Currently on an experimental basis, the National Weather Service in Birmingham is offering GIS data from storm surveys following severe weather events. These data offer survey information from tornado tracks that are found by damage assessment teams in the field. The links below contain information for 55 tornadoes that have been surveyed across the State of Alabama that occurred during the entire calendar year of 2012. Most information was produced and extracted from the National Weather Service Damage Assessment Toolkit, which has been developed by National Weather Service Meteorologists to modernize storm survey information into a geospatial format for the general public and GIS analysts. The information can be passed along to decision makers and the emergency management community after storm surveys have been completed. The Damage Assessment Toolkit will continue to be devloped and improved, and well on its way to being implemented throughout the agency.
Select Tornado Swaths - (Updated 6/22/2013) Zipped folder contains polygon shapefiles of individual tornado tracks and estimated damage swaths, as well as an all inclusive shapefile that has all path information merged together. Shapefile projections are in Universal Transverse Mercator Zone 16N.
Select Survey Points - (Updated 6/22/2013) Zipped folder contains point shapefile locations within specific tornado paths that include detailed survey information gathered from assessment teams in the field. The attribute information includes: Event Date, Survey Date, Damage Indicator, Degree of Damage, EF-Rating at the point location, Wind Speed, and the Tornado associated with the survey point. Shapefile projections are in Universal Transverse Mercator Zone 16N.
All Tornado Paths - (Updated 6/22/2013) Zipped folder contains line shapefiles of all 55 tornado tracks across the State of Alabama for 2012. Attribute information includes: Tornado Name, EF-Scale, Peak Wind, Counties affected, Start Time, Beginning and Ending Latitudes and Longitudes, End Time, Maximum width in miles and yards, Order Number of the tornado segement, and Tornado Number according to the statewide tornado map. Shapefile projections are in Universal Transverse Mercator Zone 16N.
Attention GIS Analysts Using ArcGIS: Please view the metadata within ArcCatalog to view a complete description of shapefile information.
Google Earth KMZ Files:
Tornado Survey Information KMZ (Updated 6/22/2013) Google Earth KMZ contains all the detailed storm survey information gathered for the 55 tornadoes in the State of Alabama. In select locations, damage photographs taken by assessment teams can also be viewed. Be advised that this information is still deemed as experimental. Most information was extracted from the National Weather Service Damage Assessment Toolkit.