The first low pressure system of the week has made ... The cooler temperatures will not be sticking around for long. A high pressure system will be forming over the Baja on Wednesday.

The season has been characterized by a battle royale between the two dominant forces in meteorology — high pressure and low pressure. Ridges and troughs. The yin and yang of the weather world.

A high rip current risk will take effect in San Diego from Saturday night through Christmas Day due to a strong low pressure ...