On Tuesday at 7:45 p.m. EDT a flood advisory was released by the National Weather Service in effect until Wednesday at 1:45 a.m. EDT for Kent County. Your guide to weather alerts: advisories, watches, and warningsFlash flood warning: Take action! A flash flood warning is issued when a flash flood is either imminent or already occurring. Flood warning: Take action! Flood advisory: Be aware:A flood advisory is released when flooding is not expected to reach a severity level necessitating a warning.