Brush fire breaks out above Glendora near Angeles National Forest

About five dozen firefighters have been dispatched to a brush fire that broke out in the hills above Glendora near the edge of the Angeles National Forest early Thursday morning.

The fire started just before 6 a.m. near the intersection of Glendora Mountain Road and Colby Trail Motorway, said Miguel Ornelas of the Los Angeles County Fire Department.

Ornelas said that although the blaze was technically in Glendora, forest crews were also joining in the fight.

UPDATE: 3 people in custody in connection with wildfire 

There was no immediate estimate of the size of the fire or when crews might have it under control. 

The fire comes as the National Weather Service extended red flag warnings for Los Angeles and Ventura counties until 3 p.m. Friday with extremely low humidity worsening already tinder-dry conditions. 

The circumstances are such that if a fire were to ignite, "there could be rapid spread of wildfire," the weather service warned Thursday.

PHOTOS: Colby fire rages near Glendora 

The weather service said the unseasonably warm weather and Santa Ana winds were the result of high pressure near the surface of the Great Basin coupled with high pressure aloft just west of Southern California, blocking storm systems from reaching the region.


LAPD in mourning after 3 officers killed in 2 months

Donald Sterling will fight to keep Clippers, Garcetti predicts

Red Cross assisting homeless residents displaced after shelter fire

Twitter: @aribloomekatz | Facebook

Copyright © 2017, Los Angeles Times
EDITION: California | U.S. & World