I cannot comment on what businesses are affected by this event. However, a few thoughts come to mind on how GIS could be used.
- detemrining utility corridors
- extent and area calculations
- transportation systems and routing
- economic impacts
- sociological impacts
- inner city climate/ noise
There are probably many others but these are just a few which come to mind immediately.
Good luck....happy GIS'ing.
Integral GIS Inc
Spandauer str 4, A1002