Here is the 3:30pm NWS radar from Columbia, SC. Moderate to occasionally heavy rains are
My AccuWeather colleague, Brandon Sullivan, tweeted this moments ago:
The photo below, via Twitter, was taken near downtown Columbia and it illustrates the now changing nature of the threat. It isn't just flash flooding, major rives are now rising rapidly.
For example, here is the hydrography for the Congaree River at Carolina Eastman:
It is impossible for me to be able to run down the stage forecasts for every river in the region. Please do to your local NWS web page and check for rivers in your area. Scroll down to learn the exact areas where flooding is forecast.