Pacific Low Pressure Brings Rain and Cooler Weather This Christmas

Meteorologists issued an updated weather bulletin on December 22 warning that a pattern change would send a Pacific low pressure system into the Desert Southwest, increasing rain chances and lowering temperatures across the region during Christmas week. Light showers began as early as Tuesday afternoon and the wettest period is centered on Tuesday night through Christmas Day. Forecast guidance indicated generally light accumulations, with tenths of an inch up to a quarter inch possible locally, and higher amounts in favored locations.

Because of the expectation for widespread showers and the potential for localized flooding, the Weather Authority First Alert ACTION Days advisory was issued for Tuesday night through Thursday night. That advisory covers timing when many residents travel and when outdoor activities and services are scheduled, raising the chance of weather related travel delays and disruptions across California and the broader Southwest.

For Yuma County the immediate public safety concern is not heavy snow but standing water on roadways and reduced visibility from steady rain. Local roads and low lying areas can experience rapid ponding even when totals remain modest, and motorists should allow extra travel time and avoid driving through flooded areas. Active weather across the region also raises the possibility of delays at airports and along major highways, which could affect people returning home for the holidays or attending medical appointments.

There are public health implications for vulnerable groups. Cooler wet conditions increase the risk of hypothermia and other cold related illness for people without stable shelter, and rain can complicate outreach efforts and access to warming centers. Health care providers and clinics may see appointment disruptions, so patients with scheduled treatments or time sensitive care should check with providers in advance and plan for transportation challenges.

Emergency services and county offices are monitoring conditions. Residents should stay informed through official weather channels, plan ahead for travel, and follow roadway safety guidance. Small accumulations do not eliminate risk, and community resilience during the holiday depends on timely preparation and support for those most vulnerable to wet and colder conditions.