Update at 7:37 p.m.:
Southern California Edison Thursday evening reported three poles scorched by the fire in Wildomar, prompting officials to de-energize the attached electrical lines.
About 35 customers were without power for about 20 minutes, while crews cleared the poles and made the appropriate repairs, an SCE spokesperson told Patch.
Update at 4:37 p.m.:
The so-called "Wesley" fire was 100 percent contained Thursday afternoon, officials said.
Damaged in the blaze -- mapped at 14 acres -- were one empty home, several outbuildings and a vehicle, Cal Fire's Melody Hendrickson said.
A monetary damage estimate was not immediately available.
Update at 4:02 p.m.:
A firefighter battling a 15-acre blaze in Wildomar Thursday burned two of his fingers, officials said, and a civilian was taken to a hospital with minor injuries not related to the incident.
Cal Fire reported the fire at 80 percent contained, with 15 acres burned.
Mandatory evacuations were not carried out, though some people voluntarily vacated their homes.
Update at 2:36 p.m.:
Firefighters battling the blaze in Wildomar worked in 103-degree heat Thursday, according to Cal Fire.
No updates on the progress of the fire were available as of 2:30 p.m. but also no word about containment of the blaze, which started on Wesley Street at Grand Avenue, then jumped Grand.
At least three homes were burned but no injuries were reported.
Grand Avenue was closed at Grey Eagle Court to the south and Ridge Oak Road to the north; Wesley at Grand also remained closed.
Relative humidity was at 23 percent, Cal Fire reported, and winds were blowing west/southwest at 23 mph.
Firefighters from the Pechanga tribe, U.S. Forest Service, Corona and Murrieta were assisting Cal Fire, officials reported.
Update at 2:12 p.m.:
Some 163 firefighters are now on the scene of the so-called "Wesley" blaze in Wildomar.
UPDATE at 1:53 p.m.:
Authorities have ordered mandatory evacuations, as homes in Wildomar went up in flames, Patch has learned.
Homes on Grand Avenue to Union Street -- and north of Wesley Street -- are being evacuated, Patch learned at the scene.
The fire, which began just before 1 p.m. on Wesley Street on Grand Avenue, had jumped Grand early on, Patch learned.
Witness Diana Ethington emailed Patch that her progress down Grand toward Clinton Keith Road was marked by columns of smoke rising into the sky.
"There (are) fires burning structures on both side of Grand; looking beyond these fires it looked like Grand was smoked in all the way to Clinton Keith," Ethington wrote.
"It was the strangest thing I have ever seen, like I think they have to be housing they were billowing up huge black smoke in four different locations that we could see," the witness wrote Patch.
A fire in Wildomar Thursday burned three homes and gobbled 10 acres, forcing closure of Grand Avenue but no injuries were immediately reported.
The fire on Wesley Street -- at Grand Avenue -- was reported just before 1 p.m., according to Cal Fire's Melody Hendrickson.
Nearly 100 firefighters were at the scene, assisted by two air tanker and a single helicopter crew, Hendrickson said.
The fire had burned seven acres within six minutes, according to Cal Fire.
Photos to be posted shortly.