Today's quake was deeper than the one last month, coming from a depth of 11.5 miles compared with the April 25 quake which hit 9.3 miles. Shallower earthquakes tend to cause more damage at the surface.
The BBC's Simon Cox, who was in Kathmandu when the quake hit, said: "You could feel it really strongly. You could feel it went on for about 25 seconds - the ground was shaking, the birds started squawking, you could feel the buildings shaking.
"There was another aftershock and people were all out on the street. That aftershock really added anxiety and panic. People started crying.
Women cower in fear as the quake struck in Nepal
"They are calm but you can tell they are all scared."