clouds mass

Examples (10)

• Dark clouds mass on the horizon, signaling a storm.
• Ominous clouds massed over the mountains before the blizzard hit.
• Look how quickly the storm clouds are massing to the west.
• As we climbed, dark clouds were massing overhead, forcing us to turn back.
• The forecast says thunder clouds will mass this afternoon.
• The grey clouds have massed so thickly that it looks like dusk.
• We watched from the shore as the angry clouds massed above the sea.
• When the clouds mass like that, it's a sure sign of heavy rain.
• The sailors grew anxious, seeing the dark clouds massing with such speed.
• We could see the clouds begin to mass just before sunset.