ESRI, 2007. Adapted with permission.
Hurricanes are among the most common and most destructive types of natural hazards on Earth. Because they occur across space and time, hurricanes can be better understood using maps, particularly digital maps within a Geographic Information Systems (GIS) environment. GIS allows you to use maps as analytical tools—not maps that someone else has made—but using your own maps to make decisions.
- A computer with Internet access
1. The National Oceanic and Atmospheric Administration provides a database historical hurricane tracks. Access https://coast.noaa.gov/hurricanes/ and search hurricanes by year.
2. While the map works well for displaying hurricane data by year, you may wish to download a spreadsheet to answer question 4. You can download a large spreadsheet containing all the data you will reuqire here https://www.ncdc.noaa.gov/ibtracs/index.php?name=wmo-data.
3. Discuss: Why do hurricanes move in the direction that they do? Which hurricanes don’t fit the pattern?
4. Map hurricanes from some different decades. Discuss: Are hurricanes becoming more frequent with each passing decade? How does the wind
speed change as each hurricane moves across the ocean and across land?
5. For the next part of this activity, download ArcExplorer Java Edition for Education (AEJEE), from http://www.esri.com/software/arcgis/explorer/arcexplorer.
6. Data from National Atlas are bundled with a more detailed version of this North Atlantic hurricane activity, freely available on the ESRI ArcLessons
library at http://www.esri.com/arclessons. Search on “Hurricanes” or the ID of 299.
7. After accessing AEJEE, select the Add Data button to add the hurricanes, boundaries, and cities map layers. Using Tools, then Query Builder, select Hurricane Andrew (Name=’Andrew’). Describe the path of Hurricane Andrew. How long was its path, and how many days did this hurricane last?
8. Study the Wind_ MPH and Pressure fields. Discuss: What is the relationship between wind speed and pressure? Why? What was the wind
speed and pressure when Andrew became a hurricane?