Updated: 6:17 p.m. July 31

First discovered: 4 hours ago, 2:13 p.m. July 31

Initial location: East Grade Road, Northwest of Lake Henshaw, San Diego County, Calif.

Fire unit: Unified Command: Cal Fire San Diego Unit and USFS

Fire type: Wildfire

Fire name: Grade Fire

Grade Fire initially started today at 2:13 p.m. on East Grade Road, Northwest of Lake Henshaw in San Diego County, California.

It has burned 170 acres after being active for four hours. Currently, there are no details on the containment or cause of the fire.

Source: Cal Fire