October Nymex natural gas (NGV25) on Tuesday closed up +0.047 (+1.67%). Oct nat-gas prices recovered from a 4-week low on Tuesday and moved higher after forecasts for hotter US temperatures sparked short covering in nat-gas futures.  Forecaster Atmospheric G2 said Tuesday that forecasts shifted warmer across the central and northern US for September 28-October 2, which could boost nat-gas demand from electricity providers to power increased air conditioning usage.   More News from Barchart Nat-gas pric ...