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: cloudspotting
What is a Distrail?
A distrail is the clear path through a cloud formed in the wake of an aircraft. Distrails form because the aircraft turns the water droplets…
Nature’s Clues and Signs – Tarn, France
Here’s my selection following a short visit to friends in the Tarn region of southern France. Stately Homes The older, bigger and grander a building…
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…
A Plein-Air Artists’ Manual
One of the great joys of natural navigation is that it intrigues such a wide variety of people, something it shares with food. We can’t…
The Meaning of Cloud Streets
On a flight back from Spain to the UK, we were treated to a great display of “cloud streets” over France. They form parallel to…
When clouds appear like rocks and towers…
… the Earth’s refreshed by frequent showers. It is so rewarding when weather lore helps us remember a clue. It is doubly satisfying when this…
The Foehn Fish
Another very interesting email from Prof. Otta Wenskus: Hi Tristan, I just read your paragraph on altocumulus lenticularis. Sadly, while Ifind them beautiful, my feelings…
Feedback from Michigan
My thanks to Tim Webb for reading my books and writing with some local feedback: I thought you may enjoy this photo. Contrails in west…