Mount Washington is the tallest peak in the Northeast. The mountain is famous for attracting extreme weather, with winds that exceed the force of a hurricane more than 100 days per year.
The mountain is home to “the world’s worst weather” for three main reasons. Firstly, at 6,288 feet (1,917 meters) tall, it is the highest mountain in New England. Winds pick up speed when they can blow unobstructed, and the mountain is directly exposed to winds from the west that travel for hundreds of miles without obstruction. The closest mountains of a similar height to Mount Washington along this westerly windpath are the Black Hills of South Dakota about 1,600 miles (2,500 kilometers) away, according to the Mount Washington Observatory.
Not only do these winds hit Mount Washington at full speed but they are also siphoned toward the peak by the surrounding landscape. The mountains to the west of Mount Washington form a 75-mile-wide (120 km) funnel that channels westerly winds toward the mountain, accelerating already-fast winds until they reach breakneck speeds, according to the observatory.
Finally, Mount Washington sits on the confluence of three major storm tracks. Storms hit the summit every three days on average in the winter, bringing high winds and huge amounts of precipitation, according to the observatory. Record levels of precipitation for Mount Washington were measured in 1969, when 4.1 feet (1.3 m) of snow fell within 24 hours.
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As a result of its unique position, Mount Washington is a contender for the world’s fastest recorded wind speed. On “calm” summer days, instruments on Mount Washington’s summit record wind speeds of 40 mph (65 km/h). But when storms roll in, these winds can whip up gusts exceeding 100 mph (160 km/h).
In the midst of making sure instruments were working well, the summit crew took some time to show us (safely) what 100mph winds looked like… and had some fun doing it. Tune in tonight at 5pm for the weekend’s Higher Summits Forecast on Facebook Live. pic.twitter.com/6TSShijLgkMarch 7, 2025
On April 12, 1934, instruments at the summit measured a record wind speed of 231 mph (372 km/h), which is equivalent to wind speeds inside a level-5 tornado on the Enhanced Fujita Scale. Such winds have the power to level well-constructed buildings, blow away structures with weak foundations and throw cars over large distances. The record still stands today as the second-fastest natural wind gust ever recorded, with the fastest occurring on Barrow Island in Australia on April 10, 1996 and reaching speeds of 253 mph (407 km/h).
Even wind speeds of 100 mph can rip huge chunks of ice off the mountain and the Mount Washington Observatory building at the summit, which poses a severe risk for hikers and climbers in the winter. The observatory has bulletproof windows to mitigate the risk of one of these chunks smashing into the building, according to its website.
As well as flying ice, people climbing Mount Washington in the winter are faced with the risk of avalanches, hypothermia and frostbite. Temperatures on the mountain average 27.1 degrees Fahrenheit (minus 2.7 degrees Celsius), which can create extreme wind chill conditions, according to New Hampshire State Parks.
Several rescue teams monitor Mount Washington, and volunteers regularly save the lives of hikers who get lost or caught out by changing weather conditions.
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