Chattahoochee National Forest

27 April 2011 Tornado Damage

The colors below show the estimated EF level based on the most probable wind speed obtained by noting the observed number of trees down in 10000 m2 plots. The wind speed estimates are derived from best-fit Gaussian probability distribution functions found through resampling trees and applying a wind—tree model. Subplots may not align perfectly with the damage shown in the satellite imagery due to small georeferencing problems in the original aerial imagery. More details and features will appear later (including the ability to turn off certain EF levels in the map). These results are preliminary and may change.