The Sensex at the Bombay Stock Exchange surged 230 points, or 1.2 percent, to 18,850 in the afternoon trade, a shortwhile ago. The Nifty at the National Stock Exchange climbed 61 points, or 1.1 percent, to 5,533.In other Asian markets, key indices in Japan, China, Hong Kong and Singapore gained between 0.2 percent and 2 percent, in intra-day trade, today.