Gainesville set a record Tuesday for the most rainfall ever reported locally in a 24-hour period, according to the National Weather Service in Peachtree City. A cooperative observer using a National Weather Service gauge at Lake Lanier recorded 6.6 inches falling between 8 a.m. Monday and 8 a.m. Tuesday, meteorologist Alex Gibbs said. The National Weather Service has been preserving data through the observer program since 1892.