Event: High Surf Warning

Message Type: Update

Urgency: Expected

Severity: Moderate

Certainty: Likely

Wheather Alert Summary: ...High surf warning in effect until noon hst monday for north and west facing shores of niihau kauai oahu and molokai and north facing shores of maui... ...High surf warning in effect from 6 pm this evening to noon hst monday for west facing shores of the big island of hawaii... .An extra large long-period northwest (300-320 degree) swell will build and peak later tonight into sunday morning. surf heights will slowly decline from sunday to monday, finally falling below advisory levels by early tuesday morning. * what...Dangerously large breaking waves building to 15 to 20 feet along exposed west facing shores of the big island of hawaii. * where...Exposed west facing shores of the big island of hawaii. * when...From 6 pm this evening to noon hst monday. * impacts...Very high...Expect ocean water surging and sweeping across beaches, coastal benches, and lava flows creating the potential for impacts to coastal properties and infrastructure, including roadways. powerful longshore and rip currents will be present at most beaches. large breaking waves and strong currents may impact harbor entrances and channels causing challenging boat handling.

Event: High Surf Warning

Message Type: Update

Urgency: Expected

Severity: Moderate

Certainty: Likely

Wheather Alert Summary: ...High surf warning in effect until noon hst monday for north and west facing shores of niihau kauai oahu and molokai and north facing shores of maui... ...High surf warning in effect from 6 pm this evening to noon hst monday for west facing shores of the big island of hawaii... .An extra large long-period northwest (300-320 degree) swell will build and peak later tonight into sunday morning. surf heights will slowly decline from sunday to monday, finally falling below advisory levels by early tuesday morning. * what...Dangerously large breaking waves of 35 to 45 feet along north facing shores of niihau, kauai, oahu, molokai, and maui. surf up to 20 to 30 feet along west facing shores of niihau, kauai, oahu, and molokai. * where...North and west facing shores of niihau, kauai, oahu, and molokai, and north facing shores of maui. * when...Until noon hst monday. * impacts...Very high...Expect ocean water surging and sweeping across beaches, coastal benches, and lava flows creating the potential for impacts to coastal properties and infrastructure, including roadways. powerful longshore and rip currents will be present at most beaches. large breaking waves and strong currents may impact harbor entrances and channels causing challenging boat handling.