USGS National-Strong Motion Program
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
February 04, 2010, Petrolia, California Earthquake (posted 02/08/2010)
Mw 5.9, 02/04/2010, 20:20 UTC, 02/04/2010, 12:20 PM PST, 40.412 N, 124.961 W, 23.6 km depth, Regional Network ID# nc71348851
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
1725	Etna	2039	CA:Ferndale;Lost Coast Ranch	USGS	40.5441	-124.3544	53.5	74	1	EpiSen	90	-36.2	2.34	7.96	2.36	0.358
									2	EpiSen	360	16.8	-1.69	4.68	1.91	0.237
									3	EpiSen	UP	16.3	-0.78	3.48	1.04	0.185
1584	Etna	2003	CA:Ferndale;Bunker Hill, FAA	USGS	40.4980	-124.2950	57.3	80	1	EpiSen	90	10.7	-0.94	2.76	1.26	0.302
									2	EpiSen	360	-15.8	-1.13	2.71	1.07	0.195
									3	EpiSen	UP	-21.5	-0.73	0.91	0.59	0.138
1023	Etna	1990	CA:Ferndale;Fire Station	USGS	40.5762	-124.2637	61.9	73	1	EpiSen	90	39.7	-2.38	8.20	3.04	0.398
									2	EpiSen	360	45.2	-1.65	4.63	1.76	0.363
									3	EpiSen	UP	14.6	0.71	2.18	0.73	0.113
1586	Etna	1993	CA:Loleta;Fire Station	USGS	40.6442	-124.2207	67.8	67	1	EpiSen	90	-22.2	1.33	2.83	1.08	0.294
									2	EpiSen	360	22.9	-1.66	2.46	1.57	0.324
									3	EpiSen	UP	-14.9	0.55	1.72	0.50	0.159
1746	Etna	2011	CA:Fortuna;Fire Station	USGS	40.5891	-124.1479	71.7	74	1	EpiSen	90	36.4	-1.53	7.08	1.21	0.278
									2	EpiSen	360	-53.1	2.00	5.60	1.36	0.196
									3	EpiSen	UP	-13.9	0.63	2.09	0.70	0.109
1581	Etna	2021	CA:Eureka;South Bay School	USGS	40.7350	-124.2076	73.2	60	1	EpiSen	90	-43.0	-2.59	9.12	2.11	0.244
									2	EpiSen	360	40.2	-2.92	12.00	2.41	0.293
									3	EpiSen	UP	-14.9	0.64	5.31	0.61	0.151
1580	Etna	2023	CA:Arcata;Humboldt State Univ	USGS	40.8741	-124.0764	90.7	55	1	EpiSen	90	16.2	-0.71	4.72	0.52	0.105
									2	EpiSen	360	13.9	-0.74	5.03	0.22	0.071
									3	EpiSen	UP	-4.0	-0.20	0.88	0.22	0.047