The Impact  Disasters have on An Economy either locally or nationally happens in two stages.The first stage is negative  as Economy comes to a standstill  as Disaster unfolds,The second is the expansion of the economy as rebuilding of homes,Business and In Harvey’s Case Pipelines,Bridges and Roads.Early talk is that up to 20k new workers will be needed to fill these jobs to help Rebuild Houston area.A hit to GDP initially but then a boost to it later.Today Traders are already preparing for the rebuild as materials Sector is the leader within SPX and Lumber futures are higher.Some positive comments regarding Netflix and Strong Biotech stocks  lifts whole Big tech sector and pushed  Nasdaq +60 handles.As rain  finally stops in Houston  attention turns towards rebuild