San Francisco’s famous hills may be about to turn into fast-moving streams. A powerful storm system fueled by an atmospheric river is closing in on the Bay Area, and it’s bringing all the ingredients for a messy, chaotic 48 hours. Think heavy rainfall, 50 mph winds, and flash flooding—all hitting at once.
If you live in a low-lying neighborhood or commute through flood-prone streets, this is your heads-up. Prepare now. Officials are warning of potential power outages, flooded intersections, and dangerous driving conditions. This isn’t your typical rainy day—this storm has teeth.
So, What Exactly Is Coming?
Starting Monday evening and stretching into Tuesday, a firehose of moisture from the Pacific will deliver up to 4 inches of rain in less than 24 hours. The heaviest rainfall will hit late tonight and continue into the early hours of Tuesday morning.
But here’s where things get tricky: Strong southerly winds gusting up to 50 mph could make matters worse by knocking down trees and power lines. The saturated ground, thanks to recent rains, means even healthy trees are at risk of falling, potentially blocking roads or cutting off power in neighborhoods across the city.
The National Weather Service has issued a Flood Watch, warning of urban flooding in areas where storm drains may get overwhelmed. Rivers, creeks, and low-lying spots could also see rapid water buildup, especially if the rain comes down harder than expected.
What Does That Mean for Daily Life?
Let’s be honest—this storm could be a major inconvenience for anyone who isn’t prepared. Here’s what to watch out for:
1. Flooded Streets and Intersections
San Francisco’s streets aren’t exactly built for handling torrents of water, and when the city’s drainage system reaches its limit, the water has nowhere to go. Intersections could turn into small lakes, and areas like SoMa, the Mission, and parts of the Marina are particularly at risk of seeing standing water.
If you’re driving, be extremely cautious. Just 12 inches of water can float a small car, and once you lose control, it’s game over.
2. Power Outages Could Hit Without Warning
High winds combined with soggy ground is the perfect recipe for falling trees and power lines. Neighborhoods with older infrastructure are particularly vulnerable, and outages could last anywhere from a few hours to an entire day, depending on the damage.
If you’ve ever experienced a blackout, you know the drill: Charge your devices now. Stock up on flashlights, batteries, and extra blankets just in case.
Worst-case scenario: You’re stuck in the dark, and your phone dies just as you’re trying to check the latest storm update. Don’t let that happen.
3. Wind Damage and Flying Debris
You might not think much of the patio furniture on your deck, but when winds hit 50 mph, even a lightweight lawn chair can become a projectile. Garden tools, trash cans, and decorations should be tied down or brought indoors before the winds kick into high gear tonight.
Coastal areas will experience the worst of the gusts, especially near Ocean Beach and Twin Peaks. If you’re planning to go out, be careful—falling branches and debris could pose a real danger.
How to Stay Ahead of the Storm
- Check storm drains and gutters: If they’re clogged, water will back up and flood the streets faster.
- Tie down or move outdoor furniture: Don’t let your patio umbrella become part of your neighbor’s yard.
- Stay off the roads if possible: Flooded streets and downed power lines are a bad combination.
- Prepare for power outages: Fully charge your phone, and have backup batteries or portable chargers ready.
- Keep an eye on emergency alerts: The situation can change quickly, and staying informed is key.
When Will It Be Over?
By Tuesday afternoon, the worst of the rain should ease up, but don’t let your guard down just yet. Lingering showers and gusty winds could continue into Wednesday, keeping roads slick and some areas prone to flash flooding. By Thursday, the skies should clear, but temperatures will remain chilly.
The Big Takeaway
This storm isn’t just “a bit of rain.” It’s a full-blown weather event with real risks—flooded streets, power outages, and dangerous winds that could disrupt daily life. The good news? You’ve got time to prepare. The bad news? If you ignore the warnings, you might find yourself stuck in the middle of a waterlogged street or without power when you need it most.
Quick Checklist to Stay Safe:
Clear gutters and storm drains ,Charge your phone and backup batteries ,Bring loose outdoor items inside ,Avoid driving through flooded areas ,Monitor local news and alerts
