At its worst Storm Atiyah will whip up monster swells over 42ft tall, a weather forecast has shown.
An updated forecast from Magic Seaweed now shows waves reaching a peak on Sunday afternoon and evening just off the coast of Kerry.
The grey and black areas on the below map show the highest swells of at least 42ft at around 6pm today.
Kerry is subject to a Status Red warning from Met Eireann today.
The caution - the strongest that can be issued by weather forecasters - warns of high speed winds, high seas and possible coastal flooding.
The red warning is in place for the county from 4pm to 7pm today.
The full message reads: "West to southwest winds veering northwest will reach mean speeds in excess of 80km/h with gusts in excess of 130km/h for a time this evening.
"Extreme caution is advised, especially near the coast and on high ground.
"Due to a combination of high seas and storm surge there is a possibility of coastal flooding."
Several other warnings remain in place, including an orange warning for nine counties.
