Los Angeles, November 12, 2025
Los Angeles is bracing for a significant atmospheric river storm forecasted to bring heavy rainfall and strong winds starting Thursday. Residents should prepare for potential hazards including flooding, mudslides, and wind damage. The National Weather Service predicts up to 4 inches of rain in certain areas. Precautionary measures and safety recommendations are urged to mitigate impacts from this severe weather event.
Los Angeles Prepares for Atmospheric River Storm: Rain and Winds Ahead
Los Angeles, California – As Los Angeles anticipates the arrival of an atmospheric river storm commencing on Thursday, November 13, residents are bracing for several days of rain coupled with a drop in temperatures. This significant weather event is expected to deliver abundant rainfall and gusty winds beginning Thursday afternoon and continuing through Friday, November 14.
Storm Forecast Overview
The National Weather Service forecasts that the storm will generate substantial rainfall across various regions of Los Angeles. Coastal and valley areas may receive between 1 to 2 inches of rain, while mountain and foothill locations could see higher totals ranging from 2 to 4 inches. The most intense rainfall is likely to occur during the latter part of Thursday, potentially leading to swift changes in local weather conditions.
Additionally, gusty winds are anticipated, particularly along the Grapevine section of Interstate 5 and the Antelope Valley, where gusts could reach up to 50 mph. In downtown Los Angeles, wind gusts may be around 21 mph, prompting residents to take precautionary measures to safeguard their properties.
Potential Hazards to Monitor
With the expected storm, several hazards may arise:
- Flooding: The predicted heavy rain can lead to localized flooding, especially in regions with inadequate drainage systems. Commuters should prepare for potential delays and road closures.
- Debris Flows and Mudslides: Areas affected by recent wildfires face increased danger from debris flows and mudslides, and residents in those regions should stay informed and prepared for possible evacuation orders.
- Wind Damage: The strong winds could result in downed trees and power lines, leading to outages and potential damage to properties.
Safety Preparations for Residents
To mitigate the impact of the storm, residents are advised to follow these recommendations:
- Stay Informed: Regularly check local weather updates and heed advisories from the National Weather Service and local authorities.
- Plan Ahead: Allocate extra time for commuting, especially during peak storm hours, and consider postponing non-essential travels.
- Secure Property: Bring in or secure outdoor furniture, decorations, and other loose items to protect against wind damage.
- Emergency Kit: Assemble an emergency kit that includes essentials such as water, non-perishable food, medications, flashlights, and batteries.
Understanding Atmospheric Rivers
Atmospheric rivers represent highly concentrated bands of moisture in the atmosphere capable of transporting extensive amounts of water vapor across regions. While they serve a vital role in delivering essential rainfall to areas in need, they also pose risks such as intense precipitation, flooding, and powerful winds. Awareness and adequate preparation for such weather patterns are critical for reducing adverse effects.
Residents are encouraged to consult local resources for timely updates and strategies to cope with the upcoming storm.
Frequently Asked Questions (FAQ)
What is an atmospheric river?
An atmospheric river is a narrow band of concentrated moisture in the atmosphere that can transport large amounts of water vapor across regions, leading to significant rainfall and potential flooding.
When is the storm expected to arrive in Los Angeles?
The storm is forecast to begin impacting Southern California on Thursday, November 13, with the heaviest rainfall expected Thursday afternoon and evening, continuing through Friday, November 14.
What areas are most at risk during this storm?
Coastal and valley regions may receive 1 to 2 inches of rain, while mountain and foothill areas could see 2 to 4 inches. Recent burn scars in Southern California increase the risk of debris flows and mudslides.
What precautions should residents take?
Residents should stay informed by monitoring local weather updates, plan ahead for potential travel delays, secure outdoor items to prevent wind damage, and prepare an emergency kit with essentials such as water, non-perishable food, medications, flashlights, and batteries.
Where can I find more information about the storm?
For the latest updates and detailed information, residents should consult the National Weather Service and local news outlets.
Key Features of the Upcoming Storm
| Feature | Details |
|---|---|
| Expected Rainfall | 1 to 2 inches in coastal and valley regions; 2 to 4 inches in mountain and foothill areas. |
| Wind Gusts | Up to 50 mph along the Grapevine section of I-5 and in the Antelope Valley; up to 21 mph in downtown Los Angeles. |
| Potential Hazards | Flooding, debris flows, mudslides, and wind damage. |
| Preparation Recommendations | Stay informed, plan ahead for travel delays, secure outdoor items, and prepare an emergency kit. |
Now Happening on X
- @NWSLosAngeles (November 10, 2025, 2:16 PM): A low-pressure system will bring rain starting Wednesday night in northern areas, reaching the LA area by midday Thursday, with a 10-20% chance of thunderstorms in San Luis Obispo and Santa Barbara counties; potential impacts include travel delays, localized flooding, and risks for burn area flash flooding and debris flows. View on X
- @ReadyLACounty (November 6, 2025, 3:02 PM): Warming and drying winds are expected through Monday, followed by a storm system from Wednesday to Saturday; moderate coastal flooding possible today and tomorrow with wind gusts up to 45-50 mph in Antelope Valley, and gusts of 25-40 mph in mountains and valleys over the weekend. View on X
- @ReadyLA (November 5, 2025, 2:06 PM): Windy atmospheric river activity currently affecting Northern California is expected to move into Southern California next week; residents should follow weather reports and prepare in advance for possible impacts. View on X
- @iembot_wpc (November 9, 2025, 7:43 PM): An atmospheric river is set to impact portions of California mid-to-late week, bringing threats of heavy rainfall and mountain snows across the region. View on X
- @solmesj23 (November 11, 2025, 8:44 PM): Expresses relief that warnings for the fast-moving atmospheric river storm capable of heavy rain often lead to no actual events, linking to a Los Angeles Times article on the approaching system. View on X
- @erkinsalievla (November 11, 2025, 9:51 PM): Shares a Los Angeles Times article highlighting the fast-moving atmospheric river storm rolling toward California with potential for heavy rain. View on X
- @HalfCourtMikeD (November 11, 2025, 7:40 PM): Posts a SmartNews alert about the fast-moving atmospheric river storm capable of heavy rain approaching California. View on X
- @Truth_Quest30 (November 11, 2025, 5:01 PM): Notes that weather predictions indicate a big, windy rain storm hitting Los Angeles on Thursday, November 13, 2025. View on X
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