The weather warning came as volunteer groups were walking in the annual effort to raise funds with which to battle cancer.
The walk began at 5:30 p.m. with a survivor torch relay from the Law Enforcement Center to the park and was followed by the opening survivors lap.
Officials with the race said about 9 p.m. that "preliminary reports" indicated that over $200,000 had been raised in the battle against cancer.
Floyd and its neighboring counties, including much of North Georgia, will remain under the tornado watch until 5 a.m., the National Weather Service said.
For more on the Relay for Life, see Saturdays Rome News-Tribune