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

    49.6 km  SW of Portland, OR. Clackamas Highway Bridge (ODOT)
    49.6 km  SW of Portland, OR. Terwilliger Interchange (ODOT)
    49.6 km  SW of Portland, OR. Stark St&Water Ave, Morrison Ramp (ODOT)
    51.2 km SSW of KEEL -  Keeler
    51.3 km SSW of Portland, OR. VA Hospital, Steam Plant (USGS)
    53.5 km SSW of Portland, OR. State Univ, Bsmt. Cramer Hall (USGS)
    53.6 km SSW of CSO  -  Canyon (USGS, OR)
    54.2 km SSW of HAO  -  Harrison (USGS, OR)
    61.2 km  SW of RBO  -  Rocky Butte (USGS, OR)
    66.7 km SSW of Vancouver, WA. VA Hospital Bldg. #4 (VA)
    69.0 km SSW of ROSS -  Ross
    74.9 km  NW of Detroit Dam, OR. (ACOE)
    81.8 km NNW of Green Peter Dam, OR. (ACOE)
   112.3 km   S of ALST -  Alston
   117.4 km NNW of Blue River Dam, OR. (ACOE)
   125.3 km NNW of Cougar Dam, OR. (ACOE)
   133.8 km   N of Lowell, OR. Lookout Point Dam (ACOE)
   144.4 km SSW of Toutle River Dam, WA. (ACOE)
   159.0 km WSW of The Dalles Dam, OR. (ACOE)
   161.4 km NNW of Oakridge, OR. Hills Creek Dam (ACOE)