On the afternoon of August 19, 1890, four tornadoes occurred in Pennsylvania. The focus of the summary looks at the two most impactful. An F3/borderline F4 tornado crossed through parts of Columbia and Luzerne County. 4 people were killed as it swept away several homes. As that tornado dissipated another tornado formed and plowed into Wilkes-Barre. 16 people were killed as this tornado damaged or destroyed over 400 buildings in the city.
On August 11, 1993, one of the most unique tornadoes in history would form in among the Utah mountains of the High Uintas Wilderness. The highest elevation significant tornado and the strongest in Utah history, this event pushed the limits of tornadoes in rugged terrain farther than any other.
On August 11, 1999, the most damaging tornado in Utah history carved a 4-mile long swath through the heart of Salt Lake City. Tragically 1 person was killed and over 80 people were injured. 300 buildings were damaged or destroyed.
On August 7, 2010, 11 tornadoes were reported by the SPC. This summary looks at the most violent, an EF-4 that affected parts of North Dakota and Minnesota. This photogenic tornado was captured on video as it leveled a farm in Wilkin County, MN.
It was a day that came to be known as “Black Friday”. On July 31, 1987, one of the most powerful tornadoes in Canadian history struck Edmonton, Alberta and parts of Strathcona County. It is the deadliest known tornado for Alberta and the second-deadliest for the country. This significant tornado was given a rating of F4 with maximum winds estimated at 260mph.
18 tornadoes ravaged Virginia on the Afternoon of August 6, 1993. This summary looks at the most violent tornado, an F4 that hit Petersburg. Old Towne Petersburg and a large shopping center in Colonial Heights were demolished. Three women were killed in the destruction of a Walmart. The tornado caused $47.5 million in damage, the costliest in Virginia history.
On July 21, 1987, an F4 tornado tracked 24 miles across the Teton Wilderness into Yellowstone National Park. Over 1,000,000 trees were knocked down as the tornado slashed its way across mountain tops up to 10,000 feet high, and through valleys. This is the highest altitude in the US that a violent tornado (F4/F5) has ever occurred.
On July 18, 2004, 8 tornadoes touched down in North Dakota. This summary looks at the strongest, an F4 that annihilated a farmstead near Marion. This tornado produced what is arguably among the most intense damage from any tornado in the 2000s.
A Funnel Feature by Guest Writer Matt Lee. He is the owner of the Innovative Construction and Building Materials blog. In this article, he outlines ways to fortify your roof to help withstand the hail and winds that accompany severe storms and tornadoes.