San Diego is in for a stormy ride as a major weather system moves into the region, bringing heavy rain and an increased risk of flooding. Forecasters warn that an atmospheric river will drench the area with significant rainfall, causing potential disruptions across the county.
The National Weather Service has already issued a Flood Watch ahead of the storm, urging residents to prepare for rising water levels, street flooding, and possible power outages. With rainfall expected to intensify on Thursday and continue through Friday night, San Diegans need to take this storm seriously.
How Much Rain Will Fall?
This storm isn’t just bringing a drizzle—it’s expected to dump between 1.25 and 2 inches of rain in coastal areas, including downtown San Diego. In the mountains, rain totals could reach 5 to 8 inches, especially on south-facing slopes in the San Bernardino County mountains.
Even desert areas, which usually see minimal rainfall, could get anywhere from 0.25 to 1 inch, which may cause sudden runoff and minor flash flooding.
The biggest concern is that rainfall rates could exceed 0.50 inches per hour, meaning that water could quickly overwhelm storm drains and flood low-lying areas.
Flooding Risks and Potential Damage
With heavy rain falling over a short period, the risk of flash flooding is high, particularly in areas with poor drainage. This means certain neighborhoods and streets in downtown San Diego, Mission Valley, and along the coast could see standing water.
Additionally, burn scar areas from recent wildfires are at risk for dangerous mudslides and debris flows. Fast-moving water carrying rocks, mud, and tree branches could pose a serious threat to homes and roadways near hillsides.
Motorists should be extra cautious—driving through flooded streets is extremely dangerous. Just six inches of water can knock a person off their feet, and a foot of water can sweep away most vehicles.
What You Should Do to Prepare
With the storm set to bring widespread impacts, here are some steps you can take to stay safe:
- Clear your gutters and drains. Remove leaves and debris to prevent water from backing up around your home.
- Avoid unnecessary travel. Road conditions will be hazardous, and flash flooding could happen with little warning.
- Stock up on essentials. Power outages are possible, so have food, water, batteries, and other emergency supplies ready.
- Stay informed. Sign up for emergency alerts and keep an eye on the latest weather forecasts.
- Know your flood risk. If you live in a low-lying or flood-prone area, have an evacuation plan in place.
Final Thoughts
San Diego may be known for its sunny weather, but this storm is a serious one. With multiple inches of rain expected, flash flooding, power outages, and travel disruptions are likely.
Residents are urged to take action now to prepare. Stay off the roads during heavy downpours, avoid flood-prone areas, and don’t take risks with rising water.
