Natural gas futures edged lower on Friday after investors priced in chilly weather forecasts and bullish supply data, locked in gains and later sold for profits. On the New York Mercantile Exchange, natural gas futures for delivery in April traded at USD3.474 per million British thermal units, down 0.33%. The commodity hit a session low of USD3.441 and a high of USD3.518. Cold and snowy weather continued to settle in for much of the heavily populated central and eastern portions of the U.S., which sent prices rising earlier. Investors also bought earlier in the day on bullish supply data released by the U.S. government on Thursday. The U.S. Energy Information Administration said in its weekly report released earlier that natural gas storage in the U.S. in the week ending Feb. 22 fell by 171 billion cubic feet compared to expectations for a drop of 167 billion cubic feet.