Oh, that's awesome!!!
Where did they get the surface obs from?
Neat DAWS Map from Hurricane Katrina
I don't know when they produced the chart, but the university servers generally have an archive of surface obs that goes back a week or so.
Weather Graphics also sells weather archive sets of surface and upper air obs:
http://www.weathergraphics.com/archive/
Pat
Weather Graphics also sells weather archive sets of surface and upper air obs:
http://www.weathergraphics.com/archive/
Pat