The Washington Monument is the tallest structure in DC, rising 555 feet above the National Mall. In thunderstorms, height matters.
Lightning tends to strike the tallest object in an area because tall structures enhance the electric field between the cloud and the ground. When a thunderstorm builds overhead, negative charge typically accumulates near the base of the cloud. The ground below responds with a buildup of positive charge, especially on elevated objects.
The Monument, standing alone and sharply pointed, becomes an efficient pathway for electrical discharge.
That makes it a natural lightning rod.
In fact, it is equipped with lightning protection. Metal rods and grounding systems are built into the structure to safely carry electrical current into the earth. A lightning strike may look explosive in a photograph, but the Monument is designed to handle it.
How often does it get hit?
In an average year the DC region experiences about 25 to 35 thunderstorm days. During active summer patterns, especially when slow-moving storms roll across the area, lightning frequently occurs near or directly over the Mall.
Given its height and location, the Monument is struck multiple times in many years.
An analysis published by Vaisala, a Finland-based company that operates the National Lightning Detection Network in the contiguous United States, concluded the monument is struck “twice per year on the high end and once every five years on the low end.”
Some strikes are visible and dramatic, branching bolts captured by photographers positioned across the Potomac or atop nearby rooftops. Others occur within heavy rain cores and go largely unnoticed except by lightning detection networks.
During particularly active storm periods, such as squall lines or severe thunderstorm outbreaks, it may be struck more than once in a single evening. There is a record of one thunderstorm that struck the Monument six times.
Memorable lightning moments
Over the years, local photographers, including CapitalWeather.com's Kevin Ambrose, have captured stunning images of lightning hitting the Monument during summer thunderstorms.
Strikes were photographed during active convective stretches in recent summers, and dramatic images circulated widely during severe storm outbreaks in 2005 and in 2021.
These images often go viral because the Monument provides scale and symbolism.
