Today's quakes so far are:

2.7 magnitude at 1:42 p.m. Saturday about 17 miles east of Cherokee

2.6 magnitude at 8:04 a.m. Saturday about 8 miles NNW of Medford

2.6 magnitude at 7:21 a.m. Saturday about 6 miles NNW of Pawnee

2.7 magnitude at 5 a.m. Saturday about 8 miles NNW of Medford

2.8 magnitude at 3:22 a.m. Saturday about 9 miles NE of Cherokee

Three earthquakes of 3.0 magnitude or greater shook an area just northwest of Medford in Grant County within a 15-minute time period Thursday evening.

The first and biggest of the three, a 4.1 magnitude temblor, hit at 4:40 p.m. and could be felt as far as the Tulsa area to the east and Wichita, Kansas, to the north, according to the U.S. Geological Survey.

The measurement initially went out as a 4.6 magnitude quake but was quickly amended to 4.1 on the Geological Survey's website.