LA Braces for Major Atmospheric River Storm

Los Angeles is preparing for a significant atmospheric river event set to bring heavy rain and strong winds across the Southland. This powerful storm, originating from a moisture plume over the Pacific, is expected to impact the region starting this weekend and continuing through early next week, prompting alerts for potential flooding and hazards.

When to Expect the Heaviest Impacts

While light rain may begin to fall as early as Sunday, February 4th, the core of this intense atmospheric river is predicted to hit Los Angeles from Sunday evening through Tuesday, February 6th. The most significant rainfall and strongest winds are generally expected throughout Monday, making it the most critical day for residents to exercise caution.

What to Expect: Rain, Wind, and Snow

Torrential Rainfall

Forecasts indicate substantial rainfall totals for the entire Los Angeles area. Coastal and valley regions could see 3 to 6 inches of rain, while foothills and mountains may be inundated with 6 to 12 inches. The concern isn’t just the total amount, but the intensity, with rainfall rates potentially reaching 0.5 to 1 inch per hour at times. This rapid accumulation significantly increases the risk of flash flooding.

Damaging Winds

Strong winds will accompany the rain, posing additional threats. Gusts are predicted to reach 40 to 60 mph in valleys and coastal areas, with mountain ridges and passes potentially experiencing gusts of 60 to 80 mph or even higher. These powerful winds can lead to downed trees, power lines, and widespread power outages.

Mountain Snowfall

For those living near or traveling to higher elevations, significant snowfall is expected. Snow levels are forecast to drop to around 6,000 to 7,000 feet, bringing several feet of snow to the San Gabriel Mountains. This will create hazardous driving conditions and could lead to road closures in mountain communities.

Potential Impacts for Los Angeles Locals

This atmospheric river brings several serious implications for daily life in Los Angeles:

• Urban Flooding: Expect widespread street flooding, especially in low-lying areas, underpasses, and areas with poor drainage. Driving through flooded streets is extremely dangerous and should be avoided.
• Mudslides and Debris Flows: Areas recently affected by wildfires, such as the Bobcat, Lake, and Ranch2 fire scars, are particularly vulnerable to mudslides and debris flows due to the saturated soil and lack of vegetation. Residents in these areas should be prepared for potential evacuations.
• Power Outages: The combination of strong winds, heavy rain, and saturated ground makes power outages highly likely across the region. Prepare for the possibility of losing power for an extended period.
• Travel Disruptions: Road closures, traffic delays, and hazardous driving conditions are anticipated throughout the storm. Consider limiting non-essential travel during the peak of the storm, especially on Monday.

Comparing Storm Intensity

To put this storm into perspective, here’s a brief comparison:

Preparation and Safety Tips

Los Angeles residents should take proactive steps to prepare:

• Clear gutters and storm drains around your property to prevent localized flooding.
• Secure any loose outdoor items, such as patio furniture, trash cans, and holiday decorations, to prevent them from being blown away by strong winds.
• Charge all electronic devices, including cell phones, laptops, and power banks, in case of power outages.
• Have an emergency kit ready with flashlights, extra batteries, a first-aid kit, a supply of non-perishable food and water, and any necessary medications.
• Monitor local news and official weather alerts from the National Weather Service and city authorities for the latest updates and any potential evacuation orders.
• If you live in a flood or mudslide prone area, consider having sandbags readily available.
• Avoid driving through flooded roads or rapidly moving water. “Turn around, don’t drown” is a critical safety reminder.

FAQs

• When will the heaviest rain and wind hit Los Angeles?
  The most intense conditions are expected throughout Monday, February 5th, from morning through late afternoon.
• What areas are most at risk for flooding and mudslides?
  Low-lying areas, underpasses, and communities near recent wildfire burn scars are at the highest risk for flooding and debris flows.
• Should I prepare for power outages?
  Yes, the combination of strong winds and heavy rainfall makes power outages very likely. Have an emergency kit ready.
• Is it safe to drive during the storm’s peak?
  Non-essential travel should be avoided, especially on Monday. If you must drive, be extremely cautious, watch for standing water, and never drive through flooded roads.

Staying informed and taking proactive measures are key to navigating this significant weather event safely. Prioritize your safety and the safety of your loved ones by preparing now and heeding all official warnings.

LA Braces for Major Atmospheric River Storm