Bright silvery blue clouds can then be seen in the night sky. As meteorologist Andreas Machalica of the weather portal wetter. This is the coldest part of the earth's atmosphere, the so-called mesopause.
The temperatures there are currently around minus degrees, according to Machalica. The low humidity freezes to ice crystals and clouds form.
When the sun is between six and 16 degrees below the horizon, these ice crystals are illuminated, while the rest of the sky is dark. According to Machalica, the luminous night clouds are best visible between 50 and 60 degrees latitude. Roughly speaking, this is the area between Frankfurt and Oslo in Norway.
The phenomena occur more and more frequently in recent years. Normally such nocturnal cloud sightings peak when the sun is at its year minimum. This year marks exactly the opposite, a predicted solar maximum.
Noctilucent clouds over the North Pole, June 10, View Comments. Sponsored Stories Powered By Outbrain. RoboBee X-Wing.
Download the perfect night clouds pictures. Find over + of the best free night clouds images. Free for commercial use ✓ No attribution required. Noctilucent clouds, or night shining clouds, are tenuous cloud-like phenomena in the upper atmosphere of Earth. They consist of ice crystals and are only visible.
More science. Whether or not we will be able to see them depends on whether it is a clear night or not.
According to Weeronline, the possibility of clear skies will improve after Thursday 14, June. During the evening of Friday 15, June, there is a great chance that those in the southwest of the Netherlands will be able to see the night clouds.
In the evening, the clouds should be visible if you look to the northwestern sky. The clouds may also be visible on the northeast horizon just before sunrise, but as it is already light outside around am, you would have to be up very early to spot them. Towards the end of this week and during the weekend, conditions will be more favourable if you want to catch a glimpse of these special clouds, which are usually seen between May and the start of August.