The advisory said a storm currently is moving through the Pacific Northwest, with the tail end coming through far Northern California.
Rain is expected Thursday, with up to 2 inches possible during the day, and on Friday, and also is likely on a daily basis through the weekend and into early next week, the agency reported.
Residents also are urged to be aware of the chance of gusting winds reaching speeds as high as 24 miles per hour from the southwest and south southwest, according to the weather forecast.
As for temperatures, daytime highs into next week are forecast to be in the 40s, and will dip into the low to mid 30s at night, the National Weather Service said.
The second storm is expected to move through interior Northern California on Thursday. Forecasters said rain should begin midday and continue through the evening.
That will be followed by another storm system – the strongest of the three – that will pass through the region from Friday evening to Saturday, bringing more rain, the National Weather Service said.
Travelers and those pursuing outdoor activities are urged to be prepared for the colder, cooler weather.
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