GIS Applications for Tornado Damage Visualization

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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.

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GIS Applications for Tornado Damage Visualization

  1. 1. Tornado Damage Assessment & Visualization<br />Good Friday Tornado – Murfreesboro/Rutherford County, TN<br />David Speight, True North Geographic Technologies<br />
  2. 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<br />
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  5. 5. Airport<br />EOC<br />MTSU<br />911<br />Special Ops<br />Courthouse (OIT)<br />ArcGIS Server<br />ArcSDE<br />Image Server<br />Initial Estimated Damage Path<br />
  6. 6. GIS Response Timeline<br />Friday Afternoon (April 10, 2009)<br />Prep for damage assessment data collection during the initial response phase<br />Friday Evening – Sunday Evening<br />Perform data entry for initial damage reports<br />Create mapping tools for the EOC<br />Sunday Morning<br />Imagery for damage path acquired<br />Monday – Friday<br />Continue data entry/scrubbing for damage reports<br />Monday Afternoon<br />Receive new imagery; publish using AGS/Image Server<br />Locate unassessed damage using new imagery<br />Thursday Afternoon<br />Roll out public information website <br />
  7. 7. Damage Assessment Site<br />Emergency Operations Center<br />ArcGIS Server / Flex Viewer<br />
  8. 8. Damage Assessment Site<br />Provide access to landbase & cadastral<br />Monitor progress of damage assessment<br />
  9. 9. Damage Assessment Site<br />Provide access to landbase & cadastral<br />Monitor progress of damage assessment<br />
  10. 10. Damage Assessment Site<br />Define damage path more precisely<br />Provide more accurate information to media<br />
  11. 11. Public Information Site<br />Tools for public/media access<br />Damage visualization<br />
  12. 12. Public Information Site<br />Used Flickr for geotagging photos<br />
  13. 13. Public Information Site<br />Imagery tells the story<br />
  14. 14. Public Information Site<br />Property damage general Info<br />Minimize public presence in damage area <br />
  15. 15. What Worked<br />Data collection prep<br />GIS manager & techs @ Courthouse<br />GIS public safety tech @ EOC<br />Editing via remote desktop to Courthouse<br />ArcSDE database for multi-editor feature classes<br />ArcGIS Server/Image Server<br />Able to construct map services & reuse for multiple applications<br />Able to use existing map services from other agencies<br />Able to quickly turn around new imagery & incorporate into web application<br />Flex viewer <br />Quick, easy access to essential data<br />Provided EMA staff with up-to-the-minute progress info on damage estimates<br />Flex API<br />Stood up public facing web site within a week of event<br />Powerful visualization tools<br />
  16. 16. What Can Be Improved (technically) ?<br />Data collection prep<br />Emergency response data model<br />Maps – editing/publishing <br />Web dashboards<br />Have a plan for document/photo management<br />Data collection<br />Eliminate paper & manual data entry<br />Multiple mobile options<br />Use cameras with geotagging capability<br />Data integration<br />Prepare existing systems to share data easily<br />GeoRSS, XML, WMS, KML, web services <br />

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