A flash flood warning was issued Wednesday afternoon for parts of Sacramento and Yolo counties, with forecasters warning of potential dangerous flooding through 7:30 p.m., according to the National Weather Service Sacramento office.
The warning, issued at 4:35 p.m., covered northwest Sacramento County and a neighboring portion of Yolo County, including Sacramento, West Sacramento, North and South Natomas, Rio Linda and Elverta. Automated gauges operated by Sacramento County emergency officials indicated that three-quarters of an inch of rain fell in Rio Linda in the hour ending 5:30 p.m. That precipitation was less intense at neighboring gauges — one monitoring system on the East Drain Canal near Truxel Road and Terracina Drive recorded .65 inches of rain in three hours, but less than .05 inches had fallen in an hour at 5:30 p.m.
Doppler radar indicated thunderstorms capable of producing heavy rain were moving across the region, part of a second wave of heavy rains from the latest atmospheric river storm, with flash flooding ongoing or expected to begin shortly, the weather service warned…