Wednesday's earthquake has been upgraded to 5.0. The quake was first measured at 4.9 and struck near the New Mexico-Colorado border. There are no reports of damage or injuries.

Bruce Presgrave of the U.S. Geological Survey says the quake hit southwest of Trinidad and west of Raton, New Mexico, in an area that experiences quakes from time to time. In September of 2001, a dozen quakes hit southwest of Trinidad over four weeks.

Presgrave classifies the latest quake as "light" and says it isn't likely to cause serious damage.

Residents in Walsenburg, Colorado -- about 45 miles north of the epicenter -- and La Veta, Colorado -- a town southwest of Walsenburg -- reported they hadn't felt the earthquake.