J1 Earthquake Early Warning
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Quake Time Epicenter Latitude Longitude Depth Magnitude Intensity Remarks
07:32 JST 01 Mar 2012 Ibaraki-ken Oki 60 km 5.4 36.5 N 140.7 E5 lower No tsunami alerts
07:32 JST 01 Mar 2012 Ibaraki-ken Oki 60 km 5.4 36.5 N 140.7 E5 lower Intensity correction
11:12 JST 01 Mar 2012 Chiba-ken Toho-oki 30 km 4.9 35.2 N 141.5 E2 No tsunami alerts
12:25 JST 01 Mar 2012 Ibaraki-ken Oki 30 km 4.3 36.8 N 141.3 E2 No tsunami alerts
23:00 JST 01 Mar 2012 Kumamoto-ken Kumamoto-chiho 10 km 2.5 32.7 N 130.7 E1 No tsunami alerts
23:48 JST 01 Mar 2012 Kumamoto-ken Kumamoto-chiho 10 km 3.4 32.7 N 130.7 E2 No tsunami alerts
23:50 JST 01 Mar 2012 Fukushima-ken Oki 50 km 4.2 37.0 N 141.2 EUnknNo tsunami alerts
00:13 JST 02 Mar 2012 Ibaraki-ken Oki 40 km 3.3 36.1 N 141.0 E1 No tsunami alerts
01:49 JST 02 Mar 2012 Miyazaki-ken Nambu-yamazoi 10 km 1.9 31.7 N 131.1 E1 No tsunami alerts
03:27 JST 02 Mar 2012 Akita-ken Nairiku-nambu 10 km 2.0 39.6 N 140.5 E1 No tsunami alerts
09:08 JST 02 Mar 2012 Hyuga-nada 40 km 3.2 32.6 N 132.0 E1 No tsunami alerts
18:09 JST 02 Mar 2012 Ibaraki-ken Hokubu 20 km 3.1 36.7 N 140.6 E1 No tsunami alerts
19:11 JST 02 Mar 2012 Chiba-ken Toho-oki 40 km 5.1 35.2 N 141.3 E2 No tsunami alerts
06:16 JST 03 Mar 2012 Miyagi-ken Oki 50 km 3.7 38.6 N 141.9 E2 No tsunami alerts
06:48 JST 03 Mar 2012 Niigata-ken Chuetsu-chiho very shallow 2.5 37.0 N 138.6 E1 No tsunami alerts
07:19 JST 03 Mar 2012 Urakawa Oki 60 km 3.8 42.0 N 142.6 E1 No tsunami alerts
08:46 JST 03 Mar 2012 Nagano-ken Chubu 10 km 2.5 35.9 N 138.2 E1 No tsunami alerts
09:24 JST 03 Mar 2012 Izu-hanto Toho-oki 10 km 2.6 35.0 N 139.1 E1 No tsunami alerts
09:41 JST 03 Mar 2012 Iwate-ken Oki 50 km 3.2 39.7 N 142.1 E1 No tsunami alerts
15:06 JST 03 Mar 2012 Hidaka-chiho Tobu 60 km 3.9 42.2 N 142.9 E2 No tsunami alerts
16:55 JST 03 Mar 2012 Miyagi-ken Oki 50 km 3.0 38.6 N 141.9 E1 No tsunami alerts
17:21 JST 03 Mar 2012 Miyazaki-ken Hokubu-heiyabu 80 km 3.2 32.3 N 131.3 E1 No tsunami alerts
19:31 JST 03 Mar 2012 Okinawa-honto Kinkai 20 km 3.1 26.3 N 127.2 E1 No tsunami alerts
21:33 JST 03 Mar 2012 Yamanashi-ken Tobu-Fujigoko 20 km 2.9 35.6 N 139.0 E2 No tsunami alerts
22:04 JST 03 Mar 2012 Iwate-ken Engan-hokubu 60 km 3.6 40.1 N 141.7 E2 No tsunami alerts
22:26 JST 03 Mar 2012 Miyagi-ken Oki 50 km 4.0 38.9 N 141.9 E2 No tsunami alerts
23:25 JST 03 Mar 2012 Ibaraki-ken Hokubu 10 km 3.0 36.7 N 140.6 E1 No tsunami alerts
00:05 JST 04 Mar 2012 Ibaraki-ken Hokubu 10 km 2.8 36.7 N 140.6 E1 No tsunami alerts
01:58 JST 04 Mar 2012 Fukushima-ken Oki 30 km 4.0 37.0 N 141.7 E1 No tsunami alerts
02:10 JST 04 Mar 2012 Miyazaki-ken Nambu-yamazoi very shallow 2.2 31.9 N 131.1 E1 No tsunami alerts
02:48 JST 04 Mar 2012 Ibaraki-ken Oki 40 km 4.0 36.3 N 141.0 E1 No tsunami alerts
12:41 JST 04 Mar 2012 Ibaraki-ken Hokubu 20 km 2.9 36.7 N 140.6 E1 No tsunami alerts
14:15 JST 04 Mar 2012 Ibaraki-ken Hokubu 10 km 3.3 36.7 N 140.7 E3 No tsunami alerts
19:25 JST 04 Mar 2012 Miyagi-ken Oki 50 km 3.1 38.9 N 142.0 E1 No tsunami alerts
21:30 JST 04 Mar 2012 Fukushima-ken Hamadori very shallow 2.2 37.1 N 140.8 E1 No tsunami alerts
23:33 JST 04 Mar 2012 Kii-suido 40 km 3.1 33.7 N 135.1 E1 No tsunami alerts
01:14 JST 05 Mar 2012 Saitama-ken Hokubu 20 km 2.2 36.1 N 139.2 E1 No tsunami alerts
01:31 JST 05 Mar 2012 Miyagi-ken Oki 40 km 3.8 38.3 N 142.1 E1 No tsunami alerts
01:32 JST 05 Mar 2012 Miyagi-ken Oki 50 km 3.7 38.9 N 141.9 E1 No tsunami alerts
02:52 JST 05 Mar 2012 Yonagunijima Kinkai 50 km 4.5 24.2 N 122.7 E1 No tsunami alerts
13:39 JST 05 Mar 2012 Fukushima-ken Oki 20 km 4.0 37.0 N 141.2 E1 No tsunami alerts
15:24 JST 05 Mar 2012 Iwate-ken Oki 40 km 5.0 40.2 N 142.5 E3 No tsunami alerts
21:52 JST 05 Mar 2012 Miyagi-ken Oki 40 km 3.7 38.2 N 142.2 E1 No tsunami alerts
23:15 JST 05 Mar 2012 Chiba-ken Hokutobu 40 km 3.1 35.9 N 140.4 E1 No tsunami alerts
04:28 JST 06 Mar 2012 Miyagi-ken Oki 50 km 3.0 38.7 N 141.8 E1 No tsunami alerts
06:55 JST 06 Mar 2012 Tochigi-ken Nambu 10 km 2.3 36.6 N 139.5 E1 No tsunami alerts
09:25 JST 06 Mar 2012 Iwate-ken Oki 40 km 3.6 39.1 N 142.3 E1 No tsunami alerts
09:30 JST 06 Mar 2012 Ibaraki-ken Oki 30 km 3.3 36.5 N 141.1 E1 No tsunami alerts
09:47 JST 06 Mar 2012 Ibaraki-ken Oki 10 km 3.8 36.7 N 141.0 E1 No tsunami alerts
11:15 JST 06 Mar 2012 Miyagi-ken Oki 50 km 2.7 38.6 N 141.7 E1 No tsunami alerts
16:05 JST 06 Mar 2012 Ibaraki-ken Nambu 60 km 3.5 36.3 N 140.1 E2 No tsunami alerts
18:50 JST 06 Mar 2012 Fukushima-ken Oki 40 km 4.4 37.7 N 141.9 E2 No tsunami alerts
18:58 JST 06 Mar 2012 Fukushima-ken Oki 50 km 3.6 37.1 N 141.2 E1 No tsunami alerts
20:17 JST 06 Mar 2012 Ibaraki-ken Oki 10 km 4.8 35.9 N 141.9 E1 No tsunami alerts
20:34 JST 06 Mar 2012 Miyagi-ken Oki 40 km 3.8 38.3 N 142.1 E1 No tsunami alerts
04:26 JST 07 Mar 2012 Aomori-ken Toho-oki 50 km 4.0 40.6 N 142.0 E2 No tsunami alerts
06:58 JST 07 Mar 2012 Ibaraki-ken Oki 10 km 3.6 35.9 N 141.1 E1 No tsunami alerts
10:12 JST 07 Mar 2012 Fukushima-ken Oki 50 km 4.0 37.1 N 141.2 E2 No tsunami alerts
11:58 JST 07 Mar 2012 Chiba-ken Hokutobu 50 km 3.2 35.7 N 140.7 E1 No tsunami alerts
14:34 JST 07 Mar 2012 Iwate-ken Oki 30 km 4.1 39.2 N 142.4 E2 No tsunami alerts
15:18 JST 07 Mar 2012 Okinawa-honto Kinkai 50 km 5.2 25.5 N 127.3 E2 No tsunami alerts
16:49 JST 07 Mar 2012 Okinawa-honto Kinkai 50 km 4.3 25.4 N 127.3 E1 No tsunami alerts
23:56 JST 07 Mar 2012 Niigata-ken Chuetsu-chiho very shallow 1.6 37.0 N 138.7 E1 No tsunami alerts
00:19 JST 08 Mar 2012 Niigata-ken Chuetsu-chiho very shallow 2.7 37.0 N 138.7 E3 No tsunami alerts
03:41 JST 08 Mar 2012 Miyagi-ken Oki 60 km 3.7 38.3 N 142.0 E1 No tsunami alerts
03:51 JST 08 Mar 2012 Ibaraki-ken Nambu 50 km 4.3 36.1 N 139.9 E3 No tsunami alerts
12:23 JST 08 Mar 2012 Miyagi-ken Oki 50 km 4.7 38.5 N 141.8 E3 No tsunami alerts
13:44 JST 08 Mar 2012 Nagano-ken Hokubu very shallow 2.7 37.0 N 138.5 E1 No tsunami alerts
22:16 JST 08 Mar 2012 Nagano-ken Hokubu 10 km 2.4 36.5 N 137.9 E2 No tsunami alerts
00:22 JST 09 Mar 2012 Nagano-ken Hokubu 10 km 1.8 36.5 N 137.9 E1 No tsunami alerts
01:03 JST 09 Mar 2012 Ibaraki-ken Oki 30 km 2.8 36.5 N 141.0 E1 No tsunami alerts
01:19 JST 09 Mar 2012 Kumamoto-ken Kumamoto-chiho 10 km 3.0 33.0 N 130.8 E2 No tsunami alerts
01:41 JST 09 Mar 2012 Miyagi-ken Oki 40 km 4.4 38.7 N 142.5 EUnknNo tsunami alerts
09:37 JST 09 Mar 2012 Fukushima-ken Oki 60 km 3.9 37.3 N 141.4 E2 No tsunami alerts
14:32 JST 09 Mar 2012 Fukushima-ken Oki 10 km 4.6 36.7 N 142.2 E1 No tsunami alerts
15:55 JST 09 Mar 2012 Ibaraki-ken Hokubu 20 km 3.2 36.8 N 140.7 E1 No tsunami alerts
19:48 JST 09 Mar 2012 Ibaraki-ken Hokubu 10 km 3.6 36.7 N 140.7 E2 No tsunami alerts
01:36 JST 10 Mar 2012 Iwate-ken Oki 50 km 3.7 39.7 N 142.1 E1 No tsunami alerts
02:25 JST 10 Mar 2012 Ibaraki-ken Hokubu 10 km 5.5 36.7 N 140.7 EUnknNo tsunami alerts
02:25 JST 10 Mar 2012 Ibaraki-ken Hokubu 10 km 5.5 36.7 N 140.7 E5 lower Intensity correction
03:15 JST 10 Mar 2012 Ibaraki-ken Hokubu 10 km 3.9 36.7 N 140.7 E3 No tsunami alerts
03:36 JST 10 Mar 2012 Ibaraki-ken Hokubu 10 km 3.1 36.7 N 140.7 E1 No tsunami alerts
03:38 JST 10 Mar 2012 Ibaraki-ken Hokubu 10 km 3.6 36.7 N 140.7 E2 No tsunami alerts
05:13 JST 10 Mar 2012 Okayama-ken Hokubu 10 km 2.9 35.1 N 133.4 E1 No tsunami alerts
05:49 JST 10 Mar 2012 Ibaraki-ken Hokubu 10 km 3.2 36.7 N 140.7 E2 No tsunami alerts
07:35 JST 10 Mar 2012 Tokushima-ken Hokubu 10 km 2.2 34.2 N 134.5 E1 No tsunami alerts
07:37 JST 10 Mar 2012 Ibaraki-ken Hokubu 10 km 3.5 36.7 N 140.6 E2 No tsunami alerts
10:33 JST 10 Mar 2012 Miyagi-ken Oki 50 km 4.1 38.3 N 141.9 E2 No tsunami alerts
12:13 JST 10 Mar 2012 Miyagi-ken Oki 60 km 3.2 38.4 N 141.9 E1 No tsunami alerts
12:56 JST 10 Mar 2012 Kumamoto-ken Aso-chiho 10 km 1.6 32.9 N 131.1 E1 No tsunami alerts
14:30 JST 10 Mar 2012 Ibaraki-ken Hokubu 10 km 2.8 36.7 N 140.7 E1 No tsunami alerts
14:31 JST 10 Mar 2012 Ibaraki-ken Hokubu 10 km 3.2 36.7 N 140.7 E1 No tsunami alerts
16:46 JST 10 Mar 2012 Ibaraki-ken Oki 30 km 3.6 36.0 N 141.2 E1 No tsunami alerts
19:08 JST 10 Mar 2012 Kagoshima-ken Osumi-chiho 70 km 3.7 31.6 N 131.1 E2 No tsunami alerts
20:43 JST 10 Mar 2012 Fukushima-ken Aizu 10 km 2.9 37.7 N 139.9 E2 No tsunami alerts
20:55 JST 10 Mar 2012 Fukushima-ken Oki 10 km 4.5 37.4 N 141.7 E1 No tsunami alerts
21:19 JST 10 Mar 2012 Ibaraki-ken Hokubu 10 km 3.5 36.7 N 140.7 E2 No tsunami alerts
00:40 JST 11 Mar 2012 Fukushima-ken Oki 40 km 4.4 37.2 N 141.5 E2 No tsunami alerts
01:00 JST 11 Mar 2012 Ibaraki-ken Oki 50 km 4.0 36.6 N 141.1 E2 No tsunami alerts
02:03 JST 11 Mar 2012 Ibaraki-ken Hokubu 10 km 2.9 36.7 N 140.7 E1 No tsunami alerts
07:41 JST 11 Mar 2012 Iwate-ken Oki 30 km 3.8 39.1 N 142.4 E1 No tsunami alerts
09:00 JST 11 Mar 2012 Chiba-ken Toho-oki 10 km 3.6 35.8 N 141.0 E2 No tsunami alerts
10:54 JST 11 Mar 2012 Ibaraki-ken Oki 40 km 3.4 36.3 N 141.0 E1 No tsunami alerts
11:14 JST 11 Mar 2012 Fukushima-ken Hamadori 20 km 3.5 36.9 N 140.7 E1 No tsunami alerts
13:13 JST 11 Mar 2012 Gifu-ken Mino-chuseibu 10 km 2.9 35.5 N 136.9 E1 No tsunami alerts
16:25 JST 11 Mar 2012 Okinawa-honto Kinkai 10 km 4.3 25.4 N 127.2 E1 No tsunami alerts
17:33 JST 11 Mar 2012 Tokachi-chiho Chubu 60 km 4.5 42.6 N 143.3 E3 No tsunami alerts
18:25 JST 11 Mar 2012 Ibaraki-ken Hokubu 10 km 3.2 36.7 N 140.7 E1 No tsunami alerts
20:08 JST 11 Mar 2012 Miyagi-ken Oki 40 km 3.9 38.9 N 142.1 E1 No tsunami alerts
06:12 JST 12 Mar 2012 Ibaraki-ken Hokubu 10 km 3.2 36.7 N 140.7 E1 No tsunami alerts
07:58 JST 12 Mar 2012 Kumamoto-ken Kumamoto-chiho very shallow 3.9 32.9 N 130.9 E4 No tsunami alerts
08:13 JST 12 Mar 2012 Etorofuto Nanto-oki 10 km 4.8 44.1 N 147.9 E1 No tsunami alerts
08:18 JST 12 Mar 2012 Kumamoto-ken Kumamoto-chiho 10 km 1.7 32.9 N 130.9 E1 No tsunami alerts
10:14 JST 12 Mar 2012 Fukushima-ken Hamadori 20 km 3.4 36.9 N 140.7 E1 No tsunami alerts
11:25 JST 12 Mar 2012 Chiba-ken Toho-oki 10 km 3.3 35.8 N 141.0 E1 No tsunami alerts
19:41 JST 12 Mar 2012 Iwate-ken Oki 30 km 3.3 39.1 N 142.4 E1 No tsunami alerts
20:07 JST 12 Mar 2012 Chiba-ken Hokuseibu 10 km 2.9 35.6 N 140.1 E1 No tsunami alerts
21:33 JST 12 Mar 2012 Etorofuto Fukin 70 km 5.7 45.3 N 149.0 E2 No tsunami alerts
22:38 JST 12 Mar 2012 Ibaraki-ken Hokubu 10 km 3.7 36.7 N 140.6 E2 No tsunami alerts
22:45 JST 12 Mar 2012 Ibaraki-ken Hokubu 10 km 2.9 36.7 N 140.6 E1 No tsunami alerts
07:46 JST 13 Mar 2012 Fukushima-ken Oki 30 km 3.9 37.4 N 141.3 E2 No tsunami alerts
08:04 JST 13 Mar 2012 Amami-oshima Kinkai 40 km 3.0 28.2 N 130.0 E1 No tsunami alerts
14:51 JST 13 Mar 2012 Niigata-ken Chuetsu-chiho very shallow 2.0 37.0 N 138.7 E1 No tsunami alerts
15:30 JST 13 Mar 2012 Fukushima-ken Oki 30 km 3.2 37.4 N 141.3 E1 No tsunami alerts
19:55 JST 13 Mar 2012 Kumamoto-ken Aso-chiho 10 km 2.4 32.9 N 131.0 E1 No tsunami alerts
00:39 JST 14 Mar 2012 Miyagi-ken Oki 60 km 4.0 38.2 N 141.8 E1 No tsunami alerts
01:50 JST 14 Mar 2012 Nagano-ken Hokubu 10 km 2.5 37.0 N 138.5 E1 No tsunami alerts
04:11 JST 14 Mar 2012 Ibaraki-ken Oki 20 km 3.5 36.7 N 141.2 E1 No tsunami alerts
05:13 JST 14 Mar 2012 Fukushima-ken Nakadori 10 km 2.6 37.1 N 140.6 E1 No tsunami alerts
07:04 JST 14 Mar 2012 Fukushima-ken Nakadori 90 km 3.2 37.1 N 140.6 E1 No tsunami alerts
16:23 JST 14 Mar 2012 Iriomotejima Fukin 20 km 3.7 24.4 N 123.4 E1 No tsunami alerts
18:09 JST 14 Mar 2012 Sanriku Oki 10 km 6.8 40.7 N 145.2 EUnknTsunami alert issued
18:09 JST 14 Mar 2012 Sanriku Oki 10 km 6.8 40.7 N 145.2 E4 Tsunami alert issued
19:29 JST 14 Mar 2012 Fukushima-ken Oki 10 km 4.6 37.7 N 142.4 E1 Tsunami alert issued
19:49 JST 14 Mar 2012 Sanriku Oki 10 km 5.9 40.7 N 145.0 EUnknNo tsunami alerts
19:58 JST 14 Mar 2012 Sanriku Oki 10 km 5.3 40.7 N 144.9 E2 No tsunami alerts
20:40 JST 14 Mar 2012 Sanriku Oki 10 km 5.3 40.9 N 145.1 E1 No tsunami alerts
21:05 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 6.1 35.8 N 141.1 E5 upper  
21:05 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 6.1 35.8 N 141.1 E5 upper Intensity correction
21:16 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 3.1 35.8 N 141.0 E1  
21:25 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 3.7 35.8 N 140.9 E1  
21:27 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 3.7 35.8 N 140.9 E1 No tsunami alerts
21:29 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 3.6 35.8 N 141.0 E1 No tsunami alerts
21:40 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 3.1 35.8 N 141.0 E1 No tsunami alerts
21:58 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 3.2 35.8 N 140.9 E1  
21:59 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 3.7 35.8 N 140.9 E1 No tsunami alerts
22:25 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 3.4 35.8 N 140.9 E1 No tsunami alerts
22:29 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 4.5 35.8 N 141.0 E3 No tsunami alerts
22:52 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 3.4 35.8 N 140.9 E1 No tsunami alerts
23:32 JST 14 Mar 2012 Chiba-ken Toho-oki 10 km 3.2 35.8 N 140.9 E1 No tsunami alerts
00:23 JST 15 Mar 2012 Chiba-ken Toho-oki 20 km 3.6 35.7 N 141.0 E1 No tsunami alerts
01:31 JST 15 Mar 2012 Chiba-ken Toho-oki 10 km 2.9 35.8 N 140.9 E1 No tsunami alerts
01:39 JST 15 Mar 2012 Chiba-ken Toho-oki 10 km 3.5 35.8 N 140.9 E1 No tsunami alerts
01:52 JST 15 Mar 2012 Chiba-ken Toho-oki 20 km 4.0 35.8 N 141.0 E2 No tsunami alerts
01:57 JST 15 Mar 2012 Ibaraki-ken Hokubu 10 km 3.7 36.7 N 140.6 E3 No tsunami alerts
02:10 JST 15 Mar 2012 Chiba-ken Toho-oki 10 km 3.5 35.8 N 140.9 E1 No tsunami alerts
04:50 JST 15 Mar 2012 Gifu-ken Hida-chiho very shallow 2.5 36.0 N 137.3 E1 No tsunami alerts
06:39 JST 15 Mar 2012 Kanto Toho-oki 10 km 5.0 35.7 N 142.1 E2 No tsunami alerts
07:11 JST 15 Mar 2012 Chiba-ken Toho-oki 10 km 3.4 35.8 N 140.9 E1 No tsunami alerts
08:45 JST 15 Mar 2012 Chiba-ken Toho-oki 10 km 3.0 35.8 N 141.0 E1 No tsunami alerts
09:09 JST 15 Mar 2012 Sanriku Oki 10 km 5.2 39.1 N 144.0 E1 No tsunami alerts
09:25 JST 15 Mar 2012 Chiba-ken Toho-oki 10 km 3.2 35.8 N 140.9 E1 No tsunami alerts
10:56 JST 15 Mar 2012 Chiba-ken Toho-oki 10 km 3.3 35.8 N 141.0 E1 No tsunami alerts
11:57 JST 15 Mar 2012 Chiba-ken Toho-oki 10 km 3.2 35.8 N 140.9 E1 No tsunami alerts
12:50 JST 15 Mar 2012 Chiba-ken Toho-oki 10 km 3.1 35.7 N 140.9 E1 No tsunami alerts
14:02 JST 15 Mar 2012 Miyagi-ken Oki 40 km 3.5 38.6 N 142.1 E1 No tsunami alerts
14:45 JST 15 Mar 2012 Hokkaido Nansei-oki 10 km 3.2 42.0 N 139.3 E1 No tsunami alerts
15:13 JST 15 Mar 2012 Ibaraki-ken Hokubu 20 km 3.3 36.9 N 140.6 E1 No tsunami alerts
19:42 JST 15 Mar 2012 Chiba-ken Nanto-oki 50 km 3.8 34.6 N 140.7 E1 No tsunami alerts
21:59 JST 15 Mar 2012 Chiba-ken Toho-oki 10 km 2.7 35.8 N 140.9 E1 No tsunami alerts
22:20 JST 15 Mar 2012 Sanriku Oki 10 km 4.4 39.9 N 143.2 E1 No tsunami alerts
23:21 JST 15 Mar 2012 Miyagi-ken Oki 50 km 4.2 38.1 N 141.8 E2 No tsunami alerts
00:07 JST 16 Mar 2012 Chiba-ken Toho-oki 10 km 3.2 35.8 N 140.9 E1 No tsunami alerts
00:37 JST 16 Mar 2012 Chiba-ken Toho-oki 10 km 3.1 35.7 N 141.0 E1 No tsunami alerts
03:31 JST 16 Mar 2012 Chiba-ken Toho-oki 10 km 3.0 35.8 N 141.0 E1 No tsunami alerts
04:20 JST 16 Mar 2012 Saitama-ken Nambu 100 km 5.2 35.9 N 139.5 E3 No tsunami alerts
04:20 JST 16 Mar 2012 Saitama-ken Nambu 100 km 5.2 35.9 N 139.5 E3 Intensity correction
04:19 JST 16 Mar 2012 Nagano-ken Chubu 10 km 2.7 36.3 N 138.0 E1 No tsunami alerts
05:01 JST 16 Mar 2012 Ibaraki-ken Oki 50 km 3.2 36.6 N 140.9 E1 No tsunami alerts
05:49 JST 16 Mar 2012 Chiba-ken Toho-oki 10 km 3.4 35.8 N 141.0 E1 No tsunami alerts
06:50 JST 16 Mar 2012 Wakayama-ken Hokubu 10 km 2.7 34.2 N 135.2 E2 No tsunami alerts
09:14 JST 16 Mar 2012 Ibaraki-ken Oki 10 km 3.6 35.9 N 140.9 E1 No tsunami alerts
10:27 JST 16 Mar 2012 Chiba-ken Toho-oki 10 km 3.6 35.8 N 141.0 E2 No tsunami alerts
10:38 JST 16 Mar 2012 Chiba-ken Toho-oki very shallow 3.7 35.8 N 141.0 E2 No tsunami alerts
14:04 JST 16 Mar 2012 Fukushima-ken Oki 30 km 3.2 37.3 N 141.3 E1 No tsunami alerts
16:10 JST 16 Mar 2012 Ibaraki-ken Oki 50 km 3.1 36.6 N 141.1 E1 No tsunami alerts
17:39 JST 16 Mar 2012 Chiba-ken Toho-oki 10 km 3.1 35.7 N 140.8 E1 No tsunami alerts
17:53 JST 16 Mar 2012 Chiba-ken Toho-oki 10 km 3.6 35.8 N 140.9 E1 No tsunami alerts
17:55 JST 16 Mar 2012 Nara-ken 60 km 3.5 34.2 N 135.7 E1 No tsunami alerts
03:30 JST 17 Mar 2012 Ibaraki-ken Hokubu 10 km 2.9 36.7 N 140.6 E1 No tsunami alerts
03:31 JST 17 Mar 2012 Tokyo-to Tama-seibu 60 km 2.7 35.8 N 139.0 E1 No tsunami alerts
08:18 JST 17 Mar 2012 Chiba-ken Toho-oki 10 km 4.4 35.8 N 140.9 E2 No tsunami alerts
08:39 JST 17 Mar 2012 Chiba-ken Toho-oki 10 km 3.8 35.7 N 141.0 E2 No tsunami alerts
08:40 JST 17 Mar 2012 Aichi-ken Seibu 50 km 2.9 35.2 N 137.3 E1 No tsunami alerts
11:55 JST 17 Mar 2012 Saitama-ken Nambu 100 km 4.0 35.9 N 139.6 E2 No tsunami alerts
14:05 JST 17 Mar 2012 Chiba-ken Toho-oki very shallow 3.4 35.8 N 141.0 E1 No tsunami alerts
14:12 JST 17 Mar 2012 Chiba-ken Toho-oki very shallow 4.3 35.8 N 141.0 E2 No tsunami alerts
14:25 JST 17 Mar 2012 Ibaraki-ken Hokubu 10 km 3.0 36.8 N 140.6 E1 No tsunami alerts
18:11 JST 17 Mar 2012 Chiba-ken Toho-oki very shallow 3.7 35.8 N 141.0 E1 No tsunami alerts
20:02 JST 17 Mar 2012 Chiba-ken Toho-oki 10 km 3.1 35.8 N 141.0 E1 No tsunami alerts
20:24 JST 17 Mar 2012 Ibaraki-ken Hokubu 20 km 4.1 36.8 N 140.6 E3 No tsunami alerts
22:47 JST 17 Mar 2012 Miyagi-ken Oki 70 km 4.5 38.1 N 141.5 E3 No tsunami alerts
01:40 JST 18 Mar 2012 Chiba-ken Toho-oki 10 km 3.2 35.8 N 141.0 E1 No tsunami alerts
05:10 JST 18 Mar 2012 Niigata-ken Chuetsu-chiho 20 km 2.7 37.0 N 138.6 E1 No tsunami alerts
06:42 JST 18 Mar 2012 Chiba-ken Toho-oki 10 km 4.1 35.8 N 141.0 E3 No tsunami alerts
07:28 JST 18 Mar 2012 Chiba-ken Toho-oki 10 km 3.2 35.8 N 141.0 E2 No tsunami alerts
08:11 JST 18 Mar 2012 Hachijojima Toho-oki 70 km 4.6 32.8 N 140.6 E1 No tsunami alerts
08:50 JST 18 Mar 2012 Ibaraki-ken Hokubu 10 km 3.6 36.8 N 140.6 E2 No tsunami alerts
09:36 JST 18 Mar 2012 Iwate-ken Oki 40 km 5.0 39.1 N 142.3 E4 No tsunami alerts
14:56 JST 18 Mar 2012 Iwate-ken Oki 40 km 3.8 39.3 N 142.3 E2 No tsunami alerts
22:16 JST 18 Mar 2012 Ibaraki-ken Oki very shallow 4.2 35.9 N 141.0 E2 No tsunami alerts
00:45 JST 19 Mar 2012 Fukushima-ken Hamadori 10 km 2.6 37.0 N 140.6 E1 No tsunami alerts
02:37 JST 19 Mar 2012 Iwate-ken Oki 90 km 4.1 39.3 N 142.2 E1 No tsunami alerts
05:10 JST 19 Mar 2012 Iyo-nada 40 km 3.6 33.6 N 132.4 E1 No tsunami alerts
06:03 JST 19 Mar 2012 Chiba-ken Toho-oki very shallow 3.2 35.8 N 140.9 E2 No tsunami alerts
11:30 JST 19 Mar 2012 Saitama-ken Nambu 100 km 3.8 35.9 N 139.6 E1 No tsunami alerts
11:56 JST 19 Mar 2012 Aomori-ken Toho-oki 60 km 4.7 41.5 N 142.1 E3 No tsunami alerts
16:54 JST 19 Mar 2012 Chiba-ken Toho-oki 10 km 3.2 35.8 N 140.9 E1 No tsunami alerts
19:23 JST 19 Mar 2012 Nemuro-hanto Nanto-oki 100 km 4.5 43.4 N 146.1 E2 No tsunami alerts
04:23 JST 20 Mar 2012 Iwate-ken Oki 40 km 3.9 39.1 N 142.5 E1 No tsunami alerts
05:07 JST 20 Mar 2012 Chiba-ken Toho-oki 10 km 3.2 35.8 N 140.9 E1 No tsunami alerts
07:06 JST 20 Mar 2012 Ibaraki-ken Oki 30 km 4.0 36.8 N 141.2 E2 No tsunami alerts
08:35 JST 20 Mar 2012 Sanriku Oki 10 km 5.1 40.8 N 144.9 E1 No tsunami alerts
16:41 JST 20 Mar 2012 Ibaraki-ken Hokubu 10 km 3.3 36.7 N 140.6 E2 No tsunami alerts
18:14 JST 20 Mar 2012 Fukushima-ken Hamadori 10 km 3.0 37.2 N 140.7 E1 No tsunami alerts
21:32 JST 20 Mar 2012 Ibaraki-ken Oki 10 km 2.9 36.6 N 140.7 E1 No tsunami alerts
01:53 JST 21 Mar 2012 Chiba-ken Toho-oki 30 km 4.0 35.8 N 141.1 E1 No tsunami alerts
01:58 JST 21 Mar 2012 Chiba-ken Toho-oki 30 km 3.8 35.8 N 141.1 E1 No tsunami alerts
04:16 JST 21 Mar 2012 Miyazaki-ken Nambu-yamazoi 10 km 2.6 32.1 N 131.0 E1 No tsunami alerts
05:31 JST 21 Mar 2012 Wakayama-ken Hokubu very shallow 2.5 34.2 N 135.3 E1 No tsunami alerts
05:43 JST 21 Mar 2012 Chiba-ken Toho-oki 10 km 3.7 35.8 N 140.9 E2 No tsunami alerts
07:22 JST 21 Mar 2012 Chiba-ken Toho-oki 20 km 3.0 35.8 N 141.0 E1 No tsunami alerts
15:22 JST 21 Mar 2012 Ibaraki-ken Oki 40 km 3.5 36.7 N 141.1 E1 No tsunami alerts
17:33 JST 21 Mar 2012 Fukushima-ken Oki 10 km 4.8 36.7 N 142.3 E1 No tsunami alerts
18:06 JST 21 Mar 2012 Ibaraki-ken Hokubu 10 km 2.9 36.7 N 140.7 E1 No tsunami alerts
19:03 JST 21 Mar 2012 Nemuro-chiho Hokubu 10 km 3.1 43.8 N 144.9 E1 No tsunami alerts
21:01 JST 21 Mar 2012 Fukushima-ken Oki 10 km 5.0 36.7 N 142.4 E1 No tsunami alerts
23:09 JST 21 Mar 2012 Chiba-ken Toho-oki 30 km 3.6 35.8 N 141.0 E1 No tsunami alerts
00:12 JST 22 Mar 2012 Ibaraki-ken Nambu 60 km 3.2 36.3 N 140.1 E2 No tsunami alerts
01:53 JST 22 Mar 2012 Miyagi-ken Oki 40 km 4.3 37.8 N 142.6 E1 No tsunami alerts
03:05 JST 22 Mar 2012 Fukushima-ken Oki 30 km 4.6 37.7 N 142.1 E2 No tsunami alerts
03:25 JST 22 Mar 2012 Miyagi-ken Oki 40 km 4.1 38.6 N 141.9 E2 No tsunami alerts
06:44 JST 22 Mar 2012 Miyagi-ken Oki 10 km 4.5 37.8 N 142.6 E1 No tsunami alerts
09:25 JST 22 Mar 2012 Fukushima-ken Nakadori 10 km 2.9 37.1 N 140.6 E1 No tsunami alerts
08:59 JST 23 Mar 2012 Saitama-ken Nambu 100 km 3.4 35.9 N 139.6 E1 No tsunami alerts
11:30 JST 23 Mar 2012 Ibaraki-ken Oki 40 km 3.4 36.3 N 141.1 E1 No tsunami alerts
13:46 JST 23 Mar 2012 Hokkaido Nansei-oki 10 km 4.0 42.2 N 139.2 E2 No tsunami alerts
17:32 JST 23 Mar 2012 Aichi-ken Seibu 40 km 3.2 35.1 N 137.0 E1 No tsunami alerts
20:31 JST 23 Mar 2012 Fukushima-ken Oki 50 km 3.5 37.0 N 141.4 E1 No tsunami alerts
21:44 JST 23 Mar 2012 Kyoto-fu Hokubu 10 km 3.6 35.2 N 135.2 E2 No tsunami alerts
22:55 JST 23 Mar 2012 Chiba-ken Toho-oki very shallow 3.9 35.8 N 141.0 E2 No tsunami alerts
23:53 JST 23 Mar 2012 Fukushima-ken Oki 30 km 4.1 37.4 N 141.4 E3 No tsunami alerts
00:53 JST 24 Mar 2012 Ibaraki-ken Hokubu 10 km 3.5 36.7 N 140.7 E2 No tsunami alerts
01:31 JST 24 Mar 2012 Harima-nada 10 km 2.5 34.4 N 134.7 E1 No tsunami alerts
02:49 JST 24 Mar 2012 Miyagi-ken Oki 60 km 3.4 38.4 N 142.0 E1 No tsunami alerts
06:14 JST 24 Mar 2012 Harima-nada 10 km 3.2 34.4 N 134.7 E2 No tsunami alerts
14:14 JST 24 Mar 2012 Chiba-ken Toho-oki 10 km 3.9 35.7 N 141.0 E2 No tsunami alerts
14:56 JST 24 Mar 2012 Chiba-ken Toho-oki 10 km 3.5 35.8 N 140.9 E1 No tsunami alerts
16:20 JST 24 Mar 2012 Ibaraki-ken Oki 40 km 3.5 36.4 N 141.0 E1 No tsunami alerts
19:30 JST 24 Mar 2012 Ibaraki-ken Oki 50 km 2.7 36.6 N 140.9 E1 No tsunami alerts
19:48 JST 24 Mar 2012 Ibaraki-ken Oki 50 km 3.3 36.6 N 140.9 E1 No tsunami alerts
01:32 JST 25 Mar 2012 Ibaraki-ken Oki 30 km 3.7 35.9 N 140.8 E1 No tsunami alerts
01:40 JST 25 Mar 2012 Ibaraki-ken Hokubu 10 km 2.4 36.7 N 140.6 E1 No tsunami alerts
03:24 JST 25 Mar 2012 Fukushima-ken Oki 20 km 3.8 37.5 N 141.5 E2 No tsunami alerts
05:03 JST 25 Mar 2012 Ibaraki-ken Hokubu 20 km 3.1 36.8 N 140.7 E1 No tsunami alerts
06:55 JST 25 Mar 2012 Kushiro Oki 30 km 4.6 42.6 N 145.0 E2 No tsunami alerts
07:16 JST 25 Mar 2012 Ibaraki-ken Hokubu 20 km 3.1 36.8 N 140.6 E2 No tsunami alerts
08:01 JST 25 Mar 2012 Miyagi-ken Oki 40 km 3.6 38.0 N 142.0 E1 No tsunami alerts
09:16 JST 25 Mar 2012 Miyagi-ken Oki 50 km 3.5 38.9 N 142.0 E1 No tsunami alerts
11:40 JST 25 Mar 2012 Akita-ken Nairiku-nambu 10 km 2.7 39.4 N 140.6 E1 No tsunami alerts
13:52 JST 25 Mar 2012 Iyo-nada 40 km 3.9 33.5 N 132.3 E2 No tsunami alerts
16:41 JST 25 Mar 2012 Fukushima-ken Hamadori 10 km 3.2 37.2 N 141.0 E1 No tsunami alerts
21:23 JST 25 Mar 2012 Miyagi-ken Oki 50 km 4.4 38.3 N 141.9 E2 No tsunami alerts
21:25 JST 25 Mar 2012 Tochigi-ken Hokubu very shallow 2.3 36.6 N 139.4 E2 No tsunami alerts
22:22 JST 25 Mar 2012 Fukushima-ken Oki 50 km 5.2 37.7 N 141.8 EUnknNo tsunami alerts
03:28 JST 26 Mar 2012 Ibaraki-ken Oki 10 km 2.9 36.6 N 140.7 E1 No tsunami alerts
03:46 JST 26 Mar 2012 Fukushima-ken Oki 50 km 3.9 37.8 N 141.8 E2 No tsunami alerts
04:24 JST 26 Mar 2012 Chiba-ken Toho-oki 10 km 3.1 35.8 N 140.9 E1 No tsunami alerts
04:28 JST 26 Mar 2012 Ibaraki-ken Oki 10 km 2.5 36.6 N 140.7 E1 No tsunami alerts
07:44 JST 26 Mar 2012 Iwate-ken Oki 50 km 3.9 39.9 N 142.2 E1 No tsunami alerts
08:33 JST 26 Mar 2012 Chiba-ken Toho-oki 10 km 3.3 35.8 N 141.0 E1 No tsunami alerts
11:27 JST 26 Mar 2012 Ibaraki-ken Hokubu 10 km 3.3 36.7 N 140.6 E2 No tsunami alerts
11:33 JST 26 Mar 2012 Iwate-ken Oki 30 km 4.6 40.2 N 142.5 E3 No tsunami alerts
18:52 JST 26 Mar 2012 Iwate-ken Oki 50 km 3.7 39.7 N 142.3 E1 No tsunami alerts
04:05 JST 27 Mar 2012 Ibaraki-ken Hokubu 10 km 2.7 36.7 N 140.6 E1 No tsunami alerts
07:39 JST 27 Mar 2012 Fukushima-ken Hamadori 10 km 2.4 37.3 N 141.0 E1 No tsunami alerts
12:06 JST 27 Mar 2012 Ibaraki-ken Oki very shallow 3.3 35.9 N 141.0 E1 No tsunami alerts
13:22 JST 27 Mar 2012 Chiba-ken Toho-oki 10 km 3.4 35.8 N 141.0 E2 No tsunami alerts
14:58 JST 27 Mar 2012 Hyuga-nada 30 km 3.9 32.1 N 131.7 E2 No tsunami alerts
16:09 JST 27 Mar 2012 Miyagi-ken Oki 60 km 2.9 38.5 N 141.7 E1 No tsunami alerts
16:58 JST 27 Mar 2012 Miyagi-ken Oki 50 km 3.3 38.5 N 141.7 E1 No tsunami alerts
19:22 JST 27 Mar 2012 Chiba-ken Toho-oki 10 km 4.6 35.7 N 141.0 E3 No tsunami alerts
20:00 JST 27 Mar 2012 Iwate-ken Oki 10 km 6.4 39.8 N 142.5 E5 lower  
20:00 JST 27 Mar 2012 Iwate-ken Oki 10 km 6.4 39.8 N 142.5 E5 lower Intensity correction
20:02 JST 27 Mar 2012 Iwate-ken Oki 10 km 5.1 39.8 N 142.3 E4 No tsunami alerts
20:11 JST 27 Mar 2012 Iwate-ken Oki 20 km 3.8 39.7 N 142.3 E1 No tsunami alerts
22:21 JST 27 Mar 2012 Sanriku Oki 10 km 4.8 39.7 N 143.8 E1 No tsunami alerts
23:44 JST 27 Mar 2012 Iwate-ken Oki 20 km 4.0 39.8 N 142.3 E1 No tsunami alerts
02:46 JST 28 Mar 2012 Iwate-ken Oki 20 km 3.4 39.7 N 142.3 E1 No tsunami alerts
06:53 JST 28 Mar 2012 Ibaraki-ken Hokubu 20 km 3.2 36.8 N 140.6 E2 No tsunami alerts
07:15 JST 28 Mar 2012 Iwate-ken Oki 20 km 3.2 39.7 N 142.2 E1 No tsunami alerts
07:37 JST 28 Mar 2012 Ibaraki-ken Oki 20 km 3.6 36.0 N 141.1 E1 No tsunami alerts
09:34 JST 28 Mar 2012 Fukushima-ken Oki 50 km 3.7 36.9 N 141.1 E1 No tsunami alerts
10:54 JST 28 Mar 2012 Iwate-ken Oki 20 km 4.1 39.7 N 142.3 E2 No tsunami alerts
11:35 JST 28 Mar 2012 Tokyo-wan 30 km 2.3 35.6 N 140.0 E1 No tsunami alerts
11:37 JST 28 Mar 2012 Saitama-ken Nambu 100 km 3.4 35.9 N 139.5 E1 No tsunami alerts
13:41 JST 28 Mar 2012 Chiba-ken Toho-oki 10 km 3.4 35.8 N 141.1 E1 No tsunami alerts
21:07 JST 28 Mar 2012 Chiba-ken Toho-oki very shallow 3.4 35.8 N 141.0 E1 No tsunami alerts
02:28 JST 29 Mar 2012 Chiba-ken Nanto-oki 70 km 3.7 34.6 N 140.2 E1 No tsunami alerts
04:01 JST 29 Mar 2012 Miyagi-ken Oki 40 km 4.4 38.0 N 141.9 E2 No tsunami alerts
11:57 JST 29 Mar 2012 Akita-ken Nairiku-nambu 10 km 1.7 39.6 N 140.4 E1 No tsunami alerts
14:54 JST 29 Mar 2012 20 km 3.5 34.3 N 131.7 E1 No tsunami alerts
15:14 JST 29 Mar 2012 Ibaraki-ken Hokubu 10 km 3.2 36.7 N 140.7 E1 No tsunami alerts
15:33 JST 29 Mar 2012 Nagano-ken Nambu 10 km 2.5 35.9 N 137.6 E1 No tsunami alerts
16:12 JST 29 Mar 2012 Nagano-ken Nambu 10 km 2.1 35.9 N 137.6 E1 No tsunami alerts
00:48 JST 30 Mar 2012 Yamagata-ken Shonai-chiho 10 km 2.7 38.8 N 139.9 E1 No tsunami alerts
02:24 JST 30 Mar 2012 Iwate-ken Oki 40 km 4.0 39.1 N 142.4 E2 No tsunami alerts
03:10 JST 30 Mar 2012 Miyagi-ken Oki 60 km 3.6 38.4 N 141.8 E1 No tsunami alerts
05:38 JST 30 Mar 2012 Miyagi-ken Oki 50 km 4.7 38.3 N 142.0 E3 No tsunami alerts
08:32 JST 30 Mar 2012 Miyagi-ken Oki 40 km 3.4 38.9 N 142.4 E1 No tsunami alerts
09:52 JST 30 Mar 2012 Iburi-chiho Chutobu 140 km 3.9 42.8 N 141.9 E1 No tsunami alerts
11:17 JST 30 Mar 2012 Shimane-ken Tobu 10 km 2.7 35.1 N 132.7 E1 No tsunami alerts
12:37 JST 30 Mar 2012 Miyagi-ken Oki 50 km 4.0 38.9 N 142.1 E2 No tsunami alerts
13:38 JST 30 Mar 2012 Fukushima-ken Oki 50 km 5.0 37.5 N 141.5 E3 No tsunami alerts
16:03 JST 30 Mar 2012 Sorachi-chiho Hokubu 20 km 2.7 43.9 N 142.1 E1 No tsunami alerts
17:24 JST 30 Mar 2012 Iwate-ken Oki 50 km 3.7 39.9 N 142.2 E1 No tsunami alerts
18:37 JST 30 Mar 2012 Fukushima-ken Oki 50 km 3.6 37.5 N 141.5 E1 No tsunami alerts
18:41 JST 30 Mar 2012 Iwate-ken Oki 20 km 4.5 39.8 N 142.3 E3 No tsunami alerts
19:55 JST 30 Mar 2012 Sanriku Oki 10 km 4.8 40.8 N 145.0 E1 No tsunami alerts
22:07 JST 30 Mar 2012 Miyagi-ken Oki 20 km 4.2 38.9 N 142.6 E1 No tsunami alerts
23:11 JST 30 Mar 2012 Miyagi-ken Oki 50 km 2.9 38.7 N 141.8 E1 No tsunami alerts
04:28 JST 31 Mar 2012 Urakawa Oki 70 km 3.6 41.6 N 142.1 E1 No tsunami alerts
11:50 JST 31 Mar 2012 Iwate-ken Oki 20 km 3.7 39.8 N 142.3 E1 No tsunami alerts
18:04 JST 31 Mar 2012 Ibaraki-ken Oki 40 km 3.3 36.6 N 141.1 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