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• http://www.ncdc.noaa.gov/nexradinv/chooseday.jsp?id=ktlx
• "ordered" data, received email, then retrieved using http://ftp3.ncdc.noaa.gov/pub/has/HAS002419639/
• wget -nH -r --reject "index.html*" -np http://ftp3.ncdc.noaa.gov/pub/has/HAS002419639/
  
• then used wct-viewer to export the level II data as .nc. Only scipy.io can read the netcdf files, netCDF4 could not. Apparently files exported by wct-viewer are netcdf3.
• base scan, KTLX
• May 24 2011 tornado outbreak
• blink between reflectivity and radial velocity
• Python with PIL and numpy: nexrad.py.