The advisory is in effect until 6 p.m. Saturday, September 3.
NWS says minor flooding in low-lying and poor drainage areas is likely due to excessive rainfall.
1-2 inches of rain has already fallen in portions of the advisory area. NWS says up to 1 inch of additional rainfall is expected.
To view flood safety tips, click here.
NWS wants to remind those in the advisory area to use caution when traveling, and to "turn around, don't drown."