High Surf Advisory issued December 25 at 9:47AM PST until December 29 at 4:00PM PST by NWS San Francisco CA
* WHAT...Large breaking waves of 20 to 30 feet. * WHERE...Pacific Coast. * WHEN...From 10 AM Thursday to 4 PM PST Sunday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion can be expected. 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.
Flood Advisory issued December 25 at 7:08AM PST until December 25 at 12:00PM PST by NWS San Francisco CA
* WHAT...Urban area and small stream flooding caused by excessive rainfall continue for the Mark West Creek Area. * WHERE...A portion of northern California, including the following county, central Sonoma. * WHEN...Until noon PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. River or stream flows are elevated. * ADDITIONAL DETAILS... - At 705 AM PST, Gauge reports indicated heavy rain. This is causing urban and small stream flooding. Between 0.5 and 1 inch of rain has fallen. - Green Valley Creek is the most likely place to experience minor flooding. Flooding impacts will continue, but no additional rainfall
Flood Advisory issued December 24 at 7:21PM PST until December 25 at 1:30AM 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 130 AM PST Wednesday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. River or stream flows are elevated. * ADDITIONAL DETAILS... - At 719 PM PST, river gauge reports remain elevated. Between 0.5 and 1 inch of rain has fallen. - Green Valley Creek is the most likely place to experience minor flooding. Flooding impacts will continue, but no additional rainfall is expected. - Some locations that will experience flooding include... Santa Rosa
Small Craft Advisory issued December 24 at 8:34AM PST until December 25 at 9:00PM PST by NWS San Francisco CA
* WHAT...Northwest winds 10 to 20 kt and seas 12 to 17 ft. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...Until 9 PM PST Wednesday. * IMPACTS...Conditions will be hazardous to small craft.
Small Craft Advisory issued December 24 at 8:34AM PST until December 25 at 3:00PM PST by NWS San Francisco CA
* WHAT...Northwest winds 10 to 20 kt and seas 10 to 15 ft. * WHERE...Coastal Waters from Point Arena to Point Reyes California out to 10 NM. * WHEN...Until 3 PM PST Wednesday. * IMPACTS...Conditions will be hazardous to small craft.
High Surf Warning issued December 23 at 2:00AM PST until December 24 at 12:00PM PST by NWS San Francisco CA
* WHAT...For the Coastal Flood Warning, significant coastal flooding expected. For the High Surf Warning, dangerously large breaking waves of 30 to 35 feet, including breakers up to 40 feet at favored spots such as Mavericks. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay, Southern Monterey Bay and the Big Sur Coast. * WHEN...Until noon PST Tuesday. * IMPACTS...Life-threatening swimming and surfing conditions and significant shoreline erosion can be expected. Numerous roads may be closed, and some critical infrastructure will be inundated. Large waves can sweep across the beach without
Coastal Flood Warning issued December 23 at 2:00AM PST until December 24 at 12:00PM PST by NWS San Francisco CA
* WHAT...For the Coastal Flood Warning, significant coastal flooding expected. For the High Surf Warning, dangerously large breaking waves of 30 to 35 feet, including breakers up to 40 feet at favored spots such as Mavericks. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay, Southern Monterey Bay and the Big Sur Coast. * WHEN...Until noon PST Tuesday. * IMPACTS...Life-threatening swimming and surfing conditions and significant shoreline erosion can be expected. Numerous roads may be closed, and some critical infrastructure will be inundated. Large waves can sweep across the beach without
Special Weather Statement issued December 22 at 6:16PM PST by NWS San Francisco CA
At 616 PM PST, Doppler radar was tracking a strong thunderstorm near Dillon Beach, or 17 miles west of Petaluma, moving east at 35 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Santa Rosa, Petaluma, San Rafael, Novato, Rohnert Park, Mill Valley, San Anselmo, Larkspur, Corte Madera, Fairfax, Cotati, San Geronimo, Point Reyes Station, Stinson Beach, Tomales, Kentfield, Lucas Valley-Marinwood, Tamalpais-Homestead, Tamalpais-Homestead Valley, and Dillon Beach.
Coastal Flood Warning issued December 22 at 6:15PM PST until December 24 at 12:00PM PST by NWS San Francisco CA
* WHAT...For the Coastal Flood Warning, significant coastal flooding expected. For the High Surf Warning, dangerously large breaking waves of 30 to 35 feet, including breakers up to 40 feet at favored spots such as Mavericks. * 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...Until noon PST Tuesday. * IMPACTS...Life-threatening swimming and surfing conditions and significant shoreline erosion can be expected. Numerous roads may be closed, and some critical infrastructure will be inundated. Large waves can sweep across the beach
High Surf Warning issued December 22 at 6:15PM PST until December 24 at 12:00PM PST by NWS San Francisco CA
* WHAT...For the Coastal Flood Warning, significant coastal flooding expected. For the High Surf Warning, dangerously large breaking waves of 30 to 35 feet, including breakers up to 40 feet at favored spots such as Mavericks. * 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...Until noon PST Tuesday. * IMPACTS...Life-threatening swimming and surfing conditions and significant shoreline erosion can be expected. Numerous roads may be closed, and some critical infrastructure will be inundated. Large waves can sweep across the beach