Indirectly what causes most of our problems are the seasons, affecting the cooling and heating of the land, coupled with the slower cooling and heating of the oceans. This suggests a key point here. When two high air masses of unequal temperature meet up they collide almost like an ocean wave breaking. The pressure plummets maybe over a large area. That s when the wind starts to howl.
Air travels from the high pressure area to the low pressure area.
The warmer air cooling quickly losses it s moisture, heavy rain and lot s of wind blowing from high to low develops quickly. The lower the pressure, the more wind. Pressure on the weather map is measured in millibars, with equal points of pressure connected forming ridge lines, that we call isobars. Pressure is determined with the aid of a barometer, measuring of course the atmospheric pressure. So lets put it altogether and see how to forecast marine weather using the aforementioned tools of analysis along with a prayer to St. Brendan.