Cloud atlas

The ten genera, fifteen species and nine varieties of the WMO International Cloud Atlas, with symbols and abbreviations.

Accessory clouds

Small clouds that live alongside a mother-cloud.

pilcap

A smooth cap or hood above a rapidly rising convective turret.

Applies toCu Cb

velveil, sail

A thin horizontal veil above or attached to the upper part of a convective cloud.

Applies toCu Cb

panshred of cloth

Ragged shreds forming below a precipitating cloud, sometimes merging into a continuous layer.

Applies toAs Ns Cu Cb

flmriver

Bands of low cloud feeding into the inflow region of a severe convective storm — beaver's tail.

Applies toCb