Alabama Flash Flood – 18 April 2013

Early on Saturday, May 18, 2013, a complex of “training thunderstorms” dumped torrential rainfall in parts of central and eastern Alabama, triggering significant flash flooding.

  1. Photos, Reports

  2. Life-threatening flooding ongoing at Lake Chinnabee (base of Mt Cheaha). People in that area should move to higher ground immediately!
  3. Coldwater Creek in the parking lot at park area 78/202 Calhoun, County @spann #alwx
  4. HWY 174 closed @ Mineral Springs Rd. spann #alwx @ Casa Kearley
  5. The Weather Channel Facebook friend Ron Parson sent us the photo below from Lake Wedowee, Ala.  “This dock was two feet above the water yesterday (Friday).”
  6. lake-wedowee-fb-18may13.jpg
  7. Oxford FD performing citizen water evacuation via flat bottom boat. 78/202 Calhoun, Co. @spann #alwx
  8. @weatherchannel Pell City, AL (Eden) Roberts Mill Pond Road just north of the railroad tracks looking south. #ALWX
  9. Flash #flood emergency for Oxford, Anniston, Talladega, AL. Numerous roads flooded, at least 1 rescue. Alert:
  10. How Much Rain Fell

  11. Earlier, peak rain rate of 5.03″/hour **measured** in Opelika, AL! Roads flooded in Talladega. Martin Dam gate ops may be needed. 

  12. The radar-estimated rainfall map below from NWS-Birmingham shows the swath of heaviest rain from the north side of the Birmingham metro into eastern Alabama.  An estimated 4-8 inches of rain fell in this swath.
  13. Screen Shot 2013-05-18 at 8.57.15 AM.png
  14. The infrared satellite photo below shows the cluster of cold cloud tops from the thunderstorm cluster responsible for the Alabama flash flooding.  These clusters of thunderstorms, called “mesoscale convective systems”, are notorious for producing heavy rainfall not only in the Southeast, but also in the Plains and Midwest in late spring and summer.  (Image:  NOAA)