From the Augusta newspaper, see this article titled EM Urges Churches Develop Disaster Preparations. The exemplary effort cited was that by the Church of Jesus Christ of Latter Day Saints.
This past week I spent time in Montgomery County, MD where one of the speakers was a member of that church in the county. He too had an amazing stock of resources, which he generously shared. Mr. M. Leafty can be reached at email@example.com if you want more details.
A Personal Note: I would like to see people use the more general phrase “houses of Worship,” rather than “churches,” since the latter does not include synagogues, mosques and other houses of worship.