``The Indian market is expected to open flat following weak closings and openings in global and Asian markets. The Sensex has supports at 16,590 and 16,480 and resistances at 16,740 and 16,820. The Nifty has supports at 4,970 and 4,930 and resistances at 5,020 and 5,050, ``said stock broker ICICI Securities while commenting on the market outlook.
Sensex has supports at 16,590 and 16,480: