A high-velocity dust storm accompanied with gusty winds and squall hit Delhi and the National Capital Region (NCR) on Sunday evening leaving 2 dead and several others injured. The sudden change in weather brought the mercury a few notches down in Delhi, Noida and Gurugram, MET sources said. The massive storm with a wind speed of 120 km per hour uprooted several trees and electricity poles, dipped the visibility and brought traffic to a standstill, while pedestrians rushed to seek shelter.