Bo Michael Hansen from Roskilde wrote on TV 2 News' Facebook-profile:
" Bright flash, very loud boom followed by a long lasting rumble for 20-30 seconds, at Roskilde. Birds awoke and started chirping in the gardens and nearby wetlands. As a part time fire fighter I was on my way out of the door, as I thought it was a powerful explosion."Anette Glentvor in Vesterbro wrote:
"The sky was gradually lit fully up. After that the sky turned green and ended with a short purple flash. About five minuttes after a long rumbling was heard. It sounded like thunder, except that the sound continued for a very long time."