Heavy rains set to continue in Ada, Owyhee counties

September 3, 2013 

— The National Weather Service logged .47 inches of rain in Tuesday morning’s downpour, most of that coming in just 30 minutes, meteorologist Tim Barker said.

The NWS issued a flash flood warning for the Boise area, concerned that the high rate of precipitation could drown the Foothills.

Barker said that didn’t happen.

“It seemed to weaken quite a bit as it went up over the Foothills,” he said. No problems with flooding were reported.

Six hundred twenty eight customers, including the Boise Towne Square mall, were left without power during the storm, but Idaho Power was able to get the electricity back on for everyone by Tuesday afternoon.

The flash flood warning was called off at 11:15 a.m., as the downpour was slowing to an intermittent drizzle.

But Barker warns that Idahoans have not seen the last of the rain. Another flash flood warning was sent out Tuesday afternoon, this time targeting southern Twin Falls and Southeast Owyhee County.

This time, flood predictions could come true. Barker said some spots are receiving rainfall at rates of up to an inch an hour. That can be dangerous as the downpour moves in steeper terrain, he said.

“If that was to fall onto any steeper terrain or any burn scars, that could cause a problem,” he said.

Back in Boise, storms are set to continue all week, but the heaviest rains will hit the Treasure Valley Wednesday night.

“It looks like another period of pretty intense activity [will be] Wednesday night into Thursday morning,” Barker said.

It’s too early to say if that storm will bring any flooding: Barker said he “wouldn’t be surprised,” but added that meteorologists will continue to monitor the advancing weather and issue any watches or warnings needed ahead of time.

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