The National Weather Service in Gray Maine has issued a * Snow Squall Warning for... Central York County in southwestern Maine... Southeastern Androscoggin County in southwestern Maine... Southwestern Lincoln County in south central Maine... Cumberland County in southwestern Maine... Central Sagadahoc County in south central Maine... East central Rockingham County in southern New Hampshire... Southeastern Strafford County in central New Hampshire... * Until 600 PM EST. * At 454 PM EST, a dangerous snow squall was located along a line extending from Naples to near Seabrook, moving east at 20 mph. HAZARD...Intense bursts of heavy snow. Gusty winds leading to blowing snow and visibility rapidly falling to less than one-quarter mile. Wind gusts greater than 35 mph. SOURCE...Radar and trained spotter. IMPACT...Travel will become difficult and potentially dangerous within minutes. This includes the following highways... Interstate 295 between mile markers 1 and 35. Interstate 95 between mile markers 1 and 70. Interstate 95 in New Hampshire between mile markers 9 and 16. Locations impacted include... Portland, South Portland, Auburn, Biddeford, Portsmouth, Brunswick, Westbrook, Hampton, Kittery, Bath, Alfred, Topsham, Naples, Sanford, Wiscasset, Cumberland, Saco, Gorham, Falmouth, and Kennebunk. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow Down! Rapid changes in visibility and road conditions are expected with this dangerous snow squall. Be alert for sudden whiteout conditions. SNOW SQUALL...OBSERVED