What are Lens Clouds? (Altocumulus lenticularis)
Lens clouds are saucer, lens or lentil-shaped clouds that form when wind blows moist air over mountains. Their formal name is Altocumulus lenticularis (lenticula means…
Tag: weather-reading
EasyJet Calms Orographic Storms
My thanks to all the team at the Mosto Festival in Italy for organising such a fun event based around the theme of water. I…
Why is visibility so good in the mountains?
Many visitors to cold mountains are struck by the amazing visibility. The visibility is so good that it can trick the brain into thinking things…
Three Generations of Nature Readers
My thanks to Kareem Dieng and his family for reading my books. That’s Kareem with The Secret World of Weather, ‘Pops’ reading Lost Art of…
Saharan Dust Moon Halo
There was a 22 Degree halo around the moon a couple of nights ago. This is a sign of cirrostratus, a high veil of icy…
How to Beat the Wind
I’ve been faced with an interesting weather challenge recently. I needed to take a sail off my boat for maintenance. This is something I can…
What is a Frost Hollow?
A frost hollow is a local low point in a landscape where cold dense air collects overnight. It is also known as a ‘frost pocket’.…
Dew: A Sign of a Clear Skies
There are many signs within dew, but the simplest one is that you are most likely to see it after clear and cloudless skies overnight.…
Two Cloud Signs Showing Rain Likely Soon
There are two strong cloud signs in this picture showing that rain is likely soon. A heavy downpour started 20 minutes after this photos was…