A wildfire has blackened about 20 square miles of land in the western Nebraska Sandhills.

Grant County Sheriff Mike Roth says the blaze started in Grant County around noon Wednesday and stretched into Arthur County. At least 10 agencies fought the flames for more than seven hours.

No injuries have been reported, nor any damage to buildings.

Another blaze was reported Tuesday afternoon in south-central Nebraska. Authorities say sparks from a passing train ignited fires along an eight-mile stretch east of Harvard. About 80 firefighters responded, and farmers used their tractors and discs to deny fuel to the flames.

No injuries or building damage have been reported.