clouds rolled in

[dilermando]

Consider the text below.

I was getting tired and cranky. But the Adirondack shelter was not to be found. The skies were growing dark, and clouds rolled in. I began to panic.

If you say that the clouds are rolling in, do you mean that they are moving fast too?

[MrPedantic]

Hello Dil.,

The clouds are moving at moderate to high speed; not, at any rate, at a lazy pace. But when clouds "roll in", there is also an implication that they are large cumulus or nimbo-cumulus – i.e. not dainty little things.

Best wishes,

MrP