USGS National-Strong Motion Program
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
February 22, 2003, Big Bear City, California Earthquake (posted 02/28/2003; updated 07/25/2003)
ML 5.4, 02/22/2003, 12:19 UTC, 02/22/2003, 04:19 AM PST , 34.310 N, 116.848 W, 1.2 km depth
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
5075	Etna	1436	CA: Forest Falls; Post Office	USGS	34.088	-116.919	25.5	195	1	FBA-2g	180	-36.8	1.1	4.75	0.589	0.0361
									2	FBA-2g	UP	21.0	-0.6	3.01	0.284	0.0536
									3	FBA-2g	270	40.3	-1.2	4.74	0.748	0.0709
5076	Etna	1434	CA: Mentone; Mill Cr Ranger Sta	USGS	34.079	-117.045	31.4	215	1	FBA-2g	180	43.1	-1.2	6.05	0.609	0.0681
									2	FBA-2g	UP	-20.3	-0.7	3.13	0.597	0.0368
									3	FBA-2g	270	25.9	-1.0	3.81	1.080	0.1270
5300	MtWh	194	CA: Redlands; Seven Oaks Dam	USGS	34.117	-117.098	31.4	227
			Tunnel chamber						1	EpiSen	90	5.9	0.4	1.10	0.583	0.0767
			Tunnel chamber						2	EpiSen	360	6.0	-0.2	0.91	0.332	0.0342
			Tunnel chamber						3	EpiSen	UP	-3.8	0.2	0.72	0.165	0.0170
			Right Abutment						4	EpiSen	90	11.1	0.3	0.86	0.469	0.0840
			Right Abutment						5	EpiSen	360	12.8	0.5	2.33	0.537	0.0589
			Right Abutment						6	EpiSen	UP	-8.0	0.3	1.98	0.273	0.0181
			Right crest						7	EpiSen	90	29.0	-1.4	8.65	1.330	0.0920
			Right crest						8	EpiSen	360	-26.6	-1.7	5.02	1.410	0.0851
			Right crest						9	EpiSen	UP	15.2	-0.5	3.45	0.355	0.0222
			Center crest, surface						10	EpiSen	90	-35.1	1.5	11.70	1.560	0.0821
			Center crest, surface						11	EpiSen	360	28.7	2.3	11.40	2.830	0.1300
			Center crest, surface						12	EpiSen	UP	-18.2	0.8	3.67	0.332	0.0318
			Center crest, downhole 152'						13	EpiSen	90	-13.7	-0.5	2.39	0.234	0.0272
			Center crest, downhole 152'						14	EpiSen	360	14.6	1.4	3.25	2.370	0.1010
			Center crest, downhole 152'						15	EpiSen	UP	-14.8	-0.7	2.84	1.270	0.0766
			Intake structure						16	EpiSen	90	9.2	0.4	1.38	0.520	0.0743
			Intake structure						17	EpiSen	360	10.6	0.3	1.35	0.299	0.0298
			Intake structure						18	EpiSen	UP	6.2	0.3	1.04	0.274	0.0165
5300	K2	1421	CA: Redlands; Seven Oaks Dam	USGS	34.1105	-117.0986	32.0	226
			Downstream, surface						1	EpiSen	90	-30.3	0.8	3.32	0.400	0.0637
			Downstream, surface						2	EpiSen	360	41.1	-0.9	2.92	0.389	0.0442
			Downstream, surface						3	EpiSen	UP	12.2	-0.2	0.84	0.175	0.0186
			Downstream, Downhole 53'						4	EpiSen	90	10.7	0.5	2.44	0.406	0.0720
			Downstream, Downhole 53'						5	EpiSen	360	8.2	-0.3	1.72	0.276	0.0309
			Downstream, Downhole 53'						6	EpiSen	UP	6.0	-0.2	0.62	0.173	0.0184
5162	Etna	1417	CA: Mentone; Fire Station 9	USGS	34.067	-117.117	36.6	223	1	FBA-2g	180	-18.8	1.0	4.66	1.480	0.0925
									2	FBA-2g	UP	14.0	0.5	2.23	0.471	0.0311
									3	FBA-2g	270	16.1	1.2	4.02	1.760	0.1440
5071	K2	544	CA: Morongo Valley; Fire Sta 461	USGS	34.049	-116.578	38.2	139	1	FBA-2g	360	-19.7	-1.1	3.27	1.800	0.0953
									2	FBA-2g	UP	-12.4	-0.8	1.68	0.682	0.0627
									3	FBA-2g	90	-20.7	1.5	3.42	1.670	0.1420
5336	Etna	2009	CA: San Bernardino; Serrano Sch	USGS	34.145	-117.219	38.8	242	1	EpiSen	90	-14.4	1.2	3.11	2.250	0.0997
									2	EpiSen	360	-20.0	-1.0	4.43	1.310	0.1230
									3	EpiSen	UP	9.7	-0.5	1.53	0.430	0.0492
5161	Etna	1982	CA: Highland; Fire Station 8	USGS	34.136	-117.213	38.8	240	1	EpiSen	90	-18.7	1.2	3.95	1.560	0.1480
									2	EpiSen	360	29.5	-1.5	5.09	1.530	0.0983
									3	EpiSen	UP	11.8	-0.4	1.44	0.306	0.0305
5072	Etna	1405	CA: Whitewater; WW Trout Farm	USGS	33.990	-116.656	39.7	153	1	FBA-2g	40	-10.5	-0.6	1.80	0.274	0.0491
									2	FBA-2g	UP	13.3	-0.4	1.41	0.119	0.0191
									3	FBA-2g	130	17.0	-0.6	1.97	0.274	0.0339
5331	Etna	2008	CA: San Bernardino; DelRosa WrkSt	USGS	34.1663	-117.2512	40.4	247	1	EpiSen	111	-7.0	0.4	2.82	0.618	0.0577
									2	EpiSen	21	8.0	0.4	1.45	0.441	0.0893
									3	EpiSen	UP	-6.5	-0.2	0.81	0.307	0.0427
5327	K2	536	CA: San Bernardino; Fire Station  7	USGS	34.165	-117.288	43.6	248	1	FBA-2g	360	-12.1	-0.6	1.96	0.805	0.0454
									2	FBA-2g	UP	7.0	-0.3	1.83	0.174	0.0465
									3	FBA-2g	90	-15.5	-0.6	3.43	1.100	0.0415
5073	K2	587	CA: Cabazon; Cabazon Post Office	USGS	33.918	-116.782	43.9	172	1	FBA-2g	180	-6.0	0.3	0.91	0.219	0.0420
									2	FBA-2g	UP	5.2	0.2	0.86	0.255	0.0311
									3	FBA-2g	270	-6.7	-0.3	1.15	0.428	0.0502
5337	Etna	2583	CA: San Bernardino; Fire Station 4	USGS	34.14	-117.294	45.2	245	1	EpiSen	90	-13.8	0.8	2.83	1.090	0.0771
									2	EpiSen	360	20.5	-1.5	3.40	1.330	0.1110
									3	EpiSen	UP	-7.2	-0.5	2.35	0.390	0.0495
5373	Etna	2013	CA: San Bernardino; Lincoln Sch	USGS	34.123	-117.287	45.5	243	1	EpiSen	90	-12.6	1.2	2.62	1.230	0.0953
									2	EpiSen	360	19.2	-1.5	4.29	1.190	0.1020
									3	EpiSen	UP	-7.8	-0.4	1.82	0.386	0.0413
5326	Etna	1978	CA: San Bernardino; Fire Station 1	USGS	34.105	-117.281	45.9	240	1	EpiSen	90	10.80	1.00	2.46	1.700	0.1880
									2	EpiSen	360	14.70	-0.70	3.31	1.070	0.1890
									3	EpiSen	UP	-6.70	0.30	1.17	0.563	0.0619
5245	Etna	1980	CA: San Bernardino; Co Srvc Bldg	USGS	34.1061	-117.2887	46.5	241	1	EpiSen	360	-14.4	0.7	3.33	0.932	0.1740
									2	EpiSen	270	12.7	-0.8	2.21	1.390	0.1710
									3	EpiSen	UP	-5.8	-0.3	1.16	0.467	0.0507
5339	K2	584	CA: San Bernardino; Fire Sta 10	USGS	34.091	-117.289	47.4	239	1	FBA-2g	180	-18.2	0.9	4.18	1.060	0.1380
									2	FBA-2g	UP	5.8	-0.3	1.07	0.555	0.0576
									3	FBA-2g	270	10.8	-0.8	2.93	1.340	0.1990
5329	K2	548	CA: San Bernardino; Fire Sta 11	USGS	34.069	-117.275	47.6	236	1	FBA-2g	180	24.3	1.1	5.86	1.550	0.2970
									2	FBA-2g	UP	8.3	-0.4	1.52	0.667	0.0743
									3	FBA-2g	270	-12.7	1.2	4.12	1.320	0.3910
129	Etna	1989	CA: Loma Linda; Univ Medical Ctr	USGS	34.05	-117.264	48.0	233	1	EpiSen	90	-11.1	0.8	2.83	1.080	0.0862
									2	EpiSen	360	-13.2	-0.8	4.38	0.799	0.1520
									3	EpiSen	UP	-8.7	0.4	1.89	0.599	0.0527
5037	K2	551	CA: Reche Canyon; Olive Dell Ranch	USGS	34.004	-117.223	48.5	226	1	FBA-2g	360	10.9	-0.5	2.68	0.265	0.0240
									2	FBA-2g	UP	-6.4	-0.2	0.72	0.148	0.0188
			not processed due to baseline offsets						3	FBA-2g	90
5371	Etna	1995	CA: San Bernardino; Verdemont Sch	USGS	34.205	-117.365	49.0	256	1	EpiSen	90	11.1	0.6	2.50	0.605	0.0438
									2	EpiSen	360	10.4	-0.4	1.92	0.339	0.0376
									3	EpiSen	UP	-5.8	-0.2	0.88	0.257	0.0348
5328	K2	599	CA: San Bernardino; Montecito Pk	USGS	34.047	-117.277	49.1	234	1	FBA-2g	360	-19.6	-1.2	6.83	1.340	0.1310
									2	FBA-2g	UP	13.0	0.5	2.90	0.879	0.0600
									3	FBA-2g	90	23.3	1.3	4.59	1.750	0.1390
5341	Etna	1983	CA: Colton; Kaiser Medical Clinic	USGS	34.058	-117.305	50.6	237	1	EpiSen	90	-12.1	1.0	4.90	1.420	0.1860
									2	EpiSen	360	-11.7	-0.7	4.01	0.754	0.1830
									3	EpiSen	UP	10.1	-0.3	0.96	0.551	0.0644
5295	K2	534	CA: N Palm Springs; Fire Sta 36	USGS	33.925	-116.548	50.9	147	1	FBA-2g	180	9.2	-0.7	2.32	0.806	0.0882
									2	FBA-2g	UP	6.3	-0.4	1.54	0.333	0.0601
									3	FBA-2g	270	-16.1	1.1	3.12	1.250	0.1970
5330	Etna	1979	CA: San Bernardino; Fire Sta 9	USGS	34.103	-117.349	51.6	244	1	EpiSen	90	-9.7	0.5	1.51	0.944	0.0944
									2	EpiSen	360	-11.5	-0.7	2.39	0.629	0.0934
									3	EpiSen	UP	-10.7	-0.4	1.91	0.305	0.0355
5265	K2	514	CA: Devore; Devore Water Co	USGS	34.235	-117.407	52.1	261	1	FBA-2g	360	14.0	0.8	2.42	0.465	0.0498
									2	FBA-2g	UP	8.3	-0.3	1.34	0.244	0.0337
									3	FBA-2g	90	-15.1	0.7	3.44	0.603	0.0585
5036	K2	580	CA: San Bernardino; Sycamore FS	USGS	34.193	-117.427	54.9	256	1	FBA-2g	360	4.6	-0.2	0.65	0.150	0.0321
									2	FBA-2g	UP	-3.2	-0.1	0.35	0.139	0.0272
									3	FBA-2g	90	4.9	0.2	0.80	0.209	0.0430
5324	Etna	2041	CA: Lakeview; San Jacinto Wildlife	USGS	33.856	-117.114	56.0	206	1	EpiSen	90	-10.5	0.4	1.04	0.188	0.0168
									2	EpiSen	360	10.7	-0.4	0.94	0.079	0.0160
									3	EpiSen	UP	-7.9	0.2	0.30	0.065	0.0083
5435	Etna	1433	CA: Sky Valley; Fire Station 56	USGS	33.9168	-116.3898	60.7	136	1	FBA-2g	360	8.5	-0.5	1.38	0.267	0.0414
									2	FBA-2g	UP	5.8	-0.2	0.99	0.163	0.0293
									3	FBA-2g	90	8.6	-0.4	1.31	0.564	0.0249
5043	Etna	2050	CA: Hurkey Creek; County Park	USGS	33.6758	-116.6800	72.0	168	1	EpiSen	90	5.5	0.2	0.86	0.079	0.0154
									2	EpiSen	360	-7.9	0.2	0.83	0.073	0.0136
									3	EpiSen	UP	-4.3	0.1	0.54	0.056	0.0093
5282	K2	513	CA: Wrightwood; Post Office	USGS	34.36	-117.628	72.0	275	1	FBA-2g	180	31.1	1.1	6.28	0.381	0.0331
									2	FBA-2g	UP	-21.4	-0.7	2.74	0.221	0.0151
									3	FBA-2g	270	31.8	1.1	7.29	0.359	0.0275
5222	K2	594	CA: Anza; Tripp Flats Training Camp	USGS	33.6022	-116.7557	79.0	174	1	FBA-2g	360	-8.0	0.2	0.61	0.061	0.0132
									2	FBA-2g	UP	5.5	0.1	0.23	0.039	0.0110
									3	FBA-2g	90	5.1	-0.2	0.60	0.088	0.0072
5294	K2	532	CA: Indio; Jackson Road	USGS	33.747	-116.215	85.5	137	1	FBA-2g	180	-9.2	0.4	2.61	0.384	0.0682
									2	FBA-2g	UP	-2.9	0.2	0.65	0.239	0.0478
									3	FBA-2g	270	-7.3	0.5	1.14	0.420	0.1070
5032	Etna	2024	CA: Paradise Springs; Camp Office	USGS	34.3962	-117.8070	88.7	275	1	EpiSen	90	-4.8	-0.1	0.92	0.081	0.0116
									2	EpiSen	360	-7.5	0.3	1.71	0.273	0.0103
									3	EpiSen	UP	3.6	0.1	0.94	0.148	0.0092
5031	K2	521	CA: Valyermo; Forest-Fire Station	USGS	34.4435	-117.8526	93.6	279	1	FBA-2g	360	-17.0	-0.6	2.86	0.731	0.0271
									2	FBA-2g	UP	-11.0	0.5	1.72	0.302	0.0152
									3	FBA-2g	90	30.3	-1.4	4.30	1.130	0.0483
5407	MtWh	133	CA: Pasadena; Millikan Library	USGS	34.137	-118.126	119.3	261
			3rd Floor, E						1	FBA-11	360	-8.3	-0.7	1.27	0.864	0.0447
			3rd Floor, W						2	FBA-11	270	-11.3	0.6	2.97	1.800	0.0505
			3rd Floor, W						3	FBA-11	360	-10.9	0.7	1.30	0.826	0.0425
			4th Floor, E						4	FBA-11	360	10.3	0.8	1.26	1.020	0.0510
			4th Floor, W						5	FBA-2g	270	-12.0	0.7	3.12	2.590	0.0636
			4th Floor, W						6	FBA-11	360	-10.9	0.9	1.28	0.985	0.0513
			5th Floor, W						7	FBA-11	270	-12.7	0.9	2.91	3.440	0.0769
			5th Floor, W						8	FBA-11	360	-12.5	1.1	1.55	1.170	0.0601
			5th Floor, E						9	FBA-11	360	11.2	1.1	1.52	1.220	0.0605
			8th Floor, E						10	FBA-2g	360			Not Operational
			8th Floor, W						11	FBA-2g	270	-9.9	1.3	1.10	6.020	0.1160
			8th Floor, W						12	FBA-2g	360	-18.8	1.8	2.39	1.700	0.0943
			9th Floor, E						13	FBA-2g	360	-19.5	-1.9	2.87	1.900	0.1040
			9th Floor, W						14	FBA-2g	270	11.3	1.5	1.91	6.850	0.1320
			9th Floor, W						15	FBA-2g	360	-20.4	1.9	2.85	1.860	0.1050
			Roof						16	FBA-2g	360	22.6	-2.1	3.44	2.060	0.1150
			Roof						17	FBA-2g	270	14.1	1.8	3.02	7.690	0.1480
			Roof						18	FBA-2g	360	24.0	2.2	3.35	2.020	0.1170
5407	MtWh	134	CA: Pasadena; Millikan Library	USGS	34.137	-118.126	119.3	261
			Basement, E corner						1	FBA-11	360			Not Operational
			Basement, E corner						2	FBA-11	UP			Not Operational
			Basement, E corner						3	FBA-11	270			Not Operational
			Basement, NW corner						4	FBA-11	360			Not Operational
			Basement, NW corner						5	FBA-11	UP			Not Operational
			Basement, SE corner						6	FBA-11	UP			Not Operational
			1st Floor, E						7	FBA-11	360	6.1	-0.5	1.28	0.552	0.0311
			1st Floor, W						8	FBA-11	270	-9.3	0.5	1.96	0.694	0.0389
			1st Floor, W						9	FBA-11	360	-6.8	-0.4	1.25	0.574	0.0327
			2nd Floor, E						10	FBA-2g	360			Not Operational
			2nd Floor, W						11	FBA-11	270	-10.4	0.5	2.49	1.200	0.0412
			2nd Floor, W						12	FBA-11	360	-9.8	0.5	1.32	0.701	0.0382
			6th Floor, E						13	FBA-11	360	13.2	1.2	1.68	1.380	0.0680
			6th Floor, W						14	FBA-11	270	-11.7	1.1	2.38	4.350	0.0908
			6th Floor, W						15	FBA-11	360	-15.2	1.4	1.81	1.360	0.0714
			7th Floor, E						16	FBA-2g	360	14.7	1.4	1.85	1.550	0.0811
			7th Floor, W						17	FBA-2g	270	-9.5	1.1	1.52	5.140	0.1010
			7th Floor, W						18	FBA-2g	360	-17.3	1.6	2.06	1.520	0.0827
5296	K2	155	CA: Pasadena; USGS/NSMP Office	USGS	34.1367	-118.1285	119.5	261	1	FBA-2g	180	7.3	0.6	1.86	0.480	0.0296
									2	FBA-2g	UP	3.0	0.2	0.70	0.229	0.0117
									3	FBA-2g	270	-7.3	-0.4	2.20	0.383	0.0307
262	Etna	1442	CA: Palmdale; Fire Station 37	USGS	34.580	-118.110	119.8	285	1	FBA-2g	360	7.5	0.5	3.35	0.405	0.0399
									2	FBA-2g	UP	4.9	0.3	1.48	0.390	0.0148
									3	FBA-2g	90	6.1	0.3	2.11	0.366	0.0334
5396	K2	517	CA: Los Angeles; Acosta Residence	USGS	34.072	-118.176	125.2	258	1	FBA-2g	180	7.8	0.7	2.10	0.892	0.0569
									2	FBA-2g	UP	-6.2	-0.3	1.49	0.208	0.0150
									3	FBA-2g	270	-6.4	-0.4	2.20	0.301	0.0207
5029	K2	597	CA: Leona Valley; Fire Station 1	USGS	34.6172	-118.2849	136.3	285	1	FBA-2g	360	11.9	-0.6	5.26	1.060	0.0307
									2	FBA-2g	UP	6.5	-0.3	1.72	0.309	0.0094
									3	FBA-2g	90	-10.0	0.5	4.16	0.267	0.0202
5423	Etna	2582	CA: Sylmar; Fire Station  91	USGS	34.3088	-118.4479	147.3	270	1	EpiSen	310	-5.0	0.4	1.38	0.427	0.0670
									2	EpiSen	220	5.5	0.6	1.29	0.560	0.0414
									3	EpiSen	UP	2.3	-0.2	0.58	0.226	0.0254