Mathematical Modeling of Structure and Dynamics of Concentrated Tornado-like Vortices: A Review

AY Varaksin, SV Ryzhkov - Mathematics, 2023 - mdpi.com
Mathematical modeling is the most important tool for constructing the theory of concentrated
tornado-like vortices. A review and analysis of computational and theoretical works devoted …

Assessing the comparative effects of storm-relative helicity components within right-moving supercell environments

NA Goldacker, MD Parker - Journal of the Atmospheric …, 2023 - journals.ametsoc.org
Supercell thunderstorms develop low-level rotation via tilting of environmental horizontal
vorticity (ω h) by the updraft. This rotation induces dynamic lifting that can stretch near …

Disentangling the influences of storm-relative flow and horizontal streamwise vorticity on low-level mesocyclones in supercells

JM Peters, BE Coffer, MD Parker… - Journal of the …, 2023 - journals.ametsoc.org
Sufficient low-level storm-relative flow is a necessary ingredient for sustained supercell
thunderstorms and is connected to supercell updraft width. Assuming a supercell exists, the …

Supercell low-level mesocyclones: Origins of inflow and vorticity

BE Coffer, MD Parker, JM Peters… - Monthly Weather …, 2023 - journals.ametsoc.org
The development and intensification of low-level mesocyclones in supercell thunderstorms
have often been attributed, at least in part, to augmented streamwise vorticity generated …

[HTML][HTML] Transition of near-ground vorticity dynamics during tornadogenesis

J Fischer, JML Dahl - Journal of the Atmospheric Sciences, 2022 - journals.ametsoc.org
Although much is known about the environmental conditions necessary for supercell
tornadogenesis, the near-ground vorticity dynamics during the tornadogenesis process itself …

[HTML][HTML] Tornado formation and intensity prediction using polarimetric radar estimates of updraft area

MM French, DM Kingfield - Weather and Forecasting, 2021 - journals.ametsoc.org
A sample of 198 supercells are investigated to determine if a radar proxy for the area of the
storm midlevel updraft may be a skillful predictor of imminent tornado formation and/or peak …

Supercell-external storms and boundaries acting as catalysts for tornadogenesis

J Fischer, JML Dahl - Monthly Weather Review, 2023 - journals.ametsoc.org
It has long been observed that interactions of a supercell with other storms or storm-scale
boundaries sometimes seem to directly instigate tornadogenesis. First, the authors explore …

Integrated damage, visual, remote sensing, and environmental analysis of a strong tornado in southern Brazil

MI Oliveira, FS Puhales, EL Nascimento, V Anabor - Atmospheric Research, 2022 - Elsevier
On 20 April 2015 a strong tornado struck the city of Xanxerê located in western Santa
Catarina (SC) state, in southern Brazil. The tornado destroyed several buildings, causing …

How well must surface vorticity be organized for tornadogenesis?

MD Parker - Journal of the Atmospheric Sciences, 2023 - journals.ametsoc.org
This study investigates whether quasi-random surface vertical vorticity is sufficient for
tornadogenesis when combined with an updraft typical of tornadic supercells. The viability of …

Low-level updraft intensification in response to environmental wind profiles

NA Goldacker, MD Parker - Journal of the Atmospheric …, 2021 - journals.ametsoc.org
Supercell storms can develop a “dynamical response” whereby upward accelerations in the
lower troposphere amplify as a result of rotationally induced pressure falls aloft. These …