USGS National-Strong Motion Project
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
November 09, 2007, Ferndale, CA Earthquake (posted 11/16/2007; updated 03/19/2008)
Mw 4.1, 11/09/2007, 03:37 UTC, 11/08/2007, 07:37 PM PST, 40.540 N, 124.403 W, 23.6 km depth, Regional Network ID# nc40205250
Sta Inst Inst State: City; Recorder Location Owner Lat Lon Dist Az Ch Sensor Orient PGA PGV PSA at:
No type S/N     deg deg km deg No type deg cm/s/s cm/s 0.3 s 1.0 s 3.0 s
1725 Etna 2039 CA:Ferndale; Centerville B&B USGS 40.544 -124.354 4.2 84 1 EpiSen 90 -7.6 -0.250 1.03 0.120 0.0117
                  2 EpiSen 360 14.5 0.465 1.55 0.126 0.0130
                  3 EpiSen UP -6.5 -0.130 0.54 0.059 0.0038
1023 Etna 1990 CA:Ferndale; Fire Station USGS 40.57616 -124.26367 12.5 71 1 EpiSen 90 25.1 -0.866 2.99 0.207 0.0172
                  2 EpiSen 360 24.5 -0.741 3.83 0.411 0.0346
                  3 EpiSen UP -5.8 0.238 1.30 0.111 0.0060
1586 Etna 1993 CA:Loleta; Fire Station USGS 40.64420 -124.22071 19.3 53 1 EpiSen 90 13.8 -0.530 2.13 0.265 0.0619
                  2 EpiSen 360 -16.8 -0.440 3.01 0.153 0.0158
                  3 EpiSen UP -7.2 0.154 0.78 0.079 0.0100
1746 Etna 2011 CA:Fortuna; Fire Station USGS 40.58908 -124.14790 23.9 77 1 EpiSen 90 13.8 -0.577 2.19 0.197 0.0192
                  2 EpiSen 360 10.6 0.485 1.47 0.207 0.0190
                  3 EpiSen UP -4.0 -0.067 0.29 0.040 0.0021
1581 Etna 2021 CA:Eureka; South Bay School USGS 40.73501 -124.20763 27.3 37 1 EpiSen 270 -12.1 0.372 1.55 0.091 0.0115
                  2 EpiSen 180 -9.3 -0.201 0.46 0.051 0.0036
                  3 EpiSen UP 3.4 0.060 0.41 0.027 0.0027