The 36 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 24 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 ...

High pressure brings a depression weather system. Low pressure is shown on an isobar map when the numbers are 1000mb or below. Depressions will bring rain. Winds will be calmer in a depression.