The following day, the storm was formally named Ciara by the Met Office. For 9 February, an amber wind warning for much of England was issued, with the rest of the United Kingdom remaining under a yellow wind warning. The agency forecasted wind gusts of across the country, with the possibility of gusts up to along coastal regions. On Sunday 9 February, heavy rainfall from Ciara caused severe disruption across the British Isles. As a result, the Environment Agency issued 186 flood alerts, 251 flood warnings and 1 severe flood warning in England. The severe warning, which was later withdrawn, was issued for the River Nidd at Pateley Bridge where a water level of was expected to pose a "danger to life" and overtop flood defences. In the United Kingdom as a whole, around 539,000 people were also left without power due to the storm. The strongest gust recorded was at The Needles on the Isle of Wight. The highest rain total was at Honister Pass in Cumbria, where the Environment Agency recorded of rain over the weekend. High winds created by Storm Ciara over the United Kingdom and the North Atlantic meant that a British Airways Boeing 747-400 broke the record for the fastest subsonic flight between John F. Kennedy International Airport in New York City and London Heathrow. The aircraft was propelled by a strong tailwind and the jet stream across the Atlantic, completing the journey in 4 hours and 56 minutes. During the flight, the aircraft hit a maximum ground speed of and arrived 78 minutes ahead of schedule. Alongside two Virgin Atlantic flights which arrived around the same time, it surpassed the previous world record of 5 hours and 13 minutes, set by a Norwegian flight in January 2018. On 10 February, a 58-year-old man from Micheldever, Hampshire, died after a tree fell on his car during the storm, where wind speeds were estimated to be in excess of . The following day, a 77-year-old man from Clydebank, West Dumbartonshire, in Scotland, was killed after falling on ice and hitting his head. A man also died in Woolton, Liverpool, due to a tree branch falling in high winds. On 11 February, a major incident was declared in Cumbria due to problems with water supply following the storm. A section of the water main was damaged according to United Utilities, who had detected higher than normal levels of chlorine in the water. Twenty water tankers were placed on stand-by on bridges across the M6.