USGS National-Strong Motion Program
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
June 28, 1991, Sierra Madre, California Earthquake (posted 04/02/2003)
Mw 5.6, 06/28/1991, 14:43 UTC, 06/28/1991, 07:43 AM PDT , 34.262 N, 118.002 W, 11.0 km depth
Sta Inst Inst Recorder Location Owner Lat Lon Dist Az Ch Sensor Orient PGA PGV PSA at:
Code type S/N     deg deg km deg No type deg cm/s/s cm/s 0.3 s 1.0 s 3.0 s
   
5296 SMA-1 4734 CA: Pasadena; USGS/NSMP Office USGS 34.1367 -118.1285 18.1 220 1 SMA-1 360 273.9 -18.6 63.6 16.20 1.430
                  2 SMA-1 UP -141.5 9.0 30.2 6.76 0.392
                  3 SMA-1 270 -172.2 -13.9 70.1 8.26 0.989
482 CRA-1 316 CA: Alhambra; LA County Pub Wrks USGS 34.0849 -118.1500 23.9 215                
      12th Floor, Center           1 CRA-1 360 -118.1 18.8 36.3 14.40 6.940
      12th Floor, Center           2 CRA-1 90 144.7 -10.9 37.8 13.60 2.190
      12th Floor, N end           3 CRA-1 90 132.8 -9.8 34.6 13.10 2.230
      6th Floor, Center           4 CRA-1 90 166.3 11.4 67.0 14.50 1.410
      6th Floor, Center           5 CRA-1 360 -128.9 -11.0 48.2 16.00 3.790
      6th Floor, N end           6 CRA-1 90 -124.6 9.7 50.1 13.40 1.180
      2nd Floor, Center           7 CRA-1 90 269.1 15.8 98.6 9.49 0.666
      2nd Floor, Center           8 CRA-1 360 209.2 -10.7 73.1 11.50 1.360
      2nd Floor, N end           9 CRA-1 90 247.7 14.6 87.2 9.38 0.721
      Basement, Center           10 CRA-1 360 -108.0 7.1 33.0 10.30 1.580
      Basement, Center           11 CRA-1 UP -47.8 -2.7 10.6 3.44 0.579
      Basement, Center           12 CRA-1 90 125.0 9.4 45.3 8.34 0.703
5233     CA: Los Angeles; 1100 Wilshire USGS 34.052 -118.260 33.3 226                
  CRA-1 270 12th Floor, N           1 CRA-1 298 -65.4 4.4 12.0 5.64 1.120
  CRA-1 270 13th Floor, N           2 CRA-1 208 118.7 -9.5 24.1 8.42 1.340
  CRA-1 270 12th Floor, S           3 CRA-1 208 50.2 4.8 19.0 3.92 0.777
  CRA-1 270 13th Floor, N           4 CRA-1 298 -65.3 4.0 13.4 5.07 0.997
  CRA-1 270 13th Floor, N           5 CRA-1 208 133.7 -9.7 28.7 8.45 1.200
  CRA-1 270 13th Floor, S           6 CRA-1 208 48.0 4.7 20.5 3.33 0.875
  CRA-1 270 32nd Floor, N           7 CRA-1 298 -62.7 8.9 10.7 9.30 2.440
  CRA-1 270 32nd Floor, N           8 CRA-1 208 111.4 -15.3 28.7 19.90 2.510
  CRA-1 270 32nd Floor, S           9 CRA-1 208 41.7 4.9 7.3 7.69 2.350
  CRA-1 270 Gnd Floor, N           10 CRA-1 298 68.4 4.8 22.9 3.48 0.484
  CRA-1 270 Gnd Floor, N           11 CRA-1 208 58.8 -3.7 10.2 4.69 0.475
  CRA-1 270 Gnd Floor, S           12 CRA-1 208 69.9 4.7 16.5 3.51 0.476
  SMA-1 6063 Basement, NW           1 SMA-1 298 -43.8 3.2 9.3 4.48 0.486
  SMA-1 6063 Basement, NW           2 SMA-1 UP -19.9 -1.8 5.3 2.20 0.628
  SMA-1 6063 Basement, NW           3 SMA-1 208 50.5 3.5 17.0 3.21 0.634
  SMA-1 6064 Basement, NE           1 SMA-1 298 65.3 -3.5 8.0 4.82 0.556
  SMA-1 6064 Basement, NE           2 SMA-1 UP 31.9 -2.0 11.3 2.07 0.569
  SMA-1 6064 Basement, NE           3 SMA-1 208 51.0 3.7 12.9 3.55 0.543
  SMA-1 6065 Basement, SE           1 SMA-1 298 57.4 -3.6 6.5 4.91 0.595
  SMA-1 6065 Basement, SE           2 SMA-1 UP 27.4 -1.8 6.1 2.07 0.614
  SMA-1 6065 Basement, SE           3 SMA-1 208 42.4 2.8 9.9 2.99 0.462