Small earthquake hits region January 28, 2002 12:00 am Tags: effect, s Seismology Lab., Tacoma, University of Washington, University of Washingtons Seismology Lab A small earthquake measuring 2.5 in magnitude and centered 16 miles south of Tacoma hit Saturday morning, according to the University of Washingtons Seismology Lab. There were no injuries or damage. Tags: effect, s Seismology Lab., Tacoma, University of Washington, University of Washingtons Seismology Lab