Torrential rain and snow across the country this week could disrupt the record number of travelers expected to be on the roads and in the skies for the Thanksgiving holiday.slotastic

Waves of storm systems are expected to move through the East Coast this week, threatening to disrupt some Thanksgiving travel on Tuesday and bringing rain and potentially snow on Thanksgiving Day. Out West, another storm may take aim at California on Monday and Tuesday.

A mild storm was sweeping across the East Coast on Tuesday morning. Forecasters expect it to bring mostly nuisance rain that may slow down some travelers, especially at congested major airports in the Northeast.

Tropical rainfall was surging into California again on Tuesday, less than a week after a strong atmospheric river hit some places in Northern California with over a foot of rainfall. This week’s event should be weaker, affecting areas farther south in Central and Southern California, rather than in places that are still saturated from last week. Any rain that falls in Los Angeles should be lighter, while the heavier rain of a few inches is likely to fall over areas farther north, like Santa Barbara.

It’s important to check the weather forecast along your entire route and to stay off the roads if rain or snow makes travel too dangerous, Aixa Diaz, a spokeswoman for AAA, advised.

“Try to have a Plan B,” Ms. Diaz said, adding that if it’s possible, try to leave a day earlier or later to avoid being on the road during the worst of the storms. “Ultimately your loved ones and your family and friends, they want you to get there safely.”

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