The National Weather Service issued several flood advisories Sunday for multiple areas surrounding Bay Area waterways, including many spots in the North Bay, and nearby Aptos and Soquel creeks.

Severe weather conditions, sustained rain and high tides threatened to bring flooding to low-lying areas that day, according to the weather service.

Soquel and Aptos creeks, as well as their tributary creeks, came under flash flood watch as of 3:12 p.m. after several streams in the area saw their water levels rise rapidly an hour of rainfall. The weather service advised residents to take caution in those areas as well as the Aptos Creek Basin. The flood watch was scheduled to expire at 7 p.m.

A flash flood warning issued for the North Bay, initially scheduled to expire at 2 p.m. was extended to 4:30 p.m. after the rainfall started up again in the early afternoon.

With the ground already saturated from rain the day before, there was a chance flooding of small streams and creeks in Sonoma and Napa Counties, though none of the major rivers in the area were expected to top their banks, according to National Weather Service forecaster Diana Henderson.

In Petaluma, areas off of Industrial Ave and Auto Row were under careful watch Sunday as they were prone to flooding by nearby creeks, but officials were not anticipating any issues.

At 4:30 p.m., the National Weather Service let the flash flood warning expire after rainfall had greatly decreased in Petaluma area and creek levels had fallen.

The weather service advised that any residents or business owners in those areas to take appropriate steps to prepare.

Motorists were advised to not attempt to wade or drive through flooded areas.

Anyone with an emergency should call 911.

“If flash flooding is observed, act quickly. Move up to higher ground to escape flood waters. Do not stay in areas subject to flooding when water begins rising,” said the National Weather Service announcement.