Friday's races at have been scrapped after fears over dangerous winds of 90mph caused by Storm Eowyn.
There were plans for both horse and greyhound at Dundalk Stadium but the has now issued a red warning - indicating there is a threat to life - with flying debris possible.
Millions have been urged to stay indoors in Ireland and Scotland, with all schools in Northern Ireland advised to shut their doors, meaning the conditions are not safe for racing.
A statement from Dundalk Stadium read: "Due to the red storm warning in place for tomorrow. The horse meeting and greyhound meeting scheduled for tomorrow 24th January 2025 are now cancelled. The Stadium will be closed all day tomorrow. Keep safe."
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A Met Office spokesman said: "An extremely windy spell with disruption and potentially damaging winds tomorrow morning.
"A spell of very strong winds is likely, initially southeasterly before turning westerly, with peak gusts of 50-60 mph inland, 60-70 mph around some coasts and hills," the forecaster added. Perhaps up to 80 mph in exposed parts of western ."
The worst of the weather should not affect races at Cheltenham on Friday. The region only has a yellow warning, meaning conditions should be more settled when the meeting gets underway.
The racecourse's clerk Jon Pullin said: "The ground is currently soft, good to soft in places. We’re having a little shower or two at the moment, which was forecast, we could get two or three millimetres and then it dries up for the afternoon.
"The storm builds and moves in through the night, and overnight we see wind speeds increase with gusts of 45 to 50 miles an hour. The odd forecast has got in excess of 50 miles an hour, so we’re certainly expecting a pretty windy night and some heavier spells of rain to come with that.
"Some forecasts have a below double-digit rainfall and some have a little bit more, eight to 15 millimetres through the night and into the morning.
"Conditions are highly likely to ease from where we are currently. The rain then dies out by tomorrow morning and the winds continue to a lesser degree throughout the early afternoon. By the late afternoon everything has calmed down and the forecast looks very settled for Saturday itself."
