A “threat map” details the hazards in your area. It helps choose evacuation routes and a rendezvous point.
A “threat map” details the hazards in your area. It helps choose evacuation routes and a rendezvous point.

The explosion at a fertilizer plant in Texas this week killed several people and injured many more. It brought to mind the “threat map” disaster expert Paul Purcell details in his book, Disaster Prep 101. (Look for a full review of the book soon.)

A threat map is something you create at home. It details potentially hazardous sites, like a fertilizer plant, should a disaster strike. Using readily available maps at places like Google Maps and Mapquest, the idea is to best assess where not to travel during an evacuation.

The following lists are from Disaster Prep 101. This is just a brief overview. The book contains a lot more detail on these subjects.

Maps to Gather to Create Your Threat Map

Street maps

Aerial photos of your workplace, children’s schools and your home

A city map

A county map

A state map

A national atlas

Start Making Your Threat Map

On each of the maps, mark the following things:

Potential targets of terrorist attacks

Prevailing wind directions – You’ll need this determine where to go if toxic chemicals are in the air. In the case of the fertilizer plant explosion, it would be a good idea to stay upwind.

Chemical, hazardous materials and nuclear sites

High-crime areas

Transportation bottlenecks

Flood plains

Any other hazard relevant to your area


Keep the Lights On

From rolling blackouts to hurricanes, floods to tornadoes, power can go out at a moment’s notice. If the grid fails, the PowerPot will keep you charging! The PowerPot thermoelectric generator converts any heat source directly into power that charges your USB handheld devices. Get Yours Now