Related Clues:

• Lines on map indicating atmospheric pressure
• Forecaster's lines
• Met lines of equal pressure
• One zooms around black lines on maps
• 15 is strong when they are close
• Some weather lines
• One zooms around Belgian capital, seeing lines on a map
• Pressure on lines one Mayday when ringing lawyers
• Pressure points are all the same to us
• A big blow for everyone when they're close!
• Air boss (anag.)
• One thus excludes lines under pressure
• Pressure lines from one such to pubs
• On weather map, air's so turbulent around Birkenhead
• ... is � nothing obstructs curves