Direct download:
Contours of macroseismic intensity http://earthquake.usgs.gov/realtime/product/shakemap/us20002926/us/1429998292675/download/cont_mi.json
Contours of peak ground acceleration (%g). http://earthquake.usgs.gov/realtime/product/shakemap/us20002926/us/1429998292675/download/cont_pga.json
Transformation from shape to 3D done with shp2stl
3D model at sketchfab
https://sketchfab.com/models/e3ab36b16339462eb8d4c55d736f0607