NORTHERN COASTAL HUMBOLDT — * WHAT...For the High Surf Warning, Dangerously large breaking waves 30 to 35 feet. For the Coastal Flood Advisory, High astronomical tides will cause minor flooding in low lying areas around Humboldt Bay. 1.5 to 2.2 feet of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 8.7 and 8.9 feet MLLW at the North Spit tide gauge is predicted.
* WHERE...Northern Coastal Humboldt County.
* WHEN...For the High Surf Warning, from 1 PM Friday to 4 AM PST Sunday. For the Coastal Flood Advisory, from 11 AM to 3 PM PST Friday. High tide is at 1:04pm at the Humboldt Bay North Spit tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide.
* IMPACTS...Flooding of low lying areas around Humboldt Bay including parks and roads with only isolated closures expected. Flooding will likely impact Jackson Ranch Road in the Arcata Bottoms and several roads in King Salmon. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life- threatening surf conditions and significant beach erosion can be expected.
* ADDITIONAL DETAILS...While astronomical tides are decreasing each day, persistent southerly winds are aiding in raising water levels for Humboldt Bay. The beginning of a very large incoming swell could enhance coastal flooding if they overlap, but they aren't anticipated to do so or will not overlap for long. After only brief improvement in high swell late Saturday through Sunday, a second large swell is forecast late Sunday through Monday.
Local conditions in Northern Coastal Humboldt may affect travel, public safety, or daily routines. Stay informed and adjust plans if conditions change.
This report is based on information from NWS, monitored by Alert USA's verified emergency feed.
Residents should be prepared for possible effects on travel, public safety, and daily routines while the situation remains active.
Recommended steps: stay informed via official sources; avoid non-essential travel in the area; secure outdoor items if weather is involved; check on family and neighbors.
Alert USA is tracking this developing situation and will update this report as verified information becomes available.
Verified by Alert USA • NWS