What is a weather bomb and how often do they affect the UK?

A weather bomb, a rapidly deepening storm, hit the UK on 8 Jan 2026, sparking a rare red warning for Cornwall, Isles of Scilly and Jersey.

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What is a weather bomb and how often do they affect the UK?

Storm Goretti, the first named storm of 2026, struck the UK on 8 January 2026 and triggered a rare red weather warning for Cornwall, the Isles of Scilly and Jersey. The Met Office warned of a weather bomb – a storm that deepens by at least 24 mb in 24 h – and said Goretti could drop close to 40 mb between midnight Thursday and midnight Friday. Emergency alerts were sent at about 3 pm and 5 pm. Sky News weather producer Jo Robinson explained the physics, while climate scientist Daniel Swain noted that bomb cyclones can surprise people. Past UK bombs include 2014 Outer Hebrides waves of 52 ft and 2017 Storm Doris gusts of 94 mph.

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weather bombStorm GorettiUK weather warningMet Officeexplosive cyclogenesis