fire: October 2008 Archives

This comes from the Wikipedia entry on Santa Ana winds:

Santa Anas are a type of drainage wind, an offshore wind that results from the buildup of air pressure in the high-altitude Great Basin between the Sierra Nevada and the Rocky Mountains. When upper level winds are favorable, this high altitude air mass spills out of the Great Basin and is propelled gravitationally towards the southern California coastline, generally as a northeasterly wind.

It is often said that the air is heated and dried as it passes through the Mojave and Sonoran deserts, but according to meteorologists this is a popular misconception. The Santa Ana winds usually form during autumn and early spring when the surface air in the elevated regions of the Great Basin and Mojave Desert (the "high desert") becomes cool or even cold, although they may form at virtually any time of year. The air heats up due to adiabatic heating during its descent. While the air has already been dried by orographic lift before reaching the Great Basin as well as by subsidence from the upper atmosphere, the relative humidity of the air is further decreased as it descends from the high desert toward the coast, often falling below 10 percent.

Scan America has a link to live audio from the front lines of the fire fight in the San Fernando Valley. Much of the traffic is Verdugo dispatch and Los Angeles County Fire. Here's a direct link to the audio.

Here's the photo caption:

Vehicles burn early Monday morning, Oct. 13, 2008,  after intense Santa Ana winds  whipped up a 3,700-acre wildfire. (AP Photo/Mike Meadows)

Here's the latest from the Associated Press on the Marek Fire:

LOS ANGELES (AP) _ Two wildfires driven by strong Santa Ana winds threatened neighborhoods on the edges of the San Fernando Valley on Monday, killing one person, destroying several dozen mobile homes and forcing evacuations.

Firefighters were struggling with a 3,700-acre blaze in the Sylmar area in the valley's northeastern corner when a new blaze erupted at midmorning a few miles to the west in mountains above the Porter Ranch area and quickly grew to 500 acres.

"It is a blowtorch we can't get in front of," said Los Angeles County fire Inspector Frank Garrido.

Fire officials could not immediately estimate how many homes in Porter Ranch were in the fire's path. Flames burned furiously at midday just across a road from one development of luxury homes.

The fatality occurred at the so-called Marek Fire burning in the Sylmar area. where neighborhoods abut rugged canyonlands below the mountainous Angeles National forest. The victim was a man who appeared to be a transient living with a dog in a makeshift shelter, officials said.

An estimated 1,200 people were evacuated due to the Marek Fire, which was just 5 percent contained.

LOS ANGELES (AP) -- Firefighters backed by water-dumping helicopters and planes gained ground Sunday on a wildfire that destroyed two homes and forced the evacuation of about 1,200 people in a rugged area 20 miles north of downtown. The blaze charred up to 750 acres and also burned a garage, several sheds and three motor homes, said Los Angeles County Fire Department spokesman Ron Haralson. No one was seriously injured, but a firefighter and one resident reported minor breathing problems.

LOS ANGELES (AP) _ Firefighters backed by water-dumping helicopters and planes gained ground Sunday on a wildfire that destroyed two homes and forced the evacuation of about 1,200 people in a rugged area 20 miles north of downtown.
Los Angeles County Fire Department spokesman Ron Haralson said the blaze charred up to 750 acres and also burned a garage, several sheds and three motor homes.
No one was seriously injured. A firefighter and one resident reported minor breathing problems.
Haralson said firefighters are "getting a really good handle" on the blaze that started early. Sunday. But powerful Santa Ana winds are expected to arrive in the evening, and gusts could spread embers igniting brush, grass and chaparral in the area.
About 450 homes were evacuated early Sunday when the blaze moved southeast toward city limits, said U.S. Forest Service spokesman Stanton Florea.
"It burned right down to a couple of neighborhoods," Florea said.
The fire was burning south of the Wildlife Waystation, an animal sanctuary and rehabilitation facility set on 160 acres. The nonprofit agency houses more than 400 animals, including lions, bears and deer. Officials were loading up the animals in case the fire switched direction.
The cause of the fire is under investigation.

A fire aided by overnight winds broke out around 2 this morning in Little Tujunga Canyon and has already claimed 500 acres of brush and has forced the evacuation of about 1,200 nearby residents. Mandatory evacuations are currently in effect in Kagel Canyon, Lopez Canyon, and Little Tujunga Canyon. Residents of nearby Lakeview Terrace are on the ready, but are not required to evacuate as of yet.