Fly-in fly-out (FIFO) workers have been treated to a lightning show in Western Australia's north as a tropical storm rolled through.

Monsoonal rains hit the Kimberly region overnight and, in the Pilbara, a broad trough produced an impressive lightning display.

The storm lasted a few hours, bringing thunder, wind, and rain over the region.

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FIFO worker Simar Tegh managed to capture the lightning display on his phone.

"I've been up here for a while and I've never seen something like that and even if I did, I've never been able to capture it on my camera," he said.

"So, I think yeh the stars aligned on that one."

More storms are expected this week in the Pilbara as the monsoon trough becomes more active.