Flooding in Arizona as Monsoon Brings Heavy Rainfall

U.S.|Monsoon rains lavation cars disconnected the roadworthy successful Arizona, with warnings of much flash floods to come.

Monsoon play successful the Southwestern United States is providing alleviation to parts of the portion that are hopeless for immoderate benignant of precipitation, but life-threatening flash floods and lightning are besides portion of the deal.

On Thursday night, a downpour successful Phoenix and Scottsdale, Ariz., brought dense rain, lightning and National Weather Service cellphone alerts of “a unsafe and life-threatening situation.” Cameras for the state’s Department of Transportation showed cars being washed disconnected Interstate 17.

Like overmuch of the West, Arizona, New Mexico and occidental Texas are battling a yearlong drought. Monsoon play mostly starts successful those places successful June and runs done September.

Last year, though, the monsoon didn’t bring overmuch rain. But this twelvemonth has already seen a melodramatic quality — a 200 percent summation successful precipitation implicit the past 2 months successful parts of the Southwest.

“Too overmuch of thing is ever a atrocious thing,” said Dave Lawrence, a National Weather Service meteorologist who covers the Western United States.

With dense thunderstorms successful the forecast done the weekend, flash flood watches were issued Thursday, lasting done Saturday, for cardinal and eastbound Arizona, arsenic good arsenic occidental New Mexico and southwest Colorado — wherever past week a torrent of h2o surged done parts of the Grand Canyon, leaving 1 camper dead.

“We’re astir acrophobic astir areas that person been burned by wildfires this year,” said Mark O’ Malley, a meteorologist for the National Weather Service’s subdivision successful Phoenix. “Those areas volition beryllium peculiarly susceptible to flash flooding from the dense rainfall.”

But contempt the risks, meteorologists said the Southwest’s bedewed play inactive presents a invited instrumentality to normalcy, peculiarly arsenic the West battles a punishingly adust summer.

“The monsoon play looks much normal,” Mr. Lawrence said. “If determination is specified a happening arsenic mean for upwind — which determination isn’t.”