Britons have been told to brace for an impending “weather bomb” as 80mph winds are set to whip parts of the country. Forecasters at the Met Office have already issued three days of yellow wind warnings across Scotland and Northern Ireland on Friday, Sunday and Monday – with the latter warning extending to parts of England and Wales, too. Tomorrow, residents of the Scottish islands, including Harris and Skye, are advised to hunker down as “strong winds and high spring tides” threaten public transport, coastal roads and some power from 7am to 3pm. Then, from 3am on Sunday to midday on Monday, th…