Here is a handful of them.
Interesting emergency management / preparedness blog with very different types of posts than others. Not updated recently, but updates seem to go in spurts.
Discusses the use of tech during crisis situations. Most often social media.
Discussions of crisis and emergency management
A very renowned emergency management blog, currently on haitus due to illness.
Homeland security blog. Good information here, but also more politically than specific action focused.
Well detailed emergency management blog from Met College NY. Really good stuff here.
An awesome blog of all things landslides. Frequently updated, topical and well written.
Very thoughtful crisis / emergency management / preparation blog. Research, thoughts, and conference notes are all here. Good stuff
Emergency management blog specifically focused at CounterTerrorism efforts. Group blog.
Awesome emergency prep and situations blog by author of "The Unthinkable"
Eric Holdeman's Emerg. Mgt and Prep blog (he's in Puyallup)
Rarely updated blog on crisis informatics from a research / university perspective
A wiki of disaster preparedness resources.
Survivalist blog / covers some emergency prep issues.