NOAA's National Centers for Environmental Information
For the month of August there were no tornado-related fatalities reported in the U.S. The January-August fatality total stands at 121.
Important: The graph above-left represents the final number of tornadoes from January-June and preliminary tornado reports from July-August 2008. Final numbers from July and August are not yet available and may reflect a significant change, as represented by the error-bar above. Data current as of September 8, 2008.
The month of August brought more severe weather to the U.S. as 141 preliminary reports of tornadoes were received. Ten tornadoes were reported across Illinois and Indiana from August 4-5. A number of tornadoes were also reported throughout the Southeast during the third and fourth weeks of August. These tornadoes were associated with Tropical Storm Fay which first made landfall in Florida on August 18. The most tornado reports occurred on August 26 as the remnants of Tropical Storm Fay moved across the Southeast. Tornado counts for August 2008 have yet to be finalized.
More information on severe weather can also be found on NCDC's Hazards page.