Words to Describe thunderheads

How thunderheads often is described ("________ thunderheads")

• billowy
• majestic
• big
• lofty
• distant
• vast
• ugly
• white
• cumulonimbus
• magnificent
• ominous
• angry
• great
• tall
• heavy
• brassy
• shaped
• huge
• massive
• few
• black
• gigantic
• gray
• puffy
• thick
• giant
• green
• monstrous
• beautiful
• purple
• piled
• immense
• spectacular
• east
• large
• cumulus
• blacker
• blue
• dark
• soft
• enormous