A pair of Pacific 994-millibar low-pressure systems and associated cold fronts will produce moderate gale-force to fresh gale-force, 32 to 46 mph southerly winds, with gusts to 55 mph Thursday.

The rain that started Wednesday morning will continue into Thursday night.

One wave of heavy rain associated with an “atmospheric river” is likely Thursday morning, when rainfall rates could reach 0.33 of an inch per hour.

Abundant subtropical moisture associated with this storm will produce mild temperatures, and snow levels are expected to rise to 7,500 feet.

With an abundant snowpack already in place, flooding will be a concern in areas below mountain ranges.

It appears total rainfall amounts will range between 1.5 and 3.5 inches.

Mostly dry weather is forecast for Friday through Sunday, with gusty north to northwesterly winds.

An unsettled and wet weather pattern is expected to develop Monday and Tuesday.

Santa Ynez Temperatures

Thu Fri Sat Sun Mon Tue

44/58 40/57 39/56 37/53 36/53 37/55

Seawater Temperatures

Pacific Ocean waters along the coastline will range between 54 and 56 degrees into Sunday.

Surf Report

Moderate gale-force to fresh gale-force, 32 to 46 mph southerly winds will produce 12- to 14-foot southerly shallow-water seas Wednesday into Thursday morning, followed by a 9- to 11-foot northwesterly deep-water swell, with an 11- to 20-second period Thursday afternoon and night.

That swell will decrease to 7 to 9 feet, with an 11- to 19-second period, on Friday.

An 11- to 13-foot northwesterly deep-water sea and swell, with a 7- to 17-second period, is forecast along our coastline Saturday, decreasing to 9 to 11 feet, with a 7- to 18-second period, on Sunday.

Your Weekly PG&E Safety Tip

Storms and other events can sometimes cause power outages. During and after such an event, keep away from flooded areas and downed trees. Those areas can hide downed power lines that are energized.

Call 911 immediately if you see a downed power line. Then, call Pacific Gas and Electric Co.’s Customer Line toll-free at 800-743-5000.

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John Lindsey is Pacific Gas and Electric Co.’s Diablo Canyon Power Plant marine meteorologist and a media relations representative. Email him at pgeweather@pge.com or follow him on Twitter @PGE_John.