As #ClimateChange makes extremes more extreme, rainfall is no different
"A federally commissioned report finds the government's calculations for maximum potential rainfall are no longer valid thanks to the more intense rainfall driven by climate change.
The estimates are used to reduce the risk of catastrophic flooding and build structures that can withstand #ExtremeRainfall."
"High-hazard structures in the U.S., including dams and nuclear power plants, have been engineered to withstand floods resulting from the most unlikely but possible precipitation, termed Probable Maximum Precipitation (PMP)."
The report covers better methods of determining PMP, and being prepared for black swan events. "The new definition targets precipitation depths with an extremely low exceedance probability instead of assuming rainfall is bounded."