Related Clues:

• Is pub after zero pressure consistent here?
• Displayed by weatherman in his other map
• I fly around British feature on map
• Mother is composing a line to the weatherman
• Is nothing but a pressure line
• Boris, a mad feature on the map
• Ideology about alternative line seen in forecast
• Mother is confused by line on a map
• Line joining places of equal barometric pressure
• Forepart - audacity
• Line on weather map
• Line on a map connecting points of equal atmospheric pressure
• Pressure line on map
• Forward part - weather feature
• Line joining places of equal temperature