The US Army Corps of Engineers, (USACE) provides predictive models of commodity needs based on hurricane winds, track of the storm, population density, and estimated number of residences without power. These models predict people "in need", this fact is very important for determining amount of commodities that may be required, however, this fact is useless if commodities can't be placed into the victim's hands in a timely manner. The 2004 hurricane season proved that the ability to distribute commodities to the public is the controlling factor to determine supply, not the people "in need" as the models show. To successfully accomplish the commodity distribution mission, we must literally, "begin with the end in mind". The successful execution of a distribution plan is essential for success. The plan must have pre-determined locations of distribution points, layout plans for each point, and include equipment and manpower requirements.
The link listed below will give you more details on the Commodities.

Local Distribution Point Planning for Commodities

Distribution Point Brief 06-07-05

Commodities model PRE-EVENT

USACE P0ST-EVENT Commodities Ordering Model