West Alabama could see up to three inches of rainfall today and tonight alone, and the National Weather Service in Birmingham has issued a Flash Flood Watch in effect until 12 noon tomorrow (Friday, December 28, 2018). 

The text for the Flash Flood Watch is below:

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM NOON CST TODAY
THROUGH FRIDAY AFTERNOON...

The Flash Flood Watch continues for

* Portions of central Alabama, east central Alabama, northeast
  Alabama, northwest Alabama, and west central Alabama,
  including the following areas, in central Alabama, Autauga,
  Bibb, Blount, Chilton, Coosa, Dallas, Elmore, Jefferson,
  Lowndes, Montgomery, Perry, Shelby, St. Clair, Talladega, and
  Walker. In east central Alabama, Calhoun, Chambers, Clay,
  Cleburne, Lee, Macon, Randolph, and Tallapoosa. In northeast
  Alabama, Cherokee and Etowah. In northwest Alabama, Marion and
  Winston. In west central Alabama, Fayette, Greene, Hale,
  Lamar, Marengo, Pickens, Sumter, and Tuscaloosa.

* From noon CST today through Friday afternoon

* A weather system affecting Central Alabama through Friday is
  forecast to result in roughly 2 to 3.5 inches of rainfall, with
  locally higher amounts possible. Heaviest rainfall is expected
  this afternoon and into Friday morning from west to east.

* Forecast heavy rainfall will cause saturated soil. Localized
  flooding may occur, especially in urban, low lying, and poor
  drainage areas. If you encounter flooded roadways when driving,
  Turn Around, Don`t Drown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

A Wind Advisory is also in effect until midnight tonight.