LEWISTON, Maine — Northeasterners, keep your mittens, boots and show shovel handy.The Farmer's Almanac that goes on sale this week predicts a snowy winter from Maryland to Maine with five coastal storms to bring winter misery to the region.The publication, now in its 200th year, isn't afraid to go out on a limb with long-term weather forecasts that rely on a formula founder David Young first used in 1818 that utilizes sunspots, tidal action and other factors shunned by modern scientists.