Oklahoma Gov. Mary Fallin has declared a state of emergency in Pawnee County after a magnitude 5.6 earthquake struck northwest of Pawnee.

The earthquake struck at 7:02 a.m. Saturday and was felt throughout the Midwestern United States, although no severe damage or serious injuries were reported.

The quake ties a 2011 earthquake for the strongest earthquake in recorded state history.

Fallin’s order allows state agencies to make emergency purchases for disaster relief and is the first step toward asking for federal assistance, if necessary. Fallin said in a statement that information is still being gathered and will be reviewed by her coordinating council on seismic activity.

The state of emergency lasts for 30 days and additional counties may be added.