Reno, Nev. – Residents across western Nevada and northeast California should stay alert for developing thunderstorms today as slow-moving storms increase the potential for heavy rainfall and localized flash flooding. The greatest concern extends south of Interstate 80, where storms could become strong and linger into the evening.
According to the National Weather Service in Reno, showers and thunderstorms are expected to begin developing as early as 11 a.m., with the most active period occurring between noon and 7 p.m. Storms may continue in some locations through 11 p.m., while isolated activity north of Interstate 80 into northeast California could persist overnight.
The highest coverage of storms, with a 30% to 50% chance, is forecast south of I-80, including areas near Carson City, Minden, Gardnerville, Hawthorne, Bridgeport, Mammoth Lakes, and surrounding communities. While a few storms may produce gusty winds and small hail, the primary hazard is heavy rainfall capable of producing rapid runoff and localized flash flooding.
According to the NOAA Weather Prediction Center, portions of the region remain under a marginal risk for flash flooding, with slow storm movement increasing the likelihood that heavy rain could fall repeatedly over the same locations. Burn scars, slot canyons, dry washes, and low-water crossings will be especially vulnerable to flooding.
Motorists should be prepared for sudden reductions in visibility and water covering roadways, particularly along stretches of I-80, U.S. 395, and mountain routes. Never drive through flooded roads, as water depth and road conditions can change rapidly.
Thunderstorm chances gradually diminish overnight, but isolated storms may continue north of Interstate 80 into northeast California. Additional weather statements or flash flood warnings could be issued if storms intensify or become slow moving.
