Natural gas prices posted their biggest daily increase since late July after government data showed a smaller than expected increase in the amount of natural gas in storage Thursday. Natural gas futures for October delivery jumped 13 cents, or 4.86% to $2.806 a million British thermal units on the New York Mercantile Exchange, reversing two straight days of losses earlier in the week. The U.S. Energy Information Administration said natural gas stockpiles grew by 36 billion cubic feet last week, compared with the 43 billion cubic feet forecast by traders and analysts surveyed by The Wall Street Journal. “It definitely came in lighter than expected, said Teri Viswanath of PIRA Energy Group, of the storage addition. “It looks more like a first half of August, rather than a second half of August build.” The report is a widely watched measure of supply and demand. A smaller-than-expected addition to storage […]