Hawaiian Island of Kauai Just Smashed the 40-Year Standing National 24-Hour Rainfall Record The torrential rain that devastated parts of Kauai earlier this month couldย soon break the record for the most rainfall in American history, the National Weather Service said on Wednesday.ย The NWS says preliminary data indicates the Hawaiian island of Kauai broke a national 24-hour rainfall record during recent flash flooding. The agency’s Honolulu office said Wednesday a rain gauge in Waipa […] Weather WeatherBrains | April 26, 2018 1 Comment