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Updated:June 17, 2026 2:00 am PDT

Coastal Flood Advisory COASTAL FLOOD ADVISORY  
Humboldt County

  Effective: Tue, 6/16 11:19pm Severity: Minor
  Updated: June 17, 2026 2:00 am Urgency: Expected
  Expires: Wed, 6/17 3:00am Certainty: Likely

Areas Affected: Northern Coastal Humboldt
 
Alert Details:
* WHAT...High astronomical tides will cause minor flooding in low
lying areas around Humboldt Bay. Up to 0.5 foot of saltwater
inundation above ground level is possible near shorelines and
tidal waterways. Between 9.0 and 9.2 feet MLLW at the North Spit
tide gauge is predicted.

* WHERE...Northern Coastal Humboldt County.

* WHEN...From 11 PM this evening to 3 AM PDT Wednesday. High
tide is at 1:40 AM 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.