Storm Emma hit Irish retailers for tens of millions of euros as the snow and winds kept customers away from the shops, figures indicate.
Some in the retail sector suffered 30% losses during the week of extreme weather at the end of February and start of March, according to a new report from Retail Ireland.
The group said after a strong start to 2018, retailers have struggled to make up for the losses inflicted by Emma.
Retail Ireland director Thomas Burke said: "Our members enjoyed a strong start to 2018 with a buoyant economy and growing consumer disposable income fuelling strong sales.
"However, the benefit of that increase was largely wiped away during the last week of February, as Storm Emma caused widespread disruption and closures over four key trading days and longer-term supply chain and consumer disruption which ran into a full week. Members reported falls of over 30%."