The heavy rainfall and potential thunderstorms are expected to create hazardous conditions, especially in urban areas and regions with poor drainage. The Berkshires and Worcester Hills are at the highest risk, with rainfall totals reaching up to 7 inches. Flash flooding could disrupt transportation, damage property, and pose a threat to life. Residents in flood-prone areas should remain vigilant and prepare for possible evacuations. The combination of heavy rain and thunderstorms may also lead to localized power outages and hazardous travel conditions.