Thunder like deep sound, faint but noticable. The delay was quite long.
Persistent train
Observation
Yes
Duration
99.99s
Length
30°
Remarks
Pronounced smoke trail. Thicker and longer presisting section where I saw one of the flashes that happened during the larger event. 100 seconds is the lower end - I have two bad photos at about 60 seconds apart. The later still shows the trail pronounced but somewhat distorted due to air movement just like a plane's contrail.
