South Bay
- Beach Hazards Statement
* WHAT...A moderate period northwest swell will result in a more energetic surf zone and an increased risk of sneaker waves and rip currents. Breaking waves of 10 to 13 ft are expected with some potential for breaking waves up to 15 ft to develop. * WHERE...Northern Monterey Bay County. * WHEN...Through late Thursday night. * IMPACTS...Dangerous swimming and surfing conditions. Large waves can sweep across the beach without warning, pulling people into the sea from rocks, jetties, and beaches. Sudden immersion in cold water can result in cold water shock even for the most experienced swimmers. Cold water shock can result in dramatic changes in breathing, heart rate and blood pressure, greatly increasing the risk of drowning in rough open waters.More
- High Surf Advisory
* WHAT...Large breaking waves between 14 to 19 ft along southwest facing beaches and between 19 to 22 ft along well exposed west facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...Until 6 AM PST Friday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Large waves can sweep across the beach without warning, pulling people into the sea from rocks, jetties and beaches. Sudden immersion in cold water can result in cold water shock even for the most experienced swimmers. Cold water shock can result in dramatic changes in breathing, heart rate and blood pressure, greatly increasing the risk of drowning in rough open waters.More
- Flood Advisory
* WHAT...Urban area and small stream flooding caused by excessive rainfall continues. * WHERE...Most of Marin County and southern Sonoma County, including the cities of San Rafael and Petaluma. * WHEN...Until 330 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 112 AM PST, Doppler radar and automated rain gauges indicated heavy rain. This will cause urban and small stream flooding. Between 2 and 5 inches of rain have fallen. - Additional rainfall amounts of 2 to 5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Petaluma, San Rafael, Novato, Mill Valley, San Anselmo, Larkspur, Corte Madera, Fairfax, Cotati, Point Reyes Station, San Geronimo, Tomales, Lucas Valley-Marinwood, Dillon Beach, Black Point-Green Point, Kentfield, Ross, Inverness, Lagunitas-Forest Knolls and Woodacre. - http://www.weather.gov/safety/floodMore
- Flood Advisory
* WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...Southern Napa County including the city of Napa. * WHEN...Until 515 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Water over roadways. * ADDITIONAL DETAILS... - At 1118 PM PST, Doppler radar and automated rain gauges indicated heavy rain. This will cause urban and small stream flooding. Between 2 and 4 inches of rain have fallen. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Napa and American Canyon. - http://www.weather.gov/safety/floodMore
- Flood Advisory
* WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...Northwestern Alameda County north of downtown Oakland, western Contra Costa County and southern Marin County. * WHEN...Until 515 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Water over roadways. * ADDITIONAL DETAILS... - At 1115 PM PST, Doppler radar and automated rain gauges indicated heavy rain. This will cause urban and small stream flooding. Up to 1 inch of rain has fallen. - Several flooding reports are already coming in from Contra Costa County. Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Concord, Berkeley, Richmond, Mountain View, Walnut Creek, Martinez, Pleasant Hill, San Pablo, Lafayette, El Cerrito, Hercules, Albany, Pinole, Orinda, Moraga, Mill Valley, Larkspur, Piedmont and Emeryville. - http://www.weather.gov/safety/floodMore
- Flood Watch
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...The North Bay. * WHEN...Through late Friday night. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - Light to moderate rain is continuing across the watch area. Two to four inches of rain have already fallen in the valley regions with up to six inches of rain in the higher elevations. Areas of the Sonoma County valleys have already reported minor flooding and road closures. - http://www.weather.gov/safety/floodMore
- Wind Advisory
* WHAT...South winds 20 to 30 mph with gusts up to 50 mph. * WHERE...San Francisco, Marin Coastal Range, Sonoma Coastal Range, North Bay Interior Mountains, North Bay Interior Valleys, San Francisco Bay Shoreline, San Francisco Peninsula Coast * WHEN...Until 6 AM PST Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.More
