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A tornado with no obvious funnel from the upper clouds, although the rotating dust cloud indicates strong winds at the surface. A tornado operates as a rotating, funnel-shaped cloud that extends downward from a thunderstorm, to the ground, with swirling winds which have reached 300 miles per hour (480 km/h). [2]
There are several different styles of storm cellars. There are the generic underground storm/tornado cellar, also called storm or tornado shelters, as well as the new above-ground safe rooms. A "cellar" is an underground unit, but for the sake of the specified use of a "storm cellar" to protect one from high-wind storms, it seems relevant to ...
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AP Still reeling from the EF5 tornado that struck Moore, Okla., on May 20, the residents of Oklahoma City awoke today to survey the damage from a second round of violent storms that left five ...
The tornado weakened further and crossed I-59, moving through unpopulated rural areas southeast of Poplarville, causing EF0 to EF1 tree and outbuilding damage. The tornado then struck a house at EF1 strength near the Stone County line, causing heavy roof damage. Eight people were injured in Pearl River County, 22 houses were destroyed or ...
Wind on the roof surfaces can cause negative pressures that create a lifting force sufficient to lift the roof off the building. Once this occurs, the building is weakened considerably, and the rest will likely fail as well. To minimize this vulnerability, the upper structure ought to be anchored through the walls to the foundation.
On May 27, 1997, a large and slow-moving F5 tornado caused catastrophic damage across portions of the Jarrell, Texas area. The tornado killed 27 residents of the town, mainly in a single subdivision, and inflicted approximately $40 million (1997 USD) in damages in its 13-minute, 5.1 miles (8.2 km) track.
This was the first large-scale tornado chasing activity sponsored by an institution. It culminated in a brilliant success in 1973 with the Union City, Oklahoma tornado providing a foundation for tornado and supercell morphology that proved the efficacy of storm chasing field research. [18]