Los Angeles, CA — A powerful atmospheric river system is expected to sweep across California beginning November 13, bringing heavy rainfall to Southern California and significant snowfall to the Sierra Nevadas, according to the National Weather Service (NWS).
Forecasters say the system could mark the state’s first major storm event of the season, following a period of warm, dry weather in early November.
Rain and Snow Expected Across California
Meteorologists are tracking the development of an atmospheric river that is projected to linger over the state for several days, delivering widespread rain along the coast and mountain snow at higher elevations.
“A week of heavy precipitation across the state is expected to begin on November 13,” the National Weather Service stated in its latest forecast.
According to Victorville Daily Press, the long-range forecast indicates that heaviest rainfall will stay along the coastal areas as the system moves eastward into Arizona and Nevada later in the week.
Coastal and Inland Impacts
The National Weather Service notes that the Los Angeles Basin, Ventura County, and Orange County could see moderate to heavy downpours between November 13–16, potentially leading to localized flooding in low-lying and urban areas.
In the Sierra Nevadas, the same system is expected to bring several inches of snowfall, with the potential for more than a foot at higher elevations. Road conditions along Highway 50, I-80, and mountain passes could be impacted as temperatures drop.
Temperature Forecast by Region
While the incoming storm will bring rain and snow later in the month, temperatures remain mild across much of Southern California through November 13.
- Victor Valley: Highs between 74–79°F
- Barstow: Highs remaining in the 70s and low 80s
- Big Bear Lake & Wrightwood: Highs in the 60s
- Inland Empire: Warmest area with highs near the 80s
“More information about the weather pattern will be available over the next few days,” weather experts added, noting that forecast confidence increases as the storm approaches.
Seasonal Outlook and Timing
This upcoming storm system coincides with key November dates — Veterans Day on November 11 and Thanksgiving on November 27 — but meteorologists emphasize that the heaviest rainfall is expected after the holiday weekend.
Residents are encouraged to monitor updated NWS alerts and prepare for changing travel conditions, especially in mountain and desert regions.
Preparing for Wet Weather
Authorities recommend that residents take precautionary measures before the rain begins:
- Clear gutters and storm drains to prevent flooding.
- Avoid travel on mountain roads during periods of heavy snow.
- Check tire tread and windshield wipers ahead of wet conditions.
- Monitor weather updates via NWS alerts or local news outlets.
The National Weather Service will continue to refine the forecast as the atmospheric river develops over the Pacific Ocean.
What are your thoughts on this incoming storm system and how it might impact travel across the state? Share your views in the comments below.
