Rain is already falling around Knoxville Saturday morning, and the region is in for a rough weather day as the remnants of Hurricane Isaias push through. Showers will continue before thunderstorms become more likely this afternoon, with a high near 73 and east winds that could gust to 40 mph.
Wind Advisory Covers Knoxville Through Sunday Morning
The National Weather Service has issued a Wind Advisory for Knox County through 8 a.m. Sunday. East winds of 20 to 30 mph are expected, with gusts up to 50 mph possible; stronger gusts are more likely in the mountains and foothills.
The gusty conditions could blow around unsecured objects, snap tree limbs and cause isolated power outages. Drivers of high-profile vehicles should use extra caution, particularly on exposed roads and bridges.
Rain And Storms Continue Into Saturday Night
Showers or storms are possible Saturday night. Saturday night will stay mostly cloudy, with a low near 63 and another 90% chance of precipitation.
Rain is forecast in Knoxville from Saturday through Sunday. Heavy downpours may create ponding and difficult driving conditions, while the broader East Tennessee region faces a risk of isolated flooding in areas that receive the heaviest rain.
Historical Rainfall And Local Flooding Context
A comparison with Tropical Storm Cindy in 2017 is limited: the National Hurricane Center forecast 3 to 5 inches of rain, with locally higher amounts possible, in portions of the Tennessee and Ohio Valleys through Friday. That was a forecast, not a record of rainfall or flooding in Knoxville, so it does not establish how Cindy’s local impacts compared with Isaias. The Knox County Floodplain Program says heavy rain can overwhelm drainage systems and cause localized flooding, including outside mapped FEMA floodplains. This general guidance does not identify particular Knoxville-area streams or roads as vulnerable.
Sunday Stays Damp Before A Sunny Turn
Sunday brings more rain showers, a high near 71 and southwest winds of 10 to 15 mph, with gusts up to 25 mph. Rain chances taper Sunday night, setting up a mostly sunny Columbus Day with a high near 82.
The warmup continues next week, with sunny skies and highs near 85 Tuesday and 84 Wednesday. By Friday, temperatures ease back toward 79 with a chance of showers.
