025-04-18 20:42:12 Nagano-North 10 3.33
2025-04-18 20:19:29 Nagano-North 10 5.15-
Recent earthquakes from the JMA
Quake Time Epicenter Depth Mag Shindo
22:17:00 JST 20 Apr 2025 Tokachi-South 50 3.21
18:57:00 JST 20 Apr 2025 Nagano-North 10 2.51
17:42:00 JST 20 Apr 2025 Nagano-North 0 2.01
17:25:00 JST 20 Apr 2025 Off the coast of Miyagi 70 3.41
15:11:00 JST 20 Apr 2025 Chiba-Northwestern 80 4.22
14:50:00 JST 20 Apr 2025 Nagano-North 10 2.61
13:42:00 JST 20 Apr 2025 Nagano-North 10 1.71
13:39:00 JST 20 Apr 2025 Nagano-North 10 2.82
01:13:00 JST 20 Apr 2025 Near the coast of Tokara Islands 10 1.91
00:28:00 JST 20 Apr 2025 Near the coast of Tokara Islands 10 2.41
00:06:00 JST 20 Apr 2025 Near the coast of Tokara Islands 0 2.82
20:12:00 JST 19 Apr 2025 Nagano-North 10 2.31
13:04:00 JST 19 Apr 2025 Nagano-North 0 2.31
12:56:00 JST 19 Apr 2025 Ishakawa Noto 10 3.72
12:24:00 JST 19 Apr 2025 Nagano-North 10 2.92
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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