Distance and direction of nearest 20 strong motion seismographs
(accelerometers) from earthquake. Such seismographs are of interest to 
structural engineers (data from ~seis/sites.dat).

     Earthquake is

    56.3 km SSE of The Dalles Dam, OR. (ACOE)
    67.9 km SSW of John Day Dam, OR. (ACOE)
   111.5 km WSW of Willow Creek Dam, OR.(ACOE)
   114.0 km ENE of Detroit Dam, OR. (ACOE)
   136.1 km ESE of RBO  -  Rocky Butte (USGS, OR)
   138.9 km ESE of Portland, OR. Clackamas Highway Bridge (ODOT)
   138.9 km ESE of Portland, OR. Terwilliger Interchange (ODOT)
   138.9 km ESE of Portland, OR. Stark St&Water Ave, Morrison Ramp (ODOT)
   141.9 km ESE of HAO  -  Harrison (USGS, OR)
   143.5 km ESE of Portland, OR. VA Hospital, Steam Plant (USGS)
   144.0 km ESE of Portland, OR. State Univ, Bsmt. Cramer Hall (USGS)
   144.6 km ESE of CSO  -  Canyon (USGS, OR)
   146.8 km ENE of Green Peter Dam, OR. (ACOE)
   147.0 km ESE of Vancouver, WA. VA Hospital Bldg. #4 (VA)
   147.7 km ESE of ROSS -  Ross
   153.0 km  NE of Cougar Dam, OR. (ACOE)
   154.1 km  NE of Blue River Dam, OR. (ACOE)
   155.6 km  SW of McNary Dam, OR. (ACOE)
   161.1 km ESE of KEEL -  Keeler
   186.2 km  SE of Toutle River Dam, WA. (ACOE)