Storm Forecast: How Much Rain Will Bay Area Get?

A storm hit the Bay Area late Monday and Tuesday, bringing heavy rain, strong winds and high surf to the region.

Here's what to know about the winter weather system.

Use interactive radar to track the storm

Check out Vianey Arana's latest forecast in the video below.

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Rain and winds taper off as the storm begins to move out Tuesday afternoon. Vianey Arana has your Microclimate Forecast.

Wx trend for the rest of today shows decreasing rain by afternoon/evening. A mostly dry break for Wednesday before rain returns by evening into Thursday morning. 🌧️ #CAwx 12/27/2022 pic.twitter.com/QzccoXJw5q
— Rob Mayeda (@RobMayeda) December 27, 2022

How much rain will the Bay Area get?

Thanks to the "potent weather system," rainfall totals in the coastal mountains could range from 2 to 4 inches and reach as high as 5 inches in some spots, according to the National Weather Service. The interior mountain ranges are expected to pick up 2 to 3 inches of rain. The valleys are forecasted to receive 1.5 to 2 inches.

Follow Meteorologist Rob Mayeda on Twitter for the latest updates on rainfall totals.

Rain totals nearing 6” at Mt Tam and most Ross Valley watershed creeks saw rapid rises before leveling off…note the low starting pt earlier this morning. From here saturated ground/ongoing runoff will have water levels running higher as more rain moves in through the week. pic.twitter.com/1HTDuZJxXW
— Rob Mayeda (@RobMayeda) December 27, 2022

Rain totals as of 8am has 4”-5”+ near Mt Tam/Ross Valley and 2”-4” avg around most of the North Bay. Nearing 3”-5”+ in the Santa Cruz Mtns. less in the Santa Clara Valley. #CAwx 12/27/2022 https://t.co/fG2beR5WrF pic.twitter.com/YPIDWHuJBN
— Rob Mayeda (@RobMayeda) December 27, 2022

Flood watch issued in parts of the Bay Area

A flood watch went into effect early Tuesday morning for the North Bay, the Peninsula coastline, the Santa Cruz mountains and northern Monterey Bay, according to the weather service.

Excessive runoff could lead to flooding along rivers, creeks, streams, and in low-lying areas, the weather service said in an advisory.

Sonoma County creeks seeing flooding including Colgan Creek near Sebastopol and Green Valley Creek / Martinelli Road. (1/2) #CAwx 12/27/2022 https://t.co/WgpI2XPnOj pic.twitter.com/ajXk6PMXnj
— Rob Mayeda (@RobMayeda) December 27, 2022

Visit NBC Bay Area's weather alerts page for full details.

The storm is hitting the North Bay especially hard as residents in Marin County keep an eye on a fast rising creek and those in Sonoma County are focused on burn scars. Thom Jensen reports.

The North Bay will be the first to feel the impact of a storm hitting the Bay Area this week. Pete Suratos reports.

Wind advisory expires

A wind advisory was issued for Monday night into Tuesday morning for North Bay coastal areas and mountains, San Francisco, Peninsula communities, the East Bay hills, and the Santa Cruz Mountains.

Visit NBC Bay Area's weather alerts page for the latest.

Winds over peaks and ridgetops are still gusting around 40 to 45 mph. However, they have begun to weaken and are not as widespread as they were. Occasional sporadic stronger gusts will be possible, but the Wind Advisory will be allowed to expire at 9 AM.#CAwx pic.twitter.com/unSwLOIIe6
— NWS Bay Area 🌉 (@NWSBayArea) December 27, 2022

bay area weather Dec 25, 2022

Bay Area Forecast: Moderate to Heavy Rain, Gusty Winds, High Surf

Dec 23, 2022

King Tides Brings Coastal Flooding in Bay Area

High surf advisory along the coast

Coastal areas will contend with dangerous conditions. A high surf advisory is in effect from 9 a.m. Tuesday until 9 a.m. Wednesday, according to the weather service. Large breaking waves up and down the Bay Area coastline could reach 20 to 25 feet in height.

Beachgoers are advised to keep a safe distance from the breakers, stay off rocks and jetties, and always keep an eye on the water.

Visit NBC Bay Area's weather alerts page for the latest.

Large incoming swell and a strong storm system will combine for hazardous beach conditions due to large breaking waves Monday through Wednesday mornings. Breaking waves expected to peak at 20-25 ft Tuesday. BHS in effect Mon-Tues, then High Surf Adv in effect Tues-Wed. #CAwx pic.twitter.com/uUcDr2u7zS
— NWS Bay Area 🌉 (@NWSBayArea) December 26, 2022

For the latest forecast and weather updates, visit NBC Bay Area's weather page.

Bay City News contributed to this report.

With a series of significant storms in the forecast over the next seven days, Contra Costa County Public Works are taking an all-hands on deck approach, with extra staff on hand to respond to emergencies. Velena Jones reports.