Tony Benn said of her that politicians were divided between weather vanes and signposts and that Margaret Thatcher was a signpost and he respected that.
From this bunker, the nation's finest weathermen are commanding a squadron of maritime buoys, weather vanes, and far-flung anemometers a whirling device that measures wind speed to collect millions of "observations" about the weather and send them back to a super computer, where they are crunched into a forecast.