Coastal Flood Warning issued December 14 at 3:36AM PST until December 14 at 2:00PM PST by NWS Seattle WA
* WHAT...For the High Surf Advisory, large breaking waves of 18 to 23 feet in the surf zone. For the Coastal Flood Warning, significant coastal flooding expected. Inundation of 2.5 to 3.5 feet above ground level is possible along shorelines and low-lying coastal area. * WHERE...North Coast and Central Coast zones. * WHEN...For the High Surf Advisory, until 4 PM PST this afternoon. For the Coastal Flood Warning, from 8 AM this morning to 2 PM PST this afternoon. * IMPACTS...Significant coastal flooding due to high tides and storm surge is expected. This is expected to lead to numerous road
Coastal Flood Advisory issued December 14 at 3:36AM PST until December 14 at 9:00AM PST by NWS Seattle WA
* WHAT...Minor coastal flooding. Inundation of around 2 feet above ground level is possible along shorelines and low- lying coastal areas. * WHERE...Western Whatcom County and Western Skagit County zones. * WHEN...Until 9 AM PST this morning. * IMPACTS...Minor coastal flooding due to tidal overflow is expected around high tide. This may lead to flooding of parking lots, parks, and roads, with only isolated road closures expected. * ADDITIONAL DETAILS...Highest impacts will occur in the hours near high tide at around 6 AM. Winds and waves may locally exacerbate impacts, particularly along south and southeast- facing shorelines.
Coastal Flood Advisory issued December 13 at 3:39AM PST until December 16 at 1:00PM PST by NWS San Francisco CA
* WHAT...For the Coastal Flood Advisory, minor coastal flooding expected due to King Tides. For the High Surf Advisory, large breaking waves of 18 to 22 feet expected. * WHERE...San Francisco County. * WHEN...For the Coastal Flood Advisory, until 1 PM PST Monday. For the High Surf Advisory, from 10 PM this evening to 7 PM PST Saturday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion.
Coastal Flood Watch issued December 13 at 2:39AM PST until December 14 at 2:00PM PST by NWS Seattle WA
* WHAT...Significant coastal flooding possible. Inundation of 2 to 3 feet above ground level is likely along shorelines and low-lying coastal areas. Large waves of 17 to 19 feet are expected along the coast. * WHERE...North Coast zone. * WHEN...From Saturday morning through Saturday afternoon. * IMPACTS...Numerous roads may be closed. Low-lying property including homes, businesses, and some critical infrastructure may be inundated. Some shoreline erosion may occur. * ADDITIONAL DETAILS...Highest impacts will occur around the 11 AM high tide on Saturday. Forecast confidence is currently moderate in 2 to 3 feet of inundation. However, there is a 10 percent
Coastal Flood Advisory issued December 13 at 2:39AM PST until December 13 at 1:00PM PST by NWS Seattle WA
* WHAT...For the Coastal Flood Advisory, minor coastal flooding with inundation of around 2 feet above ground level is expected. For the Coastal Flood Watch, significant coastal flooding possible. Inundation of 2 to 3 feet above ground level is likely along shorelines and low-lying coastal areas. Large waves of 17 to 19 feet are expected along the coast. * WHERE...Central Coast zone. * WHEN...For the Coastal Flood Advisory, from 7 AM to 1 PM PST Friday. For the Coastal Flood Watch, from Saturday morning through Saturday afternoon. * IMPACTS...Numerous roads may be closed. Low-lying property including homes, businesses, and some
New flood hazard products to support coastal climate adaptation planning in Humboldt County, California
Across the US, coastal communities face increasing threats from flooding, erosion, and rising groundwater tables due to accelerating sea-level rise and changing storm patterns. CoSMoS is a dynamic modeling approach that allows for detailed projections of coastal flooding due to both future sea level rise and storms. It is integrated with long-term coastal evolution (i.e., beach changes and cliff retreat) over large geographic areas (100s of kilometers). CoSMoS models all the relevant physics of a coastal storm (e.g., tides, waves, and storm surge), which are then scaled down to local flood projections for use in community-level coastal planning and decision-making.
Coastal Flood Advisory issued December 12 at 1:43PM PST until December 13 at 11:00AM PST by NWS Eureka CA
* WHAT...For the High Surf Advisory, large breaking waves of up to 23 ft. For the Coastal Flood Advisory, High astronomical tides will cause minor flooding along the Mendocino Coast. Up to one quarter foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 7.6 and 8.0 feet MLLW at the Arena Cove tide gauge is predicted. * WHERE...Mendocino Coast County. * WHEN...For the High Surf Advisory, until 9 PM PST this evening. For the Coastal Flood Advisory, from 7 AM to 11 AM PST Friday. High tide is at 8:18 AM at the Arena
Coastal Flood Warning issued December 12 at 1:43PM PST until December 13 at 11:00AM PST by NWS Eureka CA
* WHAT...For the Coastal Flood Warning, High astronomical tides and large surf will cause moderate flooding in low lying areas along the Redwood Coast. Up to one foot of saltwater inundation above ground level is possible in low lying areas near shorelines and tidal waterways. Between 9.2 and 9.5 feet MLLW at the North Spit tide gauge is predicted. For the High Surf Advisory, large breaking waves of up to 23 ft. * WHERE...Northern Humboldt Coast County. * WHEN...For the Coastal Flood Warning, from 7 AM to 11 AM PST Friday. For the High Surf Advisory, until 9 PM PST
Coastal Flood Advisory issued December 12 at 1:20PM PST until December 16 at 1:00PM PST by NWS San Francisco CA
* WHAT...For the Coastal Flood Advisory, minor coastal flooding expected due to King Tides. For the High Surf Advisory, large breaking waves of 18 to 22 feet expected. * WHERE...For the Coastal Flood Advisory, along the bayshore line. For the High Surf Advisory, northwest to west facing beaches along the Pacific Ocean. * WHEN...For the Coastal Flood Advisory, until 1 PM PST Monday. For the High Surf Advisory, from 1 PM this afternoon to 4 AM PST Friday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous swimming and surfing conditions and localized beach erosion.
Coastal Flood Watch issued December 11 at 12:32PM PST until December 14 at 2:00PM PST by NWS Seattle WA
* WHAT...Significant coastal flooding possible. Inundation of 2 to 3 feet above ground level is likely along shorelines and low- lying coastal areas. Waves of 15-17 feet are expected along the coast. * WHERE...North Coast and Central Coast zones. * WHEN...Highest impacts will occur within 2 hours of the 11 AM high tide on Saturday. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure may be inundated or damaged. Some shoreline erosion may occur. * ADDITIONAL DETAILS...Forecast confidence is currently moderate in 2 to 3 feet of inundation. However, there is a 10