Overview of the rapidly moving pore in HARP 1367 observed by SDO/HMI. Panel a: HMI continuum image shows the northwest quadrant of the solar disk on 2012 February 6. The target region is located at N10W18 as indicated by the green box. Panels b,c: close-up views of the HMI continuum image and line-of-sight magnetogram during the flux emergence. The red arrow in panel b indicates the direction of the pore movement. The blue arrows in panel c mark the emerging flux elements. The cyan arrow in panel c points to the appearance of the weak magnetic fields in front of the pore. An animation is available online to show the dynamic details. The animated images run from 2012 February 5 20:00 UT to 2012 February 6 07:56 UT.