Intense downpours that could trigger dangerous flood threats in California are putting a damper on Christmas Eve travel plans, while the New England area braces for heavy snow.

A sweeping flood watch stretching more than 800 miles along California’s coast and interior plains is in effect this week atmospheric rivers move through.

This year is expected to be the busiest on record for holiday travel, but rough weather can make getting to your Christmas destination even harder.As a life-threatening storm heads to California, here's a look at the Christmas week weather forecast:TuesdaySnow is falling in the Northeast on Tuesday.

A powerful winter storm swept across California on Wednesday, with heavy rain and gusty winds leading to evacuation warnings for mudslides in parts of Southern California, bringing near white-out snow conditions in the mountains and hazardous travel for millions of holiday

The atmospheric river storm is likely to cause a slew of hazards this week across California, including urban flooding, downed trees, outages and travel delays.

Southern California floods will intensify as a powerful Christmas storm hits with heavy rain, strong winds, and snow. Forecasters warn widespread flooding, mudslides, and dangerous travel through Christmas Eve and Christmas Day.

Flash flood warnings were in effect in Los Angeles and most of southern California on Wednesday as one of the worst Christmas storms in recent memory brought heavy rain and fears of deadly mudslides.

A powerful winter storm fueled by atmospheric rivers is drenching California, raising flood and mudslide risks, creating whiteout mountain snow, and disrupting holiday travel across Southern and Northern regions.

Drenching rain from an atmospheric river-fueled storm triggered deadly flooding and evacuations over the weekend in Northern California — the start of a hazardous holiday week for the state.