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‘Weather Whiplash’ Withers, then Drowns Areas Worldwide

/in , /by /Scientific Americanby Chelsea Harvey

The Dallas area is still reeling from record-breaking downpours that triggered flash floods across northeastern Texas last week. The event swamped houses, submerged vehicles and prompted hundreds of emergency rescues. At least one death has been reported so far.

The sheer volume of rain was stunning, with some locations receiving more than a foot. But the deluge was all the more surprising because Dallas has been choked by severe drought for months.

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Better Atmospheric River Forecasts Are Giving Emergency Planners More Time to Prepare for Flooding

/in , , /by /Scientific Americanby F. Martin Ralph

I was eating breakfast on a Monday morning at Sears Fine Food in downtown San Francisco, casually watching the local five-day weather forecast on a television screen behind the counter. A little symbol along the bottom showed a happy-looking sun for the rest of the day. Wednesday had a friendly-looking cloud and a few raindrops, and Thursday had a dark, threatening cloud with heavier drops.

I knew Thursday’s conditions would be much rougher than the symbol conveyed. I had been studying detailed satellite data and weather models, and they indicated that a major atmospheric river (AR) was likely to hit the city. The symbol was completely inadequate for communicating the threat of the approaching storm.

 

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Zapping Lead Pipes With Electricity Could Make Them Safer For Drinking Water

/in , /by /Scientific Americanby Angus Chen

The toxic effects of lead—developmental delays, organ damage, even death—are well-known. But millions of Americans still rely on lead pipes to deliver drinking water. In an attempt to make them safer, researchers at the University of California, Berkeley, are working on a new technology that uses electrical current to rapidly build a protective layer on the insides of the pipes. In early tests they reduced the amount of the toxic metal entering water, but other scientists are skeptical of the method’s potential as a long-term solution.

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Dismal Western Snowpack Is A Climate “Warning Sign”

/in , /by /Scientific Americanby Chelsea Harvey

It’s only May, and it’s already shaping up to be a stressful summer for many western states. Low mountain snowpack is a big part of the problem. Both the mighty Rio Grande and the Colorado River are experiencing low flow in places, prompting concerns about everything from water shortages to the plight of suffocating fish. U.S. officials have already launched rescue missions for an endangered minnow in New Mexico, where parts of the Rio Grande have already started to run dry—an unusual event so early in the season.

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