Holiday travel plans and winter storms sent Americans searching for weather forecasts, resulting in a 14% increase in visitors to weather sites, according to comScore. The Weather Channel topped the category with 40.7 mln visitors, up 19% from November 2007. Sites experiencing significant growth included Yahoo! Weather (up 23% to 12.5 mln visitors), AOL Weather (up 52% to 6.3 mln visitors) and MSN Weather (up 34% to 5.8 mln visitors).