October 12 Update: Chula Vista Records Nearly an Inch of Rain
Chula Vista recorded 0.99 inches of rain in the three-day period ending early Monday morning, according to National Weather Service totals reported by NBC 7.
Nearby South Bay totals were higher in some locations: National City recorded 1.83 inches and Brown Field recorded 1.51 inches. Across San Diego County, the heaviest totals were in mountain areas, where several gauges recorded more than four inches.
See NBC 7’s countywide rainfall totals.
Scattered showers may continue Monday
The heaviest tropical rainfall moved through San Diego County on Sunday, but scattered showers remained possible Monday as the unsettled pattern continued behind Rachel’s tropical moisture.
The National Weather Service said additional rainfall through Monday night could range from roughly 0.10 to 0.25 inches near the coast, with larger amounts possible in the mountains.
South Bay totals
- Chula Vista: 0.99 inches
- National City: 1.83 inches
- Brown Field: 1.51 inches
These are three-day rainfall totals reported as of 5:04 a.m. Monday, October 12.
What residents should watch for
Even after the heaviest rain passes, saturated ground, ponding on roads and localized drainage problems can linger. Residents should continue to use caution on wet roads and avoid driving through standing or moving water.
ChulaVista.com will continue monitoring Chula Vista-specific weather alerts, road conditions and power outages if additional problems develop.
Sources: National Weather Service rainfall totals as reported by NBC 7 San Diego. Updated October 12, 2026.
