UPDATE: Exposed Propane Tanks Likely Cause of House Fire

Update 10 a.m. Saturday

A Friday afternoon house fire was caused by propane tanks that exploded in the back yard of a home, sending debris and fence parts at least 50 feet, according to a press release issued by the Livermore-Pleasanton Fire Department. (See attached PDF).

The blaze also damaged the exterior of a neighboring home, firefighters said. At one point a liquid stream of flames flowed down the street in the gutter, prompting one fire official to quickly move his parked vehicle out of the way.

Update 2:30 p.m. Friday

Propane cylinders that exploded after being left outside and exposed to the sun likely caused a Friday afternoon house fire, officials said.

Firefighters at 12:41 p.m. were sent to the 2400 block of Normandy Circle, off Concannon Boulevard, for a report of a structure fire.

Livermore-Pleasanton Fire Department's Truck 96 was the first to respond to the blaze and saw a large fire to the exterior of a home and heard multiple explosions, Deputy Chief Joe Rodondi said.

The fire appeared to have started along a fenceline before engulfing the garage area. The blaze also extended to the home's rooftop and attic.

"From then it just became a stubborn fire," Rodondi said.

The blaze was contained just before 2 p.m.

Rodondi said no one was home during the incident and that a firefighter suffered a minor injury while battling the blaze.

Authorities encourage residents to place propane tanks in shaded areas and away from sunlight.

Update 1:30 p.m.

Firefighters have contained the blaze in the garage, but continue to fight the fire in the attic.

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Original Post

The Livermore-Pleasanton Fire Department are battling a large house fire on the 2400 block of Normandy Circle, off Concannon Boulevard Friday afternoon.

Firefighters can be seen on the roof trying to fight the fire and the blaze has engulfed a vehicle in the driveway.

Smoke from the blaze can be seen throughout much of the city.

Livermore Patch is at the scene and will update this post as more information is made available.

Patch editor Kari Hulac helped report this story.