These may all be what I felt coming a couple of nights ago.  The air here has been real still the last two nights -- barely a breeze.

4.0
Date-Time

Tuesday, September 07, 2010 at 08:58:08 PM at epicenter

Location 30.408°N, 113.643°W
Depth 10 km (6.2 miles) set by location program
Region GULF OF CALIFORNIA
Distances 100 km (65 miles) S of Puerto Penasco, Sonora, Mexico

3.3
Date-Time

 Tuesday, September 07, 2010 at 11:00:41 PM at epicenter

Location 32.209°N, 115.353°W
Depth 0.1 km (~0.1 mile) (poorly constrained)
Region BAJA CALIFORNIA, MEXICO
Distances 50 km (30 miles) SSE of Mexicali, Baja California, Mexico

3.5
Date-Time

Tuesday, September 07, 2010 at 10:29:13 AM at epicenter

Location 35.727°N, 116.957°W
Depth 4.5 km (2.8 miles)
Region SOUTHERN CALIFORNIA
Distances 65 km (40 miles) E of Ridgecrest, California
90 km (55 miles) N of Barstow, California
2.1
Date-Time

Tuesday, September 07, 2010 at 05:33:10 PM at epicenter

Location 35.044°N, 117.673°W
Depth 1.4 km (~0.9 mile)
Region SOUTHERN CALIFORNIA
Distances 55 km (35 miles) NE of Lancaster, California
60 km (40 miles) WNW of Barstow, California