SoCal Braces for a Wet Christmas Week
Angelenos, get ready for a significant shift in our typically mild winter weather as forecasters predict a wet Christmas week across Southern California. Starting early in the holiday week, a series of storm systems are expected to bring substantial rainfall, impacting travel and outdoor plans.
Rain Returns Just in Time for the Holidays
The National Weather Service has issued advisories pointing to an increased chance of precipitation beginning Monday, December 22nd, and continuing through Christmas Day and beyond. This prolonged period of wet weather is a stark contrast to recent drier conditions and is anticipated to bring much-needed moisture to the region, though not without its challenges.
While the exact intensity and timing can fluctuate, models consistently show moderate to heavy rainfall moving into the area. This event could be influenced by an atmospheric river, enhancing the amount of moisture available and increasing the potential for significant rain totals.
What to Expect on the Ground
Rainfall Amounts and Duration
Coastal and valley areas, including much of Los Angeles County, could see widespread rainfall totals of 1 to 3 inches over the week. Higher elevations and south-facing mountain slopes might experience even greater amounts, potentially exceeding 4-6 inches in localized spots. The rain is not expected to be continuous but rather arrive in waves, with periods of heavier downpours interspersed with lighter rain or breaks.
Mountain Snow Levels
For those planning trips to the mountains, significant snowfall is expected at higher elevations. Snow levels are forecast to drop, potentially reaching down to 5,000 feet, especially mid-week. This means popular mountain resorts and higher passes like those in the San Bernardino and San Gabriel mountains could see several feet of fresh snow, impacting travel on routes such as Interstate 15 over the Cajon Pass or State Route 2 through the Angeles National Forest.
Potential for Flooding and Hazards
With sustained or heavy rainfall, there is an elevated risk of localized urban flooding, especially in low-lying areas and poorly drained streets. Residents in areas near recent burn scars should remain particularly vigilant, as the risk of mudslides and debris flows will be higher. Drivers should prepare for slick roads, reduced visibility, and potential hydroplaning conditions throughout the week.
Prepare for Holiday Travel Challenges
The timing of this wet weather coinciding with one of the busiest travel periods of the year means significant disruptions are possible. Air travelers should check with their airlines for potential delays or cancellations. Those driving across Southern California or into neighboring states should plan for extended travel times, carry emergency supplies, and exercise extreme caution.
Public transportation might offer a viable alternative for shorter trips within the city to avoid traffic and hazardous road conditions. Ensure your vehicle’s tires are properly inflated and have good tread, and check your wipers and lights before heading out.
Beyond Christmas Day: What to Watch Next
While the initial focus is on the Christmas week systems, forecasters will be monitoring whether the pattern remains active into the New Year. There’s always a possibility that additional storm systems could follow, keeping conditions unsettled. For now, the main concern is managing the immediate impacts of the incoming rain and snow. Stay updated with the latest forecasts from the National Weather Service as conditions can evolve rapidly.
| Region | Expected Rainfall (Weekly) | Snow Level (Mid-Week) |
|---|---|---|
| LA Coasts/Valleys | 1-3 inches | N/A (below 5,000 ft) |
| San Gabriel Mountains | 3-6+ inches | Above 5,000 ft |
| Other Higher Elevations | 2-5+ inches | Above 5,000-6,000 ft |
Frequently Asked Questions
- When does the rain start in Los Angeles?
Expect the first significant rainfall to begin on Monday, December 22nd, intensifying at various times through the week. - How long will the wet weather last?
The systems are expected to bring rain through Christmas Day, with lingering showers possible into the weekend. - Will this impact my holiday travel plans?
Yes, anticipate slower commutes, potential traffic delays, and hazardous driving conditions due to slick roads and reduced visibility. Check airline statuses for air travel. - Is snow expected in the LA basin?
No, snow is only anticipated in the higher mountain ranges surrounding the LA basin, generally above 5,000 feet. - What should I do to prepare my home?
Clear gutters and drains, secure outdoor items, and ensure emergency supplies are accessible, especially if you live in a flood-prone or burn-scar area.
As we head into this anticipated wet Christmas week, remember to prioritize safety. Stay informed with local weather updates, adjust your travel plans as needed, and drive carefully. Wishing everyone a safe and warm holiday season!
SoCal Prepares for Wet Christmas Week
