Forecasters in the US have warned of another round of winter weather that could complicate travel leading up to Thanksgiving.

Santa Rosa, California, saw its wettest three-day period on record with about 32 centimeters of rain falling by Friday evening, according to the National Weather Service in the Bay Area. On Saturday vineyards in Windsor, about 16 kilometers to the north, were flooded.

A late November storm is set to bring a variety of impacts, including severe weather, accumulating snow, high winds and the first real blast of wintry-like temperatures this season, which could threaten travel at the start of Thanksgiving week.

Winter weather alerts were issued in parts of New York state, as the region is set to be hit by a powerful winter storm packing snow, heavy rain and strong winds. Here's what you need to know.

Thousands in the Pacific Northwest remained without power after multiple days in the dark. The National Weather Service office in Sacramento, California, issued a winter storm warning for the state's Sierra Nevada for Saturday through Tuesday, with heavy snow expected at higher elevations and wind gusts potentially reaching 55 mph (88 kph).

Howling winds, cold temperatures and even the chance of heavy snow could be in store for many Americans across the country as they gather for their Thanksgiving feasts next week. Forecasters said there is a risk of "unsettled weather" across much of the country over the holiday from an area of low pressure in the mid-levels of the atmosphere,

Across the U.S. major storms are dumping snow and rain, with another system expected to arrive for Thanksgiving.