The National Weather Service has issues a Flash Flood Watch for Boulder County. This includes the City of Boulder and Boulder County.
Forecast rainfall: Heavy rainfall of 0.40″ to 1.20″ in 10-30 minutes will be possible with individual thunderstorm cells today. Heavy rainfall of up to 1.60″ in 60-90 minutes due to training thunderstorms will be possible as well.
Please make sure your weather radio is on, continue to monitor weather, always take actions for your own safety and please report public safety concerns (such as damaged roads) to 911.