A warehouse is a storage and coordination site where incoming goods are received, sorted, held, and redistributed during disaster response [@wachtendorf2010; @watters2014].

Within emergent disaster response, the term matters because donated and converged materials become useful only if there is a place where they can be made legible and movable. Warehouses are therefore not merely storage containers. They are operational sites where classification, prioritization, and routing occur.

A warehouse can be temporary, improvised, or embedded inside a larger mutual aid hub. What defines it is its function in the logistics chain, not whether it looks like a formal facility.