I love that there's always something new in resources and enhancements for any lesson that you create! In the Rural STEM GIS lesson collection (http://www.isat.jmu.edu/stem/curriculum.html) there are activities related to disasters. FEMA has created a web experience for kids (Adults and Businesses at www.ready.gov) that sends them on an adventure. http://www.ready.gov/kids/index.html
There are nice ancillary materials for Geography and Language Arts as well! http://www.listo.gov/america/_downloads/inschool_plan.pdf