Massachusetts residents were sloshing their way through a messy winter storm that descended on the state on the day many people take to the highways for Thanksgiving travel."Heavy snow across much of interior Massachusetts will impact Wednesday travel," the National Weather Service said in issuing a winter storm warning for almost all of the state away from the coast.Hour-by-hour snowfall futurecast | Latest video forecastIn central and western Massachusetts, the heaviest snow was expected between 12 p.m. and 8 p.m. "I'm not ready," Vee Vorasane, of Marlborough, said. "I'm not ready."A winter storm warning means the likelihood of 6 inches of snow or more is high.  A winter weather advisory was issued for the immediate coast with the exception of the south coast and Cape Cod, where mostly rain was forecast.Check closings/delays | NWS town-by-town forecast (experimental)"It's a case of bad timing.  It's coming on one of the busiest travel days of the year," said Storm Team 5 meteorologist Cindy Fitzgibbon.The storm grounded hundreds of flights, making highways hazardous along the congested Washington-to-Boston corridor.Central and western Massachusetts were seeing a major snowstorm."Ten inches of snow are possible in that area, including the city of Worcester," said Fitzgibbon. Outside the Interstate 95 corridor, snowfall rates of 1 to 2 inches per hour were forecast.  Inside I-95, snow was predicted to mix with rain and sleet."It's a classic nor'easter set up. Rain at the coast, snow inland and a mix in between," said Storm Team 5 meteorologist Mike Wankum.So many travelers took the advice of state highway officials to leave for the holiday on Tuesday that it resulted in backups as long as 60 miles.The storm also caused problems in New Hampshire. Numerous crashes, and heavy wet snow brought down utility poles and lines, resulting in more than 170,000 people without power the night before Thanksgiving.The storm was forecast to end early Thursday morning, but many traditional Thanksgiving Day football rivalries could be played on snow-covered fields.Strong winds along the coast are also forecast for Wednesday and Thursday morning.