The low-pressure system moved slowly toward land, limiting the system's development.

Ohio was on the warm sector of the low-pressure system.

These developed into high- and low-pressure systems that moved the jet stream far to the north.

The storm was part of a large low-pressure system that crept up from the southern states.

Operating pressure valves are supposed to be closed to protect the low-pressure system.

This threat passed when rain shower moved through the California area because of a low-pressure system off the coast.

However, it is already a low-pressure system, hence the name "depression".

Two low-pressure systems offshore started kicking up winds and waves.

It then moved inland and merged with a low-pressure system around Toronto on the 20th.

"We can't generate a strong enough low-pressure system to combat the storm.

However, the continuous rainfall for about 30 hours was perhaps the most significant feature produced by the low-pressure system.

That one differed slightly because the big low-pressure system was then centered over the Northeast.

The wind had died in deference to the swiftly oncoming low-pressure system.

Many of the world's rainforests are associated with these climatological low-pressure systems.

Beryl formed on May 26 from a low-pressure system.

Their goal is to ride the front end of a low-pressure system 3,000 miles across the Atlantic Ocean.

However, by the next day, a low-pressure system formed in the frontal clouds near Bermuda.

I admitted that it was but didn't caution her about the possible consequences of the migrating low-pressure system.

Down in Wellington, the coffee's hot, the beer's cold and wind from the politicians generates its own low-pressure system.

Finally, a low-pressure system came in and pushed the stagnant, coal-dust- laden air away.

Although low-pressure systems in February are not uncommon, the slow and westward moving nature of this particular system was extraordinary.

The low-pressure system slowly began to intensify as it crossed the Pacific Ocean.

On land we hardly notice a low-pressure system that scatters rain and blows thirty-five miles an hour.

All day, the weather forecasters had been talking about a huge low-pressure system that was pinwheeling up from the southern Rockies.

Wetter air is the result of approaching low-pressure systems which sweep fronts over the country from the southwest.