Natural gas rebounded to small gains in topsy-turvy trading after noon weather updates show signs that a coming cold spell could hang on in the east into next week. Futures for February delivery settled up 2 cents, or 0.9%, at $2.138 a million British thermal units on the New York Mercantile Exchange. Losses had hit 1.8% in late-morning trading before the rebound. Noon updates to popular weather models showed lower temperatures than previously expected in the eastern states six to 10 days out, according to WeatherBELL Analytics LLC. About half of U.S. homes use gas for heat, making winter weather the market’s biggest driver. Traders have already been monitoring the weather because of a potential blizzard coming this weekend. Parts of the East Coast and mid-Atlantic states could get as much as 2 feet of snow and temperatures below 20 degrees Fahrenheit, according to Weather Services International in Andover, […]