Whether or not you have a good internal source for information in your business or organization, there are a number of sources you should also consider:

For businesses the community’s hazards and vulnerability analysis. For individual jurisdictions, it is probably useful to consult the analyses done by neighboring jurisdictions and the next higher level of government.

Specialist data available from meteorological and geological organizations.

Local historical data from historical societies, published local histories, and newspaper archives.

The experience of others in your same situation – other businesses in the same or similar industries, other schools, other emergency management agencies.