Saturated slopes worry California cities
LOS ANGELES — Saturated mountainsides loomed over foothill communities Saturday as a storm centered off California rotated bands of rain into a state that sorely needs the moisture but not at such dangerously high rates.
Evacuation orders remained in effect for hundreds of homes in Los Angeles County foothill communities where fires burned away vegetation that holds soil in place, and bursts of rain caused the mountains to belch occasional debris flows.
The storm marked a sharp departure from many months of drought that grew to crisis proportions for the state’s vast farming industry. However, such storms would have to become common to make serious inroads against the drought, weather forecasters said.
Officials warned despite lengthy lulls, more heavy downpours are expected, and they urged residents who left their homes as much as three days earlier to be patient.
“These mountains are now saturated and soaked. We know where the mud’s gonna go, we just don’t how much and what the intensity is going to be,” Assistant Chief Steve Martin of the Los Angeles County Fire Department told a webcast news conference.
The National Weather Service said the storm is forecast to move east over the Rockies and into the Plains and Mississippi Valley through today, bringing a hodgepodge of precipitation.
Colorado’s ski resorts could see up to six inches of fresh snow. A mixture of sleet and snow in Kansas, Missouri and Illinois will eventually change to all snow — with up to eight inches forecast for the Kansas City and St. Louis areas — while northern Arkansas will see freezing rain.
The system also has its sights set on the Appalachians and the East Coast into Monday.
The storm’s eastward move Saturday finally broke a 70-day streak without precipitation in the Phoenix area. An 85-day spell of no measurable rainfall in Las Vegas ended Friday. Rain and snow also finally came to drought-stricken New Mexico.
In California, about 1,200 houses in the adjacent cities of Azusa and Glendora as well as nearby Monrovia were under evacuation orders because of the possibility of destructive flows from the San Gabriel Mountains, a rugged range largely covered by the Angeles National Forest. A dozen homes in Azusa were in particular danger.
Glendora City Manager Chris Jeffers said experts planned to study the condition of slopes where rain fell at the rate of 1.3 inches an hour at times.
“Our hope is to get up closer to some of the hills for our engineers to see how the saturation may look, if there’s any signs of stress on the hillsides, on any of the properties,” he said.
Forecasters said the upper-level low at the storm’s center would come ashore and move east through the day, dragging rain with it but leaving only showers in California today — a lucky break for the evening’s Oscar red carpet festivities in Hollywood.
The storm was the much more powerful second act of two systems that hit California during the week.
Downtown San Francisco received 7.92 inches of rain by Saturday morning, bringing the city to 44 percent of its normal rainfall but avoiding its driest-ever “rain year” record by just half an inch, NWS meteorologist Matt Mehle said. The driest year was in 1851, with just 7.42 inches. The rain year begins July 1.
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