NationalIncidentMap.com has, using a mix of feeds and twitter posts from volunteers, created constantly updated maps, focused on several types of risk with a time-frame of the previous 24 hours. It’s not exhaustive, but it’s a good demonstration of what’s possible with crowdsourcing and aggregation. We’re not sure this could be comprehensive and complete without at least some full-time staff – but it’s still useful. There are also links to the same data in list form, and each incident market includes some data about the incident which it represents.

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National Incident Map is also looking for more volunteers; their pitch, from their welcome page, appears below:

This is a Free Incident Notification System. The incident are gathered from a variety of sources, including Twitter, National Weather Service, FAA and volunteers who listen to police radios and dispatch what the hear through our system.

Some of the incident types we send out include:

• Fire calls of all severity
• Police calls including robberies & pursuits
• Accidents and Traffic Alerts
• Severe Weather Watches &  Warnings
• Current Weather conditions from major cities, 4 times a day.
• General Airport Delays as reported by the FAA

The accuracy of the information can not be guaranteed, but we do the best to make sure our sources are reliable. If you are interested in suppling a Twitter Feed or dispatching into our system, please email us at map@nationalincidentmap.com