Air pressure ... high pressure system. When winds converge toward the center of a low pressure system, the warm air rises, cools, and condenses the water vapor into clouds, often resulting in rain.

Parts of northern California could see up to a foot of rain, but Phoenix will remain dry and warmer than usual.

A low pressure ... rain looks to arrive between 9 AM and 2 PM Friday, with areas further west seeing impacts first. Temperatures on Thursday night will be above freezing in NW Florida, and high ...

Weather changes can trigger migraines and joint pain for many, including extreme heat or cold, high humidity ... brewing before the rain starts, you can blame the low-pressure system moving ...

“Normally, in between Santa Anas you’ll at least get a rain ... of low-pressure system that is expected to move down from Canada into interior California and Nevada and bring wind from high ...

For centuries, people have claimed that their aching joints can predict changes in the weather, often reporting increased discomfort before rain or cold fronts.

The latest:Chances of snow, freezing rain in Florida ... two critical low-level elements a day ahead of a winter storm: first, a cold surface anticyclone (high pressure) over much of the United ...

The weather will turn unsettled today as an area of low pressure tracking across the country moves east. Precipitation will continue expanding north through the afternoon with rain developing ...