Search results
Results from the WOW.Com Content Network
A tornadic debris signature (TDS), often colloquially referred to as a debris ball, [1] is an area of high reflectivity on weather radar caused by debris lofting into the air, usually associated with a tornado. [1] [2] A TDS may also be indicated by dual-polarization radar products, designated as a polarimetric tornado debris signature (PTDS).
Strong mesocyclone on a thunderstorm near Tuscaloosa, Alabama, that was analyzed as fitting the characteristics of a TVS.It was associated with a tornado.. A tornadic vortex signature, abbreviated TVS, is a Pulse-Doppler radar weather radar detected rotation algorithm that indicates the likely presence of a strong mesocyclone that is in some stage of tornadogenesis. [1]
Dual-polarized WSR-88D radar image of the 2021 Naperville–Woodridge tornado, showing four products used to detect active tornadoes: high reflectivity returns in dBZ and low correlation coefficient returns, when paired with low differential reflectivity returns, indicate a tornado debris signature, and the strong opposing velocity values form ...
When the rain starts to fall, people immediately look to the weather radar to see how long it will last. But when severe weather strikes, meteorologists can use this technology to pinpoint the ...
At the same time, a tornado debris signature appeared on radar near Lawrence Township.. Police Chief Christopher Longo, of the Lawrence Township Police Department, shared footage of the ...
A hook echo is a pendant or hook-shaped weather radar signature as part of some supercell thunderstorms. It is found in the lower portions of a storm as air and precipitation flow into a mesocyclone, resulting in a curved feature of reflectivity. The echo is produced by rain, hail, or debris being wrapped around the supercell. [1]
A mobile home was also rolled in this area. At that time, violent rotation of radar paired with a debris signature prompted the issuance of a tornado emergency by the National Weather Service in Jackson, Mississippi at 8:04 pm CDT; the tornado would remain under this tag for most of its existence.
A study published in 2016 looked at how the MESO-SAILS radar scanning regime performed with respect to tornado debris signature (TDS) detection during the 2016 tornado season in the Iowa Region, compared to the distribution before its implementation. When tornado watches were active, MESO-SAILS was active 100% reflecting the National Weather ...