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

   143.5 km   W of Green Peter Dam, OR. (ACOE)
   148.9 km  SW of KEEL -  Keeler
   149.5 km  NW of Lowell, OR. Lookout Point Dam (ACOE)
   157.8 km  SW of Portland, OR. VA Hospital, Steam Plant (USGS)
   158.1 km WSW of Portland, OR. Clackamas Highway Bridge (ODOT)
   158.1 km WSW of Portland, OR. Terwilliger Interchange (ODOT)
   158.1 km WSW of Portland, OR. Stark St&Water Ave, Morrison Ramp (ODOT)
   159.2 km  SW of CSO  -  Canyon (USGS, OR)
   159.3 km  SW of Portland, OR. State Univ, Bsmt. Cramer Hall (USGS)
   160.8 km  SW of HAO  -  Harrison (USGS, OR)
   163.3 km   W of Detroit Dam, OR. (ACOE)
   166.9 km WNW of Blue River Dam, OR. (ACOE)
   168.7 km  SW of RBO  -  Rocky Butte (USGS, OR)
   169.4 km  SW of Vancouver, WA. VA Hospital Bldg. #4 (VA)
   171.1 km  SW of ROSS -  Ross
   175.2 km WNW of Cougar Dam, OR. (ACOE)
   183.3 km  NW of Oakridge, OR. Hills Creek Dam (ACOE)
   189.6 km SSW of ALST -  Alston
   232.9 km  SW of Toutle River Dam, WA. (ACOE)
   255.2 km  SW of Mossy Rock Dam, WA., Cowlitz R. (ACOE)