Beach Hazards Statement issued December 18 at 5:39AM PST until December 19 at 6:00PM PST by NWS San Francisco CA
* WHAT...A moderate to long period west to northwest swell will result in an increasing risk of sneaker waves and rip currents. Sneaker waves are likely to break between 10 to 13 feet. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Sneaker 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
Dense Fog Advisory issued December 16 at 10:46PM PST until December 17 at 9:00AM PST by NWS San Francisco CA
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...The North Bay, San Francisco and San Francisco Bay Shoreline, Monterey Bay and the Big Sur Coast, The Santa Cruz Mountains, The Santa Clara Valley, East Bay Interior Valleys, and Northern Salinas Valley/Hollister Valley and Carmel Valley. * WHEN...Until 9 AM PST Tuesday. * IMPACTS...Limited visibility will result in hazardous driving conditions.
Flood Advisory issued December 16 at 2:39PM PST until December 17 at 10:30AM PST by NWS San Francisco CA
* WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of northern California, including the following county, central Sonoma. * WHEN...Until 1030 AM PST Tuesday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and creeks. Some low-water crossings may become impassable. * ADDITIONAL DETAILS... - At 234 PM PST, Doppler radar and automated rain gauges indicated heavy rain. This will cause urban and small stream flooding. Overflowing poor drainage areas will cause minor flooding in the advisory area. - Some locations that will experience flooding include... Santa Rosa, Rohnert
Coastal Flood Advisory issued December 15 at 2:27PM PST until December 16 at 1:00PM PST by NWS San Francisco CA
* WHAT...Minor coastal flooding expected due to King Tides. * WHERE...Bayshore along the San Francisco Bay and San Pablo Bay. * WHEN...Until 1 PM PST Monday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...Low lying areas within the San Francisco Bay Area may see minor flooding as a result during high tide. San Francisco high tide is 6.82 ft at 11:08 am Monday.
Flood Advisory issued December 15 at 1:13AM PST until December 15 at 12:00PM PST by NWS San Francisco CA
* WHAT...Urban area and small stream flooding caused by excessive rainfall continues. * WHERE...A portion of northern California, including the following county, central Sonoma. * WHEN...Until noon PST Sunday. * IMPACTS...Water over roadways. River or stream flows are elevated. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 110 AM PST, gauge reports indicated recent heavy rain. This is causing urban and small stream flooding. Minor flooding is occurring on Green Valley Creek at Martinelli Road, Mark West Creek near Mirabel Heights, and Colgan Creek near Sebastopol. - Flooding impacts will
Coastal Flood Advisory issued December 15 at 4:37AM PST until December 16 at 1:00PM PST by NWS San Francisco CA
* WHAT...Minor coastal flooding expected due to King Tides. * WHERE...Low-lying areas along the Pacific Ocean and San Francisco Bay shoreline. * WHEN...Until 1 PM PST Monday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...Tidal levels are increasing as a result of higher astronomical tides. Low lying areas within the San Francisco Bay Area may see minor flooding as a result during high tide. San Francisco highest tides are 7.02 ft at 10:22 am Sunday, and 6.82 ft at 11:08 am Monday.
Flood Advisory issued December 14 at 3:26AM PST until December 14 at 5:45AM PST by NWS San Francisco CA
* WHAT...Small stream flooding caused by excessive rainfall continues. * WHERE...Portions of central Sonoma County. * WHEN...Until 545 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. River or stream flows are elevated with several small creeks and streams reporting minor flooding. * ADDITIONAL DETAILS... - At 324 AM PST, River gauge reports indicate earlier heavy rainfall has lead to steep rises in smaller creeks and streams across the North Bay. Gauge reports show minor to moderate flooding occuring at Green Valley Creek at Martinelli Road, Santa Rosa Creek at Willowside Road, and Colgan Creek near Sebastopol. Up
Gale Warning issued December 13 at 3:28AM PST until December 14 at 3:00AM PST by NWS San Francisco CA
* WHAT...For the Small Craft Advisory, south winds 15 to 25 kt with gusts up to 35 kt and seas 10 to 14 ft. For the Gale Warning, south winds 25 to 35 kt with gusts up to 47 kt and seas 10 to 15 ft expected. For the Storm Warning, southwest winds 25 to 35 kt with gusts up to 55 kt and seas 14 to 16 ft expected. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...For the Small Craft Advisory, until 3 PM PST this afternoon. For the Gale Warning, from 3 PM this
Gale Warning issued December 13 at 3:28AM PST until December 14 at 10:00AM PST by NWS San Francisco CA
* WHAT...For the Small Craft Advisory, southeast winds 10 to 20 kt with gusts up to 35 kt and choppy waters expected. For the Gale Warning, south winds 20 to 30 kt with gusts up to 45 kt and very rough waters expected. * WHERE...San Francisco Bay South of the Bay Bridge. * WHEN...For the Small Craft Advisory, from 3 PM this afternoon to 9 PM PST this evening. For the Gale Warning, from 9 PM this evening to 10 AM PST Saturday. * IMPACTS...Conditions will be hazardous to small craft.
Gale Warning issued December 13 at 3:28AM PST until December 14 at 9:00AM PST by NWS San Francisco CA
* WHAT...For the Small Craft Advisory, south winds 10 to 20 kt with gusts up to 35 kt and seas 12 to 17 ft. For the Gale Warning, south winds 20 to 30 kt with gusts up to 40 kt and seas 12 to 17 ft expected. * WHERE...Waters from Pigeon Point to Point Pinos 10-60 NM. * WHEN...For the Small Craft Advisory, until 9 PM PST Friday. For the Gale Warning, from 9 PM Friday to 9 AM PST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.