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.

DESCRIPTION

* WHAT…For the Coastal Flood Warning, High astronomical tides and large surf will cause major flooding in low lying areas along the North Coast. Up to 1.5 foot of saltwater inundation above ground level is possible in low lying areas near shorelines and tidal waterways. Between 8.6 and 8.9 feet MLLW at the Arena Cove gauge is predicted. Between 9.5 and 9.7 feet MLLW at the Crescent City tide gauge is predicted. For the Coastal Flood Watch, High astronomical tides and large surf may cause moderate to 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.

* WHERE…Coastal Del Norte, Southwestern Humboldt and Mendocino Coast Counties.

* WHEN…For the Coastal Flood Warning, from 9 AM to 1 PM PST Saturday. High tide is at 9:51 AM at the Arena Cove tide gauge. High tide is at 10:34 AM at the Cescent City tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. For the Coastal Flood Watch, from Sunday morning through Sunday afternoon.

* 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, impacts on sections of highway 1/101. Shoreline erosion will occur.