Natural-gas prices fell Friday morning toward a seven-week low as warm weather forecasts for late February reinforce concerns about weak demand and bulging stockpiles. Futures for March delivery recently fell 2.7 cents, or 1.4%, to $1.967 a million British thermal units on the New York Mercantile Exchange. Gas has lost 8.1% in what’s on pace to be four-straight losing sessions. Weather reports are showing an East-Coast cold…