Katia skimmed by Atlantic Canada over the weekend and although it had already transitioned into a post-tropical storm, strong winds and high waves impacted the coast of Nova Scotia and Newfoundland.
The remnants of the storm began affecting Ireland Monday, shutting down roads, bridges and sporting events. Thousands of residents were also left without power as a result of the stormy conditions.
Gale warnings remain in place for parts of the UK, with the strongest winds expected to hit northern Ireland, southern Scotland and parts of of northern England. Forecasters say there is also the threat for localized flooding along the western seaboard.
Huge waves that hit many coastal areas have disrupted flights and ferry sailings. Fishing boats along the coasts of Ireland and Scotland were warned to head into port as a precaution as well.
Britain's weather agency warns that the tail end of former Hurricane Katia could possibly bring the worst storms in 15 years. In 1996, the aftermath of Hurricane Lili brought winds of 145 km/h and killed five people in its wake. The cost of damage was an estimated $250 million.