But it all starts with this change in pressure over a distance—what meteorologists like me call a pressure gradient. Strong ...

This deficit relative to pressure farther away at the same altitude creates a pressure-gradient force that pulls air inward to fill the space vacated by the rising, buoyant air. The reverse ...

In particular, near the shoulder, the pressure gradient changes from being negative (decreasing pressure) to positive (increasing pressure). The force due to pressure differences changes sign from ...

The closeness and relative strength of these systems is called a pressure gradient. The bigger the difference in pressure between the two systems over smaller spaces, the bigger the pressure ...

Today, the area experiences a weak frontal boundary. Isolated showers can not be ruled out, but most do not see any rain. As the front passes, morning clouds ...