Presented to the Hamilton County GIS User Group meeting on 01.26.2010. Overview of ArcGIS Server Flex applications built to assist in damage assessment and visualization after an EF-4 tornado in Murfreesboro, Tennessee.

1. Tornado Damage Assessment & Visualization Good Friday Tornado – Murfreesboro/Rutherford County, TN David Speight, True North Geographic Technologies

2. FINAL SUMMARY (TIMES BASED ON RADAR)...STRENGTH...EF-4MAXIMUM WINDS...170 MPHPATH LENGTH...23.25 MILESWIDTH...MAXIMUM 750 YARDSTOUCHDOWN TIME...1219 PMTORNADO END TIME...1255 PM

5. Airport EOC MTSU 911 Special Ops Courthouse (OIT) ArcGIS Server ArcSDE Image Server Initial Estimated Damage Path

6. GIS Response Timeline Friday Afternoon (April 10, 2009) Prep for damage assessment data collection during the initial response phase Friday Evening – Sunday Evening Perform data entry for initial damage reports Create mapping tools for the EOC Sunday Morning Imagery for damage path acquired Monday – Friday Continue data entry/scrubbing for damage reports Monday Afternoon Receive new imagery; publish using AGS/Image Server Locate unassessed damage using new imagery Thursday Afternoon Roll out public information website

7. Damage Assessment Site Emergency Operations Center ArcGIS Server / Flex Viewer

8. Damage Assessment Site Provide access to landbase & cadastral Monitor progress of damage assessment

9. Damage Assessment Site Provide access to landbase & cadastral Monitor progress of damage assessment

10. Damage Assessment Site Define damage path more precisely Provide more accurate information to media

11. Public Information Site Tools for public/media access Damage visualization

12. Public Information Site Used Flickr for geotagging photos

13. Public Information Site Imagery tells the story

14. Public Information Site Property damage general Info Minimize public presence in damage area

15. What Worked Data collection prep GIS manager & techs @ Courthouse GIS public safety tech @ EOC Editing via remote desktop to Courthouse ArcSDE database for multi-editor feature classes ArcGIS Server/Image Server Able to construct map services & reuse for multiple applications Able to use existing map services from other agencies Able to quickly turn around new imagery & incorporate into web application Flex viewer Quick, easy access to essential data Provided EMA staff with up-to-the-minute progress info on damage estimates Flex API Stood up public facing web site within a week of event Powerful visualization tools

16. What Can Be Improved (technically) ? Data collection prep Emergency response data model Maps – editing/publishing Web dashboards Have a plan for document/photo management Data collection Eliminate paper & manual data entry Multiple mobile options Use cameras with geotagging capability Data integration Prepare existing systems to share data easily GeoRSS, XML, WMS, KML, web services