Storm Ciara was a powerful and long-lived extratropical cyclone that was the first of a pair of European windstorms to affect the United Kingdom and Ireland at peak intensity less than a week apart in early February 2020, followed by Storm Dennis a week later. Ciara caused widespread wind and flooding damage across Europe, and at least 13 fatalities.
The system emerged into the North Atlantic and underwent Explosive Cyclogenesis; the first severe weather warnings were issued for the United Kingdom and Ireland on 4 February well in advance of the storm's arrival. It was officially named Ciara by the Met Office the following day, becoming the twelfth named storm of the 2019–20 European windstorm season. Ciara subsequently made landfall in northern Scotland on 9 February and Norway the next day.
Precursor low Kade brought heavy snowfall to the northern United States and eastern Canada, especially Newfoundland, New England and New York; further south in the Mid-Atlantic and Southeastern U.S., flooding and tornadoes were reported.