Another word for looming

I could see another storm cloud looming on the horizon.

So, I'm assuming he isn't the looming problem.

From their well-watered rice-fields, the main source of their wealth, they could see the giant Himalayas looming up against the clear blue of the Indian sky.

The great question of the Spanish succession was looming in all men's eyes, and though partition treaties between the interested powers were concluded in 1698 and 1700, it is practically certain that the French king held himself little bound by them.

Maybe it was his looming death, or maybe it was the energy from her cool touch that calmed him from the inside out, but he wondered what life would've been like had his family survived.