06/12/2016 8:31 AM AEDT | Updated 06/12/2016 8:57 AM AEDT

Man Dead And Woman Injured In Lightning Strike On Mt Warning

A group of people was camping on the summit when a storm struck.

UIG via Getty Images
Mount Warning in Wollumbin National Park.

A man has died after two people were struck by lightning on the summit of Mt Warning in northern NSW.

Police said the pair had been camping on the mountain when a storm struck.

Emergency services were alerted about 4.50am on Tuesday and undertook a rescue mission on the 8km track to the mountain top.

"It's believed three or four people may have camped on the summit overnight, but the sexes, age and nationality of those involved is yet to be confirmed," police said.

Storms lashed northern NSW and south east Queensland last night, with ENERGEX estimating 20,000 people were without power on the Gold Coast while the Northern Rivers region received 40mm of rain overnight.

The mountain, near Murwillumbah, is a former volcano that's become popular with hikers for the five-hour round trip to the summit.

This is a developing story. More to come.