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The rear flank downdraft (RFD) is a region of dry air wrapping around the back of a mesocyclone in a supercell thunderstorm. [1] These areas of descending air are thought to be essential in the production of many supercellular tornadoes. Large hail within the rear flank downdraft often shows up brightly as a hook on weather radar images ...
This tornado was accompanied by an intense rear-flank downdraft surge, with the total damage path width being recorded at 2.7 mi (4.3 km). A Ka-POL radar from Texas Tech University had been recording the tornado throughout its life cycle, and recorded a wind gust of 87.9 m/s (197 mph; 316 km/h) near the surface, while confirming the tornado's ...
Classical tornadoes are supercellular tornadoes, which have a recognizable pattern of formation. [5] The cycle begins when a strong thunderstorm develops a rotating mesocyclone a few miles up in the atmosphere. As rainfall in the storm increases, it drags with it an area of quickly descending air known as the rear flank downdraft (RFD). This ...
For a tornado to form in this manner, a rear-flank downdraft enters the center of the mesocyclone from the back. Cold air, being denser than warm air, is able to penetrate the updraft. The combination of the updraft and downdraft completes the development of a tornado. Tornadoes that form in this method are often violent and can last over an ...
Most tornadoes from supercells follow a recognizable life cycle which begins when increasing rainfall drags with it an area of quickly descending air known as the rear flank downdraft (RFD). This downdraft accelerates as it approaches the ground, and drags the supercell's rotating mesocyclone towards the ground with it.
The tornado weakened to EF1 strength and shrunk in size as it crossed E1300 Road, snapping and uprooting trees and ripping a roof off an outbuilding. Homes sustained minor roof damage. Despite being far from the tornado, a single-wide manufactured home along E1295 Road sustained severe damage, likely caused by rear flank downdraft winds. [6]
The rear-flank downdraft of the storm quickly obscured the tornado from view; however, it was later determined the tornado was on the ground for 1.5 mi (2.4 km), uprooting small trees and snapping limbs of larger ones. [22]
A pivot irrigation system was flipped over and some trees were downed. Rear flank downdraft winds from the tornado inflicted moderate damage to a softball field facility, while also destroying a shed, several signs and scoreboards, and the fencing around the field. [60] EF0 SSW of Wagener to W of Perry: Aiken: SC