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UPDATE: 90 Vehicles Trapped As California Faces Rain, Snow, Mud

Mudslides

CHRISTOPHER WEBER   12/13/09 03:04 PM ET   AP

LOS ANGELES — Heavy rain tapered off, skies cleared and residents of the Los Angeles area foothills started returning home Sunday, a day after they fled because of fears that heavy rains would cause mudslides.

Public works and fire department officials drove through the wildfire-scarred neighborhoods early Sunday and determined that it was safe for the residents of the 44 evacuated homes in the La Crescenta, La Canada-Flintridge and Big Tujunga Canyon areas to return, said Los Angeles County Sheriff's Department Deputy Lillian Peck.

Fifteen patrol vehicles continued to make rounds in burn areas Sunday, scanning the hillsides for potential mudslides, said the Los Angeles Fire Department's Brian Humphrey.

"We've been planning for these winter storms since summer, since before the wildfires, coordinating with other agencies," said Humphrey. "We're confident that our preparedness really paid off. "

Foothill areas below the burned sections of the Angeles National Forest had been barricaded with sandbags and concrete barriers. Ground in recently burned areas has little ability to absorb rain, and the instant runoff during heavy rains can carry with it ash, mud, boulders and vegetation.

Mudslides and debris closed parts of a 12-mile stretch of the Angeles Crest Highway just north of Los Angeles, leaving 90 vehicles stranded for a time. No injuries were reported. The road remained closed Sunday.

Several small slides were reported on the highway between La Canada Flintridge and Mount Wilson.

Forecasters said some rain was lingering Sunday along the Central Coast but most of the state would see dry weather through midweek.

"We got a few good dumpings over the past few days," said Bonnie Bartling with the National Weather Service. "The system is on its way out, moving off to the east."

Rainfall totals in the wildfire burn areas were less than meteorologists had feared. Just under four inches fell above Arcadia in a 24 hour period ending Sunday and Mount Wilson got about 4.65 inches, according to unofficial NWS reports.

About 16,000 utility customers throughout Southern California were sporadically without electricity, mostly because of downed branches crashing onto power lines.

While problems in the lowlands eased, heavy snow in California's mountains made driving difficult. The California Department of Transportation was requiring chains for travel on all major highways over the Sierra.

Snows between 8 and 16 inches fell above 6,000 feet in the Southern California mountains. Winds blew at 25 to 35 mph.

The National Weather Service issued a winter storm watch through Sunday night for western Plumas County and the west slope of the Sierra Nevada in the north of the state and the mountains of Ventura and Los Angeles counties in the south.

The National Weather Service said another storm system will bring more heavy rain to Northern California late Tuesday and early Wednesday.

The new snow in the mountains is expected to give an early jump to building the snowpack, which is key to the region's water supply. But forecasters say the snow would also bring avalanche danger to the backcountry.

___

Associated Press Writer John S. Marshall in San Francisco contributed to this story.

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HUFFPOST SUPER USER
realpolitic
GOP is full of sound and fury, signifying nothing!
08:04 AM on 12/14/2009
These flash floods are growing more intense with climate change. One must also be careful of flooding after snow falls in the mountians with higher temperatures there.
12:55 PM on 12/14/2009
Actually the intensity of these floods have gone down over the last few decades. You should do some research before making a cheap political point.
HUFFPOST SUPER USER
realpolitic
GOP is full of sound and fury, signifying nothing!
01:27 PM on 12/14/2009
According to the Pacific Institute...

"California’s coastline, which includes more than 2,000 miles of open coast and enclosed bays, is vulnerable to a range of natural hazards, including storms, extreme high tides, and rising sea levels resulting from global climate change."

http://www.pacinst.org/reports/sea_level_rise/

In some places, like California, where rain and snowfall patterns are already unpredictable, there are elaborate systems of dams and reservoirs to keep a steady supply of water available — and to handle flood control. As snow and rain patterns shift even more, it becomes increasingly difficult to know when to keep the reservoirs full to maintain ecosystems, recreational areas, hydropower and water supply — and when to allow them to empty and make space for flood control.

"The problem is that you have a constant tension between flood control reserve and the desire to keep (the reservoirs) full," says Jeffrey Mount, a geologist who studies flooding at the University of California at Davis. "Climate change exacerbates that pressure."

http://www.npr.org/templates/story/story.php?storyId=18022014

I take it you only go by anecdotal evidence.
HUFFPOST SUPER USER
skyslimit
05:16 AM on 12/14/2009
nature always wins
photo
HUFFPOST SUPER USER
zombywulf
Pirate Captain Church of Saint Jerry
02:48 AM on 12/14/2009
And God said: thou shalt now build houses on steep hillsides or in flood plains, nor shall you let the weeds grow up past your roofline, or I will smite your Mc Mansion.
photo
SolarPowerGuy
Ph.D., Immunology; Solar power @ home; Green Party
02:40 AM on 12/14/2009
Rain in California! Mudslides, eh, whatever. We need the rain after three years of drought, and we're loving it!
02:15 PM on 12/13/2009
Geez I thought they all moved out of LA to come here to Las Vegas and commit crimes.
CA is more and more a state to shun!
Actually it will be CA, NV, AZ & FL are states to shun.
12:32 PM on 12/14/2009
Well, Coyote man, I am hoping that you do shun all the states you mention.
02:45 PM on 12/14/2009
Yes please stay away from my California. and take your Hummers with you.