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Snow to Spread Across West as Temperatures Plunge

An active weather pattern is in place across the western United States, AccuWeather forecasters say, and the arrival of a storm in the Northwest will eventually result in widespread impacts from California to the central and southern Rockies.

An area of low pressure was diving southeastward over the interior West on Tuesday. As the storm strengthens will moving into the Southwest region, areas of snow will break out and become locally heavy from the Sierra Nevada to the Rockies in Colorado and the various ranges in northern Arizona and New Mexico.

Gusty Winds, Slight Chance of Rain Expected in San Diego County

Gusty winds are expected Tuesday in the San Diego County mountains and deserts, plus light rain could fall tonight in coastal and inland valley areas, according to the National Weather Service.

A weak, low-pressure system moving inland Tuesday will cause temperatures to drop through Wednesday, then the mercury will gradually rise heading into the weekend, forecasters said.

The NWS issued a wind advisory that will be in effect from noon Tuesday to 5 a.m. Wednesday in the mountains and deserts.

Winds out of the west are expected to be between 20-30 mph, with gusts possibly reaching 45 mph near desert slopes and through mountain passes, forecasters said.

There is also a slight chance of light rain showers in coastal areas and the western valleys tonight, according to the NWS. Coastal areas have a 20% chance while the western valleys have a 30% chance.