Whenever a natural disaster occurs, the WT swoops in as 'organizers' to 1) repair/rebuild Kingdom Halls and 2) to assist any active Witnesses with physical assistance in the short term. Any other assistance to any neighbors, non-witnesses, public spaces or buildings is voluntarily done by the publishers at the scene - on their own nickel.
The Congregations take over after the initial mess is stablized. Meanwhile, the Org. continues to broadcast a need for additional $ donations - that should be sent to Headquarters.
If a publisher or family in a congregation is going through hard times, the elder body might approach others (with good jobs) and ask them to assist.
I had a home burn down once - and all we received from the Congregation was a couple of boxes of books and magazines. The neighbors (and some local churches) gave clothes, toys and money...
ginger