Forecasts for milder weather and lower heating demand have seen natural gas prices plummeting by over 12% on Monday, after a strong rally on Friday to five-week high. At 10:07 a.m. EST on Monday, front-month gas futures for April delivery were down 12.30% to $2.639 per million British thermal units, the biggest drop since January 30th, when nat gas prices shed 14%. The large drop comes only days after Freeport LNG boosted exports at its Texas plant after reopening last month following a shutdown that had lasted for eight months. At…