Despite the dreary weather, Washington Geologic Survey’s hazards geologists have been hard at work in the field. They are busy collecting seismic survey measurements and continually adding to a data catalog of shear wave velocity profiles throughout Washington State. Shear wave velocity is an important factor in earthquake-resistant design as designated by the International Building Code (IBC). These seismic site characterizations are part of a USGS-funded series of investigations and reports intended to provide geologic data and information essential to mitigate earthquake losses. Our previous reports from 2009-2011 can be obtained by visiting the USGS Earthquakes Hazards Program External Research Support site.