Storm Barra was a hurricane-force extratropical bomb cyclone in the North Atlantic Ocean that impacted Ireland and the United Kingdom with damaging gusts and heavy rainfall.

As it entered the North Sea, it further degraded and was absorbed by the frontal system of "Justus", an extratropical cyclone named by the Free University of Berlin (FUB).

[4] On the same day, Met Éireann named this developing system "Barra", as it was forecasted to bring strong gusts to Ireland.

[5] The storm began to move northwestwards, and started to rapidly intensify whilst nearing Ireland, with its pressure falling to 965 hPa (28.5 inHg) according to a weather map by the FUB on 6 December.

[7] The United States Ocean Prediction Center analysed an even lower pressure of 956 hPa (28.2 inHg) on the system.

[9] On 8 December, Barra rapidly weakened as it entered the North Sea before merging with the frontal system of an extratropical cyclone, in which the FUB named as "Justus".

[12][13] Barra is seen to impact Ireland and the United Kingdom, after Storm Arwen caused widespread power disruptions to the said countries.

[15] All schools, colleges, universities and childcare facilities,[16] COVID-19 vaccination and testing centres, and bus operations in red or orange weather alert areas were suspended in parts of the country,[17] along with Met Éireann issuing red warnings to counties Cork, Clare and Kerry.

Winds up to 140 km/h (39 m/s) were forecasted to impact the area, with authorities there warning people across Ireland to stay in their homes for their own safety.

[27] As Barra made landfall by 7 December, a wind gust of 115 km/h (32 m/s) was registered at Sherkin Island, according to Met Éireann.

[37] A two-vehicle incident due to bad weather induced by Barra killed a person and injured two more on 7 December in the afternoon.

[43][44] A yellow weather alert was placed for Northern Ireland due to Barra as a result of the strong gusts being foreseen to impact the county.

[53] 80 year-old Venetia Smith drowned on 7 December in the River Stour in Dorset after falling off a road bridge during the storm.

[56] In France, the cold front associated with the storm gave heavy rains in the Landes, causing a pile-up on the Autoroute A63, disrupting rail traffic and flooding some roads on 8 December.

[57] The system also left large amounts of rain or snow in the Pyrenees and Eastern France, depending on the altitude.

The Vice President of Navarre, Javier Remírez also noted that the province is under a "very critical and very extraordinary situation" due to the event.

[63] Deba River in Basque Country also broke its banks, affecting a hospital in a town while flooding warnings were issued in Aragon and Cantabria.

[64][61] According to Agencia Estatal de Meteorología (AEMET), on 8 December, the San Sebastian Airport in Gipuzkoa reported a wind gust of 143 km/h (40 m/s).