Since yesterday (JST = UTC + 9):
Issued at Occurred at Region Name Magnitude
08:26 JST 12 Apr 2011 08:24 JST 12 Apr 2011 Nagano-ken Hokubu M3.9
***08:12 JST 12 Apr 2011 08:08 JST 12 Apr 2011 Chiba-ken Toho-oki M6.3***
08:05 JST 12 Apr 2011 08:02 JST 12 Apr 2011 Fukushima-ken Oki M4.0
07:29 JST 12 Apr 2011 07:26 JST 12 Apr 2011 Nagano-ken Hokubu M5.5
07:06 JST 12 Apr 2011 07:03 JST 12 Apr 2011 Fukushima-ken Hamadori M4.5
06:07 JST 12 Apr 2011 06:03 JST 12 Apr 2011 Miyagi-ken Oki M4.3
05:29 JST 12 Apr 2011 05:27 JST 12 Apr 2011 Fukushima-ken Hamadori M4.0
05:07 JST 12 Apr 2011 05:03 JST 12 Apr 2011 Fukushima-ken Hamadori M4.5
04:46 JST 12 Apr 2011 04:43 JST 12 Apr 2011 Fukushima-ken Hamadori M4.2
03:18 JST 12 Apr 2011 03:15 JST 12 Apr 2011 Fukushima-ken Hamadori M4.2
02:20 JST 12 Apr 2011 02:18 JST 12 Apr 2011 Fukushima-ken Hamadori M4.2
01:52 JST 12 Apr 2011 01:49 JST 12 Apr 2011 Fukushima-ken Hamadori M4.3
01:26 JST 12 Apr 2011 01:23 JST 12 Apr 2011 Niigata-ken Chuetsu-chiho M2.6
01:22 JST 12 Apr 2011 01:19 JST 12 Apr 2011 Fukushima-ken Hamadori M4.1
01:01 JST 12 Apr 2011 00:57 JST 12 Apr 2011 Fukushima-ken Hamadori M5.0
00:46 JST 12 Apr 2011 00:43 JST 12 Apr 2011 Fukushima-ken Hamadori M4.5
00:24 JST 12 Apr 2011 00:21 JST 12 Apr 2011 Ibaraki-ken Hokubu M4.8
23:29 JST 11 Apr 2011 23:26 JST 11 Apr 2011 Fukushima-ken Hamadori M3.8
22:49 JST 11 Apr 2011 22:46 JST 11 Apr 2011 Nagano-ken Hokubu M3.8
22:28 JST 11 Apr 2011 22:24 JST 11 Apr 2011 Fukushima-ken Hamadori M4.0
22:08 JST 11 Apr 2011 22:05 JST 11 Apr 2011 Fukushima-ken Hamadori M4.7
20:45 JST 11 Apr 2011 20:42 JST 11 Apr 2011 Ibaraki-ken Hokubu M5.9
20:30 JST 11 Apr 2011 20:27 JST 11 Apr 2011 Fukushima-ken Hamadori M4.6
20:26 JST 11 Apr 2011 20:23 JST 11 Apr 2011 Ibaraki-ken Hokubu M3.7
20:03 JST 11 Apr 2011 19:59 JST 11 Apr 2011 Fukushima-ken Oki M4.6
19:35 JST 11 Apr 2011 19:31 JST 11 Apr 2011 Fukushima-ken Hamadori M4.2
19:28 JST 11 Apr 2011 19:25 JST 11 Apr 2011 Fukushima-ken Hamadori M4.4
19:08 JST 11 Apr 2011 19:05 JST 11 Apr 2011 Fukushima-ken Hamadori M4.2
19:02 JST 11 Apr 2011 19:00 JST 11 Apr 2011 Fukushima-ken Hamadori M4.7
18:51 JST 11 Apr 2011 18:48 JST 11 Apr 2011 Fukushima-ken Hamadori M4.5
18:39 JST 11 Apr 2011 18:35 JST 11 Apr 2011 Fukushima-ken Hamadori M4.8
18:25 JST 11 Apr 2011 18:23 JST 11 Apr 2011 Fukushima-ken Oki M4.2
18:08 JST 11 Apr 2011 18:05 JST 11 Apr 2011 Fukushima-ken Hamadori M5.2
13:54 JST 11 Apr 2011 13:51 JST 11 Apr 2011 Fukushima-ken Oki M4.9
11:02 JST 11 Apr 2011 11:00 JST 11 Apr 2011 Ibaraki-ken Hokubu M3.8
10:20 JST 11 Apr 2011 10:17 JST 11 Apr 2011 Niigata-ken Chuetsu-chiho M2.8
06:38 JST 11 Apr 2011 06:36 JST 11 Apr 2011 Ibaraki-ken Oki M5.2
05:24 JST 11 Apr 2011 05:20 JST 11 Apr 2011 Ibaraki-ken Oki M4.3
02:47 JST 11 Apr 2011 02:45 JST 11 Apr 2011 Fukushima-ken Oki M4.5
01:24 JST 11 Apr 2011 01:21 JST 11 Apr 2011 Miyagi-ken Oki M4.6
00:10 JST 11 Apr 2011 00:07 JST 11 Apr 2011 Miyagi-ken Oki M4.6
http://www.jma.go.jp/en/quake/quake_singen_index.html