Weather Awareness: First Significant Rain Event of the Season Expected Early Next Week

Posted on October 10, 2025


Forecast map showing 1 to 1.5 inches of rain expected across most of the Bay Area from Monday through Wednesday, October 10 update.

According to the latest update from the National Weather Service, the Bay Area — including the City of Sonoma — is expected to experience its first significant rain event of the season early next week.

While only light rain is possible today (Friday), a stronger system is forecast to bring heavier and more widespread rainfall Monday through Tuesday, with lingering showers possible into Wednesday. Current projections suggest around one inch of rain, with localized areas potentially receiving more. Thunderstorms are also possible.

Because the region hasn’t seen significant rain in some time, much of the initial rainfall will be absorbed by the dry soil, helping to minimize the potential for flooding and downed trees. Still, this is a good reminder to stay alert and prepare for the first real soaking of the season.


How to Prepare

  • Clear storm drains and gutters to help prevent localized flooding.
  • Secure outdoor items that could be displaced by wind or rain.
  • Charge electronic devices in case of brief power outages.
  • Drive with caution — roads may be slick after the long dry stretch.

How to Report Localized Flooding or Hazards

To report flooding, fallen branches, or other storm-related hazards within Sonoma city limits:

  • During regular business hours (Mon–Fri, 8:00 a.m.–5:00 p.m.): Call the City of Sonoma Public Works Department at (707) 938-3332.
  • After hours: Call the Sonoma Police Department Non-Emergency Dispatch at (707) 996-3601.
  • For emergencies posing an immediate threat to life or property, such as downed power lines or trees blocking roadways, dial 9-1-1.

Stay Informed

Check the National Weather Service forecast regularly at weather.gov/bayarea and listen to local news or NOAA Weather Radio for updates, watches, and warnings.

Visit our Emergency Preparedness page for safety tips, including an emergency supplies checklist, and learn more about how to protect yourself and your family at Ready.gov/floods and SoCoEmergency.org.

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