USGS Community Internet Intensity Map for the Kīholo Bay earthquake...

A Community Internet Intensity Map (CIIM) takes advantage of the Internet to generate initial intensity maps almost instantly. Data are received through a "Did You Feel It?" questionnaire on the Internet answered by people who actually experienced the earthquake. A CIIM summarizes the responses, and an intensity number is assigned to each ZIP code for which a CIIM questionnaire is completed. The intensity values in each ZIP-code area are averaged, and the map is updated as additional data are received. ZIP-code areas for which data have been received are color-coded according to the intensity scale on the map; other areas are gray. A CIIM is automatically made after each widely felt earthquake in the United States. The system can start receiving responses within a few minutes after the earthquake. Internet users can also enter data for U.S. earthquakes they have experienced in the past.