The focused axis of heavy rain that was over the Midwest yesterday has slowly moved east and was currently producing heavy rain over parts of the Southeast U.S. Note the focused streaming feed of moisture as indicated by the red arrow.
Heaviest rainfall over the past 24 hours has been centered in Alabama, generally near and just east and southeast of Birmingham. Areas of rainfall in the 3 to 4 inch range have been observed, with isolated high amaounts.
Over the next 24 hours, this focused feed of moisture, supported by an upper jet streak (providing upper divergence), will persist over parts of the Southeast U.S. The following image combines several heavy rainfall parameters into the possible placement for heaviest precipitation. The red-dashed lines indicate the near-term potential for heaviest rainfall–Northeast Alabama into eastern sections of Tennessee.
Looking a bit further out, here is a rapid-refresh model out through the next 15 hours showing the placement of heaviest rainfall. I have outlined the forecast for heaviest rainfall by the dashed white line. The area most likely to receive heaviest rainfall today and tonight, in the 1-3 inch range with locally higher amounts up to 5 inches, includes Northeast Alabama, Northwest Georgia, and parts of Central and Southeast Tennessee. Urban flooding and widespread pooling of water is likely within areas of heaviest rainfall. Also, the flash flood potential will be enhanced over higher elevations.
Here is the latest NOAA rainfall forecast for this event.
(Disclaimer: Information provided by BWO is intended for informational/educational use only. Refer to official government sources for watch, warning, and forecast information)