The Sensex is likely to open higher following the flare up in the late trades yesterday. However, volatility may continue ahead of Budget day tomorrow.While the Nikkei has slipped 46 points to 18,169, and the Hang Seng has plunged 136 points to 20,372.The Sensex is likely to face resistance around 13,780-13,820-13,860. On the downside, the index may find support around 13,520-13,480-13,440.