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Updated:November 7, 2025 6:31 am PST

Coastal Flood Advisory COASTAL FLOOD ADVISORY  
Humboldt County

  Effective: Thu, 11/6 9:48pm Severity: Minor
  Updated: November 7, 2025 6:31 am Urgency: Expected
  Expires: Fri, 11/7 1:00pm Certainty: Likely

Areas Affected: Northern Humboldt Coast
 
Alert Details:
* WHAT...High astronomical tides will cause minor flooding in low
lying areas around Humboldt Bay. Up to one quarter foot of
saltwater inundation above ground level is possible near
shorelines and tidal waterways. Between 8.8 and 9.1 feet MLLW
at the North Spit tide gauge is predicted.

* WHERE...Northern Humboldt Coast County.

* WHEN...From 11 AM to 1 PM PST Friday. High tide is at 12:01 PM
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.

Information:
A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.

Feet Above Ground is locally defined as feet above the Highest
Astronomical Tide or HAT.