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

    23.0 km SSW of Portland, OR. Clackamas Highway Bridge (ODOT)
    23.0 km SSW of Portland, OR. Terwilliger Interchange (ODOT)
    23.0 km SSW of Portland, OR. Stark St&Water Ave, Morrison Ramp (ODOT)
    26.8 km   S of Portland, OR. VA Hospital, Steam Plant (USGS)
    29.1 km   S of HAO  -  Harrison (USGS, OR)
    29.2 km   S of Portland, OR. State Univ, Bsmt. Cramer Hall (USGS)
    29.6 km   S of CSO  -  Canyon (USGS, OR)
    34.6 km SSW of RBO  -  Rocky Butte (USGS, OR)
    35.6 km SSE of KEEL -  Keeler
    43.4 km   S of Vancouver, WA. VA Hospital Bldg. #4 (VA)
    45.9 km   S of ROSS -  Ross
    70.5 km NNW of Detroit Dam, OR. (ACOE)
    89.8 km   N of Green Peter Dam, OR. (ACOE)
    98.2 km SSE of ALST -  Alston
   123.3 km   S of Toutle River Dam, WA. (ACOE)
   124.5 km NNW of Blue River Dam, OR. (ACOE)
   130.9 km WSW of The Dalles Dam, OR. (ACOE)
   131.4 km NNW of Cougar Dam, OR. (ACOE)
   144.7 km   S of Mossy Rock Dam, WA., Cowlitz R. (ACOE)
   148.9 km   N of Lowell, OR. Lookout Point Dam (ACOE)