In effect from Thursday, Jan 01 2026 7:00 AM - Thursday, Jan 01 2026 11:00 AM
Issued by NWS Eureka CA
What:
For the Coastal Flood Warning, High astronomical tides
and large surf will cause moderate flooding in low lying areas
around Humboldt Bay Coast. Up to one foot of saltwater
inundation above ground level is possible in low lying areas
near shorelines and tidal waterways. Between 9.3 and 9. 6 feet
MLLW at the north spit tide gauge is predicted. For the Coastal
Flood Watch, High astronomical tides may cause moderate to
locally major flooding in low lying areas along the Redwood and
Mendocino Coast. Up to 1.5 foot of saltwater inundation above
ground level is possible in low lying areas near shorelines and
tidal waterways. Tides may exceed the highest astronomical tide
on record at the North Spit tide gauge during the morning high
tides on Friday and Saturday.
Where:
Northern Humboldt Coast County.
When:
For the Coastal Flood Warning, from 7 AM to 11 AM PST
Thursday. For the Coastal Flood Watch, from Thursday morning
through Saturday afternoon. High tide is at 8:08 am at the
Humboldt Bay North Spit tide gauge. Saltwater inundation will
be possible 1 to 2 hours before and after high tide.
Impacts:
Several coastal roads may be closed. Low lying
property and some critical infrastructure will be inundated.
These impacts will include, but not limited to, roadways in
King Salmon and the Arcata bottoms. Shoreline erosion will
occur.
Instructions: A Coastal Flood Warning means that flooding is occurring or
imminent. Coastal residents in the warned area should be alert
for rising water and take appropriate action to protect life and
property.
Feet Above Ground is locally defined as feet above the Highest
Astronomical Tide or HAT.
