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SUNOL, Calif. - A vegetation fire in Sunol Valley prompted evacuation orders Tuesday as firefighters worked to contain the fast-moving blaze, authorities said.
Cal Fire SCU reported the Little Fire at about 2:54 p.m. near Little Valley Road and Hubbard Lane, south of Pleasanton.
Cal Fire and Alameda County Fire Department crews responded to the blaze. As many as 100 firefighters have responded, the agency said.
Firefighters face steep terrain
What we know:
Battalion Chief Raul Medina said firefighters were dealing with steep terrain and unpaved roads, making firefighting efforts more challenging.
However, he said air tankers were helping slow the fire's spread, and crews were making good progress.
As of late Tuesday evening, the fire had exploded to 950 acres, according to Cal Fire.
Containment is at 10%.
No containment had been reported, and there were no immediate reports of damaged or destroyed structures.
Cal Fire said it is investigating reports that a fire engine from an unknown agency overturned. Officials did not provide additional details, and the reports have not been confirmed.
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Little Fire in Sunol jumps to 700 acres
The Little Fire in Sunol Valley grew rapidly to 700 acres Tuesday afternoon, prompting evacuation orders.
Evacuation orders issued
What you can do:
Local municipalities issued evacuation orders for zones ALC-072, PLS-080, PLS-081, PLS-103, PLS-079, and PLS-082, including the Ruby Hill neighborhood in Pleasanton.
"Immediate threat to life. This is a lawful order to LEAVE NOW. The area is lawfully closed to public access," the evacuation order read.
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Sunol 'Little Fire' triggers evacuation orders
The 'Little Fire' in Sunol, south of Pleasanton has rapidly exploded in size Tuesday afternoon. CAL FIRE and the Alameda County Fire Department are responding. There are evacuation orders and warnings currently in place.
Weather outlook
Dig deeper:
The fire ignited as a National Weather Service heat advisory remained in effect across the Bay Area through 9 p.m. Tuesday, with inland temperatures expected to reach the mid-90s to low 100s.
KTVU meteorologist Rosemary Orozco said the vegetation along the Sunol ridgeline, where the Little Fire is burning, is very dry.
"When the grass and vegetation is already dry and preheated, it really just allows that fire to ignite and burn faster," she said.
She added that afternoon winds typically increase in the area, which could complicate firefighting efforts and contribute to the fire's spread.
The Bay Area Air District, which measures air quality, said smoke will impact the East Bay. Residents in affected areas should stay alert by monitoring news coverage and public health advisories and warnings. You can monitor air quality at the AirNow website. However, the air district said a Spare the Air alert is not in effect and pollution levels are not expected to exceed the national 24-hour health standard.
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Sunol vegetation fire: Evacuations underway
Authorities issued an evacuation order as a vegetation fire in Sunol continues to spread.