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Flash flood warning in effect

Recent burn areas most affected

Posted: July 14, 2008 5:49 p.m.
Updated: September 14, 2008 5:04 a.m.
 
The National Weather Service has issued a flash flood watch for portions of the eastern Santa Clarita Valley, including Acton and portions of Canyon Country. The flash flood warning went into effect at noon and will continue until 10 p.m.

"What the watch means is that conditions are conducive for thunderstorms and flooding," said Jayme Laber, a hydrologist with the National Weather Service in Ventura. "It just means that these areas are ripe for thunderstorms and flash flooding."

Due to "copious amounts of moisture" throughout southwestern California this morning, Laber added the combination of heavy rainfall throughout the day in the regional mountains and the lack of brush in burn areas in the Santa Clarita Valley will create conditions ripe for flash flooding.

"Any thunderstorm that develops this afternoon and evening will be capable of producing intense rainfall," the weather service said in a forecast report. "In addition, upper level winds will be very weak, so thunderstorms will be slow moving. The combination of slow moving thunderstorms with heavy downpours will greatly increase the potential of flash flooding."

Forecasters advised residents in flood-prone areas of Acton and Canyon Country to clear debris, place sandbags in key locations and move vehicles off the roads that may serve as channels for runoff.

According to forecasters, several locations in local mountains and deserts may expect rainfall of one to two inches per hour later in the day.

Today's rain results from an influx of warm, moist air from the Gulf Coast, reportedly replacing the departed high-pressure system that prompted last week's heat wave throughout Southern California.

Despite the flash flood watch, the weather service was predicting mostly sunny conditions for most of the Santa Clarita Valley, with a high near 91 degrees and mild winds. Temperatures are forecast to drop to 66 degrees overnight.

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