The last 24 hours have shown active seismic activity in the Midwest and on the West Coast.
A significant magnitude 4.4 earthquake struck Oklahoma Monday afternoon near the town of Cherokee, OK. The shaking of the quake was reported outside the Sooner State in Arkansas, Kansas, Missouri and Texas.
The U.S. Geological Survey (USGS) also reported a second quake striking near Pawnee, OK about half an hour later with a magnitude of 3.2. Then a few minutes after the Pawnee quake, a second quake struck in the area of the Cherokee quake that measured 3.7 on the Richter scale.
The USGS said all the quakes were around three miles deep.
Local officials said there were no injuries or significant damage from the quakes.
In San Francisco, a magnitude 4.0 quake struck the San Francisco area on Tuesday.
The USGS says the quake struck around 2:30 a.m. near Fremont, or 35 southeast of San Francisco. The quake struck at a depth of 5 miles.
No injuries or significant property damage was reported in the Fremont quake.