A new high-pressure system is under construction in adjacent neighborhoods.

A high-pressure system that has settled overhead for months is about to break up, they say.

Supposed to clear off about dawn, then the high-pressure system takes over.

In summer, high-pressure systems usually bring sunny and fairly warm weather.

In late spring a high-pressure system builds off the Pacific coast.

In the summer, Mediterranean high-pressure systems bring warm, sunny weather.

Immediately, I thought of the high-pressure system as a possibility.

They generally form during high-pressure systems, such as after a cold front.

This made way for a large, rainless high-pressure system, which moved into the gap from the south.

The spots are probably high-pressure systems that come and go with air circulation, as on Earth.