Shimla records -4°C, Srinagar -2°C; cold spell to continue for some time. With mercury plummeting to sub-zero level in Narnaul, the region today reeled under intense cold wave. The icy winds blowing in the region are expected to continue in the next few days, weatherman has predicted. Cold wave conditions intensified and Shimla recorded a stinging - 4 degree C, while Srinagar reeled under -2 degrees C. Mercury slid to -1 degree C at Narnaul and hit the sub-zero level at Amritsar.