Last week my friend Renee told me her Grandmother always said the weather would change when we see a Mackerel Sky. I had never heard that before.
On Sunday the 5th, I stared up at a Mackerel Sky
Mackerel skyis a popular term for a sky covered with extensive cirrocumulus or altocumulus clouds arranged in somewhat regular waves and showing blue sky in the gaps. The pattern resembles the scales on a mackerel, thus, the name. In Germany and France they are known as 'sheep cloud', as their pattern resembles a flock of sheep, also they are sometimes called buttermilk sky in the UK
Above is a shot through our trees of the sky the day before.
Mackerel sky, mackerel sky - never long wet, never long dry
Mare's tails and mackerel scales make lofty ships take in their sails
Is there a true weather fact supporting this? Oh, yes there is. Small, white and fluffy cirrocumulus clouds typically consist of ice crystals and form at altitudes around 6,000 to 10,000m (18,000 t o 30,000ft). They often form well ahead of depressions and their associated fronts. Mackerel skies and mares' tails describe forms of cirrocumulus and twisted sheaves of cirrus respectively implying strong high-level winds.
Renee's grandmother was right. to read more about the specific changes go to WeatherOnLineUK photo below from WeatherOn Line
If you know how to read these skies, you can predict what the weather will do. I leave it to those of you who wish to read the info to click on the link above