Potomac Heritage National Scenic Trail

Severe weather is the primary concern for families visiting Potomac Heritage National Scenic Trail, with Montgomery County recording 17 thunderstorm wind events alongside 11 combined flood and flash flood incidents in recent years. The trail runs close to the Potomac River, meaning rising water can cut off sections with little warning, and downed trees from wind events can block routes or create hazards underfoot. Lightning strikes and two recorded tornadoes round out a weather profile that demands attention before and during your visit.

Before heading out, download a real-time weather radar app and set storm alerts for Montgomery County specifically — don't rely on a morning forecast alone. Pack a lightweight waterproof shelter or emergency bivy in case you need to wait out a sudden storm away from the river corridor, and identify high-ground exit points on your map before you start walking. If thunder is audible, move away from the riverbank immediately, as flood levels can rise faster than most hikers expect.