Afterslip for 2014 South Napa Earthquake (IMAGE) Seismological Society of America Caption These two photos showing evidence of afterslip were taken where the West Napa fault crosses Highway 12 at Cuttings Wharf Road. The first offset measurement was taken the day of the earthquake -- about 6 cm (2 in) of right-lateral offset. The following day (almost 24 hrs later), the same feature had 11 cm (4 in) of offset. Credit USGS/ (Photos courtesy of Tim Dawson, California Geological Survey) Usage Restrictions Please use full credit information with photo License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.