May Nymex natural gas (NGK24) on Friday closed up by +0.011 (+0.62%). May nat gas prices Friday recovered early losses and posted modest gains on some pre-weekend short covering. Nat-gas prices on Friday initially moved lower on ample supplies, with US nat-gas stockpiles 38.9% above their five-year average for this time of year. Nat-gas prices were also weighed down by forecasts for warmer US temperatures, which will reduce heating demand for nat-gas. NatGasWeather said on Friday that it expects the northern US to see relative warmth from April 12-19. Nat-gas prices have collapsed this year, w…