Residents and visitors in Kauai should prepare for potential localized heavy rainfall, particularly in windward areas. The chance of rain is significant, with a 70% likelihood of showers tonight in some areas, which could lead to brief downpours. While the risk of flash flooding is expected to decrease overnight, some areas may still experience localized heavy rain. Those in low-lying or flood-prone areas should remain vigilant. Breezy conditions with gusty winds are also expected, which may impact outdoor activities.