INSTRUCTIONS

A Coastal Flood Watch means that flooding is possible but not imminent. Coastal residents in the watch area should begin preparations 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.

DESCRIPTION

* What…For the Coastal Flood Advisory, High astronomical tides will cause minor to moderate flooding in low lying areas around Humboldt Bay and along the coast. Up to one foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 9.0 and 9.3 feet MLLW at the North Spit tide gauge is predicted.

* What…For the Coastal Flood Watch, high astronomical tides and large surf may 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 9.0 and 9.5 feet MLLW at the North Spit tide gauge is predicted.

* WHERE…Northern Humboldt Coast. This includes King Salmon, the Arcata Bottoms and areas right on the waterfront in Eureka. This may also impact Centerville Beach road.

* WHEN…For the Coastal Flood Advisory, from 9 AM to noon PST Wednesday. For the Coastal Flood Watch, from Thursday morning through Thursday afternoon. High tide is at 10:37 AM at the Humboldt Bay North Spit tide gauge Wednesday and at 11:17 AM on Thursday. 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. Some shoreline erosion may occur.