Noctilucent clouds on Sunday

[PaulR]

Did anyone else spot these eery pale blue clouds very late on Sunday night? I've seen noctilucent clouds like these outside London but was amazed to see them glowing so strongly through the glare of central London.

http://i46.photobucket.com/albums/f130/PaulRide/NLC20090712.jpg

[woofmarkthedog]

Ohhh Yah

'mazing

[PeckhamRose]

Is that the light from the sun very very low in the sky shining up on them?

Or the lights from the City doing the same?

[PaulR]

The sun had set a few hours earlier. The clouds are still lit by the sun because at this time of year the sun is never very far below the northern horizon and these clouds are about 50 miles above the earth's surface (so just about out of reach of the glare of London's bright lights!)

[SteveT]

London's answer to the northern lights.