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Atmospheric river event enters SF Bay Area again. Here’s how much rain it could bring

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Wet and windy weather is coming again.

The San Francisco Bay Area was forecasted to be hit by this rainy season’s second atmospheric river event Monday afternoon into the early hours of the following day, bringing a soaking rain and blowing winds. The National Weather Service said the upcoming system is anticipated to be weak and has moderate strength. It is forecasted to be less intense than the Oct. 24’s storm.

 “It’s not going to be as heavy as what we experienced in October,” Roger Gass, weather service meteorologist, said. “The main driver of this upper level system to the north is not as potent and is not as far south as the system that came in last month.”

The weather service said the rain and wind arrived as a cloud of moisture was guided by low pressure over the Gulf of Alaska toward the state’s coast.

Rain showers will first form on Monday afternoon over the North Bay before dispersing south and east. The weather service said the most severe rainfall can probably hit Monday night into early Tuesday “as the stronger push of moisture makes landfall with the cold front.” Wet conditions can stay into Tuesday until the evening but it could likely be replaced by dry conditions Wednesday.

Here is how much rain the areas are projected to experience, as reported by SFGATE:

·       Upslope coastal range areas including Cazadero to Mt. Tamalpais, over the Santa Cruz mountains, as well as the CZU August Lightning Complex burn scar: 3 to 4 inches of rain

·       North Bay valleys: 1.5 to 2.5 inches of rain

·       East bay hills, northern Monterey Bay and Big Sur area: 1 to 2 inches

·       Around San Francisco and the bay shore: 1 to 1.5 inches

·       South Bay and Monterey Bay: 0.25 to 0.50 inches;

·       and interior Central Coast: less than 0.25 inches