But it's been an ominous cloud over my understanding of local church ministry for decades.

The last good showers, he said, had been in 2014, but ominous clouds were dotted all over the skies.

The weather forecast, however, was for showers with heavy downpours in some places, and sure enough by mid-morning ominous clouds began to gather.

This mixes and condenses overnight, causing ominous clouds in the mornings.

There are ominous clouds on the horizon.