Green flare over London @ FL190
On Thursday night at around 22.00z, I was flying at FL190 approaching north London on a track towards Dover. A green flare/rocket shot up to our level about 2 miles ahead of us. We were one of 4 aircraft to observe this. ATC were informed and said they would have a look at radar traces to see where the object originated from.
Does anyone have any information on this? Can flares go up that high, if indeed it was a flare? This I find a little worrying.
cheers,
Ten Dollar: