A brush fire ignited in San Diego's Sorrento Valley area on Monday morning, quickly spreading and threatening structures. - Fire reported at 9:20 a.m.
near Vista Sorrento Parkway and Sorrento Valley Boulevard. - By 9:50 a.m., it had burned 3 acres with a moderate to dangerous spread rate.
- By 10:05 a.m., the fire had grown to 30-40 acres. - Aerial support has been requested to assist fire crews.
Fire crews are working to contain the blaze, which is threatening at least one structure. No injuries have been reported, and the cause is under investigation.