USGS National-Strong Motion Program
Preliminary Peak Ground Acceleration Values (from Table 2, USGS Open-File Reprot 89-568)
October 1989 Loma Prieta, California Earthquake
Mw 6.9, Ms 7.1, 10/18/1989 00:04 UTC (10/17/1989 05:04 pm PDT)
Map	Sta	Inst	Inst	Inst	Name	Lat	Long	Dist	Ch	Oriet	Max
No	No	Type	No	Owner		(deg)	(deg)	(km)	No	(deg)	Accel (g)
1	1652				Anderson Dam	37.166	-121.628	27
		SMA-1	4324	USGS	Crest				1	340	0.26
									2	Up	0.19
									3	250	0.39
		SMA-1	2803	USGS	Downstream				1	340	0.25
									2	Up	0.17
									3	250	0.26
		SMA-1	468	USGS	Left abutment				1	340	0.08
									2	Up	0.05
									3	250	0.07
		CRA-1	252	USGS	Structural array * (see footnote)
					Mid-dam, Center				1	160	0.11
					Mid-dam, Center				2	250	0.14
					Mid-dam, Right				3	70	0.14
					Toe				4	160	0.18
					Toe				5	Up	0.16
					Toe				6	250	0.23
					Center Crest				7	160	0.32
					Center Crest				8	Up	0.16
					Center Crest				9	250	0.43
					Right Crest				10	160	0.32
					Right Crest				11	Up	0.23
					Right Crest				12	250	0.38
2	1571	SMA-1	288	USGS	San Jose; Interchange 101/280/680; Abutment	37.340	-121.851	34	1	322	0.18
									2	Up	0.08
									3	232	0.13
3	1696	SMA-1	600	USGS	Cherry Flat Reservoir; Calaveras Array	37.396	-121.756	42	1	360	0.09
									2	Up	0.06
									3	270	0.07
4	1695	SMA-1	4053	USGS	Sunnyvale; Colton Ave	37.402	-122.024	43	1	360	0.22
									2	Up	0.10
									3	270	0.19
5	1656	SMA-1	3928	USGS	Hollister Airport; Differential Array	36.888	-121.413	45	1	255	0.29
									2	Up	0.16
									3	165	0.27
6	1227				Palo Alto; VA Hospital, Bldg 1	37.40	-122.14	45
		SMA-1	605	USGS	Basement				1	302	0.34
									2	Up	0.20
									3	212	0.38
		SMA-1	853	USGS	Roof (7th level)				1	302	1.09
									2	Up	0.64
									3	212	0.79
7	1575	SMA-1	2504	USGS	Hollister; City Hall, basement	36.851	-121.402	47	1	180	0.23
									2	Up	0.22
									3	90	0.25
8	1687	SMA-1	2257	USGS	Calaveras Reservoir South; Calaveras Array	37.452	-121.807	47	1	180	0.13
									2	Up	0.07
									3	90	0.08
9	1032	SMA-1	832	USGS	Hollister; SAGO Vault	36.765	-121.446	49	1	360	0.06
									2	Up	0.05
									3	270	0.04
10	1601	SMA-1	4766	USGS	Palo Alto; Stanford University,  SLAC Test Lab	37.419	-122.205	51	1	360	0.29
									2	Up	0.10
									3	270	0.19
11	1230	SMA-1	752	USGS	Menlo Park; VA Hospital, Bldg 37	37.468	-122.157	54	1	110	0.12
									2	Up	0.11
									3	20	0.27
12	1686	SMA-1	2261	USGS	Fremont; Emerson Court	37.535	-121.929	56	1	180	0.15
									2	Up	0.07
									3	90	0.20
13	1161	SMA-1	590	USGS	Crystal Springs Reservoir; APEEL Array, Station 9	37.47	-122.32	62	1	227	0.11
									2	Up	0.06
									3	137	0.12
14	1688	SMA-1	4703	USGS	Sunol; Fire Station, Calaveras Array	37.597	-121.880	63	1	180	0.07
									2	Up	0.03
									3	90	0.10
15	1002	SMA-1	4225	USGS	Redwood City; APEEL Array, Station 2	37.52	-122.25	63	1	133	0.23
									2	Up	0.08
									3	43	0.28
16	1515	SMA-1	3034	USGS	Foster City, Menhaden Court	37.555	-122.248	66	1	360	0.12
									2	Up	0.09
									3	270	0.11
17	1265				Del Valle Dam	37.615	-121.75	66
		SMA-1	444	USGS	Crest				1	65	0.08
									2	Up	0.07
									3	335	0.08
		SMA-1	451	USGS	Toe				1	65	0.06
									2	Up	0.03
									3	335	0.04
18	1226				Livermore; VA Hospital, Bldg. 62	37.625	-121.762	67
		SMA-1	602	USGS	Basement				1	125	0.06
									2	Up	0.03
									3	35	0.05
		SMA-1	854	USGS	Roof (7th)				1	125	0.08
									2	Up	0.03
									3	35	0.15
19	1481	SMA-1	1490	USGS	Bear Valley; Williams Ranch, Station 12	36.658	-121.249	70	1	310	0.17
									2	Up	0.10
									3	220	0.16
20	1121	DSA-1	137	USGS	Hayward; John Muir School, APEEL Array Station 2E	37.66	-122.08	72	1	54	0.13
									2	Up	0.06
									3	324	0.16
21	1474	SMA-1	1481	USGS	Bear Valley; Callens Ranch,  Station 5	36.673	-121.195	73	1	310	0.07
									2	Up	0.04
									3	220	0.07
22	1129				Hayward; City Hall	37.679	-122.082	74
		SMA-1	431	USGS	Ground floor				1	64	0.05
									2	Up	0.03
									3	334	0.06
		SMA-1	430	USGS	Ground North				1	64	0.06
									2	Up	0.02
									3	334	0.06
		SMA-1	429	USGS	Ground South				1	64	0.09
									2	Up	0.03
									3	334	0.10
		CRA-1	271	USGS	Structural Array
					12th Floor, West				1	334	0.10
					12th Floor, Center				2	334	0.10
					12th Floor, Center				3	64	0.13
					7th Floor, West				4	334	0.09
					7th Floor, Center				5	334	0.08
					7th Floor, Center				6	64	0.09
					3rd Floor, West				7	334	Inop
					3rd Floor, Center				8	334	0.07
					3rd Floor, Center				9	64	0.08
					3rd Floor, Southwest				10	Up	0.05
					3rd Floor, Southwest				11	Up	0.04
					Ground Floor, West				12	334	0.07
23	1689	SMA-1	493	USGS	Dublin; Fire Station, Calaveras Array	37.709	-121.932	75	1	360	0.08
									2	Up	0.03
									3	270	0.09
24	1479	SMA-1	1498	USGS	Bear Valley; Webb Residence; Station 10	36.532	-121.143	86	1	310	0.10
									2	Up	0.05
									3	220	0.13
25	1476	SMA-1	1478	USGS	Pinnacles National Monument; Bear Valley Station 7	36.483	-121.180	88	1	310	0.04
									2	Up	0.03
									3	220	0.06
26	1675	SMA-1	111	USGS	San Francisco; 1295 Shafter St., FS #17	37.728	-122.385	89	1	360	0.11
									2	Up	0.05
									3	270	0.07
27	1116	SMA-1	1116	USGS	San Francisco; SF State University; Thornton Hall	37.724	-122.475	93	1	270	0.14
									2	Up	0.04
									3	180	0.11
28	1446				San Francisco; 575 Market St, Chevron Building	37.79	-122.40	96
		SMA-1	1221	USGS	Basement				1	135	0.08
									2	Up	0.06
									3	45	0.11
		CRA-1	210	USGS	Structural Array
					42nd Level, Northwest				1	45	0.22
					42nd Level, Center				2	225	0.19
					42nd Level, Center				3	135	0.14
					34th Level, Northwest				4	45	0.15
					34th Level, Center				5	225	0.16
					34th Level, Center				6	135	0.19
					25th Level, Northwest				7	45	0.19
					25th Level, Center				8	225	0.23
					25th Level, Center				9	135	0.16
					Ground Level				10	45	0.12
					Ground Level				11	315	0.13
29	1239				San Francisco; 600 Montgomery St., Transamerica Bldg.	37.80	-122.40	97
		SMA-1	526	USGS	Basement				1	261	0.12
									2	Up	0.05
									3	171	0.11
		SMA-1	527	USGS	29th Floor				1	261	0.15
									2	Up	0.11
									3	171	0.17
		SMA-1	529	USGS	49th Floor				1	261	0.31
									2	Up	0.14
									3	171	0.29
		CRA-1	292	USGS	Structural Array
					21st Floor, West Central				1	351	0.20
					21st Floor, South Central				2	351	0.17
					21st Floor, South Central				3	81	0.22
					5th Floor, West Central				4	351	0.27
					5th Floor, South Central				5	351	0.28
					5th Floor, South Central				6	81	0.24
					Southeast Corner Foundation				7	Up	0.07
					Ground Level, West Central				8	351	0.17
					Ground Level, Center				9	351	0.15
					Ground Level, Center				10	351	0.18
					Northwest Corner Foundation				11	351	0.10
					West Side Foundation				12	351	0.09
					Southwest Corner Foundation				13	Up	0.05
30	1662				Emeryville; 6363 Christie Ave	37.844	-122.295	97
		SMA-1	2895	USGS	Ground Site South					350	0.22
										Up	0.06
										260	0.26
		CRA-1	253	USGS	Structural Array 1
					Roof (31st), West Wing				1	350	0.27
					Roof (31st), South Wing				2	50	0.31
					Roof (31st), North Wing				3	290	0.39
					Roof (31st), Center Core				4	260	0.25
					Roof (31st), Center Core				5	350	0.38
					21st Floor, Center Core				6	260	0.20
					21st Floor, West Wing				7	350	0.19
					21st Floor, South Wing				8	50	0.18
					21st Floor, North Wing				9	290	0.24
					13th Floor, Center Core				10	260	0.27
					13th Floor, Center Core				11	350	0.26
					21st Floor, Center Core				12	350	0.23
		CRA-1	254	USGS	Structural Array 2
					13th Floor, West Wing				1	350	0.22
					13th Floor, South Wing				2	50	0.23
					13th Floor, North Wing				3	290	0.32
					Ground Floor, West Wing				4	Up	0.06
					Ground Floor, South Wing				5	Up	0.06
					Ground Floor, Center Core				6	Up	0.05
					Ground Floor, North Wing				7	260	0.22
					Ground Floor, North Wing				8	Up	0.05
					Ground Floor, North Wing				9	350	0.17
					Ground Site North				10	350	0.20
					Ground Site North				11	Up	0.09
					Ground Site North				12	260	0.22
31	1005	SMA-1	2503	USGS	Berkeley; University of California, Strawberry Canyon	37.87	-122.24	98	1	135	0.04
									2	Up	0.02
									3	45	0.08
32	1006	SMA-1	2500	USGS	Berkeley; University of California, Haviland Hall, basement	37.87	-122.26	99	1	135	0.03
									2	Up	0.03
									3	45	0.06
33	1103				Berkeley; 2168 Shattuck Ave.	37.87	-122.27	99
		SMA-1	144	USGS	Basement, East				1	261	0.09
									2	Up	0.02
									3	171	0.11
		SMA-1	142	USGS	Basement, West				1	261	0.10
									2	Up	0.03
									3	171	0.09
		CRA-1	293	USGS	Structural Array
					13th Floor, East Core				1	171	0.13
					13th Floor, East Core				2	261	0.23
					13th Floor, Center				3	171	0.13
					13th Floor, Roof West Core				4	171	0.19
					13th Floor, Roof West Core				5	81	0.21
					13th Floor, Southwest				6	81	0.23
					13th Floor, Southwest				7	171	0.16
					4th Floor, Southwest				8	171	0.23
					4th Floor, Southwest				9	81	0.11
					4th Floor, West Core				10	81	0.08
					4th Floor, West Core				11	171	0.11
					4th Floor, East Core				12	171	0.08
34	1225				San Francisco; VA Hospital	37.783	-122.504	100
		SMA-1	604	USGS	Basement				1	185	0.08
									2	Up	0.05
									3	95	0.16
		SMA-1	767	USGS	7th Floor				1	185	0.34
									2	Up	0.08
									3	95	0.22
35	1678	SMA-1	298	USGS	San Francisco; Golden Gate Bridge	37.806	-122.472	100	1	360	0.12
									2	Up	0.06
									3	270	0.24
36	1439	SMA-1	178	USGS	Richmond; Bulk Mail Center, 2501 Rydin Road	37.884	-122.302	101	1	57	0.08
									2	Up	0.04
									3	327	0.11
37	1448	SMA-1	112	USGS	Martinez; VA Hospital, basement	37.993	-122.115	109	1	20	0.07
									2	Up	0.03
									3	290	0.05
38	1590	SMA-1	5155	USGS	Larkspur; Ferry Terminal	37.946	-122.508	115	1	360	0.10
									2	Up	0.06
									3	270	0.14
* Errata: Anderson Dam structural array: direction and location of sensors for channels 1-6 mixed up in USGS Open-File
Report 89-568, p10. Correct direction and location given here and on page 21 of report.