What does it mean when you have a low barometric pressure?

Answer by  cyrtanthus (21)

When the barometric pressure is high, the atmosphere is heavier. That "restrains" the weather, so to speak, and we see beautiful sunny days. When the pressure drops, the weather has freedom to move, the wind picks up, the clouds let loose, and we see stormy weather, rain, wind, hurricanes, and the like.

Answer by  elynne (1153)

To have the barometer high to lower pressures are usually associated with a worseing of the weather. Low pressure fronts are ones that bring storms and rain, during spring through fall. In winter very low fronts bring snow and wind. The conflict of high and low pressure is the cause of tornados