Though these don’t look like foreshocks, there was activity within 25 miles of the 5.1 Anza quake in the past week. List follows:

MAG DATE LOCAL-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km

5.1 2001/10/30 23:56:16 33.508N 116.514W 15.2 15 km (10 mi) ESE of Anza, CA
2.4 2001/10/30 20:12:18 33.170N 116.133W 12.1 3 km ( 2 mi) N of Ocotillo Wells, CA
1.6 2001/10/30 18:27:50 33.176N 116.135W 8.4 4 km ( 2 mi) N of Ocotillo Wells, CA
0.8 2001/10/30 04:02:51 33.672N 116.769W 15.0 10 km ( 6 mi) SSW of Idyllwild, CA
1.3 2001/10/29 13:57:08 33.878N 116.796W 4.1 5 km ( 3 mi) SSW of Cabazon, CA
1.4 2001/10/29 12:56:04 33.563N 116.085W 7.1 1 km ( 1 mi) SW of Mecca, CA
1.5 2001/10/29 12:51:24 33.666N 116.784W 16.6 11 km ( 7 mi) SW of Idyllwild, CA
1.1 2001/10/29 11:09:19 33.597N 116.645W 14.9 5 km ( 3 mi) NNE of Anza, CA
1.6 2001/10/29 10:46:46 33.637N 116.720W 0.0 10 km ( 6 mi) NNW of Anza, CA
1.1 2001/10/29 04:54:12 33.129N 116.094W 4.9 4 km ( 2 mi) ESE of Ocotillo Wells, CA
1.0 2001/10/29 02:27:30 33.571N 116.567W 3.4 10 km ( 6 mi) E of Anza, CA
2.0 2001/10/29 00:40:49 33.258N 116.027W 2.4 6 km ( 4 mi) WSW of Salton City, CA
1.1 2001/10/28 22:01:01 33.889N 116.871W 6.2 4 km ( 3 mi) S of Banning, CA
1.7 2001/10/28 21:49:40 33.884N 116.871W 13.4 5 km ( 3 mi) S of Banning, CA
1.1 2001/10/28 19:03:09 33.684N 116.729W 17.9 7 km ( 4 mi) SSW of Idyllwild, CA
1.5 2001/10/28 14:00:33 33.816N 116.153W 4.7 13 km ( 8 mi) NNE of Indio, CA
1.1 2001/10/28 12:50:39 33.822N 116.811W 4.0 11 km ( 7 mi) SSW of Cabazon, CA
0.9 2001/10/28 05:15:10 33.351N 116.812W 18.3 5 km ( 3 mi) E of Palomar Observatory, CA
1.0 2001/10/28 02:48:38 33.438N 116.362W 13.7 20 km (13 mi) N of Borrego Springs, CA
1.1 2001/10/28 01:11:25 33.715N 116.764W 20.7 6 km ( 4 mi) SW of Idyllwild, CA
1.1 2001/10/27 19:38:44 33.931N 116.849W 6.4 3 km ( 2 mi) E of Banning, CA
1.3 2001/10/27 15:28:53 33.677N 116.766W 13.8 9 km ( 6 mi) SSW of Idyllwild, CA
0.8 2001/10/27 10:28:56 33.437N 116.647W 18.7 13 km ( 8 mi) S of Anza, CA
1.1 2001/10/27 09:04:52 33.672N 116.727W 5.7 8 km ( 5 mi) S of Idyllwild, CA
1.2 2001/10/26 03:00:19 33.597N 116.638W 15.6 6 km ( 3 mi) NE of Anza, CA
1.2 2001/10/25 12:46:43 33.907N 116.956W 0.0 3 km ( 2 mi) SE of Beaumont, CA
1.8 2001/10/25 09:24:48 33.098N 116.073W 5.9 7 km ( 5 mi) SE of Ocotillo Wells, CA
2.1 2001/10/25 07:02:45 33.305N 116.345W 12.6 6 km ( 4 mi) NNE of Borrego Springs, CA
1.5 2001/10/24 14:26:19 33.528N 116.754W 18.8 8 km ( 5 mi) WSW of Anza, CA