Locations to be affected: Reefs and exposed northern and north-facing coastlines with relatively shallow, gently to moderately sloping, nearshore areas.
Synopsis: Moderate long-period swells are reaching the area again and causing hazardous conditions along mainly northern and north-facing coastlines. The threat level to the life, livelihood, property and infrastructure of those using the affected coastlines is to rise to moderate with the potential for significant impacts. These swells could cause life threatening surfs and rip currents on affected coastlines. A high surf advisory means that dangerous surfs of 6 to 10 feet will affect some coastlines in the advisory area, producing hazardous conditions.
Seas (significant wave heights): 6 to 10 feet, occasionally or locally reaching near 15 feet. Swell period: 9 to 13 seconds.
Swells: Northerly at 5 to 8 feet and occasionally higher. Highest seas are expected tonight to Monday when warnings are likely for most places.
Surfs (breaking swells): Over 6 feet. These conditions are conducive to dangerous rip currents. Please note that surfs could be as much as twice the height of swells, depending on the bathymetry of the nearshore areas.
Coastal flooding: High tides combined with onshore wind and swell actions could result in localised coastal flooding and beach erosion.
