Overview of the two consecutive streams in the large impact, impact 12, as seen in UV (1600 Å) and EUV (171 Å) channels. Each panel of four shows in a) a composite of 1600 Å emission and tracks of downflows from 193 Å images and b)–d) base-difference images chosen to show the movement of the bright splash emission. The red/blue contours outline magnetic fields of +/−50 G. The base image was taken at 7:50:00 UT. The 171 Å images are scaled between ± 300 DN s^-1. Left: the first EUV brightenings were from low density impacts that dissipated in the corona. Middle: a strong splash was created by the first series of chromospheric impacts. Right: the splash from the first series prevented the second series of fragments from reaching the chromosphere so there was very little 1600 Å emission. The movies show the full sequence of base-difference images at 171 and 193 Å.