Storm Data & Storm Events Database
Storm Data publications can be found here: http://www.ncdc.noaa.gov/IPS/sd/sd.html
Note: the data is in .pdf format, and you will need adobe acrobat to view it. Also, some data may not be available yet.
To access records used in the creation of the Storm Data publication, click here: https://www.ncdc.noaa.gov/stormevents/