NOAA Study: Global Warming Slowing Storm Movements CDC: This Is Particularly Dangerous In Texas
Texans have suffered repeatedly from flooding when slow-moving storm systems from the Gulf stalled instead of passing through rapidly. That happened in Tropical Storm Allison in 2001, Hurricane Harvey in 2017 and an unnamed tropical disturbance last month.
More such inundations appear to lie ahead as global warming progresses, according to a new study published in the journal Nature. The author, a federal scientist, calculated that as heat-trapping pollution warmed the planet by about 0.5 degree C, tropical cyclones slowed down worldwide by an average 10 percent from 1949-2016.
Scientists already have been warning that a warming climate is causing tropical cyclones (weather systems called disturbances, storms or hurricanes, depending on their strength) to carry more water vapor – and therefore pose greater flooding risks. The study author, James P. Kossin of the National Oceanic and Atmospheric Administration, concluded that the slowdown in tropical cyclones he discovered had “very likely” boosted rainfall totals increased by higher temperatures.
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On June 19, while that weather system was lingering in place, the U.S. Centers for Disease Control and Prevention marked the start of the 2018 hurricane season with a webinar briefing for journalists on the public-health hazards of tropical weather systems. “Slow-moving or stalled tropical storms or other large rain events” generally pose greater risks in Texas than other hurricane features, said Bill Rich, emergency medicine specialist at the CDC’s National Center for Environmental Health. “The rain is more dangerous, in my opinion, than the hurricane wave and wind impacts you see on TV.”
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http://texasclimatenews.org/?p=15156