Weatherwatch: How English summer clouds can warn of trouble ahead

Mackerel skies and mare’s tails signal arrival of warm fronts that push moisture to high altitudes and creates distinctive clouds “Mare’s tails and mackerel scales make lofty ships to carry low sails,” runs an old English saying about summer skies. Mackerel skies are cirrocumulus or altocumulus c...

First seen 2h ago · latest update 2h ago · World · other