because those giant H’s and L’s representing high and low air pressure systems on a weather map are meaningless without understanding their significance. HELP FROM HIGH PRESSURE: How Houston's ...

A low pressure system is like a giant funnel of wind spiralling inwards and upwards forcing warmish air in the centre to rise. As air rises it cools and clouds form. In everyday life, the pascal ...

The 48 hour Surface Analysis map shows current weather conditions, including frontal and high/low pressure positions, satellite infrared ... devise a theory on storm systems.

One type of intense surface low-pressure system you might have heard of before ... usually shows up in vivid detail when viewed with satellite imagery. Sometimes these upper lows become completely ...