They glow in the dead of the night when everything should be dark.
And this weekend the region got a spectacular, if slightly eerie view of them.
Noctilucent clouds (the Latin name that basically translates to 'night shining') are a strange phenomena in the upper atmosphere.
You can only see them during the summer.
They are formed from small ice crystals so high up that they are still catching the sun even though, for those of us on the ground, it has set.
Owing to high tides there are several flood warnings for the North Sea along the east coast.
They come into force for Wednesday morning's high tide.
Wave overtopping is expected to cause some flooding in the areas covered by the warnings.
Farmers attending an event in County Durham say they want more priority given to agriculture by whoever forms the next government.
Sheep farmers from across the north gathered near Tow Law at what is a critical time for their industry.
Helen Ford reports:
A public inquiry launches on May 31 into whether planning permission should be granted for a new open cast mine in Northumberland.Read the full story ›
One of Britain's oldest and biggest oil platforms has arrived on Teesside for decommissioning.Read the full story ›
Residents and businesses in York warned to take immediate action.Read the full story ›
The Environment Agency has put a flood warning in place for the River Ouse in York.Read the full story ›
School children from Ayresome Primary School will also be joining the efforts to tidy up Ayresome Gardens.Read the full story ›