The 48 hour Surface Analysis map shows current weather conditions, including frontal and high/low pressure positions, satellite infrared (IR) cloud cover, and areas of precipitation. A surface ...

The models divide the atmosphere at the surface as well as up through the sky, separating it into grid boxes or parcels of ...

Understanding atmospheric pressure is vital, newsroom meteorologist Justin Ballard said, because those giant H’s and L’s representing high and low air pressure systems on a weather map are ...

[Image: NOAA Weather Prediction Center] Other ... cool air southward toward the equator west of lows. A map illustrates lines of surface pressure, called isobars, with areas of high and low ...