Nepal second quake: SA man describes scenes of panic

At least 16 people have died after a second powerful quake rocked Nepal this morning.

Nepalese patients lie on stretchers in an open area after being carried out of a hospital building as a 7.3 magnitude earthquake hits the country, in Kathmandu, on May 12, 2015. Picture: AFP.

JOHANNESBURG - A South African man who is in Kathmandu has described scenes of panic during this morning's earthquake.

At least 16 people have died after the second powerful earthquake rocked Nepal this morning.

"Everybody was panicking, running out to the streets. But it seems to have settled down a little bit. There is a lot of fear and panic, obviously."

He says the feeling of ground was shaking beneath him was unforgettable.

"I looked outside and it felt like whole building was swaying. And this is what's scary about this whole thing; it's like a drunk feeling."

Parents could be seen clutching children tightly and hundreds of people were frantically trying to call relatives on their mobile phones.

Shopkeepers closed their shops and the streets were jammed with people rushing to check on their families.

"I'm heading straight home," said Bishal Rai, a man in his 20s, who said he was trying to contact his family in the north of the capital.

The Nepalese are still reeling following a 7.8 magnitude earthquake which hit just two weeks ago.

This morning's 7.3 magnitude quake struck 80 kilometres from Kathmandu.

WATCH: A video taken near near Dhunche in Nepal of the second quake to hit the country. Video courtesy of International Federation of Red Cross and Red Crescent Societies.

Here's a video we have just received from @redcrosscanada near Dhunche, #Nepal, after today's #NepalQuake. pic.twitter.com/R82VlU4PLs

CNN's Sumnima Udas says relief efforts will be dealt a blow by this latest quake.

"Because we are talking about high altitudes, only certain kinds of helicopters can go there. They can only bring a certain amount of relief, and only bring back a certain amount of people; maximum three or four people. And that's why the whole relief operation in general in Nepal has been so complicated, because of the terrain."

The quake's epicentre was close to the Everest base camp, which was evacuated after an avalanche triggered by last month's quake killed 18 climbers.

Mountaineers seeking to scale the world's tallest peak have called off this year's Everest season.

Last month's quake killed at least 8,046 people and injured more than 17,800.

Additional reporting by Reuters.