Active AlertsSan Francisco Peninsula Coast

What: Flooding caused by excessive rainfall continues to be possible from multiple lines of showers and thunderstorms, strong at times, moving across the area.
Where: San Francisco County, San Mateo Peninsula, East Bay, South Bay, and Central Coast
When: Through Friday evening.
Impacts: Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Low water crossings may become flooded. Flooding may occur in poor drainage and urban areas.
Additional Details: - Numerous lines of showers and thunderstorms will move across the Bay Area and Central Coast through Friday evening. An additional 1-3" of rain is expected across the interior with locally higher totals between 3-5" across the Santa Cruz Mountains and up to 8" across the Santa Lucia Range. Flooding potential will increase with each successive round of rain. Sharp rises in smaller creeks and streams are expected with at least some potential for minor flooding in mainstream rivers. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

What: Hazardously strong coastal winds and jets will lead to blowing and drifting sand, wind waves up to 20 ft, and result in poor visibility along coastal beaches.
Where: Beaches along the Pacific Coast.
When: Through 4 AM Friday.
Impacts: Dangerous coastal and near coastal conditions. Water rescues may be affected by poor visibility from sea spray and blowing sand. Potential for increased erosion.

Dangerous conditions are forecast along the shoreline. It is recommended to avoid the coast during this time. Never turn your back to the ocean.