Two trillion gallons of water trigger historic flooding in Hawaiʻi

More than 2 trillion gallons of water—enough to fill 3 million Olympic-sized swimming pools—inundated Hawaiʻi in March. The accumulated rainfall over 14 days reached as high as 3,000% of normal historical levels for this time of year, culminating in a destructive "rain bomb" over Oʻahu. Through the University of Hawaiʻi's Hawaiʻi Mesonet and the Hawaiʻi Climate Data Portal, researchers captured the scale of these back-to-back Kona low systems, mapping localized threats and providing crucial data on the state's severe flooding.