Strong tremors have been occurring around the world in recent days. Jalisco, Mexico recently experienced a 6-pointer, while the seabed region near Sendai, Japan have had a number of 4's and 5's.

M 4.8 - SPAIN - 2015-02-23 16:16:29 UTC
Source: CSEM/EMSC
http://www.emsc-csem.org/Earthquake/earthquake.php?id=428843#map

Magnitude mb 4.8
Region SPAIN
Location 39.04 N ; 2.65 W
Depth 10 km
Distances 177 km SE of Madrid, Spain / pop: 3,255,944 / local time: 17:16:29.4 2015-02-23
149 km SE of Toledo, Spain / pop: 82,291 / local time: 17:16:29.4 2015-02-23

70 km W of Albacete, Spain / pop: 169,716 / local time: 17:16:29.4 2015-02-23
14 km NW of El Bonillo, Spain / pop: 3,161 / local time: 17:16:29.4 2015-02-23

Selected comments from those who felt quake in Spain:

Witness location : Aranjuez (Spain) (137 km NW from epicenter)
I was in bed due to illness and felt the bed shake. Slightly disorientating wondering what had happened. Lasted maybe 5 or 10 seconds.

Witness location : Toledo (Spain) (151 km NW from epicenter)
I was sit and suddenly I felt how my head and all my body was moved during 4-5 seconds

Witness location : Yecla DO (Spain) (142 km E from epicenter)
Sitting on a office chair at ground level, it was pretty notable. The table with monitors even shook for a short moment. The first few seconds, i noticed vibrations via my chair followed by a stronger movement making even the table shake for a second.