Shipping Forecast in Rockall, Malin, Hebrides, Bailey, and Fair Isle"). This sometimes follows the opposite format (e.g., "There are warnings of gales in all areas except Biscay, Trafalgar and FitzRoy"). The "General Synopsis" follows, giving the position, pressure (in millibars) and track of pressure areas (e.g., "Low, Rockall, 987, deepening rapidly, expected Fair Isle 964 by 0700 tomorrow"). Each area's forecast is then read out. Several areas may be combined into a single forecast where the conditions are expected to be similar. Wind direction is given first, then strength (on the Beaufort scale), followed by precipitation, if any, and (usually) lastly visibility.
Shipping Forecast warning the Met Office will indicate when it expects the gale to occur. "Imminent" means that a gale is expected within 6 hours, "expected soon" that a gale is expected within 6 to 12 hours and "later" in more than 12 hours' time. The Shipping Forecast is broadcast on BBC Radio 4 because its longwave signal can be received clearly at sea all around the British Isles regardless of time of day or radio conditions. For the same reason, the Shipping Forecast was broadcast in the BBC National Programme until September 1939, and then after the Second World War on