USGS National-Strong Motion Program
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
May 18, 2009, Lennox, California Earthquake (posted 05/22/2009)
Mw 4.7, 05/18/2009, 03:39 UTC, 05/17/2009, 08:39 PM PDT, 33.937 N, 118.345 W, 15.1 km depth, Regional Network ID# ci10410337
Sta Inst Inst State: City; 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
5243 K2 579 CA:Hawthorne;FAA Bldg USGS 33.8954 -118.3768 5.5 212 1 FBA-2g 360 -137 6.07 14.3 4.02 0.402
                  2 FBA-2g UP 53 0.99 2.9 0.42 0.054
                  3 FBA-2g 90 -119 -5.64 15.3 3.23 0.212
5429 Etna 2590 CA:Compton;Cressey Park FS 3 USGS 33.9040 -118.2455 9.9 112 1 EpiSen 90 -157 -6.16 25.8 3.49 0.333
                  2 EpiSen 360 -207 6.84 38.0 2.53 0.183
                  3 EpiSen UP 40 0.80 3.6 0.33 0.026
5411 K2 606 CA:Torrance;Fire Station 1 USGS 33.8307 -118.3289 11.9 173 1 FBA-2g 360 108 4.03 15.5 1.76 0.163
                  2 FBA-2g UP 47 -0.90 3.8 0.53 0.050
                  3 FBA-2g 90 -160 7.30 36.3 1.98 0.186
5477 K2 2508 CA:LA;300 N Los Angeles Federal Bldg USGS 34.0537 -118.2397 16.2 37                
      2nd Floor, S side W corridor           1 EpiSen 128 16.7 -0.55 1.6 0.48 0.074
      2nd Floor, S side W corridor           2 EpiSen 38 10.7 0.59 1.4 0.53 0.088
      2nd Floor, N side W corridor           3 EpiSen 128 12.3 0.56 1.5 0.48 0.070
      Basement, S side W corridor           4 EpiSen 128 12.6 -0.45 1.2 0.52 0.052
      Basement, S side W corridor           5 EpiSen 38 10.3 0.64 1.8 0.59 0.080
      Sub-basement, NW end (inoperative)           6 EpiSen 128          
      1st Floor, SW corner           7 EpiSen 128 -17.7 -0.59 1.8 0.55 0.054
      1st Floor, SW corner           8 EpiSen 38 14.7 0.72 2.0 0.59 0.080
      1st Floor, N end           9 EpiSen 128 9.6 -0.49 1.5 0.49 0.051
      Sub-basement, S end           10 EpiSen 128 -13.2 -0.49 1.3 0.54 0.055
      Sub-basement, S end           11 EpiSen 38 -8.4 0.59 1.7 0.59 0.080
      Sub-basement, S end           12 EpiSen UP 5.6 0.12 0.5 0.13 0.025
5477 K2 2509 CA:LA;300 N Los Angeles Federal Bldg USGS 34.0537 -118.2397 16.2 37                
      5th Floor, S side W corridor           1 EpiSen 38 -7.4 0.65 1.5 0.47 0.164
      5th Floor, S side W corridor           2 EpiSen 128 8.4 0.73 1.7 0.43 0.113
      5th Floor, N side W corridor           3 EpiSen 128 10.7 0.72 1.7 0.42 0.109
      8th Floor, S side W corridor           4 EpiSen 38 7.5 -1.09 1.2 1.13 0.236
      8th Floor, S side W corridor           5 EpiSen 128 8.8 -0.96 1.6 0.93 0.154
      8th Floor, N side W corridor           6 EpiSen 128 -7.4 -0.83 1.4 0.90 0.154
      Penthouse, center W side           7 EpiSen 128 8.7 -1.15 1.7 1.13 0.170
      Penthouse, N end W side           8 EpiSen 128 -9.8 1.03 1.9 1.08 0.167
      no sensor           9              
      Penthouse, S end W side           10 EpiSen 38 8.1 -1.30 1.4 1.31 0.254
      Penthouse, S end W side           11 EpiSen 128 9.3 -1.06 1.9 1.14 0.170
5449 K2 2437 CA:Santa Ana; Federal Bldg USGS 33.7486 -117.8750 48.3 116                
      Basement floor, south           1 EpiSen 90 11.9 -0.83 2.8 0.83 0.057
      Basement floor, south           2 EpiSen 360 -10.8 -0.99 3.6 0.62 0.061
      Basement floor, south           3 EpiSen UP -5.2 0.21 1.4 0.26 0.016
      Basement ceiling, west           4 EpiSen 360 12.0 -1.04 3.9 0.60 0.061
      1st floor ceiling, west           5 EpiSen 360 13.9 -1.03 3.5 0.55 0.062
      3rd floor ceiling, west           6 EpiSen 360 -17.5 -1.33 6.0 0.59 0.075
      Basement ceiling, east           7 EpiSen 360 -13.8 -1.14 4.6 0.61 0.063
      Basement ceiling, east (bad sensor)           8 EpiSen 90          
      1st floor ceiling, east           9 EpiSen 360 17.2 -1.28 5.8 0.60 0.069
      1st floor ceiling, east           10 EpiSen 90 -23.1 -1.44 6.4 0.82 0.068
      3rd floor ceiling, east           11 EpiSen 360 -27.1 1.56 8.9 0.82 0.091
      3rd floor ceiling, east           12 EpiSen 90 32.0 -2.07 10.3 1.89 0.123
5449 K2 2438 CA:Santa Ana; Federal Bldg USGS 33.7486 -117.8750 48.3 116                
      5th floor ceiling, west           1 EpiSen 360 -17.4 1.26 6.9 1.35 0.089
      7th floor ceiling, west           2 EpiSen 360 -8.0 0.90 1.5 2.17 0.102
      8th floor ceiling, west           3 EpiSen 360 -14.2 1.52 4.4 2.45 0.108
      5th floor ceiling, east           4 EpiSen 360 24.2 1.36 8.9 1.50 0.107
      5th floor ceiling, east           5 EpiSen 90 23.2 -1.87 8.4 3.56 0.165
      9th floor ceiling, west           6 EpiSen 360 -23.4 2.07 7.8 2.78 0.124
      7th floor ceiling, east           7 EpiSen 360 -9.8 1.13 2.2 2.21 0.104
      7th floor ceiling, east           8 EpiSen 90 18.9 -2.02 2.6 4.97 0.183
      8th floor ceiling, east           9 EpiSen 360 19.9 1.90 5.6 2.55 0.114
      8th floor ceiling, east           10 EpiSen 90 25.2 -2.95 6.9 5.50 0.193
      9th floor ceiling, east           11 EpiSen 360 31.7 2.60 9.6 2.79 0.130
      9th floor ceiling, east           12 EpiSen 90 39.5 -3.76 10.8 5.98 0.210