Residents across San Diego County faced an emergency tropical storm watch issued on October 8, 2026, as Tropical Storm Rachel tracked northward toward northern Baja California and Southern California. The rare weather event brings serious threats of heavy rain, flash flooding, coastal flooding, and gusty winds extending from coastal zones into regional desert areas.
The National Weather Service issued the watch across San Diego’s coast, valleys, mountains, and deserts. Forecasters warned that the system could impact the region starting late Saturday and continuing into early Tuesday. Projections indicate that San Diego could receive up to 1 inch of rain, while parts of Baja California could accumulate 1 to 3 inches or more.
High Tides and Severe Coastal Flooding Concerns
Meteorologists highlighted that coastal flooding remains one of the most critical threats associated with Tropical Storm Rachel. High tides running 1 to 2 feet above normal-compounded by an ongoing marine heat wave and a rapidly strengthening El Niño-created vulnerable conditions along the Southern California coastline.
A coastal flood advisory and warning framework remained active across Los Angeles, Orange, and San Diego counties. The National Oceanic and Atmospheric Administration’s storm surge model projected Sunday morning’s high tide in San Diego Bay to reach approximately 8.2 feet. This level matches the all-time record set in November 2015, which previously caused significant street flooding in San Diego’s Midway District and swamped businesses along Paradise Creek in National City.
In addition to rising sea levels, surf was expected to peak at 5 to 7 feet-and up to 9 feet in specific zones-across San Diego and Orange counties, threatening severe beach erosion and dangerous rip currents.
Inland Flash Floods and Wind Hazards
Away from the immediate coastline, attention shifted toward heavy rainfall rates capable of triggering rapid runoff. A flood watch was implemented for all of San Diego County from Saturday evening through Sunday evening.
- Rainfall Estimates: Coast, valleys, and deserts anticipated 0.25 to 1 inch of rain. Mountain zones expected 1 to 2 inches, with localized desert totals reaching up to 5 inches.
- Flash Flooding: Mountain areas faced elevated risks of isolated flash floods and landslides, with rainfall rates potentially exceeding half an inch per hour.
- Winds: Interior regions anticipated wind gusts of 40 to 55 mph, with local gusts reaching up to 60 mph.
Emergency Preparedness and Safety Guidelines
Local authorities and emergency management agencies mobilized immediately, urging residents to monitor official updates from the National Weather Service and @NWSSanDiego. Officials emphasized foundational safety protocols:
“Do not drive your vehicle through a flooded roadway: Turn Around, Don’t Drown. Clear debris from storm drains and gutters, and secure outdoor items that could blow away.”
County officials also encouraged residents to register mobile and VoIP phone numbers with AlertSanDiego to receive real-time emergency notifications. Residents were also advised to download the Alert San Diego mobile app and utilize the interactive emergency map to locate sandbag distribution sites across the region.
